diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..173454b
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,9 @@
+# Created by .ignore support plugin (hsz.mobi)
+### Example user template template
+### Example user template
+
+# IntelliJ project files
+.idea
+*.iml
+out
+gen
diff --git "a/.idea/Java\351\253\230\347\272\247\345\267\245\347\250\213\345\270\210.iml" "b/.idea/Java\351\253\230\347\272\247\345\267\245\347\250\213\345\270\210.iml"
deleted file mode 100644
index d6ebd48..0000000
--- "a/.idea/Java\351\253\230\347\272\247\345\267\245\347\250\213\345\270\210.iml"
+++ /dev/null
@@ -1,9 +0,0 @@
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\ No newline at end of file
diff --git a/.idea/misc.xml b/.idea/misc.xml
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+++ /dev/null
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diff --git a/.idea/modules.xml b/.idea/modules.xml
deleted file mode 100644
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+++ /dev/null
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\ No newline at end of file
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
deleted file mode 100644
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--- a/.idea/vcs.xml
+++ /dev/null
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\ No newline at end of file
diff --git a/.idea/workspace.xml b/.idea/workspace.xml
deleted file mode 100644
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+++ /dev/null
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diff --git a/MybatisLearning/http_test/.idea/workspace.xml b/MybatisLearning/http_test/.idea/workspace.xml
new file mode 100644
index 0000000..be15435
--- /dev/null
+++ b/MybatisLearning/http_test/.idea/workspace.xml
@@ -0,0 +1,503 @@
+
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+ 1615448075795
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+
+
+ No facets are configured
+
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+
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+
+
+ 1.8
+
+
+
+
+
+
+
+ http_test
+
+
+
+
+
+
+
+ 1.8
+
+
+
+
+
+
+
+ Maven: com.squareup.okhttp3:okhttp:3.6.0
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/MybatisLearning/http_test/http_test.iml b/MybatisLearning/http_test/http_test.iml
new file mode 100644
index 0000000..78b2cc5
--- /dev/null
+++ b/MybatisLearning/http_test/http_test.iml
@@ -0,0 +1,2 @@
+
+
\ No newline at end of file
diff --git a/MybatisLearning/http_test/pom.xml b/MybatisLearning/http_test/pom.xml
new file mode 100644
index 0000000..a5b74bb
--- /dev/null
+++ b/MybatisLearning/http_test/pom.xml
@@ -0,0 +1,70 @@
+
+
+ 4.0.0
+
+ com.cdmone
+ http_test
+ 1.0-SNAPSHOT
+
+
+
+
+ com.squareup.okhttp3
+ okhttp
+ 3.6.0
+
+
+ joda-time
+ joda-time
+ 2.9.9
+
+
+ junit
+ junit
+ 4.12
+ test
+
+
+
+ org.springframework.boot
+ spring-boot-starter
+
+
+ org.slf4j
+ slf4j-log4j12
+
+
+ log4j
+ log4j
+
+
+
+
+ com.google.code.gson
+ gson
+ 2.6.2
+
+
+
+
+
+
+
+ org.apache.maven.plugins
+ maven-compiler-plugin
+ 2.3.2
+
+ 1.8
+ 1.8
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/MybatisLearning/http_test/src/main/java/AlertInfo.java b/MybatisLearning/http_test/src/main/java/AlertInfo.java
new file mode 100644
index 0000000..69c50da
--- /dev/null
+++ b/MybatisLearning/http_test/src/main/java/AlertInfo.java
@@ -0,0 +1,145 @@
+import java.io.Serializable;
+
+public class AlertInfo implements Serializable {
+ private String manufacturerServerId;
+ private String alertId;
+ private String alertLevel;
+ private String dataCenterName;
+ private String networkZone;
+ private String internetProtocol;
+ private String alertSource;
+ private String alertType;
+ private String alertObject;
+ private String alertContent;
+ private String alertTime;
+ private String alertCatalog;
+
+ @Override
+ public String toString() {
+ return "AlertInfo{" +
+ "manufacturerServerId='" + manufacturerServerId + '\'' +
+ ", alertId='" + alertId + '\'' +
+ ", alertLevel='" + alertLevel + '\'' +
+ ", dataCenterName='" + dataCenterName + '\'' +
+ ", networkZone='" + networkZone + '\'' +
+ ", internetProtocol='" + internetProtocol + '\'' +
+ ", alertSource='" + alertSource + '\'' +
+ ", alertType='" + alertType + '\'' +
+ ", alertObject='" + alertObject + '\'' +
+ ", alertContent='" + alertContent + '\'' +
+ ", alertTime='" + alertTime + '\'' +
+ ", alertCatalog='" + alertCatalog + '\'' +
+ '}';
+ }
+
+ public AlertInfo(String manufacturerServerId, String alertId, String alertLevel, String dataCenterName, String networkZone, String internetProtocol, String alertSource, String alertType, String alertObject, String alertContent, String alertTime, String alertCatalog) {
+ this.manufacturerServerId = manufacturerServerId;
+ this.alertId = alertId;
+ this.alertLevel = alertLevel;
+ this.dataCenterName = dataCenterName;
+ this.networkZone = networkZone;
+ this.internetProtocol = internetProtocol;
+ this.alertSource = alertSource;
+ this.alertType = alertType;
+ this.alertObject = alertObject;
+ this.alertContent = alertContent;
+ this.alertTime = alertTime;
+ this.alertCatalog = alertCatalog;
+ }
+
+ public String getManufacturerServerId() {
+ return manufacturerServerId;
+ }
+
+ public void setManufacturerServerId(String manufacturerServerId) {
+ this.manufacturerServerId = manufacturerServerId;
+ }
+
+ public String getAlertId() {
+ return alertId;
+ }
+
+ public void setAlertId(String alertId) {
+ this.alertId = alertId;
+ }
+
+ public String getAlertLevel() {
+ return alertLevel;
+ }
+
+ public void setAlertLevel(String alertLevel) {
+ this.alertLevel = alertLevel;
+ }
+
+ public String getDataCenterName() {
+ return dataCenterName;
+ }
+
+ public void setDataCenterName(String dataCenterName) {
+ this.dataCenterName = dataCenterName;
+ }
+
+ public String getNetworkZone() {
+ return networkZone;
+ }
+
+ public void setNetworkZone(String networkZone) {
+ this.networkZone = networkZone;
+ }
+
+ public String getInternetProtocol() {
+ return internetProtocol;
+ }
+
+ public void setInternetProtocol(String internetProtocol) {
+ this.internetProtocol = internetProtocol;
+ }
+
+ public String getAlertSource() {
+ return alertSource;
+ }
+
+ public void setAlertSource(String alertSource) {
+ this.alertSource = alertSource;
+ }
+
+ public String getAlertType() {
+ return alertType;
+ }
+
+ public void setAlertType(String alertType) {
+ this.alertType = alertType;
+ }
+
+ public String getAlertObject() {
+ return alertObject;
+ }
+
+ public void setAlertObject(String alertObject) {
+ this.alertObject = alertObject;
+ }
+
+ public String getAlertContent() {
+ return alertContent;
+ }
+
+ public void setAlertContent(String alertContent) {
+ this.alertContent = alertContent;
+ }
+
+ public String getAlertTime() {
+ return alertTime;
+ }
+
+ public void setAlertTime(String alertTime) {
+ this.alertTime = alertTime;
+ }
+
+ public String getAlertCatalog() {
+ return alertCatalog;
+ }
+
+ public void setAlertCatalog(String alertCatalog) {
+ this.alertCatalog = alertCatalog;
+ }
+}
diff --git a/MybatisLearning/http_test/src/main/java/DateUtils.java b/MybatisLearning/http_test/src/main/java/DateUtils.java
new file mode 100644
index 0000000..54b8580
--- /dev/null
+++ b/MybatisLearning/http_test/src/main/java/DateUtils.java
@@ -0,0 +1,12 @@
+
+import org.joda.time.DateTime;
+import org.joda.time.format.DateTimeFormat;
+import org.joda.time.format.DateTimeFormatter;
+
+public class DateUtils {
+ public static String format(String patten){
+ DateTimeFormatter fmt = DateTimeFormat.forPattern(patten);
+ String dateStr = fmt.print(DateTime.now().getMillis());
+ return dateStr;
+ }
+}
diff --git a/MybatisLearning/http_test/src/main/java/HttpUtils.java b/MybatisLearning/http_test/src/main/java/HttpUtils.java
new file mode 100644
index 0000000..c491921
--- /dev/null
+++ b/MybatisLearning/http_test/src/main/java/HttpUtils.java
@@ -0,0 +1,116 @@
+
+import okhttp3.*;
+import sun.net.www.http.HttpClient;
+
+import java.io.IOException;
+import java.util.concurrent.TimeUnit;
+
+public class HttpUtils {
+
+ private static final String MEDIA_TYPE_JSON = "application/json;charset=utf-8";
+
+ private static String COMPANY_PREFIX = "ECLOUDTECHCOMCN";
+
+
+
+ //MEDIA_TYPE_TEXT post请求不是application/x-www-form-urlencoded的，
+ // 全部直接返回，不作处理，即不会解析表单数据来放到request parameter map中。
+ // 所以通过request.getParameter(name)是获取不到的。只能使用最原始的方式，读取输入流来获取。
+ private static final MediaType MEDIA_TYPE_TEXT = MediaType.parse("application/x-www-form-urlencoded; charset=utf-8");
+
+
+
+ /**
+ * @param url , json
+ * @return java.lang.String
+ * @descprition
+ * @version 1.0 post+json方式,token只有在校验用户token换取组户名时必填，其他场景不需要填写
+ */
+ public static String sendByPostJson(String url, String json,String token) {
+ String result;
+ if("".equals(token) || null == token){
+ token = COMPANY_PREFIX+ DateUtils.format("yyyyMMddHHmmssSSS");
+ }else {
+ token = "Bearer "+token;
+ }
+ System.out.println("send post request,url->"+url+" params->"+json+" token->"+token);
+ //log.info("send post request,url->{},params->{},token->{}",url,json,token);
+ //RequestBody body = RequestBody.create(null, new byte[]{});
+ RequestBody body = RequestBody.create(MediaType.parse(MEDIA_TYPE_JSON),json);
+ Request request = new Request.Builder()
+ .addHeader("Authorization",token)
+ .addHeader("Content-Type",MEDIA_TYPE_JSON)
+ .url(url)
+ .post(body)
+ .build();
+ Response response ;
+ try {
+
+ /**
+ * 忽略https证书的OkHttpClient
+ * 新建一个OkHttpClient的单例模式
+ */
+ response = new OkHttpClient().newBuilder()
+ .connectTimeout(10, TimeUnit.SECONDS)
+ .readTimeout(10, TimeUnit.SECONDS)
+ .writeTimeout(10, TimeUnit.SECONDS)
+ //.sslSocketFactory(SSLSocketClient.getSSLSocketFactory())
+ .hostnameVerifier(SSLSocketClient.getHostnameVerifier())
+ .build().newCall(request).execute();
+ //response = client.newCall(request).execute();
+ result = response.body().string();
+ System.out.println("send post request,receive data->"+result);
+ response.close();
+ //log.info("send post request,receive data->{}",result);
+ return result;
+ } catch (IOException e) {
+ //log.error("sendByPostJson error",e);
+ System.out.println("sendByPostJson error"+e);
+ return "kong";
+ }
+ }
+
+
+// public static String sendByPostTest(String url, String json,String token) {
+// String result;
+// //OkHttpClient client = new OkHttpClient();
+//
+// if("".equals(token) || null == token){
+// token = COMPANY_PREFIX+ DateUtils.format("yyyyMMddHHmmssSSS");
+// }else {
+// token = "Bearer "+token;
+// }
+// System.out.println("send post request,url->"+url+" params->"+json+" token->"+token);
+// //log.info("send post request,url->{},params->{},token->{}",url,json,token);
+// RequestBody body = RequestBody.create(MediaType.parse(MEDIA_TYPE_JSON), json);
+// Request request = new Request.Builder()
+// .addHeader("Authorization",token)
+// .addHeader("Content-Type",MEDIA_TYPE_JSON)
+// .addHeader("User-Agent","Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:0.9.4)")
+// .addHeader("Accept-Language","zh-CN,zh;q=0.9")
+// .url(url)
+// .post(body)
+// .build();
+// OkHttpClient.Builder builder = new OkHttpClient.Builder();
+// builder.connectTimeout(30, TimeUnit.SECONDS);
+// builder.readTimeout(30, TimeUnit.SECONDS);
+// builder.writeTimeout(30, TimeUnit.SECONDS);
+// OkHttpClient client = builder.build();
+// Response response ;
+// try {
+// //response = OKHttpClientBuilder.buildOKHttpClient().connectTimeout(20, TimeUnit.SECONDS).readTimeout(20, TimeUnit.SECONDS).build().newCall(request).execute();
+// response = client.newCall(request).execute();
+// result = response.body().string();
+// System.out.println("send post request,receive data->{}"+result);
+// response.close();
+// //log.info("send post request,receive data->{}",result);
+// return result;
+// } catch (IOException e) {
+// //log.error("sendByPostJson error",e);
+// System.out.println("sendByPostJson error"+e);
+// return "kong";
+// }
+// }
+
+
+}
diff --git a/MybatisLearning/http_test/src/main/java/OKHttpClientBuilder.java b/MybatisLearning/http_test/src/main/java/OKHttpClientBuilder.java
new file mode 100644
index 0000000..09f9680
--- /dev/null
+++ b/MybatisLearning/http_test/src/main/java/OKHttpClientBuilder.java
@@ -0,0 +1,60 @@
+import okhttp3.OkHttpClient;
+
+import javax.net.ssl.*;
+import java.security.KeyManagementException;
+import java.security.NoSuchAlgorithmException;
+
+/**
+ * Author: areful
+ * Date: 2019/2/15
+ */
+public class OKHttpClientBuilder {
+
+ // 编码格式。发送编码格式统一用UTF-8
+ private static final String ENCODING = "UTF-8";
+
+ // 设置连接超时时间，单位毫秒。
+ private static final int CONNECT_TIMEOUT = 6000;
+
+ // 请求获取数据的超时时间(即响应时间)，单位毫秒。
+ private static final int SOCKET_TIMEOUT = 10000;
+ public static OkHttpClient getUnsafeOkHttpClient() {
+
+ try {
+ final TrustManager[] trustAllCerts = new TrustManager[]{
+ new X509TrustManager() {
+ @Override
+ public void checkClientTrusted(java.security.cert.X509Certificate[] chain, String authType) {
+ }
+
+ @Override
+ public void checkServerTrusted(java.security.cert.X509Certificate[] chain, String authType) {
+ }
+
+ @Override
+ public java.security.cert.X509Certificate[] getAcceptedIssuers() {
+ return new java.security.cert.X509Certificate[]{};
+ }
+ }
+ };
+
+ final SSLContext sslContext = SSLContext.getInstance("SSL");
+ sslContext.init(null, trustAllCerts, new java.security.SecureRandom());
+ final javax.net.ssl.SSLSocketFactory sslSocketFactory = sslContext.getSocketFactory();
+ OkHttpClient.Builder builder = new OkHttpClient.Builder();
+ builder.sslSocketFactory(sslSocketFactory);
+
+ builder.hostnameVerifier(new HostnameVerifier() {
+ @Override
+ public boolean verify(String hostname, SSLSession session) {
+ return true;
+ }
+ });
+
+ return builder.build();
+ } catch (Exception e) {
+ throw new RuntimeException(e);
+ }
+
+ }
+}
diff --git a/MybatisLearning/http_test/src/main/java/SSLSocketClient.java b/MybatisLearning/http_test/src/main/java/SSLSocketClient.java
new file mode 100644
index 0000000..e210b43
--- /dev/null
+++ b/MybatisLearning/http_test/src/main/java/SSLSocketClient.java
@@ -0,0 +1,58 @@
+import javax.net.ssl.*;
+import java.security.SecureRandom;
+import java.security.cert.X509Certificate;
+
+public class SSLSocketClient {
+ /**
+ * 管理证书和信任证书的
+ * @return
+ */
+ //获取这个SSLSocketFactory
+ public static SSLSocketFactory getSSLSocketFactory() {
+ try {
+ SSLContext sslContext = SSLContext.getInstance("SSL");
+ sslContext.init(null, getTrustManager(), new SecureRandom());
+ return sslContext.getSocketFactory();
+ } catch (Exception e) {
+ throw new RuntimeException(e);
+ }
+ }
+
+ //获取TrustManager
+ private static TrustManager[] getTrustManager() {
+ TrustManager[] trustAllCerts = new TrustManager[]{
+ new X509TrustManager() {
+ @Override
+ public void checkClientTrusted(X509Certificate[] chain, String authType) {
+ }
+
+ @Override
+ public void checkServerTrusted(X509Certificate[] chain, String authType) {
+ }
+
+ @Override
+ public X509Certificate[] getAcceptedIssuers() {
+ return new X509Certificate[]{};
+ }
+ }
+ };
+ return trustAllCerts;
+ }
+
+
+ /**
+ * 配置一个HostnameVerifier来忽略host验证
+ * @return
+ */
+ public static HostnameVerifier getHostnameVerifier() {
+ HostnameVerifier hostnameVerifier = new HostnameVerifier() {
+ @Override
+ public boolean verify(String s, SSLSession sslSession) {
+ return true;//信任所有证书
+ }
+ };
+ return hostnameVerifier;
+
+ }
+
+}
diff --git a/MybatisLearning/http_test/src/main/java/StorageInfo.java b/MybatisLearning/http_test/src/main/java/StorageInfo.java
new file mode 100644
index 0000000..cf96956
--- /dev/null
+++ b/MybatisLearning/http_test/src/main/java/StorageInfo.java
@@ -0,0 +1,85 @@
+public class StorageInfo {
+ private String manufacturerServerId;
+ private String tenantId;
+ private String tenantName;
+ private String dataCenterName;
+ private String networkZone;
+ private String protectionLevel;
+ private String securityType;
+ private Integer storageCapacity;
+
+
+ public StorageInfo(String manufacturerServerId, String tenantId, String tenantName, String dataCenterName, String networkZone, String protectionLevel, String securityType, Integer storageCapacity) {
+ this.manufacturerServerId = manufacturerServerId;
+ this.tenantId = tenantId;
+ this.tenantName = tenantName;
+ this.dataCenterName = dataCenterName;
+ this.networkZone = networkZone;
+ this.protectionLevel = protectionLevel;
+ this.securityType = securityType;
+ this.storageCapacity = storageCapacity;
+ }
+
+ @Override
+ public String toString() {
+ return "StorageInfo{" +
+ "manufacturerServerId='" + manufacturerServerId + '\'' +
+ ", tenantId='" + tenantId + '\'' +
+ ", tenantName='" + tenantName + '\'' +
+ ", dataCenterName='" + dataCenterName + '\'' +
+ ", protectionLevel='" + protectionLevel + '\'' +
+ ", securityType='" + securityType + '\'' +
+ ", storageCapacity='" + storageCapacity + '\'' +
+ '}';
+ }
+
+ public String getManufacturerServerId() {
+ return manufacturerServerId;
+ }
+
+ public void setManufacturerServerId(String manufacturerServerId) {
+ this.manufacturerServerId = manufacturerServerId;
+ }
+
+ public String getTenantId() {
+ return tenantId;
+ }
+
+ public void setTenantId(String tenantId) {
+ this.tenantId = tenantId;
+ }
+
+ public String getTenantName() {
+ return tenantName;
+ }
+
+ public void setTenantName(String tenantName) {
+ this.tenantName = tenantName;
+ }
+
+ public String getDataCenterName() {
+ return dataCenterName;
+ }
+
+ public void setDataCenterName(String dataCenterName) {
+ this.dataCenterName = dataCenterName;
+ }
+
+ public String getProtectionLevel() {
+ return protectionLevel;
+ }
+
+ public void setProtectionLevel(String protectionLevel) {
+ this.protectionLevel = protectionLevel;
+ }
+
+ public String getSecurityType() {
+ return securityType;
+ }
+
+ public void setSecurityType(String securityType) {
+ this.securityType = securityType;
+ }
+
+
+}
diff --git a/MybatisLearning/http_test/src/main/java/Test.java b/MybatisLearning/http_test/src/main/java/Test.java
new file mode 100644
index 0000000..1632229
--- /dev/null
+++ b/MybatisLearning/http_test/src/main/java/Test.java
@@ -0,0 +1,37 @@
+import com.google.gson.Gson;
+
+public class Test {
+
+ public static void main(String[] are){
+ String url = "https://yxdint.tongdao.tech:21443/backup/uaa/current";
+ String json = "";
+ String alertUrl = "https://yxdint.tongdao.tech:21443/backup/logic/driving/v1/tenant/storage/consumption/info";
+ String token = "";
+ StorageInfo storageInfo = new StorageInfo("792167268883628035","1234","zaibei","DONG_CHONG","GOVERNMENT_EXTRANET","LOCAL","PLAIN",1234567);
+ HttpUtils.sendByPostJson(alertUrl,new Gson().toJson(storageInfo),token);
+ }
+
+
+ public void test2(){
+ String url = "https://yxdint.tongdao.tech:21443/backup/uaa/current";
+ String json = "";
+ String alertUrl = "https://yxdint.tongdao.tech:21443/backup/logic/driving/v1/alert/info";
+ String token = "";
+ AlertInfo alertInfo = new AlertInfo("792167268883628035","123","SERIOUS",
+ "DONG_CHONG","GOVERNMENT_EXTRANET","123.123.123.123","zaibei2"
+ ,"备份","备份主机","备份作业10.24.68.02_D执行失败","20201231160800123","EVENT");
+ String result = HttpUtils.sendByPostJson(alertUrl,json,token);
+ System.out.println(result);
+ }
+
+ public void test3(){//{"message":"成功","status":0,"content":{"id":"1615580712136"}}
+ String url = "https://yxdint.tongdao.tech:21443/backup/uaa/current";
+ String json = "";
+ String alertUrl = "https://yxdint.tongdao.tech:21443/backup/logic/driving/v1/tenant/storage/consumption/info";
+ String token = "";
+ StorageInfo storageInfo = new StorageInfo("792167268883628035","1234","zaibei","DONG_CHONG","GOVERNMENT_EXTRANET","LOCAL","PLAIN",1234567);
+ HttpUtils.sendByPostJson(alertUrl,new Gson().toJson(storageInfo),token);
+ }
+
+
+}
diff --git "a/JavaSE/JavaSE(\344\270\211).md" b/MybatisLearning/http_test/src/main/resources/application.properties
similarity index 100%
rename from "JavaSE/JavaSE(\344\270\211).md"
rename to MybatisLearning/http_test/src/main/resources/application.properties
diff --git a/MybatisLearning/http_test/target/classes/AlertInfo.class b/MybatisLearning/http_test/target/classes/AlertInfo.class
new file mode 100644
index 0000000..b1e3c9e
Binary files /dev/null and b/MybatisLearning/http_test/target/classes/AlertInfo.class differ
diff --git a/MybatisLearning/http_test/target/classes/DateUtils.class b/MybatisLearning/http_test/target/classes/DateUtils.class
new file mode 100644
index 0000000..776f77f
Binary files /dev/null and b/MybatisLearning/http_test/target/classes/DateUtils.class differ
diff --git a/MybatisLearning/http_test/target/classes/HttpUtils.class b/MybatisLearning/http_test/target/classes/HttpUtils.class
new file mode 100644
index 0000000..a4b0990
Binary files /dev/null and b/MybatisLearning/http_test/target/classes/HttpUtils.class differ
diff --git a/MybatisLearning/http_test/target/classes/OKHttpClientBuilder$1.class b/MybatisLearning/http_test/target/classes/OKHttpClientBuilder$1.class
new file mode 100644
index 0000000..d26e00c
Binary files /dev/null and b/MybatisLearning/http_test/target/classes/OKHttpClientBuilder$1.class differ
diff --git a/MybatisLearning/http_test/target/classes/OKHttpClientBuilder$2.class b/MybatisLearning/http_test/target/classes/OKHttpClientBuilder$2.class
new file mode 100644
index 0000000..7fdea40
Binary files /dev/null and b/MybatisLearning/http_test/target/classes/OKHttpClientBuilder$2.class differ
diff --git a/MybatisLearning/http_test/target/classes/OKHttpClientBuilder.class b/MybatisLearning/http_test/target/classes/OKHttpClientBuilder.class
new file mode 100644
index 0000000..fe34d3a
Binary files /dev/null and b/MybatisLearning/http_test/target/classes/OKHttpClientBuilder.class differ
diff --git a/MybatisLearning/http_test/target/classes/SSLSocketClient$1.class b/MybatisLearning/http_test/target/classes/SSLSocketClient$1.class
new file mode 100644
index 0000000..9801622
Binary files /dev/null and b/MybatisLearning/http_test/target/classes/SSLSocketClient$1.class differ
diff --git a/MybatisLearning/http_test/target/classes/SSLSocketClient$2.class b/MybatisLearning/http_test/target/classes/SSLSocketClient$2.class
new file mode 100644
index 0000000..54a5ed5
Binary files /dev/null and b/MybatisLearning/http_test/target/classes/SSLSocketClient$2.class differ
diff --git a/MybatisLearning/http_test/target/classes/SSLSocketClient.class b/MybatisLearning/http_test/target/classes/SSLSocketClient.class
new file mode 100644
index 0000000..98250c9
Binary files /dev/null and b/MybatisLearning/http_test/target/classes/SSLSocketClient.class differ
diff --git a/MybatisLearning/http_test/target/classes/StorageInfo.class b/MybatisLearning/http_test/target/classes/StorageInfo.class
new file mode 100644
index 0000000..c139b15
Binary files /dev/null and b/MybatisLearning/http_test/target/classes/StorageInfo.class differ
diff --git a/MybatisLearning/http_test/target/classes/Test.class b/MybatisLearning/http_test/target/classes/Test.class
new file mode 100644
index 0000000..4ef452d
Binary files /dev/null and b/MybatisLearning/http_test/target/classes/Test.class differ
diff --git "a/JavaSE/JavaSE(\344\272\224).md" b/MybatisLearning/http_test/target/classes/application.properties
similarity index 100%
rename from "JavaSE/JavaSE(\344\272\224).md"
rename to MybatisLearning/http_test/target/classes/application.properties
diff --git a/MybatisLearning/mybatis_multitable/.idea/compiler.xml b/MybatisLearning/mybatis_multitable/.idea/compiler.xml
new file mode 100644
index 0000000..5445593
--- /dev/null
+++ b/MybatisLearning/mybatis_multitable/.idea/compiler.xml
@@ -0,0 +1,13 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/MybatisLearning/mybatis_multitable/.idea/encodings.xml b/MybatisLearning/mybatis_multitable/.idea/encodings.xml
new file mode 100644
index 0000000..15a15b2
--- /dev/null
+++ b/MybatisLearning/mybatis_multitable/.idea/encodings.xml
@@ -0,0 +1,4 @@
+
+
+
+
\ No newline at end of file
diff --git a/MybatisLearning/mybatis_multitable/.idea/inspectionProfiles/Project_Default.xml b/MybatisLearning/mybatis_multitable/.idea/inspectionProfiles/Project_Default.xml
new file mode 100644
index 0000000..6560a98
--- /dev/null
+++ b/MybatisLearning/mybatis_multitable/.idea/inspectionProfiles/Project_Default.xml
@@ -0,0 +1,36 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/MybatisLearning/mybatis_multitable/.idea/misc.xml b/MybatisLearning/mybatis_multitable/.idea/misc.xml
new file mode 100644
index 0000000..4b661a5
--- /dev/null
+++ b/MybatisLearning/mybatis_multitable/.idea/misc.xml
@@ -0,0 +1,14 @@
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/MybatisLearning/mybatis_multitable/.idea/uiDesigner.xml b/MybatisLearning/mybatis_multitable/.idea/uiDesigner.xml
new file mode 100644
index 0000000..e96534f
--- /dev/null
+++ b/MybatisLearning/mybatis_multitable/.idea/uiDesigner.xml
@@ -0,0 +1,124 @@
+
+
+
+
+ -
+
+
+ -
+
+
+ -
+
+
+ -
+
+
+ -
+
+
+
+
+
+ -
+
+
+
+
+
+ -
+
+
+
+
+
+ -
+
+
+
+
+
+ -
+
+
+
+
+ -
+
+
+
+
+ -
+
+
+
+
+ -
+
+
+
+
+ -
+
+
+
+
+ -
+
+
+
+
+ -
+
+
+ -
+
+
+
+
+ -
+
+
+
+
+ -
+
+
+
+
+ -
+
+
+
+
+ -
+
+
+
+
+ -
+
+
+ -
+
+
+ -
+
+
+ -
+
+
+ -
+
+
+
+
+ -
+
+
+ -
+
+
+
+
+
\ No newline at end of file
diff --git a/MybatisLearning/mybatis_multitable/.idea/workspace.xml b/MybatisLearning/mybatis_multitable/.idea/workspace.xml
new file mode 100644
index 0000000..d97bf70
--- /dev/null
+++ b/MybatisLearning/mybatis_multitable/.idea/workspace.xml
@@ -0,0 +1,773 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+ 1615613121639
+
+
+ 1615613121639
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
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+
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+
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+
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+
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+
+
+
+
+
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+
+
+
+
+
+
+
+
+
+
+
+
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+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+ No facets are configured
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+ 1.8
+
+
+
+
+
+
+
+ mybatis_multitable
+
+
+
+
+
+
+
+ 1.8
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/MybatisLearning/mybatis_multitable/mybatis_multitable.iml b/MybatisLearning/mybatis_multitable/mybatis_multitable.iml
new file mode 100644
index 0000000..78b2cc5
--- /dev/null
+++ b/MybatisLearning/mybatis_multitable/mybatis_multitable.iml
@@ -0,0 +1,2 @@
+
+
\ No newline at end of file
diff --git a/MybatisLearning/mybatis_multitable/pom.xml b/MybatisLearning/mybatis_multitable/pom.xml
new file mode 100644
index 0000000..24a36c5
--- /dev/null
+++ b/MybatisLearning/mybatis_multitable/pom.xml
@@ -0,0 +1,77 @@
+
+
+ 4.0.0
+
+ com.lagou
+ mybatis_multitable
+ 1.0-SNAPSHOT
+
+
+
+
+ org.mybatis
+ mybatis
+ 3.4.5
+
+
+
+ mysql
+ mysql-connector-java
+ 5.1.6
+ runtime
+
+
+
+ junit
+ junit
+ 4.9
+
+
+
+ log4j
+ log4j
+ 1.2.12
+
+
+ org.mybatis.caches
+ mybatis-redis
+ 1.0.0-beta2
+
+
+
+
+ com.github.pagehelper
+ pagehelper
+ 3.7.5
+
+
+ com.github.jsqlparser
+ jsqlparser
+ 0.9.1
+
+
+
+ tk.mybatis
+ mapper
+ 3.1.2
+
+
+
+
+
+
+
+
+ src/main/java
+
+ **/*.properties
+ **/*.xml
+
+ false
+
+
+
+
+
\ No newline at end of file
diff --git a/MybatisLearning/mybatis_multitable/src/main/java/com/lagou/IOrderMapper.xml b/MybatisLearning/mybatis_multitable/src/main/java/com/lagou/IOrderMapper.xml
new file mode 100644
index 0000000..4becb8a
--- /dev/null
+++ b/MybatisLearning/mybatis_multitable/src/main/java/com/lagou/IOrderMapper.xml
@@ -0,0 +1,23 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/MybatisLearning/mybatis_multitable/src/main/java/com/lagou/IUserMapper.xml b/MybatisLearning/mybatis_multitable/src/main/java/com/lagou/IUserMapper.xml
new file mode 100644
index 0000000..187ca96
--- /dev/null
+++ b/MybatisLearning/mybatis_multitable/src/main/java/com/lagou/IUserMapper.xml
@@ -0,0 +1,40 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/MybatisLearning/mybatis_multitable/src/main/java/com/lagou/mapper/IOrderMapper.java b/MybatisLearning/mybatis_multitable/src/main/java/com/lagou/mapper/IOrderMapper.java
new file mode 100644
index 0000000..5732cfb
--- /dev/null
+++ b/MybatisLearning/mybatis_multitable/src/main/java/com/lagou/mapper/IOrderMapper.java
@@ -0,0 +1,28 @@
+package com.lagou.mapper;
+
+import com.lagou.pojo.Order;
+import com.lagou.pojo.User;
+import org.apache.ibatis.annotations.*;
+
+import java.util.List;
+
+@CacheNamespace//开启二级缓存
+public interface IOrderMapper {
+
+
+ /**
+ * 使用注解开发
+ * @Results注解对应于 xml文件中的resultMap，每个实体如果是一对一关系，使用@One注解
+ * 如果是一对多的关系（即集合），则是使用@many
+ * @return
+ */
+ @Results({
+ @Result(property = "id",column = "id"),
+ @Result(property = "orderTime",column = "order_time"),
+ @Result(property = "total",column = "total"),
+ @Result(property = "user",column = "uid",javaType = User.class,
+ one = @One(select = "com.lagou.mapper.IUserMapper.findUserById"))
+ })
+ @Select("select * from orders")
+ List findAllOrderAndUser();
+}
diff --git a/MybatisLearning/mybatis_multitable/src/main/java/com/lagou/mapper/IUserMapper.java b/MybatisLearning/mybatis_multitable/src/main/java/com/lagou/mapper/IUserMapper.java
new file mode 100644
index 0000000..d626e03
--- /dev/null
+++ b/MybatisLearning/mybatis_multitable/src/main/java/com/lagou/mapper/IUserMapper.java
@@ -0,0 +1,49 @@
+package com.lagou.mapper;
+
+import com.lagou.pojo.Order;
+import com.lagou.pojo.User;
+import org.apache.ibatis.annotations.*;
+import org.apache.ibatis.cache.impl.PerpetualCache;
+import org.mybatis.caches.redis.RedisCache;
+
+import java.util.List;
+
+/**
+ * 使用mybatis-redis作为二级缓存，这样可以实现分布式缓存（多台服务器同时请求）
+ * mybatis不能实现分布式缓存，其次底层是hashmap
+ */
+@CacheNamespace(implementation = RedisCache.class)
+public interface IUserMapper {
+ //查询订单的同时还查询订单所属的用户
+ List findOrderAndUser();
+
+
+ //查询用户信息，同时查询每个用户关联订单信息
+ List findAll();
+
+ /**
+ * 使用注解开发
+ */
+ //添加用户
+ @Insert("insert into user values(#{id},#{userName})")
+ public void addUser(User user);
+ @Update("update user set username = #{userName} where id = #{id}")
+ public void updateUser(User user);
+
+ @Select("select * from user")
+ public List selectAllUser();
+
+ @Delete("delete from user where id = #{id}")
+ public int delectUser(User user);
+
+
+ /**
+ * 禁用二级缓存，每次都从数据库中取
+ * @param id
+ * @return
+ */
+ @Options(useCache = false)
+ @Select("select * from user where id = #{id}")
+ public User findUserById(Integer id);
+
+}
diff --git a/MybatisLearning/mybatis_multitable/src/main/java/com/lagou/mapper/UserMapper.java b/MybatisLearning/mybatis_multitable/src/main/java/com/lagou/mapper/UserMapper.java
new file mode 100644
index 0000000..e0e8d23
--- /dev/null
+++ b/MybatisLearning/mybatis_multitable/src/main/java/com/lagou/mapper/UserMapper.java
@@ -0,0 +1,10 @@
+package com.lagou.mapper;
+
+import com.lagou.pojo.User;
+import tk.mybatis.mapper.common.Mapper;
+
+/**
+ * 通用mapper接口,继承mapper则可以增删改查
+ */
+public interface UserMapper extends Mapper {
+}
diff --git a/MybatisLearning/mybatis_multitable/src/main/java/com/lagou/plugin/MyPlugin.java b/MybatisLearning/mybatis_multitable/src/main/java/com/lagou/plugin/MyPlugin.java
new file mode 100644
index 0000000..064310e
--- /dev/null
+++ b/MybatisLearning/mybatis_multitable/src/main/java/com/lagou/plugin/MyPlugin.java
@@ -0,0 +1,45 @@
+package com.lagou.plugin;
+
+import org.apache.ibatis.executor.statement.StatementHandler;
+import org.apache.ibatis.plugin.*;
+
+import java.sql.Connection;
+import java.util.Properties;
+
+/**
+ * 自定义插件：实现拦截器方法
+ */
+@Intercepts({
+ @Signature(type = StatementHandler.class,method = "prepare",
+ args = {Connection.class,Integer.class})
+})
+public class MyPlugin implements Interceptor {
+ /**
+ * 拦截方法：只要被拦截的目标对象的目标方法被执行时，每次都会执行intercept方法
+ * @param invocation
+ * @return
+ * @throws Throwable
+ */
+ public Object intercept(Invocation invocation) throws Throwable {
+ System.out.println("对方法进行了增强。。。实现了分页 分表");
+ return invocation.proceed();//原方法执行
+ }
+
+ /**
+ * 主要为了把当前拦截器生成代理存到拦截链中
+ * @param
+ * @return
+ */
+ public Object plugin(Object target) {
+ Object o = Plugin.wrap(target,this);
+ return o;
+ }
+
+ /**
+ * 获取配置文件参数
+ * @param properties
+ */
+ public void setProperties(Properties properties) {
+ System.out.println("获取到的配置文件的参数:"+properties);
+ }
+}
diff --git a/MybatisLearning/mybatis_multitable/src/main/java/com/lagou/pojo/Order.java b/MybatisLearning/mybatis_multitable/src/main/java/com/lagou/pojo/Order.java
new file mode 100644
index 0000000..869d872
--- /dev/null
+++ b/MybatisLearning/mybatis_multitable/src/main/java/com/lagou/pojo/Order.java
@@ -0,0 +1,61 @@
+package com.lagou.pojo;
+
+public class Order {
+ private Integer id;
+ private String orderTime;
+ private Double total;
+ private Integer uid;
+
+ private User user;
+
+ @Override
+ public String toString() {
+ return "Order{" +
+ "id=" + id +
+ ", orderTime='" + orderTime + '\'' +
+ ", total=" + total +
+ ", uid=" + uid +
+ ", user=" + user +
+ '}';
+ }
+
+ public User getUser() {
+ return user;
+ }
+
+ public void setUser(User user) {
+ this.user = user;
+ }
+
+ public Integer getId() {
+ return id;
+ }
+
+ public void setId(Integer id) {
+ this.id = id;
+ }
+
+ public String getOrderTime() {
+ return orderTime;
+ }
+
+ public void setOrderTime(String orderTime) {
+ this.orderTime = orderTime;
+ }
+
+ public Double getTotal() {
+ return total;
+ }
+
+ public void setTotal(Double total) {
+ this.total = total;
+ }
+
+ public Integer getUid() {
+ return uid;
+ }
+
+ public void setUid(Integer uid) {
+ this.uid = uid;
+ }
+}
diff --git a/MybatisLearning/mybatis_multitable/src/main/java/com/lagou/pojo/User.java b/MybatisLearning/mybatis_multitable/src/main/java/com/lagou/pojo/User.java
new file mode 100644
index 0000000..7b587db
--- /dev/null
+++ b/MybatisLearning/mybatis_multitable/src/main/java/com/lagou/pojo/User.java
@@ -0,0 +1,52 @@
+package com.lagou.pojo;
+
+import javax.persistence.*;
+import java.io.Serializable;
+import java.util.List;
+
+/**
+ * 开启二级缓存后，缓存的pojo需要实现反序列化，因为数据存储不一定在内存中，可能还在硬盘中，所以取数据的话就需要反序列化了
+ * mybatis中的pojo都需要实现反序列化接口
+ */
+@Table(name = "user")
+public class User implements Serializable {
+ @Id
+ @GeneratedValue(strategy = GenerationType.IDENTITY)//主键自增
+ private Integer id;
+ @Column(name = "username")
+ private String userName;
+
+ private List orderList;
+
+ public List getOrderList() {
+ return orderList;
+ }
+
+ public void setOrderList(List orderList) {
+ this.orderList = orderList;
+ }
+
+ public Integer getId() {
+ return id;
+ }
+
+ public void setId(Integer id) {
+ this.id = id;
+ }
+
+ public String getUserName() {
+ return userName;
+ }
+
+ public void setUserName(String userName) {
+ this.userName = userName;
+ }
+
+ @Override
+ public String toString() {
+ return "User{" +
+ "id=" + id +
+ ", userName='" + userName + '\'' +
+ '}';
+ }
+}
diff --git a/MybatisLearning/mybatis_multitable/src/main/java/com/lagou/test/CacheTest.java b/MybatisLearning/mybatis_multitable/src/main/java/com/lagou/test/CacheTest.java
new file mode 100644
index 0000000..1aa84ff
--- /dev/null
+++ b/MybatisLearning/mybatis_multitable/src/main/java/com/lagou/test/CacheTest.java
@@ -0,0 +1,81 @@
+package com.lagou.test;
+
+import com.lagou.mapper.IOrderMapper;
+import com.lagou.mapper.IUserMapper;
+import com.lagou.pojo.User;
+import org.apache.ibatis.io.Resources;
+import org.apache.ibatis.session.SqlSession;
+import org.apache.ibatis.session.SqlSessionFactory;
+import org.apache.ibatis.session.SqlSessionFactoryBuilder;
+import org.junit.Before;
+import org.junit.Test;
+
+import java.io.IOException;
+import java.io.InputStream;
+
+public class CacheTest {
+
+ private IUserMapper userMapper;
+ private SqlSession sqlSession;
+ private SqlSessionFactory sqlSessionFactory;
+
+ @Before
+ public void beforePro() throws IOException {
+ InputStream inputStream = Resources.getResourceAsStream("sqlMapConfig.xml");
+ sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
+ sqlSession = sqlSessionFactory.openSession(true);
+ userMapper = sqlSession.getMapper(IUserMapper.class);
+ }
+
+ /**
+ * mybatis默认开启一级缓存，底层结构为hashmap。key为statementId+params+boundSql
+ * 如果做增删改操作，并进行事务的提交，就会刷新一级缓存
+ */
+ @Test
+ public void test(){
+ User user = userMapper.findUserById(2);
+ User user1 = new User();
+ user1.setId(11);
+ user1.setUserName("asad");
+ userMapper.addUser(user1);//中间修改会刷新缓存
+ //sqlSession.clearCache();//手动清除缓存
+
+ User user2 = userMapper.findUserById(2);
+
+ System.out.println(user == user2);//开启了一级缓存，其实就是同一个对象
+ }
+
+
+ /**
+ * 二级缓存test
+ * 二级缓存是基于namespace，就是同时操作usermapper下的不同的sql，且二级缓存是对同namespace下是共享的
+ * 测试方法：根据不同的sqlsession来测试
+ * 配置参数：@CacheNamespace 或者xml方式：
+ * Cache Hit Ratio:0.5,请求两次，命中一次，即0.5
+ *
+ * Cause: redis.clients.jedis.exceptions.JedisConnectionException: Could not get a resource from the pool
+ */
+ @Test
+ public void test2(){
+ SqlSession sqlSession1 = sqlSessionFactory.openSession();
+ SqlSession sqlSession2 = sqlSessionFactory.openSession();
+ SqlSession sqlSession3 = sqlSessionFactory.openSession();
+ IUserMapper userMapper1 = sqlSession1.getMapper(IUserMapper.class);
+ IUserMapper userMapper2 = sqlSession2.getMapper(IUserMapper.class);
+ IUserMapper userMapper3 = sqlSession3.getMapper(IUserMapper.class);
+
+ User user1 = userMapper1.findUserById(2);
+ sqlSession1.close();//清空一级缓存
+
+ User user = new User();
+ user.setId(2);
+ user.setUserName("jjdjdj");
+ userMapper2.updateUser(user);//对sqlsession2做了增删改查操作，那么二级缓存会清空刷新
+ sqlSession2.commit();//需要提交事物
+
+ User user3 = userMapper3.findUserById(2);
+ System.out.println(user1 == user3);//fasle 原因是二级缓存不是缓存的对象，是保存数据，然后封装的对象，所以地址不一样
+ sqlSession3.close();
+ }
+
+}
diff --git a/MybatisLearning/mybatis_multitable/src/main/java/com/lagou/test/Testss.java b/MybatisLearning/mybatis_multitable/src/main/java/com/lagou/test/Testss.java
new file mode 100644
index 0000000..6580f68
--- /dev/null
+++ b/MybatisLearning/mybatis_multitable/src/main/java/com/lagou/test/Testss.java
@@ -0,0 +1,117 @@
+package com.lagou.test;
+
+import com.github.pagehelper.PageHelper;
+import com.github.pagehelper.PageInfo;
+import com.lagou.mapper.IOrderMapper;
+import com.lagou.mapper.IUserMapper;
+import com.lagou.mapper.UserMapper;
+import com.lagou.pojo.Order;
+import com.lagou.pojo.User;
+import org.apache.ibatis.io.Resources;
+import org.apache.ibatis.session.SqlSession;
+import org.apache.ibatis.session.SqlSessionFactory;
+import org.apache.ibatis.session.SqlSessionFactoryBuilder;
+import org.junit.Before;
+import org.junit.Test;
+import tk.mybatis.mapper.entity.Example;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.List;
+
+public class Testss {
+
+ @Test
+ public void test1() throws IOException {
+ InputStream inputStream = Resources.getResourceAsStream("sqlMapConfig.xml");
+ SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
+ SqlSession sqlSession = sqlSessionFactory.openSession();
+ IUserMapper userMapper = sqlSession.getMapper(IUserMapper.class);
+ List orders = userMapper.findOrderAndUser();
+ for (Order order : orders) {
+ System.out.println(order);
+ }
+ }
+
+
+ @Test
+ public void test2() throws IOException {
+ InputStream inputStream = Resources.getResourceAsStream("sqlMapConfig.xml");
+ SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
+ SqlSession sqlSession = sqlSessionFactory.openSession();
+ IOrderMapper orderMapper = sqlSession.getMapper(IOrderMapper.class);
+ List orders = orderMapper.findAllOrderAndUser();
+ System.out.println("查询订单！");
+ for (Order order : orders) {
+ System.out.println(order);
+ }
+ IUserMapper userMapper = sqlSession.getMapper(IUserMapper.class);
+ List users = userMapper.findAll();
+ System.out.println("查询用户！");
+ for (User user : users) {
+ System.out.println(user);
+ }
+ }
+
+ private IUserMapper userMapper;
+ private IOrderMapper orderMapper;
+
+ @Before
+ public void beforePro() throws IOException {
+ InputStream inputStream = Resources.getResourceAsStream("sqlMapConfig.xml");
+ SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
+ SqlSession sqlSession = sqlSessionFactory.openSession(true);
+ userMapper = sqlSession.getMapper(IUserMapper.class);
+ orderMapper = sqlSession.getMapper(IOrderMapper.class);
+ }
+
+
+ @Test
+ public void test3(){
+ User user = new User();
+ user.setId(10);
+ user.setUserName("mmm");
+ //userMapper.addUser(user);
+ user.setUserName("adasa");
+ userMapper.updateUser(user);
+ }
+
+ @Test
+ public void test4(){
+ List orders = orderMapper.findAllOrderAndUser();
+ for (Order order : orders) {
+ System.out.println(order);
+ }
+ }
+
+ /**
+ * pageHelper插件使用
+ */
+ @Test
+ public void test5(){
+ PageHelper.startPage(1,1);
+ List orders = orderMapper.findAllOrderAndUser();
+ for (Order order : orders) {
+ System.out.println(order);
+ }
+ PageInfo pageInfo = new PageInfo(orders);
+ }
+
+ @Test
+ public void test6() throws IOException {
+ InputStream inputStream = Resources.getResourceAsStream("sqlMapConfig.xml");
+ SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
+ SqlSession sqlSession = sqlSessionFactory.openSession();
+ UserMapper userMapper = sqlSession.getMapper(UserMapper.class);
+ User user = new User();
+ user.setId(1);
+ User user1 = userMapper.selectOne(user);
+ System.out.println(user1);
+
+
+ Example example = new Example(User.class);
+ example.createCriteria().andEqualTo("id",1).andEqualTo("username","ljkd");
+ List users = userMapper.selectByExample(example);
+ }
+
+}
diff --git a/MybatisLearning/mybatis_multitable/src/main/resources/IUserMapper.xml b/MybatisLearning/mybatis_multitable/src/main/resources/IUserMapper.xml
new file mode 100644
index 0000000..5b387e9
--- /dev/null
+++ b/MybatisLearning/mybatis_multitable/src/main/resources/IUserMapper.xml
@@ -0,0 +1,23 @@
+
+
+
+
+
+
+
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+
+
+
+
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+
+
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+
\ No newline at end of file
diff --git a/MybatisLearning/mybatis_multitable/src/main/resources/jdbc.properties b/MybatisLearning/mybatis_multitable/src/main/resources/jdbc.properties
new file mode 100644
index 0000000..b517f8e
--- /dev/null
+++ b/MybatisLearning/mybatis_multitable/src/main/resources/jdbc.properties
@@ -0,0 +1,5 @@
+jdbc.driver=com.mysql.jdbc.Driver
+jdbc.url=jdbc:mysql://localhost:3306/test
+jdbc.username=root
+jdbc.password=123guojing
+
diff --git a/MybatisLearning/mybatis_multitable/src/main/resources/log4j.properties b/MybatisLearning/mybatis_multitable/src/main/resources/log4j.properties
new file mode 100644
index 0000000..e499871
--- /dev/null
+++ b/MybatisLearning/mybatis_multitable/src/main/resources/log4j.properties
@@ -0,0 +1,15 @@
+### direct log messages to stdout ###
+log4j.appender.stdout=org.apache.log4j.ConsoleAppender
+log4j.appender.stdout.Target=System.out
+log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
+log4j.appender.stdout.layout.ConversionPattern=%d{ABSOLUTE} %5p %c{1}:%L - %m%n
+
+### direct messages to file mylog.log ###
+log4j.appender.file=org.apache.log4j.FileAppender
+log4j.appender.file.File=c:/mylog.log
+log4j.appender.file.layout=org.apache.log4j.PatternLayout
+log4j.appender.file.layout.ConversionPattern=%d{ABSOLUTE} %5p %c{1}:%L - %m%n
+
+### set log levels - for more verbose logging change 'info' to 'debug' ###
+
+log4j.rootLogger=debug, stdout
\ No newline at end of file
diff --git a/MybatisLearning/mybatis_multitable/src/main/resources/redis.properties b/MybatisLearning/mybatis_multitable/src/main/resources/redis.properties
new file mode 100644
index 0000000..631705e
--- /dev/null
+++ b/MybatisLearning/mybatis_multitable/src/main/resources/redis.properties
@@ -0,0 +1,5 @@
+redis.host=localhost
+redis.port=6379
+redis.connectionTimeout=5000
+redis.password=
+redis.database=0
\ No newline at end of file
diff --git a/MybatisLearning/mybatis_multitable/src/main/resources/sqlMapConfig.xml b/MybatisLearning/mybatis_multitable/src/main/resources/sqlMapConfig.xml
new file mode 100644
index 0000000..08021d2
--- /dev/null
+++ b/MybatisLearning/mybatis_multitable/src/main/resources/sqlMapConfig.xml
@@ -0,0 +1,59 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
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+
+
+
+
+
+
+
+
+
+
+
+
+
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+
+
diff --git a/MybatisLearning/mybatis_multitable/target/classes/IUserMapper.xml b/MybatisLearning/mybatis_multitable/target/classes/IUserMapper.xml
new file mode 100644
index 0000000..5b387e9
--- /dev/null
+++ b/MybatisLearning/mybatis_multitable/target/classes/IUserMapper.xml
@@ -0,0 +1,23 @@
+
+
+
+
+
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+
+
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+
+
+
+
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+
+
\ No newline at end of file
diff --git a/MybatisLearning/mybatis_multitable/target/classes/com/lagou/IOrderMapper.xml b/MybatisLearning/mybatis_multitable/target/classes/com/lagou/IOrderMapper.xml
new file mode 100644
index 0000000..4becb8a
--- /dev/null
+++ b/MybatisLearning/mybatis_multitable/target/classes/com/lagou/IOrderMapper.xml
@@ -0,0 +1,23 @@
+
+
+
+
+
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+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/MybatisLearning/mybatis_multitable/target/classes/com/lagou/IUserMapper.xml b/MybatisLearning/mybatis_multitable/target/classes/com/lagou/IUserMapper.xml
new file mode 100644
index 0000000..187ca96
--- /dev/null
+++ b/MybatisLearning/mybatis_multitable/target/classes/com/lagou/IUserMapper.xml
@@ -0,0 +1,40 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
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+
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+
+
\ No newline at end of file
diff --git a/MybatisLearning/mybatis_multitable/target/classes/com/lagou/mapper/IOrderMapper.class b/MybatisLearning/mybatis_multitable/target/classes/com/lagou/mapper/IOrderMapper.class
new file mode 100644
index 0000000..0c85e51
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diff --git a/MybatisLearning/mybatis_multitable/target/classes/com/lagou/mapper/IUserMapper.class b/MybatisLearning/mybatis_multitable/target/classes/com/lagou/mapper/IUserMapper.class
new file mode 100644
index 0000000..5e5c731
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diff --git a/MybatisLearning/mybatis_multitable/target/classes/com/lagou/mapper/UserMapper.class b/MybatisLearning/mybatis_multitable/target/classes/com/lagou/mapper/UserMapper.class
new file mode 100644
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diff --git a/MybatisLearning/mybatis_multitable/target/classes/com/lagou/plugin/MyPlugin.class b/MybatisLearning/mybatis_multitable/target/classes/com/lagou/plugin/MyPlugin.class
new file mode 100644
index 0000000..746dfc4
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diff --git a/MybatisLearning/mybatis_multitable/target/classes/com/lagou/pojo/Order.class b/MybatisLearning/mybatis_multitable/target/classes/com/lagou/pojo/Order.class
new file mode 100644
index 0000000..f75cee4
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diff --git a/MybatisLearning/mybatis_multitable/target/classes/com/lagou/pojo/User.class b/MybatisLearning/mybatis_multitable/target/classes/com/lagou/pojo/User.class
new file mode 100644
index 0000000..7b6b539
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diff --git a/MybatisLearning/mybatis_multitable/target/classes/com/lagou/test/CacheTest.class b/MybatisLearning/mybatis_multitable/target/classes/com/lagou/test/CacheTest.class
new file mode 100644
index 0000000..656ca33
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diff --git a/MybatisLearning/mybatis_multitable/target/classes/com/lagou/test/Testss.class b/MybatisLearning/mybatis_multitable/target/classes/com/lagou/test/Testss.class
new file mode 100644
index 0000000..6aa0f81
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diff --git a/MybatisLearning/mybatis_multitable/target/classes/jdbc.properties b/MybatisLearning/mybatis_multitable/target/classes/jdbc.properties
new file mode 100644
index 0000000..b517f8e
--- /dev/null
+++ b/MybatisLearning/mybatis_multitable/target/classes/jdbc.properties
@@ -0,0 +1,5 @@
+jdbc.driver=com.mysql.jdbc.Driver
+jdbc.url=jdbc:mysql://localhost:3306/test
+jdbc.username=root
+jdbc.password=123guojing
+
diff --git a/MybatisLearning/mybatis_multitable/target/classes/log4j.properties b/MybatisLearning/mybatis_multitable/target/classes/log4j.properties
new file mode 100644
index 0000000..e499871
--- /dev/null
+++ b/MybatisLearning/mybatis_multitable/target/classes/log4j.properties
@@ -0,0 +1,15 @@
+### direct log messages to stdout ###
+log4j.appender.stdout=org.apache.log4j.ConsoleAppender
+log4j.appender.stdout.Target=System.out
+log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
+log4j.appender.stdout.layout.ConversionPattern=%d{ABSOLUTE} %5p %c{1}:%L - %m%n
+
+### direct messages to file mylog.log ###
+log4j.appender.file=org.apache.log4j.FileAppender
+log4j.appender.file.File=c:/mylog.log
+log4j.appender.file.layout=org.apache.log4j.PatternLayout
+log4j.appender.file.layout.ConversionPattern=%d{ABSOLUTE} %5p %c{1}:%L - %m%n
+
+### set log levels - for more verbose logging change 'info' to 'debug' ###
+
+log4j.rootLogger=debug, stdout
\ No newline at end of file
diff --git a/MybatisLearning/mybatis_multitable/target/classes/redis.properties b/MybatisLearning/mybatis_multitable/target/classes/redis.properties
new file mode 100644
index 0000000..631705e
--- /dev/null
+++ b/MybatisLearning/mybatis_multitable/target/classes/redis.properties
@@ -0,0 +1,5 @@
+redis.host=localhost
+redis.port=6379
+redis.connectionTimeout=5000
+redis.password=
+redis.database=0
\ No newline at end of file
diff --git a/MybatisLearning/mybatis_multitable/target/classes/sqlMapConfig.xml b/MybatisLearning/mybatis_multitable/target/classes/sqlMapConfig.xml
new file mode 100644
index 0000000..08021d2
--- /dev/null
+++ b/MybatisLearning/mybatis_multitable/target/classes/sqlMapConfig.xml
@@ -0,0 +1,59 @@
+
+
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diff --git a/MybatisLearning/mybatis_quickstart/.idea/compiler.xml b/MybatisLearning/mybatis_quickstart/.idea/compiler.xml
new file mode 100644
index 0000000..d808334
--- /dev/null
+++ b/MybatisLearning/mybatis_quickstart/.idea/compiler.xml
@@ -0,0 +1,13 @@
+
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+
\ No newline at end of file
diff --git a/MybatisLearning/mybatis_quickstart/.idea/encodings.xml b/MybatisLearning/mybatis_quickstart/.idea/encodings.xml
new file mode 100644
index 0000000..15a15b2
--- /dev/null
+++ b/MybatisLearning/mybatis_quickstart/.idea/encodings.xml
@@ -0,0 +1,4 @@
+
+
+
+
\ No newline at end of file
diff --git a/MybatisLearning/mybatis_quickstart/.idea/inspectionProfiles/Project_Default.xml b/MybatisLearning/mybatis_quickstart/.idea/inspectionProfiles/Project_Default.xml
new file mode 100644
index 0000000..6560a98
--- /dev/null
+++ b/MybatisLearning/mybatis_quickstart/.idea/inspectionProfiles/Project_Default.xml
@@ -0,0 +1,36 @@
+
+
+
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+
\ No newline at end of file
diff --git a/MybatisLearning/mybatis_quickstart/.idea/misc.xml b/MybatisLearning/mybatis_quickstart/.idea/misc.xml
new file mode 100644
index 0000000..4b661a5
--- /dev/null
+++ b/MybatisLearning/mybatis_quickstart/.idea/misc.xml
@@ -0,0 +1,14 @@
+
+
+
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+
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+
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+
+
\ No newline at end of file
diff --git a/MybatisLearning/mybatis_quickstart/.idea/uiDesigner.xml b/MybatisLearning/mybatis_quickstart/.idea/uiDesigner.xml
new file mode 100644
index 0000000..e96534f
--- /dev/null
+++ b/MybatisLearning/mybatis_quickstart/.idea/uiDesigner.xml
@@ -0,0 +1,124 @@
+
+
+
+
+ -
+
+
+ -
+
+
+ -
+
+
+ -
+
+
+ -
+
+
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+ -
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+ -
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+ -
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+ -
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+ -
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+ -
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+ -
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+ -
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+ -
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+ -
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+ -
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+ -
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+ -
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+ -
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+ -
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+ -
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+ -
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+ -
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+ -
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+ -
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+
+
+
+
\ No newline at end of file
diff --git a/MybatisLearning/mybatis_quickstart/.idea/workspace.xml b/MybatisLearning/mybatis_quickstart/.idea/workspace.xml
new file mode 100644
index 0000000..096beb1
--- /dev/null
+++ b/MybatisLearning/mybatis_quickstart/.idea/workspace.xml
@@ -0,0 +1,662 @@
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+
+
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+
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+ 1615397075459
+
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+ 1615397075459
+
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+
+
+
+
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+
+
+
+
+
+
+
+
+
+
+
+
+
+ No facets are configured
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+ 1.8
+
+
+
+
+
+
+
+ mybatis_quickstart
+
+
+
+
+
+
+
+ 1.8
+
+
+
+
+
+
+
+ Maven: junit:junit:4.12
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/MybatisLearning/mybatis_quickstart/mybatis_quickstart.iml b/MybatisLearning/mybatis_quickstart/mybatis_quickstart.iml
new file mode 100644
index 0000000..78b2cc5
--- /dev/null
+++ b/MybatisLearning/mybatis_quickstart/mybatis_quickstart.iml
@@ -0,0 +1,2 @@
+
+
\ No newline at end of file
diff --git a/MybatisLearning/mybatis_quickstart/pom.xml b/MybatisLearning/mybatis_quickstart/pom.xml
new file mode 100644
index 0000000..0b5e630
--- /dev/null
+++ b/MybatisLearning/mybatis_quickstart/pom.xml
@@ -0,0 +1,46 @@
+
+
+ 4.0.0
+
+ com.lagou
+ mybatis_quickstart
+ 1.0-SNAPSHOT
+
+
+
+
+ org.mybatis
+ mybatis
+ 3.4.5
+
+
+
+ mysql
+ mysql-connector-java
+ 5.1.6
+ runtime
+
+
+
+ junit
+ junit
+ 4.12
+ test
+
+
+
+ log4j
+ log4j
+ 1.2.12
+
+
+ org.junit.jupiter
+ junit-jupiter-api
+ RELEASE
+ compile
+
+
+
+
\ No newline at end of file
diff --git a/MybatisLearning/mybatis_quickstart/src/main/java/com/lagou/dao/IUserDao.java b/MybatisLearning/mybatis_quickstart/src/main/java/com/lagou/dao/IUserDao.java
new file mode 100644
index 0000000..9924219
--- /dev/null
+++ b/MybatisLearning/mybatis_quickstart/src/main/java/com/lagou/dao/IUserDao.java
@@ -0,0 +1,16 @@
+package com.lagou.dao;
+
+import com.lagou.pojo.User;
+
+
+import java.io.IOException;
+import java.util.List;
+
+public interface IUserDao {
+ public List findAll() throws IOException;
+
+ public List findByCondition(User user);
+
+
+ public List findByIds(int[] ids);
+}
diff --git a/MybatisLearning/mybatis_quickstart/src/main/java/com/lagou/dao/UserDaoImpl.java b/MybatisLearning/mybatis_quickstart/src/main/java/com/lagou/dao/UserDaoImpl.java
new file mode 100644
index 0000000..734ce7c
--- /dev/null
+++ b/MybatisLearning/mybatis_quickstart/src/main/java/com/lagou/dao/UserDaoImpl.java
@@ -0,0 +1,43 @@
+package com.lagou.dao;
+
+import com.lagou.pojo.User;
+import org.apache.ibatis.io.Resources;
+import org.apache.ibatis.session.SqlSession;
+import org.apache.ibatis.session.SqlSessionFactory;
+import org.apache.ibatis.session.SqlSessionFactoryBuilder;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.List;
+
+/**
+ * 抽象的abstract class继承接口是不用实现方法
+ */
+public class UserDaoImpl implements IUserDao {
+ /**
+ * 传统的dao层开发方式
+ * @return
+ * @throws IOException
+ */
+ public List findAll() throws IOException {
+ //Resource工具类，配置文件的加载，把配置文件加载成字节输入流
+ InputStream resourceAsStream = Resources.getResourceAsStream("sqlMapConfig.xml");
+ //解析了配置文件，并创建了SqlSessionFactory
+ SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(resourceAsStream);
+ SqlSession sqlSession = sqlSessionFactory.openSession();//默认开启一个事务，但是事务不会提交
+ //所以在进行增删改 要手动提交事务
+ //sqlSessionFactory.openSession(true)表名会自动提交事务
+ List users = sqlSession.selectList("user.findAll");
+ sqlSession.close();
+ return users;
+ }
+
+ public List findByCondition(User user) {
+ return null;
+ }
+
+ public List findByIds(int[] ids) {
+ return null;
+ }
+
+}
diff --git a/MybatisLearning/mybatis_quickstart/src/main/java/com/lagou/pojo/User.java b/MybatisLearning/mybatis_quickstart/src/main/java/com/lagou/pojo/User.java
new file mode 100644
index 0000000..b98ca80
--- /dev/null
+++ b/MybatisLearning/mybatis_quickstart/src/main/java/com/lagou/pojo/User.java
@@ -0,0 +1,39 @@
+package com.lagou.pojo;
+
+public class User {
+ private Integer id;
+ private String userName;
+
+ public User(){
+
+ }
+
+ public User(Integer id, String userName) {
+ this.id = id;
+ this.userName = userName;
+ }
+
+ public Integer getId() {
+ return id;
+ }
+
+ public void setId(Integer id) {
+ this.id = id;
+ }
+
+ public String getUserName() {
+ return userName;
+ }
+
+ public void setUserName(String userName) {
+ this.userName = userName;
+ }
+
+ @Override
+ public String toString() {
+ return "User{" +
+ "id=" + id +
+ ", userName='" + userName + '\'' +
+ '}';
+ }
+}
diff --git a/MybatisLearning/mybatis_quickstart/src/main/java/com/lagou/test/test.java b/MybatisLearning/mybatis_quickstart/src/main/java/com/lagou/test/test.java
new file mode 100644
index 0000000..215b4f4
--- /dev/null
+++ b/MybatisLearning/mybatis_quickstart/src/main/java/com/lagou/test/test.java
@@ -0,0 +1,111 @@
+package com.lagou.test;
+
+import com.lagou.dao.IUserDao;
+import com.lagou.dao.UserDaoImpl;
+import com.lagou.pojo.User;
+import org.apache.ibatis.io.Resources;
+import org.apache.ibatis.session.SqlSession;
+import org.apache.ibatis.session.SqlSessionFactory;
+import org.apache.ibatis.session.SqlSessionFactoryBuilder;
+import org.junit.jupiter.api.Test;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.List;
+
+public class test {
+
+ @Test
+ public void test1() throws IOException {
+ //Resource工具类，配置文件的加载，把配置文件加载成字节输入流
+ InputStream resourceAsStream = Resources.getResourceAsStream("sqlMapConfig.xml");
+ //解析了配置文件，并创建了SqlSessionFactory
+ SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(resourceAsStream);
+ SqlSession sqlSession = sqlSessionFactory.openSession();//默认开启一个事务，但是事务不会提交
+ //所以在进行增删改 要手动提交事务
+ //sqlSessionFactory.openSession(true)表名会自动提交事务
+ List users = sqlSession.selectList("user.findAll");
+ for (User user : users){
+ System.out.println(user.getId());
+ }
+ sqlSession.close();
+ }
+
+ @Test
+ public void test2() throws IOException {
+ //Resource工具类，配置文件的加载，把配置文件加载成字节输入流
+ InputStream resourceAsStream = Resources.getResourceAsStream("sqlMapConfig.xml");
+ //解析了配置文件，并创建了SqlSessionFactory
+ SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(resourceAsStream);
+ SqlSession sqlSession = sqlSessionFactory.openSession(true);//默认开启一个事务，但是事务不会提交
+ //所以在进行增删改 要手动提交事务
+ //sqlSessionFactory.openSession(true)表名会自动提交事务
+ User user = new User();
+ user.setId(3);
+ user.setUserName("hahha");
+ sqlSession.insert("user.saveUser",user);
+
+ sqlSession.close();
+ }
+
+ /**
+ * 传统的dao层开发方式，麻烦，需要实现文件流转换与SQL编写
+ * @throws IOException
+ */
+ @Test
+ public void test3() throws IOException{
+ UserDaoImpl userDao = new UserDaoImpl();
+ List users = userDao.findAll();
+ for (User user : users){
+ System.out.println(user.getId());
+ }
+ }
+
+
+ /**
+ * 使用动态代理方式，创建一个userDao的代理对象，通过该对象执行文件流的存入与解析
+ */
+ @Test
+ public void test4() throws IOException{
+ InputStream resourceAsStream = Resources.getResourceAsStream("sqlMapConfig.xml");
+ //解析了配置文件，并创建了SqlSessionFactory
+ SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(resourceAsStream);
+ SqlSession sqlSession = sqlSessionFactory.openSession(true);//默认开启一个事务，但是事务不会提交
+ IUserDao dao = sqlSession.getMapper(IUserDao.class);//获取一个动态代理对象
+ List all = dao.findAll();
+ for (User user : all) {
+ System.out.println(user);
+ }
+
+ }
+
+
+ @Test
+ public void test5() throws IOException{
+ InputStream resourceAsStream = Resources.getResourceAsStream("sqlMapConfig.xml");
+ //解析了配置文件，并创建了SqlSessionFactory
+ SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(resourceAsStream);
+ SqlSession sqlSession = sqlSessionFactory.openSession(true);//默认开启一个事务，但是事务不会提交
+ IUserDao dao = sqlSession.getMapper(IUserDao.class);//获取一个动态代理对象
+ User user = new User();
+ user.setId(3);
+ List all = dao.findByCondition(user);
+ System.out.println(all);
+
+ }
+
+
+ @Test
+ public void test6() throws IOException{
+ InputStream resourceAsStream = Resources.getResourceAsStream("sqlMapConfig.xml");
+ //解析了配置文件，并创建了SqlSessionFactory
+ SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(resourceAsStream);
+ SqlSession sqlSession = sqlSessionFactory.openSession(true);//默认开启一个事务，但是事务不会提交
+ IUserDao dao = sqlSession.getMapper(IUserDao.class);//获取一个动态代理对象
+ int[] arr = {1,2,3};
+ List all = dao.findByIds(arr);
+ System.out.println(all);
+
+ }
+
+}
diff --git a/MybatisLearning/mybatis_quickstart/src/main/resources/UserMapper.xml b/MybatisLearning/mybatis_quickstart/src/main/resources/UserMapper.xml
new file mode 100644
index 0000000..206f42b
--- /dev/null
+++ b/MybatisLearning/mybatis_quickstart/src/main/resources/UserMapper.xml
@@ -0,0 +1,50 @@
+
+
+
+
+
+
+ select * from user
+
+
+
+
+
+
+ insert into user values (#{id},#{userName})
+
+
+
+
+ delete from user where id = #{abc}
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/MybatisLearning/mybatis_quickstart/src/main/resources/jdbc.properties b/MybatisLearning/mybatis_quickstart/src/main/resources/jdbc.properties
new file mode 100644
index 0000000..b517f8e
--- /dev/null
+++ b/MybatisLearning/mybatis_quickstart/src/main/resources/jdbc.properties
@@ -0,0 +1,5 @@
+jdbc.driver=com.mysql.jdbc.Driver
+jdbc.url=jdbc:mysql://localhost:3306/test
+jdbc.username=root
+jdbc.password=123guojing
+
diff --git a/MybatisLearning/mybatis_quickstart/src/main/resources/log4j.properties b/MybatisLearning/mybatis_quickstart/src/main/resources/log4j.properties
new file mode 100644
index 0000000..e499871
--- /dev/null
+++ b/MybatisLearning/mybatis_quickstart/src/main/resources/log4j.properties
@@ -0,0 +1,15 @@
+### direct log messages to stdout ###
+log4j.appender.stdout=org.apache.log4j.ConsoleAppender
+log4j.appender.stdout.Target=System.out
+log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
+log4j.appender.stdout.layout.ConversionPattern=%d{ABSOLUTE} %5p %c{1}:%L - %m%n
+
+### direct messages to file mylog.log ###
+log4j.appender.file=org.apache.log4j.FileAppender
+log4j.appender.file.File=c:/mylog.log
+log4j.appender.file.layout=org.apache.log4j.PatternLayout
+log4j.appender.file.layout.ConversionPattern=%d{ABSOLUTE} %5p %c{1}:%L - %m%n
+
+### set log levels - for more verbose logging change 'info' to 'debug' ###
+
+log4j.rootLogger=debug, stdout
\ No newline at end of file
diff --git a/MybatisLearning/mybatis_quickstart/src/main/resources/sqlMapConfig.xml b/MybatisLearning/mybatis_quickstart/src/main/resources/sqlMapConfig.xml
new file mode 100644
index 0000000..9b58dd5
--- /dev/null
+++ b/MybatisLearning/mybatis_quickstart/src/main/resources/sqlMapConfig.xml
@@ -0,0 +1,35 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/MybatisLearning/mybatis_quickstart/target/classes/UserMapper.xml b/MybatisLearning/mybatis_quickstart/target/classes/UserMapper.xml
new file mode 100644
index 0000000..206f42b
--- /dev/null
+++ b/MybatisLearning/mybatis_quickstart/target/classes/UserMapper.xml
@@ -0,0 +1,50 @@
+
+
+
+
+
+
+ select * from user
+
+
+
+
+
+
+ insert into user values (#{id},#{userName})
+
+
+
+
+ delete from user where id = #{abc}
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/MybatisLearning/mybatis_quickstart/target/classes/com/lagou/dao/IUserDao.class b/MybatisLearning/mybatis_quickstart/target/classes/com/lagou/dao/IUserDao.class
new file mode 100644
index 0000000..51f03c1
Binary files /dev/null and b/MybatisLearning/mybatis_quickstart/target/classes/com/lagou/dao/IUserDao.class differ
diff --git a/MybatisLearning/mybatis_quickstart/target/classes/com/lagou/dao/UserDaoImpl.class b/MybatisLearning/mybatis_quickstart/target/classes/com/lagou/dao/UserDaoImpl.class
new file mode 100644
index 0000000..2a7172b
Binary files /dev/null and b/MybatisLearning/mybatis_quickstart/target/classes/com/lagou/dao/UserDaoImpl.class differ
diff --git a/MybatisLearning/mybatis_quickstart/target/classes/com/lagou/pojo/User.class b/MybatisLearning/mybatis_quickstart/target/classes/com/lagou/pojo/User.class
new file mode 100644
index 0000000..916ce0c
Binary files /dev/null and b/MybatisLearning/mybatis_quickstart/target/classes/com/lagou/pojo/User.class differ
diff --git a/MybatisLearning/mybatis_quickstart/target/classes/com/lagou/test/test.class b/MybatisLearning/mybatis_quickstart/target/classes/com/lagou/test/test.class
new file mode 100644
index 0000000..67e9a7c
Binary files /dev/null and b/MybatisLearning/mybatis_quickstart/target/classes/com/lagou/test/test.class differ
diff --git a/MybatisLearning/mybatis_quickstart/target/classes/jdbc.properties b/MybatisLearning/mybatis_quickstart/target/classes/jdbc.properties
new file mode 100644
index 0000000..b517f8e
--- /dev/null
+++ b/MybatisLearning/mybatis_quickstart/target/classes/jdbc.properties
@@ -0,0 +1,5 @@
+jdbc.driver=com.mysql.jdbc.Driver
+jdbc.url=jdbc:mysql://localhost:3306/test
+jdbc.username=root
+jdbc.password=123guojing
+
diff --git a/MybatisLearning/mybatis_quickstart/target/classes/log4j.properties b/MybatisLearning/mybatis_quickstart/target/classes/log4j.properties
new file mode 100644
index 0000000..e499871
--- /dev/null
+++ b/MybatisLearning/mybatis_quickstart/target/classes/log4j.properties
@@ -0,0 +1,15 @@
+### direct log messages to stdout ###
+log4j.appender.stdout=org.apache.log4j.ConsoleAppender
+log4j.appender.stdout.Target=System.out
+log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
+log4j.appender.stdout.layout.ConversionPattern=%d{ABSOLUTE} %5p %c{1}:%L - %m%n
+
+### direct messages to file mylog.log ###
+log4j.appender.file=org.apache.log4j.FileAppender
+log4j.appender.file.File=c:/mylog.log
+log4j.appender.file.layout=org.apache.log4j.PatternLayout
+log4j.appender.file.layout.ConversionPattern=%d{ABSOLUTE} %5p %c{1}:%L - %m%n
+
+### set log levels - for more verbose logging change 'info' to 'debug' ###
+
+log4j.rootLogger=debug, stdout
\ No newline at end of file
diff --git a/MybatisLearning/mybatis_quickstart/target/classes/sqlMapConfig.xml b/MybatisLearning/mybatis_quickstart/target/classes/sqlMapConfig.xml
new file mode 100644
index 0000000..9b58dd5
--- /dev/null
+++ b/MybatisLearning/mybatis_quickstart/target/classes/sqlMapConfig.xml
@@ -0,0 +1,35 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
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diff --git a/MybatisLearning/pom.xml b/MybatisLearning/pom.xml
new file mode 100644
index 0000000..a91c065
--- /dev/null
+++ b/MybatisLearning/pom.xml
@@ -0,0 +1,12 @@
+
+
+ 4.0.0
+
+ com.learning
+ MybatisLearing
+ 1.0-SNAPSHOT
+
+
+
\ No newline at end of file
diff --git a/pom.xml b/pom.xml
new file mode 100644
index 0000000..535c30f
--- /dev/null
+++ b/pom.xml
@@ -0,0 +1,12 @@
+
+
+ 4.0.0
+
+ com.learning
+ JavaSeniorEngineer
+ 1.0-SNAPSHOT
+
+
+
\ No newline at end of file
diff --git "a/\345\233\233\345\244\247\345\217\221\346\230\216\346\200\273\350\247\210/JDK\347\232\204\346\225\260\346\215\256\347\273\223\346\236\204.md" "b/\345\233\233\345\244\247\345\217\221\346\230\216\346\200\273\350\247\210/JDK\347\232\204\346\225\260\346\215\256\347\273\223\346\236\204.md"
deleted file mode 100644
index 0640f74..0000000
--- "a/\345\233\233\345\244\247\345\217\221\346\230\216\346\200\273\350\247\210/JDK\347\232\204\346\225\260\346\215\256\347\273\223\346\236\204.md"
+++ /dev/null
@@ -1,292 +0,0 @@
-# 以下是Java中常用的数据结构的基础知识
-
-
-
-Java集合类主要由两个根接口`Collection`和`Map`派生出来的，`Collection`派生出了三个子接口：`List`、`Set`、`Queue`（Java5新增的队列）
-
-因此Java集合大致也可分成`List`、`Set`、`Queue`、`Map`四种接口体系，（注意：Map不是Collection的子接口）
-
-其中List代表了有序可重复集合，可直接根据元素的索引来访问；Set代表无序不可重复集合，只能根据元素本身来访问；
-
-Queue是队列集合；Map代表的是存储key-value对的集合，可根据元素的key来访问value
-
-上图中淡绿色背景覆盖的是集合体系中常用的实现类，分别是`ArrayList`、`LinkedList`、`ArrayQueue`、`HashSet`、`TreeSet`、`HashMap`、`TreeMap`等实现类
-
-# 1 List家族
-List接口继承图：
-
-
-
-`JDK`中的List家族主要包括了`ArrayList`、 `LinkedList`、`Vector`、`CopyOnWriteArrayList`、`UnmodifiableList` 、`SynchronizedList`
-
-## 1.1 List
-
-List集合是有序的，Developer可对其中每个元素的插入位置进行精确地控制，可以通过索引来访问元素，遍历元素
-
-List类在Java.awt包里，List在java.util包里,但使用时是用List\
-
-因为List是列表，本质上是一个数组，没有类型，使用List\泛型主要为了列表的数据类型
-
-### 1.1.1 代码方法实战
-
-```java
- void demo_1(){
- //实例化List
- List list = new ArrayList<>();
- //实例化直接赋值
- List list1 = Arrays.asList("a","c","m","d");
- //添加元素
- list.add("a");
- System.out.println("demo_1添加 a 后输出list:"+list);//output:[a]
- list.add("b");
- System.out.println("demo_1添加 a b 后输出list:"+list);//output:[a, b]
- list.add(2,"c");//可以看出本质上是个数组,集合有序，每次添加都在index后面添加
- list.add("d");
- System.out.println("添加 c d 后输出list:"+list);
- //修改元素
- list.set(2,"e");
- System.out.println("修改元素 2 后输出list:"+list);
- list.remove(2);
- System.out.println("输出list:"+list);
- list.remove("c");//remove(object)意思就是删除list中的元素
- System.out.println(" 后输出list:"+list);
- //查询
- String element = list.get(1);//get(index)获取第几个元素
- int index = list.indexOf("a");//indexOf(object)获取list中元素的位置
- System.out.println("输出element index:"+element+" "+index);//output:b 0
- //Java8处理输出
- List collect = list.stream().collect(Collectors.toList());
- System.out.println(" 后输出collect:"+collect);//output:[a, b, d]
- list.removeAll(list1);
- System.out.println(" 后removeAlllist:"+list);//output:[b]
- //遍历list-forEach方法，Java8新特性
- list.forEach(System.out::println);//output:b
- list.forEach(item->{
- System.out.println(item);//item就是list中的元素，便于对括号里面的元素做处理
- });//output:b
-
- for(String item : list){
- System.out.print(item + " ");
- }//output:b
-
- }
-```
-
-**注意**：输出的是`["a","b","c"]`，带有`[]`
-
-### 1.1.2 List常用方法总结
-#### （1）void add(Object element)
-向列表的尾部添加指定的元素
-
-#### （2）int size()
-返回列表中的元素个数
-
-#### （3）E get(int index)
-返回列表中指定位置的元素，index从0开始
-
-#### （4）void add(int index, Object element)
-在列表的指定位置插入指定元素
-
-#### （5）void set(int i, Object element)
-将索引i位置元素替换为元素element并返回被替换的元素
-
-#### （6）void clear()
-从列表中移除所有元素
-
-#### （7）boolean isEmpty()
-判断列表是否包含元素，不包含元素则返回 true，否则返回false
-
-#### （8）iterator()
-返回按适当顺序在列表的元素上进行迭代的迭代器
-
-#### （9）boolean contains(Object o)
-如果列表包含指定的元素，则返回 true
-
-#### （10）E remove(int index)
-移除列表中指定位置的元素，并返回被删元素
-
-#### （11）boolean remove(Object o)
-移除集合中第一次出现的指定元素，移除成功返回true，否则返回false
-
-#### （12）void forEach(ConSumer action)
-forEach是for的增强版 其中System.out::println这段代码其实就是Consumer接口的一个实现方式
-
-```java
-list.forEach(System.out::println);//output:b
- list.forEach(item->{
- System.out.println(item);//item就是list中的元素，便于对括号里面的元素做处理
- });//output:b
-```
-#### （13）toArray
-
-```java
-
- //方法1，使用不带参数的toArray方法
- String[] arr1=new String[list.size()];
- list.toArray(arr);//此时arr就有了list中的值了
- //方法2，使用带参数的toArray方法
- String[] arr2=(String[])list.toArray(new String[0]);//参数含义的解释：要存储列表中元素的数组，如果它足够大的话；否则为此目的分配一个运行时类型相同的新数组。
-
-
-```
-**注意：** 下面方法写法错误
-
-> String[]arr=(String[])list.toArray();//会出现java.lang.ClassCastException
-
-## 1.2 ArrayList
-
-ArrayList是集合的一种实现，实现了接口`List`，List接口继承了`Collection`接口，而Collection是所有集合类的父类。ArrayList使用非常广泛，不论是数据库表查询，excel导入解析，还是网站数据爬取都需要使用到，了解ArrayList原理及使用方法显得非常重要。
-
-### 1.2.1 定义一个ArrayList
-```java
-List list = new ArrayList<>();
-//默认创建一个ArrayList集合
-List list = new ArrayList<>();
-//创建一个初始化长度为100的ArrayList集合
-List initlist = new ArrayList<>(100);
-//将其他类型的集合转为ArrayList
-List setList = new ArrayList<>(new HashSet());
-```
-
-### 1.2.2 ArrayList源码解析
-
-```java
-public class ArrayList extends AbstractList implements List, RandomAccess, Cloneable, java.io.Serializable {
- /**
- * Default initial capacity.
- */
- private static final int DEFAULT_CAPACITY = 10;
-
- /**
- * Shared empty array instance used for empty instances.
- */
- private static final Object[] EMPTY_ELEMENTDATA = {};
-
- /**
- * Shared empty array instance used for default sized empty instances. We
- * distinguish this from EMPTY_ELEMENTDATA to know how much to inflate when
- * first element is added.
- */
- private static final Object[] DEFAULTCAPACITY_EMPTY_ELEMENTDATA = {};
-
- /**
- * The array buffer into which the elements of the ArrayList are stored.
- * The capacity of the ArrayList is the length of this array buffer. Any
- * empty ArrayList with elementData == DEFAULTCAPACITY_EMPTY_ELEMENTDATA
- * will be expanded to DEFAULT_CAPACITY when the first element is added.
- */
- transient Object[] elementData; // non-private to simplify nested class access
-
- /**
- * The size of the ArrayList (the number of elements it contains).
- *
- * @serial
- */
- private int size;
-
- /**
- * Constructs an empty list with the specified initial capacity.
- *
- * @param initialCapacity the initial capacity of the list
- * @throws IllegalArgumentException if the specified initial capacity
- * is negative
- */
- public ArrayList(int initialCapacity) {
- if (initialCapacity > 0) {
- this.elementData = new Object[initialCapacity];
- } else if (initialCapacity == 0) {
- this.elementData = EMPTY_ELEMENTDATA;
- } else {
- throw new IllegalArgumentException("Illegal Capacity: "+
- initialCapacity);
- }
- }
-
- /**
- * Constructs an empty list with an initial capacity of ten.
- */
- public ArrayList() {
- this.elementData = DEFAULTCAPACITY_EMPTY_ELEMENTDATA;
- }
-
- /**
- * Constructs a list containing the elements of the specified
- * collection, in the order they are returned by the collection's
- * iterator.
- *
- * @param c the collection whose elements are to be placed into this list
- * @throws NullPointerException if the specified collection is null
- */
- public ArrayList(Collection c) {
- elementData = c.toArray();
- if ((size = elementData.length) != 0) {
- // c.toArray might (incorrectly) not return Object[] (see 6260652)
- if (elementData.getClass() != Object[].class)
- elementData = Arrays.copyOf(elementData, size, Object[].class);
- } else {
- // replace with empty array.
- this.elementData = EMPTY_ELEMENTDATA;
- }
- }
-}
-```
-从源码可以看出，ArrayList非线程安全，底层是一个`Object[]
-elementData`，添加到ArrayList中的数据保存在了elementData属性中，
-有第三个构造函数：`ArrayList()`、`ArrayList(int
-initialCapacity)`、`ArrayList(Collection c)`。
-
-+ 当调用`new ArrayList<>()`时，将一个空数组{}赋值给了elementData，这个时候集合的长度size为默认长度0；
-+ 当调用`new ArrayList<>(100)`时，根据传入的长度，new一个Object[100]赋值给elementData，当然如果玩儿的话，传了一个0，那么将一个空数组{}赋值给了elementData；
-+ 当调用`new ArrayList<>(new HashSet())`时，根据源码，我们可知，可以传递任何实现了Collection接口的类，将传递的集合调用`toArray()`方法转为数组内赋值给elementData;
-
-
-#### tips:线程安全与线程不安全理解
-线程安全就是`多线程访问`时，采用了`加锁`机制，当一个线程访问该类的某个数据时，进行保护，其他线程不能进行访问直到该线程读取完，其他线程才可使用。不会出现数据不一致或者数据污染。
-
-线程不安全就是`不提供数据访问保护`，有可能出现多个线程先后更改数据造成所得到的数据是`脏数据`
-
-##### 概念：
-
-如果你的代码所在的进程中有多个线程在同时运行，而这些线程可能会同时运行这段代码。如果每次运行结果和单线程运行的结果是一样的，而且其他的变量的值也和预期的是一样的，就是线程安全的。
-或者说:一个类或者程序所提供的接口对于线程来说是`原子操作`或者多个线程之间的切换不会导致该接口的执行结果存在`二义性`,也就是说我们不用考虑同步的问题。
-线程安全问题都是由`全局变量`及`静态变量`引起的。
-若每个线程中对`全局变量`、`静态变量`只有读操作，而无写操作，一般来说，这个全局变量是线程安全的；若有多个线程同时执行写操作，一般都需要考虑`线程同步`，否则的话就可能影响线程安全。
-
-##### 安全性：
-
-比如一个 `ArrayList` 类，在添加一个元素的时候，它可能会有两步来完成：1. 在 Items[Size] 的位置存放此元素；2. 增大 Size 的值。
-在单线程运行的情况下，如果 Size = 0，添加一个元素后，此元素在位置 0，而且 Size=1；
-而如果是在多线程情况下，比如有两个线程，线程 A 先将元素存放在位置 0。但是此时 CPU 调度线程A暂停，线程 B 得到运行的机会。线程B也向此 ArrayList 添加元素，因为此时 Size 仍然等于 0 （注意哦，我们假设的是添加一个元素是要两个步骤哦，而线程A仅仅完成了步骤1），所以线程B也将元素存放在位置0。然后线程A和线程B都继续运行，都增加 Size 的值。
-那好，我们来看看 ArrayList 的情况，元素实际上只有一个，存放在位置 0，而 Size 却等于 2。这就是“线程不安全”了。
-
-##### 不可变：
-
-不可变的对象**一定**是**线程安全**的，并且永远也不需要额外的同步
-因为一个不可变的对象只要构建正确，其外部可见状态永远也不会改变，永远也不会看到它处于不一致的状态。Java
-类库中大多数基本数值类如 `Integer` 、 `String` 和 `BigInteger` 都是不可变的。
-需要注意的是，对于Integer，该类不提供add方法，加法是使用+来直接操作。而+操作是不具线程安全的。这是提供原子操作类AtomicInteger的原。
-
-### 1.2.2 数组、ArrayList中的区别
-数组在内存中是连续存储的，所以它的索引速度是非常的快，而且赋值与修改元素也很简单，比如：
-```java
-string[] s=new string[3];
-//赋值
- s[0]="a"; s[1]="b"; s[2]="c";
-//修改
- s[1]="b1";
-```
-总所周知，数组在中间插入数据时，会移动后面的数据。而且在声明数组时，必须指明数组长度，长度过长会造成内存溢出，长度过短，会造成数据溢出错误，所以ArrayList对象可以克服这些缺点。
-
-## 1.3 LinkedList
-
-
-## 1.4 Vector
-## 1.5 CopyOnWriteArrayList
-## 1.6 UnmodifiableList
-## 1.7 SynchronizedList
-
-# 2 Set家族
-## 2.1 Set
-## 2.2 HashSet
-### 2.2.1 HashSet集合是不支持排序的，但是我们可以通过TreeSet集合对其进行间接排序
-https://blog.csdn.net/jmj18756235518/article/details/81557356
diff --git "a/\345\233\233\345\244\247\345\217\221\346\230\216\346\200\273\350\247\210/\346\223\215\344\275\234\347\263\273\347\273\237.md" "b/\345\233\233\345\244\247\345\217\221\346\230\216\346\200\273\350\247\210/\346\223\215\344\275\234\347\263\273\347\273\237.md"
deleted file mode 100644
index e69de29..0000000
diff --git "a/\345\233\233\345\244\247\345\217\221\346\230\216\346\200\273\350\247\210/\346\225\260\346\215\256\347\273\223\346\236\204.md" "b/\345\233\233\345\244\247\345\217\221\346\230\216\346\200\273\350\247\210/\346\225\260\346\215\256\347\273\223\346\236\204.md"
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--- "a/\345\233\233\345\244\247\345\217\221\346\230\216\346\200\273\350\247\210/\346\225\260\346\215\256\347\273\223\346\236\204.md"
+++ /dev/null
@@ -1,177 +0,0 @@
-# 1 时间复杂度
-
-## 1.1 复杂度：如何衡量程序运行的效率？
-
-## 1.2 复杂度是什么
-
-`复杂度是衡量代码运行效率的重要的度量因素`。在介绍复杂度之前，有必要先看一下复杂度和计算机实际任务处理效率的关系，从而了解降低复杂度的必要性。
-计算机通过一个个程序去执行计算任务，也就是对输入数据进行加工处理，并最终得到结果的过程。每个程序都是由代码构成的。可见，编写代码的核心就是要完成计算。但对于同一个计算任务，不同计算方法得到结果的过程复杂程度是不一样的，这对你实际的任务处理效率就有了非常大的影响。
-举个例子，你要在一个在线系统中实时处理数据。假设这个系统平均每分钟会新增 300M 的数据量。如果你的代码不能在 1 分钟内完成对这 300M 数据的处理，那么这个系统就会发生时间爆炸和空间爆炸。表现就是，电脑执行越来越慢，直到死机。因此，我们需要讲究合理的计算方法，去通过尽可能低复杂程度的代码完成计算任务。
-
-那提到降低复杂度，我们首先需要知道怎么衡量复杂度。而在实际衡量时，我们通常会围绕以下2 个维度进行。`首先，这段代码消耗的资源是什么`。一般而言，代码执行过程中会消耗计算时间和计算空间，那需要衡量的就是时间复杂度和空间复杂度。
-我举一个实际生活中的例子。某个十字路口没有建立立交桥时，所有车辆通过红绿灯分批次行驶通过。当大量汽车同时过路口的时候，就会分别消耗大家的时间。但建了立交桥之后，所有车辆都可以同时通过了，因为立交桥的存在，等于是消耗了空间资源，来换取了时间资源。
-
-`其次，这段代码对于资源的消耗是多少`。我们不会关注这段代码对于资源消耗的绝对量，因为不管是时间还是空间，它们的消耗程度都与输入的数据量高度相关，输入数据少时消耗自然就少。为了更客观地衡量消耗程度，我们通常会关注时间或者空间消耗量与输入数据量之间的关系。
-好，现在我们已经了解了衡量复杂度的两个纬度，那应该如何去计算复杂度呢？
-`复杂度是一个关于输入数据量 n 的函数`。假设你的代码复杂度是 f(n)，那么就用个大写字母 O 和括号，把 f(n) 括起来就可以了，即 O(f(n))。例如，O(n) 表示的是，复杂度与计算实例的个数 n 线性相关；O(logn) 表示的是，复杂度与计算实例的个数 n 对数相关。
-通常，复杂度的计算方法遵循以下几个原则：
-
-首先，`复杂度与具体的常系数无关`，例如 O(n) 和 O(2n) 表示的是同样的复杂度。我们详细分析下，O(2n) 等于 O(n+n)，也等于 O(n) + O(n)。也就是说，一段 O(n) 复杂度的代码只是先后执行两遍 O(n)，其复杂度是一致的。
-其次，`多项式级的复杂度相加的时候，选择高者作为结果`，例如 O(n²)+O(n) 和 O(n²) 表示的是同样的复杂度。具体分析一下就是，O(n²)+O(n) = O(n²+n)。随着 n 越来越大，二阶多项式的变化率是要比一阶多项式更大的。因此，只需要通过更大变化率的二阶多项式来表征复杂度就可以了。
-
-值得一提的是，`O(1) 也是表示一个特殊复杂度`，含义为某个任务通过有限可数的资源即可完成。此处有限可数的具体意义是，`与输入数据量 n 无关`。
-例如，你的代码处理 10 条数据需要消耗 5 个单位的时间资源，3 个单位的空间资源。处理 1000 条数据，还是只需要消耗 5 个单位的时间资源，3 个单位的空间资源。那么就能发现资源消耗与输入数据量无关，就是 O(1) 的复杂度。
-为了方便你理解不同计算方法对复杂度的影响，我们来看一个代码任务：对于输入的数组，输出与之逆序的数组。例如，输入 a=[1,2,3,4,5]，输出 [5,4,3,2,1]。
-先看方法一，建立并初始化数组 b，得到一个与输入数组等长的全零数组。通过一个 for 循环，从左到右将 a 数组的元素，从右到左地赋值到 b 数组中，最后输出数组 b 得到结果。
-### 1.2.1 方法一：
-```java
-public void s1_1() {
- int a[] = { 1, 2, 3, 4, 5 };
- int b[] = new int[5];
- for (int i = 0; i < a.length; i++) {
- b[i] = a[i];
- }
- for (int i = 0; i < a.length; i++) {
- b[a.length - i - 1] = a[i];
- }
- System.out.println(Arrays.toString(b));
-}
-```
-这段代码的输入数据是 a，数据量就等于数组 a 的长度。代码中有两个 for 循环，作用分别是给b 数组初始化和赋值，其执行次数都与输入数据量相等。因此，代码的时间复杂度就是 O(n)+O(n)，也就是 O(n)。
-空间方面主要体现在计算过程中，对于存储资源的消耗情况。上面这段代码中，我们定义了一个新的数组 b，它与输入数组 a 的长度相等。因此，空间复杂度就是 O(n)。
-`接着我们看一下第二种编码方法`，它定义了缓存变量 tmp，接着通过一个 for 循环，从 0 遍历到a 数组长度的一半（即 len(a)/2）。每次遍历执行的是什么内容？就是交换首尾对应的元素。最后打印数组 a，得到结果。
-
-### 1.2.2 方法二
-
-```java
-public void s1_2() {
- int a[] = { 1, 2, 3, 4, 5 };
- int tmp = 0;
- for (int i = 0; i < (a.length / 2); i++) {
- tmp = a[i];
- a[i] = a[a.length - i - 1];
- a[a.length - i - 1] = tmp;
- }
- System.out.println(Arrays.toString(a));
-}
-```
-
-这段代码包含了一个 for 循环，执行的次数是数组长度的一半，时间复杂度变成了 O(n/2)。根据复杂度与具体的常系数无关的性质，这段代码的时间复杂度也就是 O(n)。
-空间方面，我们定义了一个 tmp 变量，它与数组长度无关。也就是说，输入是 5 个元素的数组，需要一个 tmp 变量；输入是 50 个元素的数组，依然只需要一个 tmp 变量。因此，空间复杂度与输入数组长度无关，即 O(1)。
-可见，`对于同一个问题，采用不同的编码方法，对时间和空间的消耗是有可能不一样的`。因此，工程师在写代码的时候，一方面要完成任务目标；另一方面，也需要考虑时间复杂度和空间复杂度，以求用尽可能少的时间损耗和尽可能少的空间损耗去完成任务。
-
-## 1.3 时间复杂度与代码结构的关系
-
-好了，通过前面的内容，相信你已经对时间复杂度和空间复杂度有了很好的理解。从本质来看，时间复杂度与代码的结构有着非常紧密的关系；而空间复杂度与数据结构的设计有关，关于这一点我们会在下一讲进行详细阐述。接下来我先来系统地讲一下时间复杂度和代码结构的关系。
-`代码的时间复杂度，与代码的结构有非常强的关系`，我们一起来看一些具体的例子。
-例 1，定义了一个数组 a = [1, 4, 3]，查找数组 a 中的最大值，代码如下：
-
-```java
-public void s1_3() {
- int a[] = { 1, 4, 3 };
- int max_val = -1;
- for (int i = 0; i < a.length; i++) {
- if (a[i] > max_val) {
- max_val = a[i];
- }
- }
- System.out.println(max_val);
-}
-```
-
-这个例子比较简单，实现方法就是，暂存当前最大值并把所有元素遍历一遍即可。因为代码的结构上需要使用一个 for 循环，对数组所有元素处理一遍，所以时间复杂度为 O(n)。
-例2，下面的代码定义了一个数组 a = [1, 3, 4, 3, 4, 1, 3]，并会在这个数组中查找出现次数最多的那个数字：
-
-```java
-public void s1_4() {
- int a[] = { 1, 3, 4, 3, 4, 1, 3 };
- int val_max = -1;
- int time_max = 0;
- int time_tmp = 0;
- for (int i = 0; i < a.length; i++) {
- time_tmp = 0;
- for (int j = 0; j < a.length; j++) {
- if (a[i] == a[j]) {
- time_tmp += 1;
- }
- if (time_tmp > time_max) {
- time_max = time_tmp;
- val_max = a[i];
- }
- }
- }
- System.out.println(val_max);
-}
-```
-
-这段代码中，我们采用了双层循环的方式计算：第一层循环，我们对数组中的每个元素进行遍历；第二层循环，对于每个元素计算出现的次数，并且通过当前元素次数 time_tmp 和全局最大次数变量 time_max 的大小关系，持续保存出现次数最多的那个元素及其出现次数。由于是双层循环，这段代码在时间方面的消耗就是 n*n 的复杂度，也就是 O(n²)。
-在这里，我们给出一些经验性的结论：
-
-一个顺序结构的代码，时间复杂度是 O(1)。
-二分查找，或者更通用地说是采用分而治之的二分策略，时间复杂度都是 O(logn)。这个我们会在后续课程讲到。
-一个简单的 for 循环，时间复杂度是 O(n)。
-两个顺序执行的 for 循环，时间复杂度是 O(n)+O(n)=O(2n)，其实也是 O(n)。
-两个嵌套的 for 循环，时间复杂度是 O(n²)。
-
-有了这些基本的结论，再去分析代码的时间复杂度将会轻而易举。
-## 1.4 降低时间复杂度的必要性
-很多新手的工程师，对降低时间复杂度并没有那么强的意识。这主要是在学校或者实验室中，参加的课程作业或者科研项目，普遍都不是实时的、在线的工程环境。
-实际的在线环境中，用户的访问请求可以看作一个流式数据。假设这个数据流中，每个访问的平均时间间隔是 t。如果你的代码无法在 t 时间内处理完单次的访问请求，那么这个系统就会一波未平一波又起，最终被大量积压的任务给压垮。这就要求工程师必须通过优化代码、优化数据结构，来降低时间复杂度。
-为了更好理解，我们来看一些数据。假设某个计算任务需要处理 10万 条数据。你编写的代码：
-
-如果是 O(n²) 的时间复杂度，那么计算的次数就大概是 100 亿次左右。
-如果是 O(n)，那么计算的次数就是 10万 次左右。
-如果这个工程师再厉害一些，能在 O(log n) 的复杂度下完成任务，那么计算的次数就是 17 次左右（log 100000 = 16.61，计算机通常是二分法，这里的对数可以以 2 为底去估计）。
-
-数字是不是一下子变得很悬殊？通常在小数据集上，时间复杂度的降低在绝对处理时间上没有太多体现。但在当今的大数据环境下，时间复杂度的优化将会带来巨大的系统收益。而这是优秀工程师必须具备的工程开发基本意识。
-
-## 1.5 总结
-
-OK，今天的内容到这儿就结束了。相信你对复杂度的概念有了进一步的认识。
-复杂度通常包括时间复杂度和空间复杂度。在具体计算复杂度时需要注意以下几点。
-
-它与具体的常系数无关，O(n) 和 O(2n) 表示的是同样的复杂度。
-复杂度相加的时候，选择高者作为结果，也就是说 O(n²)+O(n) 和 O(n²) 表示的是同样的复杂度。
-O(1) 也是表示一个特殊复杂度，即任务与算例个数 n 无关。
-
-复杂度细分为时间复杂度和空间复杂度，其中时间复杂度与代码的结构设计高度相关；空间复杂度与代码中数据结构的选择高度相关。会计算一段代码的时间复杂度和空间复杂度，是工程师的基本功。这项技能你在实际工作中一定会用到，甚至在参加互联网公司面试的时候，也是面试中的必考内容。
-关于复杂度的评估，需要你深入理解本节课的知识点。最后，你工作中有遇到过关于计算复杂度的哪些实际问题吗？你又是如何解决的？欢迎你在留言区和我分享。
-
-# 2 数据结构
-
-## 2.1 代码对数据处理主要分为三个部分：增、删、查
-+ 找到要处理的数据。这就是按照某些条件进行**查找**。
- + 其中查找又分为按`索引值查找`、`按条件查找`
-+ 把结果存到一个新的内存空间中。这就是在现有数据上进行**新增**。
-+ 把结果存到一个已使用的内存空间中。这需要先**删除**内存空间中的已有数据，再新增新的数据。
-明白数据的三个操作，再做算法时可以对其优化，选择合理的数据结构。
-
-## 2.2 查找
-
-### 2.2.1 例一：找到数组中的第二个元素并输出
-
-对于数组，其中先根据索引值index查找到第二个数据元素再输出，如a[1]，此时时间复杂度为O(1)
-如果是链表，则依次从头结点遍历整个链表，此时时间复杂度为O(n)
-
-### 2.2.2 例二：根据数值条件查找，查找数组里为9的元素是否存在
-此时对于数组和链表都束手无措了，只能遍历整个数组或者链表进行查找，此时时间复杂度为O(n)。
-那么有没有更低的时间复杂度方式呢，就需要用到数据结构进行优化。采用把数组转换为字典，以保存元素及其出现次数的 k-v 映射关系。而在每次的循环中，都需要对当前遍历的元素，去查找它是否在字典中出现过。这里就是很实际的按照元素数值查找的例子。如果借助字典的数据类型，这个例子的查找问题，就可以在 O(1) 的时间复杂度内完成了。
-## 2.3 新增
-### 2.3.1 在复杂数据结构的最后新增
-
-此时需要查找该数据结构的最后位置，再赋值或插入一条数据即可
-比如数组和单链表，在最后新增不用移动数据，时间复杂度为O(1)
-
-### 2.3.2 在复杂数据结构的中间新增
-
-比如对长度为4的数组，在第二个元素中插入一个数据，则需要查找第二个数据，再新增数组，最后还需要移动原来第三第四的位置数据
-
-## 2.4 删除
-### （1）是在这个复杂数据结构的最后，删除一条数据
-### （2）是在这个复杂数据结构的中间某个位置，删除一条数据
-
-数据处理的基本操作只有 3 个，分别是`增`、`删`、`查`。其中，增和删又可以细分为在数据结构中间的增和删，以及在数据结构最后的增和删。区别就在于原数据的位置是否发生改变。查找又可以细分为按照位置条件的查找和按照数据数值特征的查找。几乎所有的数据处理，都是这些基本操作的组合和叠加。
-在实际的工作中，如果你不知道该用什么数据结构的时候，就一定要回归问题本源。从数据需要被处理的动作出发。只有明确了会有什么动作，才能找到最合适的解决方法。
-
-# 3 Java常用的数据结构
-
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+++ /dev/null
@@ -1,3 +0,0 @@
-# 本章节为MySQL进阶技术，以下为思维导图
-
-
\ No newline at end of file
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+++ /dev/null
@@ -1,2021 +0,0 @@
-# 本章节数据库技术按照导图展开，如下：
-
-
-
-
-
-Java的基本数据类型都有长度固定的数据位，不随运行平台的变化而变化
-
-引用类型都是**类**或**对象**实现的
-
-> 注意：Java不支持C/C++语言的指针类型、结构类型（struct）、联合类型（union）。在JDK5.0中提供对象对枚举类型的支持
-
-#### 2.2.1 值传递（基本数据类型的传递）
-
-`实参`传递给形参的是`值` `形参`和`实参`在内存上是两个独立的变量
-对形参做任何修改不会影响实参
-
-代码示例：
-
-```java
-public class Demo1 {
- public static void main(String[] args) {
- int b =20;
- change(b);// 实参 实际上的参数
- System.out.println(b);
- }
- public static void change(int a){//形参 形式上的参数
- a=100;
- }
-}
-```
-结果：20
-
-**为什么要用方法`static`关键字？**
-
-因为change(int a)创建了一个a内存空间，int
-b创建了一个b内存空间，但只是把b的值赋值给a,并没有改变a的值
-
-#### 2.2.2 引用传递(引用数据类型的传递)
-
-`实参`传递给`形参`的是参数对于堆内存上的`引用地址`
-
-`实参`和`形参`在内存上指向了同一块区域,对形参的修改会`影响`实参
-
-```java
-public class Demo2 {
- public static void main(String[] args) {
- int [] a={1,2,3};
- System.out.println(a[0]);
- change(a);
- System.out.println(a[0]);
- }
- public static void change(int[] a ){
- a[0]=100;
- }
-}
-```
-
-reason:由于引用传递，传递的是地址，方法改变的都是同一个地址中的值(类、数组、接口)
-
-
-##### 2.2.3 MMU地址变换
-
-##### 2.2.4 Java中private、protected、public和default的区别
-
-##### 2.2.5 多态
-
-##### 2.2.6 字段 abstract、final、static、this、super、null
-
-+ abstract
-
-abstract类必须被继承，abstract方法必须被重写。abstract类不能实例化，abstract方法只需声明不需实现。
-方法为abstract，其类必为abstract类（抽象类中可以没有抽象方法，但是抽象方法必须在抽象类中或者接口中）
-
-+ final
-
-final类不能被继承，且不能修改
-
-##
\ No newline at end of file
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+++ /dev/null
@@ -1,102 +0,0 @@
-* [session和cookies的区别是什么](#session和cookies的区别是什么)
- * [前言](#前言)
- * [什么是Cookie](#什么是Cookie)
- * [查看方法](#查看方法)
- * [什么是Session](#什么是Session)
- * [它们的区别--总结](#它们的区别总结)
-
-# 7.12 Session和Cookie的区别是什么
-## 前言
-
-当用户在浏览器输入一个网址时，会从服务端返回给用户一个页面或者信息。那么**Session**就是浏览器和服务器之间的一次对话，比如浏览器问候“你好吗”，服务端回答：“你好”。
-我们用浏览器打开一个网址，用的是**http协议**，而这种协议是**无状态**的，无状态就是这次请求和上次请求时无关联的，这种无状态的好处就在于能够快速访问。
-
-那么有一次场景就是当用户访问http://a.com/login.html时，用户进行登录。那当我访问http://a.com/index.html时，我们也希望它是登陆状态，但这两个页面是http协议，http协议是无状态的，是没有关联的。
-那我怎样获取登陆状态呢，一是每次登录用户时我都需要从数据库中去查找用户登录的状态并返回，但这种每次查询数据库是行不通的，会造成数据库的压力。正是这种诉求，cookie出现了，cookie是存在于浏览器端的，保存到数据库里。
-每次登录我只需在浏览器上查找是否登录过就行，但这种方式是不安全的。因为cookie存在于浏览器端，用户可以随时修改。所以session就出来了，放在服务端，相对安全。
-
-## 什么是Cookie
- `Cookie`意为“甜饼”，是由W3C组织提出，最早由Netscape社区发展的一种机制。目前Cookie已经成为标准，所有的主流浏览器如IE、Netscape、Firefox、Opera等都支持Cookie。
- 由于**HTTP**是一种**无状态**的协议，服务器单从网络连接上无从知道客户身份。怎么办呢？就给客户端们颁发一个通行证吧，每人一个，无论谁访问都必须携带自己通行证。这样服务器就能从通行证上确认客户身份了。这就是Cookie的工作原理。
- Cookie实际上是一小段的文本信息。客户端请求服务器，如果服务器需要记录该用户状态，就使用response向客户端浏览器颁发一个Cookie。客户端浏览器会把Cookie保存起来。当浏览器再请求该网站时，浏览器把请求的网址连同该Cookie一同提交给服务器。服务器检查该Cookie，以此来辨认用户状态。服务器还可以根据需要修改Cookie的内容。
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- 查看某个网站颁发的Cookie很简单。在浏览器地址栏输入`javascript:alert (document. cookie)`就可以了（需要有网才能查看）。
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-## 什么是Session
-
- **Session**是另一种记录客户状态的机制，不同的是Cookie保存在客户端浏览器中，而`Session保存在服务器`上。客户端浏览器访问服务器的时候，服务器把客户端信息以某种形式记录在服务器上,这就是Session。客户端浏览器再次访问时只需要从该Session中查找该客户的状态就可以了。
- **如果说Cookie机制是通过检查客户身上的“通行证”来确定客户身份的话，那么Session机制就是通过检查服务器上的“客户明细表”来确认客户身份**。Session相当于程序在服务器上建立的一份客户档案，客户来访的时候只需要查询客户档案表就可以了
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-## 查看方法
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-### 方法一
- 在浏览器的地址栏输入：`javascript:alert(document.cookie)` (不区分大小写)，就会弹出你在当前网页登录的cookie信息。输入时javascript会自动消失，所以需要输入1javascript:alert(document.cookie)，然后再删除1。
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-但这种方式我试过总是不行，不知道是哪里出现问题
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-### 方法二
- 按F12进入浏览器的开发者模式——console——在命令行输入javascript:alert(document.cookie)，再回车，就可以在浏览器端查看弹出的信息了！
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-
-
-### 方法三
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- 在Chrome中查看Cookie：点击url左边的文本图标， 单击cookie
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-
-
-## 它们的区别总结
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-+ 1.保存位置：
- session服务端，cookie客户端
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-+ 2.安全性：
- session相对安全，cookie相对不安全。
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-+ 3.存储类型：
- session能够存储任意的对象，cookie只能存储String类型的对象。
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-+ 4.大小限制：
- session没有大小限制，cookie有大小限制（4k）。
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-+ 5.个数限制：
- session没有个数限制，cookie个数限制（二十到几百个）。
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-+ 6.键值对：
- session是键值对嵌套键值对，cookie是键值对。
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-+ 7.用户禁用：
- session不能被用户禁用，cookie能被用户禁用。
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-+ 8.服务器压力：
- session压力大，cookie压力小。
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-+ 9.生命周期：session用户浏览器关闭，cookie可长期保存。
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-+ 10.区分路径：
- session不能区分路径,同一个用户在访问一个网站期间,所有的session在任何一个地方都可以访问到。而cookie中如果设置了路径参数,那么同一个网站中不同路径下的cookie互相是访问不到的.cookie只能是子路径访问父路径设置的cookie。
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-[推荐阅读:cookie和session的详解和区别](https://www.cnblogs.com/l199616j/p/11195667.html)
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-# 7.13 什么是索引回表，如何避免（索引覆盖）
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-## 什么是索引？
-索引其实可以理解为书中的目录，就像你小时候用新华字典查单词一样，通过首字母依次查找想要的字幕。索引在mysql里面也叫键（key）是存储引擎用于快速快速查找记录的一种数据结构。
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-索引的一个主要目的就是加快检索表中数据，亦即能协助信息搜索者尽快的找到符合限制条件的记录ID的辅助数据结构。
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-# 7.14 es用过冷热分离吗？假如现在有些数据热变冷，有些数据冷变热，怎么解决？
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-##
-热变冷：
-有x台机器tag设置为hot。
-有y台机器tag设置为cool。
-hot集群中只存最近两天的。
-有一个定时任务每天将前一天的索引标记为cool。
-es看到有新的标记就会将这个索引迁移到冷集群中, 这都是es自动完成的。
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-冷变热：
-缓存预热。
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-# 7.15 死锁与活锁的区别，死锁与饥饿的区别？
-