提交

README.md

@@ -44,7 +44,7 @@
 
 ###  以下所有内容都已完成，但是因内容多需逐渐整理上传！ 专题的部分也会尽快上传更新！ 立个flag 半年内吧争取全部更新完！各位稍安勿躁！ 
 
-###  [如要提交代码请先看--提交合并代码规范](/docs/code-criterion.md)
+###  [如要提交代码请先看--提交合并代码规范提交者的后面都会有署名方面大家问问题](/docs/code-criterion.md)
 
 | ID | Problem  | Article | 
 | --- | ---   | :--- |
@@ -101,9 +101,6 @@
 #### Get Start
 
    下载项目, 切换的项目根目录
-   
-   
-    
    ```bash
    Linux/Mac:
    
@@ -116,7 +113,6 @@
    ```
     运行以上命令相关依赖便会安装完毕
     启动GeekQMainApplication主类即可
-    
    若有对于./mvnw 不了解的请点击下方链接介绍
-###### [maven-wrapper介绍](/docs/maven-wrapper.md)
+###### [maven-wrapper介绍(add by zhangkai)](/docs/maven-wrapper.md)
 

docs/mybatis-code.md

@@ -88,4 +88,10 @@
 ### generatorConfig.xml 内容解析?
     已在其中备注,详细内容请见generatorConfig.xml
 
-### generatorConfig.xml 内容解析?
\ No newline at end of file
+### xml映射文件都会有一个dao接口，工作原理？
+   
+      Dao接口里的方法，是不能重载的，因为是全限名+方法名的保存和寻找策略。      
+      Dao接口的工作原理是JDK动态代理，Mybatis运行时会使用JDK动态代理为Dao接口生成代理proxy对象，
+      代理对象proxy会拦截接口方法，转而执行MappedStatement所代表的sql，然后将sql执行结果返回。
+
+### 
\ No newline at end of file

src/main/java/com/geekq/miaosha/mybatis/Mapper/UserMapper.java

@@ -2,6 +2,7 @@ package com.geekq.miaosha.mybatis.Mapper;
 
 
 import com.geekq.miaosha.mybatis.entity.User;
+import com.geekq.miaosha.mybatis.vo.TeacherListVo;
 import com.geekq.miaosha.mybatis.vo.TeacherVo;
 import org.apache.ibatis.annotations.Mapper;
 import org.apache.ibatis.annotations.Param;
@@ -41,4 +42,6 @@ public interface UserMapper {
 
     public List<TeacherVo> getTeacherAndUserList( @Param("uId") List<Integer> uId );
 
+    public List<TeacherListVo> getTeacherAndUserListVo(@Param("uId") Integer uId );
+
 }

src/main/java/com/geekq/miaosha/mybatis/controller/UbatisController.java

@@ -3,6 +3,7 @@ package com.geekq.miaosha.mybatis.controller;
 import com.geekq.miaosha.access.AccessLimit;
 import com.geekq.miaosha.mybatis.Mapper.UserMapper;
 import com.geekq.miaosha.mybatis.entity.User;
+import com.geekq.miaosha.mybatis.vo.TeacherListVo;
 import com.geekq.miaosha.mybatis.vo.TeacherVo;
 import com.geekq.miaosha.redis.KeyPrefix;
 import com.geekq.miaosha.redis.RedisService;
@@ -98,7 +99,18 @@ public class UbatisController {
 
         list.add(1);
         list.add(2);
-        List<TeacherVo> teacherAndUser =  userMapper.getTeacherAndUserList(list );
+        List<TeacherVo> teacherAndUser =  userMapper.getTeacherAndUserList(list);
         System.out.println(teacherAndUser.size());
     }
+
+    /**
+     * 测试多表联合查询  in
+     */
+    @RequestMapping(value = "/testAssc", produces = "text/html")
+    @ResponseBody
+    public void testAssc(){
+
+        List<TeacherListVo> teacherAndUser =  userMapper.getTeacherAndUserListVo(1 );
+        System.out.println(teacherAndUser.toString());
+    }
 }

src/main/java/com/geekq/miaosha/mybatis/vo/TeacherListVo.java

+package com.geekq.miaosha.mybatis.vo;
+
+import com.geekq.miaosha.mybatis.entity.User;
+import lombok.Getter;
+import lombok.Setter;
+
+import java.io.Serializable;
+import java.util.List;
+
+@Setter
+@Getter
+public class TeacherListVo implements Serializable {
+
+
+    private String tId ;
+
+    private Integer uId ;
+
+    private String tName ;
+
+    private User userList;
+
+    @Override
+    public String toString() {
+        return "TeacherListVo{" +
+                "tId='" + tId + '\'' +
+                ", uId=" + uId +
+                ", tName='" + tName + '\'' +
+                ", userList=" + userList +
+                '}';
+    }
+}

src/main/resources/application.properties

@@ -23,12 +23,12 @@ log4j.logger.java.sql.PreparedStatement=DEBUG
 #mybatis
 mybatis.type-aliases-package=com.geekq.miaosha.domain
 #开启驼峰转换 configuration config-location 不能同時存在 如果要走流程 请 放开注释
-mybatis.configuration.map-underscore-to-camel-case=true
+#mybatis.configuration.map-underscore-to-camel-case=true
 #mybatis.mapperLocations = classpath:com/geekq/miaosha/dao/*.xml
 
 mybatis.mapperLocations=classpath:mybatis/mapper/*.xml
 #配置xml方式 因为与 mybatis.configuration.map-underscore-to-camel-case 仅用于测试
-#mybatis.config-location=classpath:mybatis/mybatis-config.xml
+mybatis.config-location=classpath:mybatis/mybatis-config.xml
 
 #add mybatis
 mybatis.

src/main/resources/mybatis/mapper/userMapper.xml

@@ -32,7 +32,7 @@ userMapper(userMapper.xml文件去除后缀)保证唯一性
     </resultMap>
 
 
-    <resultMap type="com.geekq.miaosha.mybatis.vo.TeacherVo" id="TandUResultMap">
+    <resultMap type="com.geekq.miaosha.mybatis.vo.TeacherListVo" id="TandUResultMap">
         <!-- id表示查询结果集中唯一标识
         column:查询出的列名
         property:type所指定的POJO中的属性名
@@ -42,9 +42,12 @@ userMapper(userMapper.xml文件去除后缀)保证唯一性
         <!-- 对普通列的映射定义 -->
         <result column="t_id" property="tId"/>
         <result column="t_name" property="tName"/>
-        <result column="name" property="name"/>
-        <result column="age" property="age"/>
-        <result column="_address" property="address"/>
+
+            <!--property="supervisor"表明这是为了映射学生实体的
+    supervisor属性。javaType="Teacher"用到了Teacher这个
+    别名定义，并指出了supervisor属性的java类型-->
+        <association property="userList"  javaType="com.geekq.miaosha.mybatis.entity.User" column="u_id" select="com.geekq.miaosha.mybatis.Mapper.getUser" >
+        </association>
     </resultMap>
 
     <sql id="base_column">
@@ -95,6 +98,10 @@ userMapper(userMapper.xml文件去除后缀)保证唯一性
 
     </select>
 
+    <select id="getTeacherAndUserListVo" resultMap="TandUResultMap">
+        select * from teacher t where t.u_id = #{uId}
+    </select>
+
     <!-- 插入自动递增-->
     <insert id="insert" parameterType="com.geekq.miaosha.mybatis.entity.User"
             useGeneratedKeys="true" keyProperty="id">