mybatis change 7

mybatis_train/src/main/java/com/mapper/SqlMapper.java

@@ -0,0 +1,15 @@
+package com.mapper;
+
+import com.pojo.entity.UserEntity;
+import org.apache.ibatis.annotations.Param;
+
+import java.util.List;
+
+public interface SqlMapper {
+    // 模糊查询
+    List<UserEntity> getUserByLike(@Param("name") String name);
+    List<UserEntity> getUserByList(@Param("ids") List<Integer> ids);
+    List<UserEntity> getUserByTableName(@Param("tableName") String tab);
+    int insertGeneratedKey(UserEntity userEntity);
+
+}

mybatis_train/src/main/resources/com/mapper/SqlMapper.xml

@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE mapper
+        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
+        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
+<mapper namespace="com.mapper.SqlMapper">
+<!--    sql语句抽取-->
+    <select id="getUserByLike" resultType="com.pojo.entity.UserEntity">
+        <!--       select *  from user where name like '%${name}%'
+                select *  from user where name like  concat('%',#{name},'%') -->
+                select *  from user where name like "%"#{name}"%"
+    </select>
+    <select id="getUserByList" resultType="com.pojo.entity.UserEntity">
+        select *  from user where id in (#{ids})
+    </select>
+    <select id="getUserByTableName" resultType="com.pojo.entity.UserEntity">
+        <!-- 动态设置表名只能用$符号 -->
+        select *  from  ${tableName}
+    </select>
+    <!--
+        useGeneratedKeys 设置当前标签中sql使用了自增的主键
+        keyProperty 将自增主键的值赋值给映射文件中参数的某个属性值
+     -->
+    <insert id="insertGeneratedKey"
+            useGeneratedKeys="true"
+            keyProperty="age"
+            parameterType="com.pojo.entity.UserEntity">
+        insert into user(name,age,address) value(#{name},#{age},#{address})
+    </insert>
+</mapper>

mybatis_train/src/main/resources/mybatisConfig.xml

@@ -36,6 +36,7 @@
         <mapper class="com.mapper.AccountMapper"></mapper>
         <mapper class="com.mapper.UserMapper"></mapper>
         <mapper class="com.mapper.DepartmentMapper"></mapper>
+        <mapper class="com.mapper.SqlMapper"></mapper>
 <!--        <package name="com.mapper"/>-->
     </mappers>
 

mybatis_train/src/test/java/TestSqlMapper.java

@@ -0,0 +1,57 @@
+import com.mapper.SqlMapper;
+import com.mapper.UserMapper;
+import com.pojo.entity.UserEntity;
+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;
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+public class TestSqlMapper {
+    SqlMapper sqlMapper;
+    @Before
+    public void before() throws IOException {
+        InputStream resourceAsStream = Resources.getResourceAsStream("mybatisConfig.xml");
+        SqlSessionFactory build = new SqlSessionFactoryBuilder().build(resourceAsStream);
+        SqlSession sqlSession = build.openSession(true);
+        sqlMapper = sqlSession.getMapper(SqlMapper.class);
+    }
+
+    /**
+     * 模糊查询
+     */
+    @Test
+    public void testLike() {
+        List<UserEntity> na = sqlMapper.getUserByLike("na");
+    }
+    @Test
+    public void testList() {
+        List<Integer> integers = Arrays.asList(1, 2);
+        List<UserEntity> na = sqlMapper.getUserByList(integers);
+    }
+    @Test
+    public void testTableName() {
+        List<UserEntity> na = sqlMapper.getUserByTableName("user");
+    }
+
+    /**
+     * 插入获取自增主键
+     */
+    @Test
+    public void addUserGeneratedKey() {
+        UserEntity userEntity = new UserEntity();
+        userEntity.setName("张贤胜");
+        userEntity.setAge(27);
+        userEntity.setAddress("地址");
+        int i = sqlMapper.insertGeneratedKey(userEntity);
+
+    }
+}