<resultMap type="com.example.demo.model.TuserModel" id="extendMapper">
 <id column="id" property="id" />
 <result column="user_name" property="userName" />
 <result column="nick_name" property="nickName" />
 <result column="avatar" property="avatar" />
 <result column="email" property="email" />
 <result column="signature" property="signature" />
 <result column="create_time" property="createTime" />
 <result column="update_time" property="updateTime" />
 <result column="del_flag" property="delFlag" />
 <collection property="tpluginModels" ofType="com.example.demo.model.TpluginModel"
 column="id">
 <id column="pid" property="id" />
 <result column="user_id" property="userId" />
 <result column="name" property="name" />
 <result column="icon" property="icon" />
 <result column="vsersion" property="vsersion" />
 <result column="tags" property="tags" />
 <result column="description" property="description" />
 <result column="bcreate_time" property="createTime" />
 <result column="bupdate_time" property="updateTime" />
 <result column="del_flag" property="delFlag" />
 </collection>
 <!-- <collection property="tpluginModels" column="id" ofType="com.example.demo.model.TpluginModel" 
 select="pluginByUid" /> -->

<select id="selectTuserBynameOrNick" resultMap="extendMapper"> select
 u.*,p.id as pid,p.user_id,p.name,p.icon,p.vsersion,p.tags,p.description,p.create_time
 as bcreate_time,p.update_time as bupdate_time,p.del_flag from t_user u
 LEFT
 JOIN t_plugin p ON u.id=p.user_id and u.del_flag=0 and
 p.del_flag=0 WHERE
 u.user_name LIKE CONCAT('%',#{name},'%') OR
 u.nick_name LIKE
 CONCAT('%',#{name},'%')
 </select>

<?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.sea.crm.mapper.OrderMapper">

 <!-- 使用as 給列取別名解決類名和屬性名不一致的情況 -->
 <!--<select id="queryAll" resultType="Order"> SELECT id,user_id as userId,number,createtime,note 
 FROM orders </select> -->
 <!-- 使用resultMap解決列名和屬性名不一致的情況 -->
 <!-- 配置一個resultMap映射列和屬性 -->
 <resultMap type="Order" id="orderMap">
 <!-- id：設(shè)置ResultMap的id -->
 <!-- 定義主鍵 ,非常重要。如果是多個字段,則定義多個id -->
 <!-- property：主鍵在pojo中的屬性名 -->
 <!-- column：主鍵在數(shù)據(jù)庫中的列名 -->
 <id column="id" property="id" />
 <!-- 映射其他普通列 -->
 <result column="user_id" property="userId" />
 <result property="number" column="number" />
 <result property="createtime" column="createtime" />
</resultMap>
 <!-- 方法的返回值可以使用 -->
 <select id="queryAll" resultMap="orderMap">
 SELECT id,user_id ,number,createtime,note FROM orders
 </select>
</mapper>

public class OrderMapperTest {
 
 SqlSessionFactory factory = null;
 private OrderMapper orderMapper = null;

 @Before
 public void testInit() {
  // 1. 創(chuàng)建SqlSessionFactoryBuilder對象
  SqlSessionFactoryBuilder builder = new SqlSessionFactoryBuilder();
  // 2. 加載SqlMapConfig.xml配置文件
  // /20181013_mybatis/config/SqlMapConfig.xml
  InputStream in = MyBatisTest.class.getResourceAsStream("/SqlMapConfig.xml");
  // 3. 創(chuàng)建SqlSessionFactory對象
  factory = builder.build(in);

 }
    @Test
 public void testqueryAll() {
  SqlSession session = factory.openSession();
  OrderMapper orderMapper = session.getMapper(OrderMapper.class);
  List<Order> orders = orderMapper.queryAll();
  System.out.println(orders);
 }
 }