MyBatis实现万能Map和模糊查询

package com.hpf.bean;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
//编写实体类User
@Data
@AllArgsConstructor
@NoArgsConstructor
public class User {
    private Long id;
    private String username;
    private String password;
}

<insert id="addUser" parameterType="com.hpf.bean.User">
        insert into userinfo (id,username,password) values (#{id},#{username},#{password})
</insert>

 <insert id="addUserByMap" parameterType="Map">
        insert into userinfo (id,username,password) values (#{id},#{user},#{pwd})
</insert>

 @Test
    public void testAddUserByMap(){
        SqlSession sqlSession = MyBatisUtils.getSqlSession();
        UserDao mapper = sqlSession.getMapper(UserDao.class);
        Map<String,Object> map = new HashMap<>();
        map.put("id", 6L);
        map.put("user", "张三");
        map.put("pwd", "666");
        int res = mapper.addUserByMap(map);
        sqlSession.commit();
        sqlSession.close();
    }

package com.hpf.dao;

import com.hpf.bean.User;
import java.util.List;
import java.util.Map;
//这个接口实现的是对于用户的相关操作
public interface UserDao {
    //模糊查询用户信息
    List<User> getUserByLike(Map map);
}

 <select id="getUserByLike" parameterType="Map" resultType="com.hpf.bean.User">
        select * from userinfo where username like #{value}
 </select>

@Test
    public void testGetUserByLike(){
        SqlSession sqlSession = MyBatisUtils.getSqlSession();
        UserDao mapper = sqlSession.getMapper(UserDao.class);
        Map<String,Object> map = new HashMap<>();
        map.put("value", "李%");
        List<User> userByLike = mapper.getUserByLike(map);
        for(User user:userByLike)
            System.out.println(user);
    }

<select id="getUserByLike" parameterType="Map" resultType="com.hpf.bean.User">
        select * from userinfo where username like #{value}"%"
</select>