万能的Map

假设，我们的实体类，或者数据库中的表，字段或者参数过多，我们应当考虑使用Map

//万能的Map
    int addUser2(Map<String,Object> map);

<!--对象中的属性可以直接取出来-->
    <insert id="addUser2" parameterType="map">
        insert into mybatis.user(id ,name, pwd) values(#{userid},#{userName},#{passWord});
    </insert>

@Test
    public void addUser2(){
        SqlSession sqlSession = MybatisUtils.getSqlSession();

        UserMapper mapper = sqlSession.getMapper(UserMapper.class);

        Map<String,Object> map = new HashMap<>();
        map.put("userid",5);
        map.put("userName","Hello");
        map.put("passWord","222333");

        mapper.addUser2(map);
        sqlSession.commit();
        sqlSession.close();
    }

模糊查询怎么写

java代码执行的时候，传递通配符% %

  List<User> getUserLike(String value);

 <select id="getUserLike" resultType="com.kuang.pojo.User">
        select * from user where name like #{value}
    </select>

@Test
    public void getUserLike(){
        SqlSession sqlSession = MybatisUtils.getSqlSession();
        UserMapper mapper = sqlSession.getMapper(UserMapper.class);
        List<User> userList =  mapper.getUserLike("李%");
        for (User user:userList) {
            System.out.println(user);
        }
        sqlSession.close();
    }

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