详解Mybatis中的CRUD

//根据id查询用户
  User getUserById(int id);

<select id="getUserById" parameterType="int" resultType="com.kuang.pojo.User">
    select * from mybatis.user where id = #{id}
</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();
  }

<!--对象中的属性，可以直接取出来-->
<insert id="addUser" parameterType="com.kuang.pojo.User">
  insert into mybatis.user (id,name,pwd) values (#{id},#{name},#{pwd});
</insert>

<update id="updateUser" parameterType="com.kuang.pojo.User">
  update mybatis.user set name = #{name},pwd=#{pwd} where id = #{id};
</update>

<delete id="deleteUser" parameterType="int">
  delete from mybatis.user where id = #{id};
</delete>