1.代码

    @Autowired
    private     SqlSessionFactoryBean  sqlSessionFactory  ;
    @RequestMapping(value = "f3")
    public String f3( @RequestBody Map<String,String>  map,HttpServletRequest request, HttpServletResponse response) throws Exception {
        SqlSessionFactory object = sqlSessionFactory.getObject();
        SqlSession session = null;
        try {
            session = object.openSession();
            Object selectOne = session.selectOne("test.get2", map);
             MappedStatement mappedStatement = session.getConfiguration().getMappedStatement("test.get2");
            String jsonString = JsonMapper.toJsonString(selectOne);
            System.out.println(11);
        } finally {
            session.close();
        }
        return "f1";
    }

<mapper namespace="test">
    <select id="get1" resultType="TestData">
        SELECT 
             *
        FROM test_data a
        WHERE a.id = #{id}
    </select>
    
        <select id="get2" resultType="map">
        SELECT 
            *
        FROM test_data a
        WHERE a.id = #{id}
    </select>
</mapper>

2.前台

$.ajax({
                    url :'${ctx}/test/testData/f3?book=java',
                    type: 'post',
                    dataType : "json",
                    contentType:'application/json;charset=UTF-8',//关键是要加上这行
                    data : JSON.stringify( {id:'22',remarks:'aaa'}),
                    async : false, // 同步请求
                    success : function(data) {
                         debugger ;
                    }
                });

3,转成json   ,在数据库就转成 json

        
        SELECT 
            id,user_id, date_format(create_date,'%Y-%m-%d') as cdate
        FROM test_data a
        WHERE a.id = #{id}
    

4, 数据对比

 

        a.id AS "id",
        a.user_id AS "user.id",
        a.office_id AS "office.id",
        a.area_id AS "area.id",
        a.name AS "name",
        a.sex AS "sex",
        a.in_date AS "inDate",
        a.create_by AS "createBy.id",
         date_format(create_date,'%Y-%m-%d')  AS "createDate",
        a.update_by AS "updateBy.id",
        date_format(update_date,'%Y-%m-%d') AS "updateDate",
        a.remarks AS "remarks",
        testint,
        a.del_flag AS "delFlag"

上面可以重新 封装成map