map集合转为JSON字符串

mybatis查询返回的map集合转换为JSON，并在外面嵌套相关节点
之前有尝试过用JSONObject.put字符串方法将额外\字符添加到jsON字符串
jsonobject.put(“message”, map);但是最后输出的值却不是想要的JSON字符串，会多出一些转义符，类似下面这种结构：

json object = {"details":"{\"products\":[{\"pid\":\"14\",\"name\":\"zxc\",\"price\":\"123456\"},{\"pid\":\"6\",\"name\":\"Sony Xperia\",\"price\":\"35000\"},{\"pid\":\"8\",\"name\":\"Samsung Galaxy Note\",\"price\":\"32000\"},{\"pid\":\"5\",\"name\":\"htc\",\"price\":\"26326\"},{\"pid\":\"9\",\"name\":\"Nokia Lumia 800\",\"price\":\"18000\"},{\"pid\":\"2\",\"name\":\"iphone\",\"price\":\"12345\"},{\"pid\":\"15\",\"name\":\"sdjnas\",\"price\":\"12243\"},{\"pid\":\"13\",\"name\":\"Samsung S5222\",\"price\":\"6500\"},{\"pid\":\"11\",\"name\":\"Nokia C201\",\"price\":\"4400\"},{\"pid\":\"7\",\"name\":\"Nokia Asha 200\",\"price\":\"4000\"},{\"pid\":\"1\",\"name\":\"htc\",\"price\":\"1234\"},{\"pid\":\"3\",\"name\":\"htc\",\"price\":\"1234\"},{\"pid\":\"4\",\"name\":\"htc\",\"price\":\"1234\"},{\"pid\":\"10\",\"name\":\"aks\",\"price\":\"1234\"},{\"pid\":\"12\",\"name\":\"asd\",\"price\":\"123\"}],\"success\":1}\n"}

测来测去还是直接用fastjson中的JSON.toJSONString()方法最简单直接，将查出来的集合放入map中，再通过fastjson转换，输出的json格式简单明了不容易出错，示例如下：
所需依赖：fastjson*

    com.cdxt.his    fastjson    1.2.83 

  import com.alibaba.fastjson.JSON;       public static  String  getSuccessResp(HashMap map){        HashMap map1=new HashMap<>();        HashMap map2=new HashMap<>();        map1.put("data",map);        map1.put("code","1");        map1.put("message","成功");        map2.put("response",map1);        String resultStr= JSON.toJSONString(map2);        return resultStr;    }

{"response": {"message": "成功","data": {"item": [{"patient_name": "陆心莲","visit_doctor_name": "张蓉","reg_time": "2020-01-01 14:08:30","reg_level_code": "41ab76501300ee8c69de","reGISter_code": "5fc805cd6e78808132f8","reg_level_name": "副主任医师挂号费","reg_fee": 11,"visit_doctor_code": "10047","reg_state": "1","visit_dept_code": "f48f97b5035b80810094","visit_time": "2020-01-01 14:25:41"}, {"patient_name": "陆心莲","visit_doctor_name": "罗蓉","reg_time": "2020-01-02 15:39:46","reg_level_code": "ddce766e430380816ffc","register_code": "6546e166396d808169db","reg_level_name": "普通门诊挂号费（主治医师）","reg_fee": 9,"visit_doctor_code": "10194","reg_state": "1","visit_dept_code": "f48f97b5035b80810094","visit_time": "2020-01-02 16:02:21"}, {"patient_name": "陆心莲","visit_doctor_name": "罗蓉","reg_time": "2020-01-16 10:03:32","reg_level_code": "ddce766e430380816ffc","register_code": "ac1d0b451f9580815150","reg_level_name": "普通门诊挂号费（主治医师）","reg_fee": 9,"visit_doctor_code": "10194","reg_state": "1","visit_dept_code": "f48f97b5035b80810094","visit_time": "2020-01-16 10:09:42"}]},"code": "1"}}

学习记录，仅供参考，谢谢。。。。

来源地址：https://blog.csdn.net/weixin_49408113/article/details/128871067