map格式和string格式转化为json格式

转化为json

Map<String, Object> data;

JSONObject dataJson = new JSONObject(data);//map转化为json

String cano= (“CarNO”);

转化为json

eg1

String results= (params,type);

(“*********results:”+results);
JSONObject dataJson = new JSONObject();//注意这里的JSONObject为

/* dataJson = new ();*/

JSONObject er= (JSONObject) (results);//String转化为json
success= ((“success”).toString()) ;

eg2

String results = (());
JsonObject json=new JsonParser().parse(results).getAsJsonObject();
int resultCode=(“resultCode”).getAsInt();
(“querypersonsbycar-SUCCESS:获取人员卡信息成功没有信息时的数据! 信息如下：”+json);
if(resultCode==0){
JsonElement dataItems=(“dataItems”);

转为Map,Map转为json:

results = (orderno, “Weixin”, null, “蜜服务测试”, 1, null, null, 1, null, null, null,
“测试”, null, “691152”, “”, “”, null, “wxc992e3bd110b5b87”, openid);

Map mihelpmap = (results);//String转Map

dataJson = new (mihelpmap );//map转json

①//String转map

import ;

String str=“”;

HashMap hashMap = (str, );

②

map转string

String paramMap= (map);

③

JSONObject jsont=(paramMap);