JSONOBJ的反义符

JSONObject obj=new JSONObject();

obj.put("password", "123");

obj.put("test", "123222");

String a=obj.toString();

obj.put("params", a.substring(1,a.length()-1));

System.out.println(obj);

{"password":"123","test":"123222","params":"\"password\":\"123\",\"test\":\"123222\""}

在JSON里面再加入一次JSON就会自动转义