微信json对象 转换为json字符串传参给后端，后端解析

普通js通常这样转换
 
//这是一个json对象
var jsonobj = {"sztno":"330890811","transTime":"2018-5-7 08:00:36","amt":"50"};
//json对象转成json字符串
var jsonstr = JSON.stringify(jsonobj)
console.log("jsonstr=="+jsonstr)
//打印结果:"jsonstr=={"sztno":"330890811","transTime":"2018-5-7 08:00:36","amt":"50"}"
 
//由json字符串转成json对象
var obj1 = eval（'(' + jsonstr + ')');
var obj2 = JSON.parse(jsonstr); 
console.log("json obj1=="+JSON.stringify(obj1))
//打印结果:"obj1=={"sztno":"330890811","transTime":"2018-5-7 08:00:36","amt":"50"}"
console.log("json obj2=="+JSON.stringify(obj2))
//打印结果:"obj2=={"sztno":"330890811","transTime":"2018-5-7 08:00:36","amt":"50"}"
 
微信小程序
 
//这是一个json对象
var jsonobj = {"sztno":"330890811","transTime":"2018-5-7 08:00:36","amt":"50"};
//json对象转成json字符串（同普通js中相同）
var jsonstr = JSON.stringify(jsonobj)
console.log("jsonstr=="+jsonstr)
//打印结果:"jsonstr=={"sztno":"330890811","transTime":"2018-5-7 08:00:36","amt":"50"}"
 
//由json字符串转成json对象，eval（)函数在小程序用不了，被小程序禁用了
var obj1 = JSON.parse(jsonstr); //可用此方法来转换
console.log("json obj1=="+JSON.stringify(obj1))
//打印结果:"obj1=={"sztno":"330890811","transTime":"2018-5-7 08:00:36","amt":"50"}"

后端

JSONObject nameObject = JSONObject.fromObject(name);