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JSON对象在前端、后端之间的交互转换

先从前端传回JSON对象：

定义JSON对象

var jsonObj={
                           flightDate:actObj.fly_date,
                           flightNo:actObj.fly_no,
                           departCode:actObj.depart_code,
                           arriveCode:actObj.arrive_code
                       };

传JSON对象

$.ajax({
                   type:"get",
                   url:'server1/delay/flightDynamic.action',
                   dataType:"text",
                   data:{
                   "jsonObj":jsonObj,         
                   }
})

后台接收处理JSON对象：

接收JSON对象（为字符串）

HttpServletRequest request = ServletActionContext.getRequest();
String m = request.getParameter("jsonObj");

JSON字符串转换为JSON对象

JSONObject res = JSONObject.parseObject(m);

JSON对象转换为Java对象

FlightDynamicQueryDao q = (FlightDynamicQueryDao) JSONObject.toJavaObject(res, FlightDynamicQueryDao.class);

Java对象转换为JSON对象

JSONObject r = (JSONObject) JSONObject.toJSON(flightDynamicDao);

总代码

HttpServletRequest request = ServletActionContext.getRequest();
String m = request.getParameter("jsonObj");
JSONObject res = JSONObject.parseObject(m);
FlightDynamicQueryDao q = (FlightDynamicQueryDao) JSONObject.toJavaObject(res, FlightDynamicQueryDao.class);
FlightDynamicDao flightDynamicDao = flightDynamicService.getDynamic(q);
JSONObject r = (JSONObject) JSONObject.toJSON(flightDynamicDao);
System.out.println(r);
outputString(r.toJSONString());