问题描述

$.getJSON获取一组数据

从后台传回的json数据为{"cpu":[100],"mem":[10]}{"cpu":[110],"mem":[11]}{"cpu":[120],"mem":[12]}{"cpu":[130],"mem":[13]}。怎么利用getJSON的方法获得数据，单个{"cpu":[100],"mem":[10]}这样的数据可以获得，但是一组的却不行。我在百度知道上问过，但是没人回答http://zhidao.baidu.com/question/392661669009639965.html。菜鸟哈，劳烦各位看看

解决方案

 public static void main(String[] args) {
        JSONArray jsret = new JSONArray();
         PrintWriter out = response.getWriter();
        for (int i = 10; i <= 13; i++) {
            JSONArray jsonArray2 = JSONArray.fromObject(i*10);
            JSONArray jsonArray3 = JSONArray.fromObject((i));
            JSONObject jb = new JSONObject();
            jb.put("cpu", jsonArray2);
            jb.put("mem", jsonArray3);
            jsret.add(jb);
        }
        out.write(jsret.toString());
                out.flush();
    }
    如果没问题，记得顺手采纳一下

解决方案二：

 {"cpu":[100],"mem":[10]}{"cpu":[110],"mem":[11]}{"cpu":[120],"mem":[12]}{"cpu":[130],"mem":[13]}
 格式不对，
 后台格式变一下
[ {"cpu":[100],"mem":[10]},{"cpu":[110],"mem":[11]},{"cpu":[120],"mem":[12]},{"cpu":[130],"mem":[13]}]

解决方案三：

我的后台代码如下：

 for (int i = 10; i <= 13; i++) {
                PrintWriter out = response.getWriter();
                JSONArray jsonArray2 = JSONArray.fromObject(i*10);
                JSONArray jsonArray3 = JSONArray.fromObject((i));
                JSONObject jb = new JSONObject();
                jb.put("cpu", jsonArray2);
                jb.put("mem", jsonArray3);
                out.write(jb.toString());
                out.flush();
            }

请问要怎么在最外框加上方括号呢？

解决方案四：

你可以这么写

  for (int i = 10; i <= 13; i++) {
            PrintWriter out = response.getWriter();
            JSONArray jsonArray2 = JSONArray.fromObject(i*10);
            JSONArray jsonArray3 = JSONArray.fromObject((i));
            JSONObject jb = new JSONObject();
            jb.put("cpu", jsonArray2);
            jb.put("mem", jsonArray3);
            out.write(jb.toString());
            out.flush();PrintWriter out = response.getWriter();
            JSONArray jsonArray2 = JSONArray.fromObject(i*10);
            JSONArray jsonArray3 = JSONArray.fromObject((i));
            JSONObject jb = new JSONObject();
            jb.put("cpu", jsonArray2);
            jb.put("mem", jsonArray3);
    }
    out.write(jb.toString());
    out.flush();

输出格式为：
{"cpu":[100,110,120,130],"mem":[10,11,12,14]}