迭代解析JSON简单实例

由于项目中遇到了这个问题，所以在这里记录一下。

比如：请求到的JSON串：

 {
     "msg":"数据获取成功",
     "success":true,
     "data":[
         {
             "id":40,
             "name":"美术",
             "parentId":4,
             "photoUrl":"art@2x.png",
             "enable":1,
             "pos":2,
             "visitUrl":"sysPxbPage",
             "ord":0,
             "related":"1",
             "moduleType":"",
             "cateList":[
                 {
                     "id":155,
                     "moduleId":40,
                     "name":"雕塑",
                     "photoUrl":"sysPxbPage/artPage/ds@2x.png",
                     "enable":1,
                     "createTime":1508498216000
                 }
             ]
         },
         {
             "id":41,
             "name":"书法",
             "parentId":4,
             "photoUrl":"writing@2x.png",
             "enable":1,
             "pos":2,
             "visitUrl":"sysPxbPage",
             "ord":0,
             "related":"1",
             "moduleType":"",
             "cateList":[
                 {
                     "id":158,
                     "moduleId":41,
                     "name":"纂刻",
                     "photoUrl":"sysPxbPage/writingPage/zk@2x.png",
                     "enable":1,
                     "createTime":1508498326000
                 }
             ]
         }
 }

比如：获取photoUrl的值：

JSONObject da = resultJson.getJSONObject("data");

JSONArray d = da .JSONArray("cateList");

JSONObject ob = (JSONObject)d.get(0);    // 这里是得到第一个对象

String result = ob.getString("photoUrl");

若是获取success的值：

resultJson.getBooleanValue("success")；