com.alibaba.fastjson.JSONObject jso  = null;
     try {
         jso = JSON.parseObject(result);//json字串轉換成jsonobject物件
JSONArray objects = jso.getJSONArray("data");//jsonobject物件取得some對應的jsonarray陣列
for (int i = 0; i < objects.size(); i++) {
             String str = (String) objects.get(i);
         }

} catch (Exception e) {
    e.printStackTrace();
}

json模型:

{
    "appId": "",
    "count": "0",
    "currentPageNum": "20",
    "data": [],
    "ext": {
        "sysdate": "2017-10-11 14:12:59"
    },
    "id": "",
    "numPerPage": "20",
    "object": {
        "offlineCouponCount": "0",
        "onlineCouponCount": "0",
        "platformCouponCount": "0"
    },
    "pageNum": "1",
    "retCode": "000",
    "retDesc": "",
    "rtn": true,
    "rtnMsg": "操作成功",
    "sequenceName": "",
    "serNo": "",
    "terminal": "",
    "totalCount": "0",
    "totalPage": "0",
    "version": "1.01"
}