将空白Json数组转换为空白json对象

Question

我的Json对象：

 "feedback_details":{
"id":"80",
"lead_id":"86075",
"account_id":"1543",
"document_id":"582348",
"reason_id":"4",
"description":"COAPPL_profile1.jpg",
"sales_remark":null,
"lat":"",
"long":"",
"status":"2",
"created_at":"2018-02-27 12:29:59",
"updated_at":"2018-02-27 12:29:59"
}

当我在feedback_details中没有细节时，它会出现一个空的json数组，如下所示：

"feedback_details":[
]

所以我尝试将其强制转换为空白的json对象：

for (int i = 0; i < jsonArray.length(); i++) {
                JSONObject object = jsonArray.getJSONObject(i);

            for (int j = 0; j < object.getJSONArray("applicantPhoto").length(); j++) {
                object.getJSONArray("applicantPhoto").getJSONObject(j);
                if (object.getJSONArray("applicantPhoto").getJSONObject(j).optJSONObject("feedback_details") == null) {
                    new JSONObject(object.getJSONArray("applicantPhoto").getJSONObject(j).getString("feedback_details"));
                }
                if (object.getJSONArray("applicantSignatire").getJSONObject(j).optJSONObject("feedback_details") == null) {
                    String newstring = object.getJSONArray("applicantSignatire").getJSONObject(j).getJSONArray("feedback_details").toString();
                    //here i get the exception for type mismatch where the string is "[]"
                    new JSONObject(newstring);
                }
                if (object.getJSONArray("applicantPhoto").getJSONObject(j).optJSONObject("feedback_details") == null) {
                    new JSONObject(String.valueOf(object.getJSONArray("applicantPhoto").getJSONObject(j).getJSONArray("feedback_details")));
                }
            }
            Utility.printMessage("Json object..." + object);

我知道字符串是“[]”，因此它显示异常，因为无法转换为JsonObject。任何人都可以建议如何处理这个，基本上我需要一个空对象而不是那个空白数组。

Answer 1

    String data = "Your Response data"; 
Object json = new JSONTokener(data).nextValue();
if (json instanceof JSONObject)
  //you have an object
else if (json instance of JSONArray)
  //you have an array

另外，请查看以下链接了解详情Determine whether JSON is a JSONObject or JSONArray

Answer 2

请检查以下代码

if(!object.getJSONArray("applicantPhoto").getJSONObject(j).isNull("feedback_details")) {
        if (object.getJSONArray("applicantPhoto").getJSONObject(j).getJSONObject("feedback_details").toString().length() > 2) {
            for (int i = 0; i < object.getJSONArray("applicantPhoto").getJSONObject(j).getJSONObject("feedback_details").length(); i++) {
                JSONObject jsonObject1 = object.getJSONArray("applicantPhoto").getJSONObject(j).getJSONObject("feedback_details").getJSONObject(i);
                //Get the Values of Feedback_details Key
            }
        } else {
            //Feedback_detail key is empty
        }
    } else {
        //Key is null or Array is empty
    }