Android 解析时出现异常 JSON URL

Question

我正在尝试解析来自 URL 的 JSON 响应并将其填充到数组中。尝试解析我的 json 响应 URL:

时出现此异常

org.json.JSONException: Value <!DOCTYPE of type java.lang.String cannot be converted to JSONArray

这是我的回复：

{"firstName":"Roger","lastName":"Davis","email":"rog@gmail.com","password":"test123","profilePicture":"googleimagesblablabla","settings":[]}

我的代码：

            URL url = new URL(myurl);
            HttpURLConnection urlRequest = (HttpURLConnection) url.openConnection();
            urlRequest.setRequestMethod("GET");
            urlRequest.addRequestProperty("Content-Type", "application/json");
            urlRequest.addRequestProperty("ACCEPT", "application/json");
            urlRequest.addRequestProperty("X-ZUMO-APPLICATION", mobileServiceAppId);
            urlRequest.addRequestProperty("email",email);
            urlRequest.addRequestProperty("password",pass);

            JSONObject[] response = null;

        try {

                // Prepare some objects to receive the bytes of data
                // from the Azure Mobile Service
                InputStream in = new BufferedInputStream(
                        urlRequest.getInputStream());
                BufferedReader bufferReader = new BufferedReader(
                        new InputStreamReader(in));

                // responseString will hold our JSON data
                StringBuilder responseString = new StringBuilder();
                String line;

                // Loop through the buffered input, reading JSON data
                while ((line = bufferReader.readLine()) != null) {
                    responseString.append(line);
                }

                // Convert responseString into a JSONArray
                JSONArray jsonArray = new JSONArray(responseString.toString());

                Toast.makeText(getApplicationContext(),jsonArray.length(),Toast.LENGTH_LONG).show();

                for(int i=0;i<jsonArray.length();i++)
                {
                    JSONObject obj = jsonArray.getJSONObject(i);
                    Log.d("ERROR",obj.getString("lastName"));
                }


            }
            catch(Exception ex)
            {
                Log.d("ERROR", ex.toString());
            }

我是否从响应中解析了错误的值？伙计们，我该如何解决这个问题？

Answer 1

这不是 JSON 数组，JSON 数组以“[”开头，以“]”结尾

{"firstName":"Roger","lastName":"Davis","email":"rog@gmail.com","password":"test123","profilePicture":"googleimagesblablabla"}

所以你应该改用JSONObject

Answer 2

实际上您的 json 响应中没有任何数组：

{"firstName":"Roger","lastName":"Davis","email":"rog@gmail.com","password":"test123","profilePicture":"googleimagesblablabla"}

它包含响应中的所有对象，您可以从下面给定的代码片段中解析您的响应。

JSONObject reader = new JSONObject(responseString.toString());
String firstName = reader.getString("firstName");
String lastName= reader.getString("lastName");
String email= reader.getString("email");
String password= reader.getString("password");
String profilePicture= reader.getString("profilePicture");

并从您的代码中删除此部分：

 // Convert responseString into a JSONArray
                JSONArray jsonArray = new JSONArray(responseString.toString());

                Toast.makeText(getApplicationContext(),jsonArray.length(),Toast.LENGTH_LONG).show();

                for(int i=0;i<jsonArray.length();i++)
                {
                    JSONObject obj = jsonArray.getJSONObject(i);
                    Log.d("ERROR",obj.getString("lastName"));
                }

Android 解析时出现异常 JSON URL

Android Exception while parsing JSON URL

mobile

android

json

gson

android-activity