JSONException：试图从JSON检索数据的问题

Question

{"code":200,"status":"OK","data":{"timings":{"Fajr":"04:17","Sunrise":"05:30","Dhuhr":"12:20","Asr":"15:42","Sunset":"19:11","Maghrib":"19:11","Isha":"20:24","Imsak":"04:07","Midnight":"00:20"},"date":{"readable":"17 Jun 2017","timestamp":"1497652236"}}}

 class SaveTheFeed extends AsyncTask<Void, Void, Void>{
    String jsonString = "";
    String result = "";
    EditText chosenCity = (EditText) findViewById(R.id.editText3);
    String city = chosenCity.getText().toString();

    @Override
    protected Void doInBackground(Void... voids) {
        DefaultHttpClient httpClient = new DefaultHttpClient(new BasicHttpParams());
        HttpPost httpPost = new HttpPost("http://api.aladhan.com/timingsByCity?city=" + city + "&country=AE&method=2");
        httpPost.setHeader("Content-type", "application/json");
        InputStream inputStream;

        try{
            HttpResponse response = httpClient.execute(httpPost);
            HttpEntity entity = response.getEntity();
            inputStream = entity.getContent();
            BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream, "UTF-8"), 8);
            StringBuilder builder = new StringBuilder();
            String line;
            while ((line = reader.readLine()) !=null){
                builder.append(line + "\n");
            }
            jsonString = builder.toString();

            JSONObject jObject = new JSONObject(jsonString);

            JSONObject data = (JSONObject) jObject.get("data");

            JSONArray jArray = (JSONArray) data.get("timings");

            outputTimings(jArray);

        } catch (ClientProtocolException e) {
            e.printStackTrace();
        } catch (IOExcepthtml" target="_blank">ion e) {
            e.printStackTrace();
        } catch (JSONException e) {
            e.printStackTrace();
        }

        return null;
    }
    @Override
    protected void onPostExecute(Void aVoid) {
        TextView prayerTimes = (TextView) findViewById(R.id.prayerTimes);
        prayerTimes.setText(result);
    }

    protected void outputTimings(JSONArray jsonArray){
        String[] prayers= {"Fajr", "Sunrise", "Dhuhr", "Asr", "Sunset", "Maghrib", "Isha", "Imsak", "Midnight"};
        try{
            for(int i = 0; i < jsonArray.length(); i++){
                JSONObject cityObject =
                        jsonArray.getJSONObject(i);
                result = result +  prayers[i] + " : "+
                         cityObject.getString(prayers[i]) + "\n";
            }

06-17 00:24:15.973 286 6-2907/azanmute.android.com.azanmute W/system.err:org.json.jsonException：java.lang.String类型的值不能转换为JSONObject 06-17 00:24:15.973 286 6-2907/azanmute.android.com.azanmute W/system.err：at org.json.jsemismatch(json.java:111)06-17 00:24:15.973 286 6-2907/azanmute.android.com.typemismatch:15.974 286 6-2907/azanmute.android.com.azanmute W/system.err：at org.json.JSONObject.（JSONObject.java：173）06-17 00:24:15.974 286 6-2907/azanmute.android.com.azanmute W/system.err：at azanmute.android.com.azanmute w/system.err：at azanmute.android.com.azanmute.MainActivity$savethefeed.doinbackground(mainActivity.java:60)06-17 00:24:15.974 286 6-2907/azanmute.android.com.azanmute W/system.err:at android.os.asynctask$2.call(asynctask.java:305)06-17 00:24:15.974 286-29072907/azanmute.android.com.azanmute W/system.err:at java.util.concurrent.futuretask.run（futuretask.java:237)06-17 00:24:15.974 286-2907/azanmute.android.com.azanmute W/system.err:at android.os.asynctask$serialexecutor$1.run（asynctask.java:243)06-17 00:24:15.974 286-2907/azanmute.android.com.azanmute executor.java：1133）06-17 00:24:15.974 286 6-2907/azanmute.android.com.azanmute W/system.err:at java.util.concurrent.threadpoolexecutor$worker.run（threadpoolexecutor.java：607）06-17 00:24:15.974 286 6-2907/azanmute.android.com.azanmute W/system.err:at java.lang.thread.run（thread.java：761）

因此，我的理解是，我错误地指向了数据，或者将JSONObjects与JSONArrays混淆了。我已经尝试了这两个，但仍然收到相同的错误。

Answer 1

在本例中，您没有混淆JSON对象和JSON数组。这肯定是一个JSONObject。

您可能在字符串中添加了JSONObject构造函数不喜欢的“不可见”字符（即“\n”）。试试这个：

JSONObject jObject = new JSONObject(jsonString.substring(jsonString.indexOf("{"), jsonString.lastIndexOf("}") + 1));

另外，请注意“timings”也是一个JSONObject，而不是JSONArray。JSONArray的示例，其中“CARS”是JSONArray：

{"name":"John","age":30,"cars":[ "Ford", "BMW", "Fiat" ]}