Question

试图在其他答案中找到，但仍然无法做到：

class GetUpdate extends AsyncTask<Void, Void, Void>{

    JSONObject jobj = null;

    @Override
    protected Void doInBackground(Void... params) {             

        //JSON
        JSONParser jparser = new JSONParser();
        JSONObject data = jparser.getJSONFromUrl("http://myserver.com/file.txt");                       

        String title2 = "";

        try {
            jobj = data.getJSONObject("party1");                
            title2 = jobj.getString("title");
        } catch (JSONException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        //title = new String[] { title2,title2,title2,title2};
        Log.i("ABCDE", "Got the address: " + title2);

        return null;
    }

}

以下是JSONParser.java（JSON - single file to use with android app）获取的JSON：

    {
   "party1": {
      "title": "Screen no. 1",
      "address": "Sesame Street",
      "date": "01-01-2014",
      "image": "http://myserver.com/image.jpg",
      "destination": "somewhere"
   },
   "party2": {
      "title": "Screen no. 2",
      "address": "Oak Street",
      "date": "01-01-2014",
      "image": "http://myserver.com/image.jpg",
      "destination": "somewhere"
   }
}

任何人都可以发现问题吗？

edit1： LogCat：

    12-14 19:13:24.341: E/AndroidRuntime(22725): FATAL EXCEPTION: AsyncTask #1
12-14 19:13:24.341: E/AndroidRuntime(22725): Process: com.example.app, PID: 22725
12-14 19:13:24.341: E/AndroidRuntime(22725): java.lang.RuntimeException: An error occured while executing doInBackground()
12-14 19:13:24.341: E/AndroidRuntime(22725):    at android.os.AsyncTask$3.done(AsyncTask.java:300)
12-14 19:13:24.341: E/AndroidRuntime(22725):    at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:355)
12-14 19:13:24.341: E/AndroidRuntime(22725):    at java.util.concurrent.FutureTask.setException(FutureTask.java:222)
12-14 19:13:24.341: E/AndroidRuntime(22725):    at java.util.concurrent.FutureTask.run(FutureTask.java:242)
12-14 19:13:24.341: E/AndroidRuntime(22725):    at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231)
12-14 19:13:24.341: E/AndroidRuntime(22725):    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
12-14 19:13:24.341: E/AndroidRuntime(22725):    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
12-14 19:13:24.341: E/AndroidRuntime(22725):    at java.lang.Thread.run(Thread.java:841)
12-14 19:13:24.341: E/AndroidRuntime(22725): Caused by: java.lang.NullPointerException
12-14 19:13:24.341: E/AndroidRuntime(22725):    at com.example.app.MainActivity$GetUpdate.doInBackground(MainActivity.java:78)
12-14 19:13:24.341: E/AndroidRuntime(22725):    at com.example.app.MainActivity$GetUpdate.doInBackground(MainActivity.java:1)
12-14 19:13:24.341: E/AndroidRuntime(22725):    at android.os.AsyncTask$2.call(AsyncTask.java:288)
12-14 19:13:24.341: E/AndroidRuntime(22725):    at java.util.concurrent.FutureTask.run(FutureTask.java:237)
12-14 19:13:24.341: E/AndroidRuntime(22725):    ... 4 more
12-14 19:13:56.910: E/JSON Parser(22725): Error parsing data org.json.JSONException: Unterminated object at character 192 of {
12-14 19:13:56.910: E/JSON Parser(22725):    "party1": {
12-14 19:13:56.910: E/JSON Parser(22725):       "title": "Screen no. 1",
12-14 19:13:56.910: E/JSON Parser(22725):       "address": "Sesame Street",
12-14 19:13:56.910: E/JSON Parser(22725):       "date": "01-01-2014",
12-14 19:13:56.910: E/JSON Parser(22725):       "image": "http://myserver.com/image.jpg",
12-14 19:13:56.910: E/JSON Parser(22725):       "destination": "somewhere"
12-14 19:13:56.910: E/JSON Parser(22725):    },
12-14 19:13:56.910: E/JSON Parser(22725):    "party2": {
12-14 19:13:56.910: E/JSON Parser(22725):       "title": "Screen no. 2",
12-14 19:13:56.910: E/JSON Parser(22725):       "address": "Oak Street",
12-14 19:13:56.910: E/JSON Parser(22725):       "date": "01-01-2014",
12-14 19:13:56.910: E/JSON Parser(22725):       "image": "http://myserver.com/image.jpg",
12-14 19:13:56.910: E/JSON Parser(22725):       "destination": "somewhere"
12-14 19:13:56.910: E/JSON Parser(22725):    },
12-14 19:13:56.910: E/JSON Parser(22725):    "party3": {
12-14 19:13:56.910: E/JSON Parser(22725):       "title": "Screen no. 1",
12-14 19:13:56.910: E/JSON Parser(22725):       "address": "Sesame Street",
12-14 19:13:56.910: E/JSON Parser(22725):       "date": "01-01-2014",
12-14 19:13:56.910: E/JSON Parser(22725):       "image": "http://myserver.com/image.jpg",
12-14 19:13:56.910: E/JSON Parser(22725):       "destination": "somewhere"
12-14 19:13:56.910: E/JSON Parser(22725):    },
12-14 19:13:56.910: E/JSON Parser(22725):    "party4": {
12-14 19:13:56.910: E/JSON Parser(22725):       "title": "Screen no. 1",
12-14 19:13:56.910: E/JSON Parser(22725):       "address": "Sesame Street",
12-14 19:13:56.910: E/JSON Parser(22725):       "date": "01-01-2014",
12-14 19:13:56.910: E/JSON Parser(22725):       "image": "http://myserver.com/image.jpg",
12-14 19:13:56.910: E/JSON Parser(22725):       "destination": "somewhere"
12-14 19:13:56.910: E/JSON Parser(22725):    }
12-14 19:13:56.910: E/JSON Parser(22725): }

解析数据时出错org.json.JSONException：字符192处的输入结束

0 个答案: