java - AsyncTask 期间出现 JSONException

Question

@Override
    protected Integer doInBackground(Void... params) 
    {
        String readMyJSON = readMyJSON();
                try {
                  JSONArray jsonArray = new JSONArray(readMyJSON);                    
                } catch (Exception e) {
                  e.printStackTrace(); 
                }
        return 0;
    }

这不起作用，在 JSONArray jsonArray = new JSONArray(readMyJSON); 期间，发生 JSONException。有人能告诉我问题出在哪里吗？提前致谢。

PS:我使用的方法:

   public String readMyJSON() 
   {
        StringBuilder builder = new StringBuilder();
        HttpClient client = new DefaultHttpClient();
        HttpGet httpGet = new HttpGet("http://search.twitter.com/search.json?q=android");
        try {
          HttpResponse response = client.execute(httpGet);
          StatusLine statusLine = response.getStatusLine();
          int statusCode = statusLine.getStatusCode();
          if (statusCode == 200) {
            HttpEntity entity = response.getEntity();
            InputStream content = entity.getContent();
            BufferedReader reader = new BufferedReader(new InputStreamReader(content));
            String line;
            while ((line = reader.readLine()) != null) {
              builder.append(line);
            }
          } else {
            Log.e(ParseJSON.class.toString(), "Failed to download file");
          }
        } catch (ClientProtocolException e) {
          e.printStackTrace();
        } catch (IOException e) {
          e.printStackTrace();
        }
        return builder.toString();
      }

这个方法看起来还可以。

Answer 1

简而言之，来自 twitter 的响应不是 JSON 数组，因此您会得到一个异常。如果您想要结果数组，请执行以下操作:

JSONObject object = (JSONObject) new JSONTokener(json).nextValue();
JSONArray results = object.getJSONArray("results");

我建议您阅读Twitter API docs 。具体来说，https://dev.twitter.com/docs/api/1/get/search .