解析数据org.json.JSONException时出错：值

Question

I am trying to following a tutorial get json to ListView , this app just shows Array in json . 我正在尝试按照教程将json获取到ListView ，此应用仅显示json中的Array 。 When I use the url source from this site , the app works completely but when I use local data json from my database, I always get an error. 当我从该站点使用url源时，该应用程序完全可以运行，但是当我从数据库中使用本地数据json ，总是会收到错误消息。

The error is 错误是

Error parsing data org.json.JSONException: Value <!-- of type java.lang.String 
cannot be converted to JSONObject

and show error in line 99 and 68 并在第99和68行显示错误

This my code 这是我的代码

tes.html tes.html

<html>
  <head></head>
  <body>
    { "android": [ { "ver": "1.5", "name": "Cupcake", "api": "API level 3" }, 
    { "ver": "1.6", "name": "Donut", "api": "API level 4" }, 
    { "ver": "2.0-2.1", "name": "Eclair", "api": "API level 5-7" }, 
    { "ver": "2.2", "name": "Froyo", "api": "API level 8" }, 
    { "ver": "2.3", "name": "Gingerbread", "api": "API level 9-10" }, 
    { "ver": "3.0-3.2", "name": "Honeycomb", "api": "API level 11-13" }, 
    { "ver": "4.0", "name": "Ice Cream Sandwich", "api": "API level 14-15" }, 
    { "ver": "4.1-4.3", "name": "JellyBean", "api": "API level 16-18" }, 
    { "ver": "4.4", "name": "KitKat", "api": "API level 19" } ] }
  <body>
</html>

This my JSONParse class 这是我的JSONParse类

private class JSONParse extends AsyncTask<String, String, JSONObject> {  // THIS LINE 68 ERROR
    private ProgressDialog pDialog;

    @Override
    protected void onPreExecute() {
        super.onPreExecute();
        ver = (TextView) getActivity().findViewById(R.id.vers);
        name = (TextView) getActivity().findViewById(R.id.name);
        api = (TextView) getActivity().findViewById(R.id.api);
        //head = (TextView) getActivity().findViewById(R.id.head);
        //note = (TextView) getActivity().findViewById(R.id.note);
        pDialog = new ProgressDialog(getActivity());
        pDialog.setMessage("Getting Data ...");
        pDialog.setIndeterminate(false);
        pDialog.setCancelable(true);
        pDialog.show();
    }

    @Override
    protected JSONObject doInBackground(String... args) {
        JSONParser jParser = new JSONParser();
        // Getting JSON from URL
        JSONObject json = jParser.makeHttpRequestWithoutParams(url);
        return json;
    }

    @Override
    protected void onPostExecute(JSONObject json) {
        pDialog.dismiss();
        try {
            // Getting JSON Array from URL
            android = json.getJSONArray(TAG_OS); //THIS LINE 99 ERROR
            for(int i = 0; i < android.length(); i++) {
                JSONObject c = android.getJSONObject(i);
                // Storing  JSON item in a Variable
                String ver = c.getString(TAG_VER);
                String name = c.getString(TAG_NAME);
                String api = c.getString(TAG_API);
                // Adding value HashMap key => value
                HashMap<String, String> map = new HashMap<String, String>();
                map.put(TAG_VER, ver);
                map.put(TAG_NAME, name);
                map.put(TAG_API, api);
                oslist.add(map);
                list=(ListView) getActivity().findViewById(R.id.list);
                ListAdapter adapter = new SimpleAdapter(getActivity(),
                                              oslist,
                                              R.layout.list_v,
                                              new String[] { TAG_VER,TAG_NAME, TAG_API },
                                              new int[] { R.id.vers,R.id.name, R.id.api}
                                      );
                list.setAdapter(adapter);
                list.setOnItemClickListener(new AdapterView.OnItemClickListener() {
                    @Override
                    public void onItemClick(AdapterView<?> parent, View view,
                                            int position, long id) {
                        Toast.makeText(getActivity(), "You Clicked at " + oslist.get(+position).get("name"), Toast.LENGTH_SHORT).show();
                    }
                });
            }
        } catch (JSONException e) {
            e.printStackTrace();
        }
    }
}

this my JSONObject 这是我的JSONObject

public JSONObject makeHttpRequestWithoutParams(String url) {
    // Making HTTP request
    try {
        // defaultHttpClient
        DefaultHttpClient httpClient = new DefaultHttpClient();
        HttpPost httpPost = new HttpPost(url);
        HttpResponse httpResponse = httpClient.execute(httpPost);
        HttpEntity httpEntity = httpResponse.getEntity();
        is = httpEntity.getContent();
    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
    } catch (ClientProtocolException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }
    try {
        BufferedReader reader = new BufferedReader(new InputStreamReader(
                is, "iso-8859-1"), 8);
        StringBuilder sb = new StringBuilder();
        String line = null;
        while ((line = reader.readLine()) != null) {
            sb.append(line + "\n");
        }
        is.close();
        json = sb.toString();
    } catch (Exception e) {
        Log.e("Buffer Error", "Error converting result " + e.toString());
    }
    // try parse the string to a JSON object
    try {
        jObj = new JSONObject(json);
    } catch (JSONException e) {
        Log.e("JSON Parser", "Error parsing data " + e.toString());
    }
    // return JSON String
    return jObj;
}

hope someone can help me thanks 希望有人可以帮我谢谢

Answer 1

Your "tes.html" (sic) source should not have any HTML tags in it. 您的“ tes.html”（原文如此）源中不应包含任何HTML标记。 It should be JSON text only and probably should be named "test.json" instead (though the name of the file shouldn't really matter). 它应该仅是JSON文本，并且可能应该命名为“ test.json”（尽管文件名实际上并不重要）。

Proposed test.json: 建议的test.json：

{ "android": [ { "ver": "1.5", "name": "Cupcake", "api": "API level 3" }, 
{ "ver": "1.6", "name": "Donut", "api": "API level 4" }, 
{ "ver": "2.0-2.1", "name": "Eclair", "api": "API level 5-7" }, 
{ "ver": "2.2", "name": "Froyo", "api": "API level 8" }, 
{ "ver": "2.3", "name": "Gingerbread", "api": "API level 9-10" }, 
{ "ver": "3.0-3.2", "name": "Honeycomb", "api": "API level 11-13" }, 
{ "ver": "4.0", "name": "Ice Cream Sandwich", "api": "API level 14-15" }, 
{ "ver": "4.1-4.3", "name": "JellyBean", "api": "API level 16-18" }, 
{ "ver": "4.4", "name": "KitKat", "api": "API level 19" } ] }

解析数据org.json.JSONException时出错：值

问题描述

1 个解决方案

解决方案1
2 已采纳 2014-09-17 02:04:13

解析数据org.json.JSONException时出错：值

问题描述

1 个解决方案

解决方案1 2 已采纳 2014-09-17 02:04:13

解决方案1
2 已采纳 2014-09-17 02:04:13