值java.lang.String類型的<！DOCTYPE不能轉換爲JSONObject

Question

應用程序運行時彈出以下錯誤，我有兩個類ListViewAdapter其他是JSONFunctions？什麼是錯誤，也許這是我的網址？我的API 77.105.36.203/api/v1/info的問題或問題是函數doInBackgoround JSONObject？

JSONObject jsonobject; 
JSONArray jsonarray; 
ListView listview; 
ListViewAdapter adapter; 
ProgressDialog mProgressDialog; 
ArrayList<HashMap<String, String>> arraylist; 

static String ID = "id"; 
static String IME = "ime"; 
static String ADRESA = "adresa"; 
static String SLIKA = "slika"; 

@Override 
public View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState) { 
    View rootView = inflater.inflate(R.layout.listview_main, container, false); 
    new DownloadJSON().execute(); 
    return rootView; 
} 

// DownloadJSON AsyncTask 
private class DownloadJSON extends AsyncTask<Void, Void, Void> { 

    @Override 
    protected void onPreExecute() { 
     super.onPreExecute(); 
     // Create a progressdialog 
     mProgressDialog = new ProgressDialog(getActivity()); 
     // Set progressdialog title 
     mProgressDialog.setTitle("Android JSON Parse Tutorial"); 
     // Set progressdialog message 
     mProgressDialog.setMessage("Loading..."); 
     mProgressDialog.setIndeterminate(false); 
     // Show progressdialog 
     mProgressDialog.show(); 
    } 

    @Override 
    protected Void doInBackground(Void... params) { 
     // Create an array 
     arraylist = new ArrayList<HashMap<String, String>>(); 
     // Retrieve JSON Objects from the given URL address 
     jsonobject = JSONfunctions 
       .getJSONfromURL("http://77.105.36.203/api/v1/info"); 

     try { 
      // Locate the array name in JSON 
      jsonarray = jsonobject.getJSONArray("objects"); 

      for (int i = 0; i < jsonarray.length(); i++) { 
       HashMap<String, String> map = new HashMap<String, String>(); 
       jsonobject = jsonarray.getJSONObject(i); 
       // Retrive JSON Objects 
       map.put("id", jsonobject.getString("id")); 
       map.put("ime", jsonobject.getString("ime")); 
       map.put("adresa", jsonobject.getString("adresa")); 
       map.put("slika", jsonobject.getString("slika")); 
       // Set the JSON Objects into the array 
       arraylist.add(map); 
      } 
     } catch (JSONException e) { 
      Log.e("Error", e.getMessage()); 
      e.printStackTrace(); 
     } 
     return null; 
    } 

    @Override 
    protected void onPostExecute(Void args) { 
     // Locate the listview in listview_main.xml 
     listview = (ListView) getView().findViewById(R.layout.listview_item); 
     // Pass the results into ListViewAdapter.java 
     adapter = new ListViewAdapter(getActivity(), arraylist); 
     // Set the adapter to the ListView 
     listview.setAdapter(adapter); 
     // Close the progressdialog 
     mProgressDialog.dismiss(); 
    } 
} 

這是錯誤日誌。

07-10 16:15:59.605: E/log_tag(5389): Error parsing data [Value <!DOCTYPE of type java.lang.String cannot be converted to JSONObject]07-10 16:15:59.605: E/AndroidRuntime(5389): FATAL EXCEPTION: AsyncTask #2 

Answer 1

請在您的doInBackground（）方法中檢查此代碼，並告訴我是否有效。

try { 
      // Locate the array name in JSON 
      //jsonarray = jsonobject.getJSONArray("objects"); 
      JSONObject jsonObject = jsonobject.getJSONObject("objects"); 
      for (int i = 0; i < jsonarray.length(); i++) { 
       HashMap<String, String> map = new HashMap<String, String>(); 
       //jsonobject = jsonarray.getJSONObject(i); 
       // Retrive JSON Objects 
       map.put("id", jsonObject.getString("id")); 
       map.put("ime", jsonObject.getString("ime")); 
       map.put("adresa", jsonObject.getString("adresa")); 
       map.put("slika", jsonObject.getString("slika")); 
       // Set the JSON Objects into the array 
       arraylist.add(map); 
      } 
     } catch (JSONException e) { 
      Log.e("Error", e.getMessage()); 
      e.printStackTrace(); 
     }