android inputstream不能從服務器頁面

Question

您好我使用下面的代碼，但我不能從urliStream。該url返回一個JSON數組。

URL url = new URL(tomato_search); 
URLConnection urlConnection = url.openConnection(); 
InputStream iStream = new BufferedInputStream(urlConnection.getInputStream()); 
readStream(iStream); 
iStream.close(); 

Answer 1

如果您使用http進行通信，最好使用HttpURLConnection。

JsonArray jsonArray; 
HttpURLConnection httpURLConnection = (HttpURLConnection) new URL("http://www.example.com/endpoint").openConnection(); 
httpURLConnection.setRequestMethod("GET"); 
httpURLConnection.setRequestProperty("Content-Type", "application/json;charset=utf-8"); 
httpURLConnection.connect(); 
InputStream is = httpsURLConnection.getInputStream(); 
try { 
     BufferedReader br = new BufferedReader(new InputStreamReader(is, "UTF-8")); 
     StringBuilder sb = new StringBuilder(); 
     while (br.readLine() != null) { 
      sb.append(br.readLine()).append("\n"); 
     } 
     br.close(); 

     jsonArray = new JSONArray(sb.toString()); 
    } catch (IOException | JSONException e) { 
     jsonArray = null; 
    }