Android HttpPost請求超時

在我的應用程序中，我必須從4個不同的URL獲取數據，然後在獲取數據完成後，我必須以特定順序顯示項目。我正在使用HttoPost發送發佈請求。我使用不同的線程發送4個請求。當一個線程獲取數據時，它會增加一個計數。當計數達到4時，意味着所有4個線程都獲取了數據。問題是，有時四個線程中的一個不響應意味着defaultHttpClient.execute（post）不返回。由於這個原因，即使不拋出異常，我的計數也不會達到4，只有等待對話框一直顯示。我希望在固定的時間之後，無論它是否從服務器獲得響應，它都必須返回。任何想法？Android HttpPost請求超時

來源

2012-01-30 Khawar Raza

設置連接超時喜歡這裏：http://stackoverflow.com/questions/693997/how-to-set-httpresponse-timeout-for-android-in-java – edovino 2012-01-30 12:53:31

和使用CountDownLatch作爲初始值爲4的計數器。 – Jens 2012-01-30 13:09:39

對不起。 CountDownLatch是什麼意思？ – 2012-01-30 13:20:00

它不工作。我使用下面的類：

public class ConnectionManager { 

private ArrayList <NameValuePair> params; 
private ArrayList <NameValuePair> headers; 
private String url; 

public ConnectionManager(String url) { 
    this.url = url; 
    params = new ArrayList<NameValuePair>(); 
    headers = new ArrayList<NameValuePair>(); 
} 

public void addParam(String name, String value) 
{ 
    params.add(new BasicNameValuePair(name, value)); 
} 

public void addHeader(String name, String value) 
{ 
    headers.add(new BasicNameValuePair(name, value)); 
} 

public String sendRequest() throws Exception { 
    String serverResponse = ""; 
    HttpPost httpPostRequest = new HttpPost(url); 
    httpPostRequest.getParams().setParameter(CoreProtocolPNames.USE_EXPECT_CONTINUE, Boolean.FALSE); 
    //add headers 
    for(int i = 0; i < headers.size(); i++) { 
     StringEntity entity = new StringEntity(headers.get(i).getValue(),"UTF-8"); 
     httpPostRequest.setEntity(entity); 
    } 

    if(!params.isEmpty()){ 
     HttpEntity httpEntity = new UrlEncodedFormEntity(params,HTTP.UTF_8); 
     httpPostRequest.setEntity(httpEntity); 
    } 

    serverResponse = executeRequest(httpPostRequest); 
    return serverResponse; 
} 

private String executeRequest(HttpUriRequest request) throws Exception { 

    HttpParams params = new BasicHttpParams(); 
    HttpConnectionParams.setConnectionTimeout(params, 3000); 
    HttpConnectionParams.setSoTimeout(params, 10000); 
    DefaultHttpClient client = new DefaultHttpClient(params); 

    HttpResponse httpResponse; 
    String serverResponse = ""; 
    httpResponse = client.execute(request); 
    HttpEntity entity = httpResponse.getEntity(); 
    if (entity != null) { 
     InputStream instream = entity.getContent(); 
     serverResponse = convertStreamToString(instream); 
     instream.close(); 
    } 
    Log.d("server response", serverResponse); 
    return serverResponse; 
} 

private String convertStreamToString(InputStream is) { 

    BufferedReader reader = new BufferedReader(new InputStreamReader(is)); 
    StringBuilder sb = new StringBuilder(); 

    String line = null; 
    try { 
     while ((line = reader.readLine()) != null) { 
      sb.append(line + "\n"); 
     } 
    } catch (IOException e) { 
     e.printStackTrace(); 
    } finally { 
     try { 
      is.close(); 
     } catch (IOException e) { 
      e.printStackTrace(); 
     } 
    } 
    return sb.toString(); 
}

來源

2012-01-30 13:19:14

使用

HttpParams httpParameters = new BasicHttpParams(); 
// Set the timeout in milliseconds until a connection is established. 
int timeoutConnection = 3000; 
HttpConnectionParams.setConnectionTimeout(httpParameters, timeoutConnection); 
// Set the default socket timeout (SO_TIMEOUT) 
// in milliseconds which is the timeout for waiting for data. 
int timeoutSocket = 3000; 
HttpConnectionParams.setSoTimeout(httpParameters, timeoutSocket);

來源

2012-01-30 12:50:28 jeet

Android HttpPost請求超時

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