Question

朋友，

当我尝试调用webservice并且服务器/互联网不可用时，我遇到了问题。看来，连接需要很长时间才能超时

我可以手动设置timout以向用户显示错误消息吗？

任何帮助将不胜感激。

Answer 1

您可以尝试这样做：

URL url;
URLConnection connection;
try {
    url = new URL("http://foo.bar.com");
    connection = url.openConnection();
    connection.setConnectTimeout(3000); // set 3 seconds for timeout
    connection.connect();
}catch(SocketTimeoutException ss){
    // show message to the user
}

Answer 2

有两种超时：

连接超时

这是建立连接的时间

套接字超时

这是等待接收数据的超时，将它们中的任何一个设置为0意味着无限超时，并且它是两者的默认值，设置其中一个不会影响另一个。

    try{

    BasicHttpParams httpParams = new BasicHttpParams();

    //this will set socket timeout
    HttpConnectionParams.setSoTimeout(httpParams, /*say*/ 3000);

    //this will set connection timeout
    HttpConnectionParams.setConnectionTimeout(httpParams, 3000);

    client = new DefaultHttpClient(httpParams);

    String url = "some-url";            
    HttpGet httpGet = new HttpGet(url); 
    response = httpClient.execute(httpGet);
    //here use the received response

    }
    catch(ConnectTimeoutException ex)    {
       //handle connection timeout here
    }
    catch(SocketTimeoutException ex)   {
       //handle socket timeout here
    }

Answer 3

以这种方式设置您的HttpClient。

    BasicHttpParams httpParams = new BasicHttpParams();
    ConnManagerParams.setTimeout(httpParams, connectionTimeoutInMs);
    httpClient = new DefaultHttpClient(httpParams);

Answer 4

This will work always...


try     {   
    HttpParams httpParams = new BasicHttpParams();
    HttpConnectionParams.setConnectionTimeout(httpParams, Constants.CONN_TIMEOUT);
    HttpConnectionParams.setSoTimeout(httpParams, Constants.SOCKET_CONN_TIMEOUT);
    DefaultHttpClient httpClient = new DefaultHttpClient(httpParams);
    url = "write-your-web-url-here";            
    HttpGet httpGet = new HttpGet(url); 
    response = httpClient.execute(httpGet);
    HttpEntity entity = response.getEntity`enter code here`();
    if(entity != null) is = entity.getContent();
}catch(ConnectTimeoutException timeoutException)    {
    System.out.println("ConnectTimeoutException Occured...");
}catch(SocketTimeoutException socketTimeoutException)   {
    System.out.println("SocketTimeoutException Occured...")
}catch(Exception e){
    System.out.println("Exception Occured...");
}

如何在android中实现请求超时？

4 个答案: