48

如何在 httpcomponents httpclient 中设置连接超时？我在以下位置找到了文档：http ://hc.apache.org/httpcomponents-client-ga/tutorial/html/connmgmt.html但不清楚这些参数是如何实际设置的。

SO_TIMEOUT此外，解释和之间的区别CONNECTION_TIMEOUT将是有帮助的。

4

5 回答 5

108

在 Apache Http Client 4.3 版中，配置被重构（再次）。新方式如下所示：

RequestConfig.Builder requestBuilder = RequestConfig.custom();
requestBuilder.setConnectTimeout(timeout);
requestBuilder.setConnectionRequestTimeout(timeout);

HttpClientBuilder builder = HttpClientBuilder.create();     
builder.setDefaultRequestConfig(requestBuilder.build());
HttpClient client = builder.build();
于 2013-11-07T13:12:59.900 回答
13

在 HttpClient 4.3 版本中，您可以使用以下示例.. 说 5 秒

int timeout = 5;
RequestConfig config = RequestConfig.custom()
  .setConnectTimeout(timeout * 1000)
  .setConnectionRequestTimeout(timeout * 1000)
  .setSocketTimeout(timeout * 1000).build();
CloseableHttpClient client = 
  HttpClientBuilder.create().setDefaultRequestConfig(config).build();
HttpGet request = new HttpGet("http://localhost:8080/service"); // GET Request
response = client.execute(request);
于 2014-08-19T09:37:32.213 回答
9

@jontro 的答案是正确的，但是有一个关于如何做到这一点的代码片段总是很好。有两种方法可以做到这一点：

版本 1：为以下每个参数设置 10 秒超时：

HttpClient httpclient = new DefaultHttpClient();
// this one causes a timeout if a connection is established but there is 
// no response within 10 seconds
httpclient.getParams().setParameter(CoreConnectionPNames.SO_TIMEOUT, 10 * 1000);

// this one causes a timeout if no connection is established within 10 seconds
httpclient.getParams().setParameter(CoreConnectionPNames.CONNECTION_TIMEOUT, 10 * 1000);

// now do the execute:
HttpGet httpget = new HttpGet(URL);
HttpResponse response = httpclient.execute(httpget);



版本 2：还为以下每个参数设置 10 秒超时：

HttpParams params = new BasicHttpParams();
HttpConnectionParams.setConnectionTimeout(params, 10 * 1000);
HttpConnectionParams.setSoTimeout(params, 10 * 1000);

HttpClient httpclient = new DefaultHttpClient(params);
HttpGet httpget = new HttpGet(URL);
HttpResponse response = httpclient.execute(httpget);
于 2013-01-24T20:34:47.933 回答
5

在第 2.5 节中，您会看到如何设置 CONNECTION_TIMEOUT 参数的示例。

CONNECTION_TIMEOUT 是等待初始连接的时间，SO_TIMEOUT 是您在建立连接后读取数据包时等待的超时时间。

于 2011-05-16T23:09:57.207 回答
4

我为整个请求设置了一个硬超时来解决java.net.SocketInputStream.socketRead0问题。

private static final ScheduledExecutorService SCHEDULED_EXECUTOR = Executors.newSingleThreadScheduledExecutor()

HttpGet request = new HttpGet("http://www.example.com")
final Runnable delayedTask = new Runnable() {
    @Override
    public void run() {
        request.abort()
    }
}
SCHEDULED_EXECUTOR.schedule(delayedTask, 100000, TimeUnit.MILLISECONDS)
于 2015-09-05T08:59:20.970 回答