设置Apache HTTP客户端的超时时间

Question

我正在使用Apache http客户端4.3.2发送GET请求。我所做的是：

private final RequestConfig requestConfig = RequestConfig.custom()
        .setConnectTimeout(1000)
        .setConnectionRequestTimeout(1000)
        .setSocketTimeout(1000)
        .build();
private final HttpClient client = HttpClientBuilder.create()
        .disableAuthCaching()
        .disableAutomaticRetries()
        .disableConnectionState()
        .disableContentCompression()
        .disableCookieManagement()
        .disableRedirectHandling()
        .setDefaultRequestConfig(requestConfig)
        .build(); 

当发送请求时：

HttpGet request = null;

try {
    request = new HttpGet(url);
    if (client.execute(request).getStatusLine().getStatusCode() == 200) {
        /* do some work here */
    }
} catch (Exception e) {
    Logger.error(e);
} finally {
    if (request != null) {
        request.releaseConnection();
    }
}

但是我的一些请求仍然需要很长时间才能超时。这是异常的堆栈跟踪：

java.net.SocketTimeoutException: Read timed out
    at java.net.SocketInputStream.socketRead0(Native Method)
    at java.net.SocketInputStream.read(SocketInputStream.java:152)
    at java.net.SocketInputStream.read(SocketInputStream.java:122)
    at org.apache.http.impl.io.SessionInputBufferImpl.streamRead(SessionInputBufferImpl.java:136)
    at org.apache.http.impl.io.SessionInputBufferImpl.fillBuffer(SessionInputBufferImpl.java:152)
    at org.apache.http.impl.io.SessionInputBufferImpl.readLine(SessionInputBufferImpl.java:270)
    at org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:140)
    at org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:57)
    at org.apache.http.impl.io.AbstractMessageParser.parse(AbstractMessageParser.java:260)
    at org.apache.http.impl.DefaultBHttpClientConnection.receiveResponseHeader(DefaultBHttpClientConnection.java:161)
    at sun.reflect.GeneratedMethodAccessor5.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.apache.http.impl.conn.CPoolProxy.invoke(CPoolProxy.java:138)
    at com.sun.proxy.$Proxy0.receiveResponseHeader(Unknown Source)
    at org.apache.http.protocol.HttpRequestExecutor.doReceiveResponse(HttpRequestExecutor.java:271)
    at org.apache.http.protocol.HttpRequestExecutor.execute(HttpRequestExecutor.java:123)
    at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:254)
    at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:195)
    at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:186)
    at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:82)
    at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:106)
    at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:57)

我是否需要设置其他超时时间？我做错了什么？

- Majid Azimi

---

我有同样的问题，request.viaProxy(proxy).connectTimeout(1000) .socketTimeout(1000).execute() .returnContent().asString(StandardCharsets.UTF_8);甚至需要1分钟！ - soulmachine

Answer 1

当我遇到这个问题时，我将我的请求更改为在每个请求上配置超时时间。

//...
HttpRequestBase request = new HttpGet(url); //or HttpPost

RequestConfig.Builder requestConfig = RequestConfig.custom();
requestConfig.setConnectTimeout(30 * 1000);
requestConfig.setConnectionRequestTimeout(30 * 1000);
requestConfig.setSocketTimeout(30 * 1000);

request.setConfig(requestConfig.build());

CloseableHttpResponse response = client.execute(request);
//...

它工作得很好。

- Jairton Junior

Answer 2

以下是一个示例代码片段，实现目标:

int timeout = 5;
RequestConfig config = RequestConfig.custom()
  .setConnectTimeout(timeout * 1000)
  .setConnectionRequestTimeout(timeout * 1000)
  .setSocketTimeout(timeout * 1000).build();
CloseableHttpClient client =  HttpClientBuilder.create().setDefaultRequestConfig(config).build();

这是一种建议的方式，以类型安全和易读的方式配置所有三个超时时间。

详情请参见此处

- Tekle

Answer 3

private static final Integer TIMEOUT = 300;
private static final Integer MILLISECONDS = 1000;

RequestConfig config = 
RequestConfig.custom()
             .setConnectTimeout(TIMEOUT * MILLISECONDS)
             .setConnectionRequestTimeout(TIMEOUT * MILLISECONDS)
             .setSocketTimeout(TIMEOUT * MILLISECONDS)
             .build();

httpClientBuilder.setDefaultRequestConfig(config);
httpClientBuilder.setSSLSocketFactory(sslConnectionSocketFactory);   

我正在遇到失败的问题：连接超时：尽管我设置了5分钟的时间，但连接错误持续了20秒。

- madhusudhan

Answer 4

您可以尝试使用HttpUriRequest#abort()中止请求，请参见https://hc.apache.org/httpcomponents-client-4.3.x/httpclient/apidocs/org/apache/http/client/methods/HttpUriRequest.html#abort%28%29。 然而，设置一个不需要拦截的超时会更好。

- static-max

Answer 5

.setSocketTimeout(1000) 表示应用程序在读取数据包时的1秒不活动会导致此异常。

您可以通过在调试模式下运行代码并延迟移动到下一步来测试此功能。

检查您期望应用程序执行数据读取操作所需的最大可能时间限制，例如50秒（大容量数据的极端情况）-> 然后更新 .setSocketTimeout(50000)

- DecKno