Java SocketTimeoutException:读取超时httpclient

我有一个休息服务，每天服务约20米的请求。我得到以下异常。这个问题是间歇性的，我无法将这个问题和请求量联系起来。我在周末的时候也遇到了这个例外，当时的销量非常低。我通过检查

setStaleConnectionCheckEnabled

确保没有stele连接。我正在使用

httpclient 4.3.4

更新：进一步分析后了解更多详细信息-

从日志中，我可以看到服务在300毫秒内响应了大部分请求，但客户端连接到服务本身需要时间，在收到响应时，它已经超过了6秒的阈值，并出现了读取超时异常

getCause(): 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 sun.security.ssl.InputRecord.readFully(InputRecord.java:442)
at sun.security.ssl.InputRecord.read(InputRecord.java:480)
at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:934)
at sun.security.ssl.SSLSocketImpl.readDataRecord(SSLSocketImpl.java:891)
at sun.security.ssl.AppInputStream.read(AppInputStream.java:102)
at org.apache.http.impl.io.SessionInputBufferImpl.streamRead(SessionInputBufferImpl.java:139)
at org.apache.http.impl.io.SessionInputBufferImpl.fillBuffer(SessionInputBufferImpl.java:155)
at org.apache.http.impl.io.SessionInputBufferImpl.readLine(SessionInputBufferImpl.java:284)
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:261)
at org.apache.http.impl.DefaultBHttpClientConnection.receiveResponseHeader(DefaultBHttpClientConnection.java:165)
at org.apache.http.impl.conn.CPoolProxy.receiveResponseHeader(CPoolProxy.java:167)
at org.apache.http.protocol.HttpRequestExecutor.doReceiveResponse(HttpRequestExecutor.java:272)
at org.apache.http.protocol.HttpRequestExecutor.execute(HttpRequestExecutor.java:124)
at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:271)
at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:184)
at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:88)
at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:110)
at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:184)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:71)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:220)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:164)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:139)
at com.sample.SampleClient.doGet(SampleClient.java:137)

客户：

public MyRespBean doGet(String host, String path, List<NameValuePair> nameValuePairs, Map<String, String> headers, AuthParams authParams)
throws URISyntaxException, IOException
{
  RequestConfig requestConfig = RequestConfig.custom().setSocketTimeout(6000).setConnectTimeout(6000).setStaleConnectionCheckEnabled(true).build();
  CloseableHttpClient httpClient = HttpClientBuilder.create().setDefaultRequestConfig(requestConfig).build();
  URI uri = buildUri(host, path, nameValuePairs);
  HttpGet httpGet = new HttpGet(uri);
  httpGet.setHeader("Connection", "close");
  addHeaders(httpGet, headers, authParams);
 **//Error occurs at the following line**
 MyRespBean respBean = (MyRespBean)httpClient.execute(httpGet, new SimpleResponseHandler());
  httpClient.close();
  return respBean;
}

public MyRespBean doGet（字符串主机、字符串路径、列表名称值对、映射头、AuthParams AuthParams）
抛出URISyntaxException，IOException
{
RequestConfig RequestConfig=RequestConfig.custom（）.setSocketTimeout（6000）.setConnectTimeout（6000）.SetStaleconConnectionCheckEnabled（true）.build（）；
CloseableHttpClient httpClient=HttpClientBuilder.create（）.setDefaultRequestConfig（requestConfig.build（）；
URI=buildUri（主机、路径、nameValuePairs）；
HttpGet HttpGet=新的HttpGet（uri）；
setHeader（“连接”，“关闭”）；
addHeaders（httpGet、headers、authParams）；
**//错误发生在下一行**
MyRespBean respBean=（MyRespBean）httpClient.execute（httpGet，new SimpleResponseHandler（））；
httpClient.close（）；
返回响应bean；
}

您是服务的所有者是对的吗

如果是这样，我会检查为什么在应答时服务在数据包之间暂停超过6秒：根据异常判断，连接成功

---

可能的原因：连接周期性地慢，或者服务端的GC很长。甚至是一个长时间的周期性预热阶段（我不知道服务实施的细节，但对于某些特定的请求，服务可能需要花费6秒钟以上的时间来准备响应）-换句话说，任何阻止您的服务在6秒钟内应答的事情。

是的，我拥有服务和客户端。从日志中，我可以看到服务在300毫秒内响应，但连接到服务本身需要时间，在收到响应时，它已经超过了6秒的阈值，并出现了读取超时异常。一般来说，6秒的读取超时太短。