我正在尝试使用http客户端使用PoolingClientConnectionManager为各个主机设置最大连接来命中服务器

//Code that inilizes my connection mananger and http client

HttpParams httpParam = httpclient.getParams();

HttpConnectionParams.setSoTimeout(httpParam,SOCKET_TIMEOUT);

HttpConnectionParams.setConnectionTimeout(httpParam, CONN_TIMEOUT);

httpclient.setParams(httpParam);

//Run a thread which closes Expired connections

new ConnectionManager(connManager).start();

//Code that executes my request

HttpPost httpPost = new HttpPost(url);

HttpEntity httpEntity = new StringEntity(request, "UTF-8");

httpPost.setEntity(httpEntity);

Header acceptEncoding = new BasicHeader("Accept-Encoding", "gzip,deflate");

httpPost.setHeader(acceptEncoding);

if(contenttype != null && !contenttype.equals("")){

Header contentType = new BasicHeader("Content-Type", contenttype);

httpPost.setHeader(contentType);

}

InputStream inputStream = null;

LOG.info(dataSource + URL + url + REQUEST + request);

HttpResponse response = httpclient.execute(httpPost);

那就是我们使用连接池来实现http持久性.

我们偶尔会收到此错误：

The target server failed to respond

org.apache.http.NoHttpResponseException: The target server failed to respond

at org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:95)

at org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:62)

at org.apache.http.impl.io.AbstractMessageParser.parse(AbstractMessageParser.java:254)

at org.apache.http.impl.AbstractHttpClientConnection.receiveResponseHeader(AbstractHttpClientConnection.java:289)

at org.apache.http.impl.conn.DefaultClientConnection.receiveResponseHeader(DefaultClientConnection.java:252)

at org.apache.http.impl.conn.ManagedClientConnectionImpl.receiveResponseHeader(ManagedClientConnectionImpl.java:191)

at org.apache.http.protocol.HttpRequestExecutor.doReceiveResponse(HttpRequestExecutor.java:300)

at org.apache.http.protocol.HttpRequestExecutor.execute(HttpRequestExecutor.java:127)

at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:517)

at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:906)

有谁知道如何解决这个问题？

我们也在关闭空闲连接.

有人可以帮忙.

解决方法:

可能是HttpClient中的一个错误.

如果您使用的是HttpClient 4.4,请尝试升级到4.4.1.

如果您想了解更多信息,请查看this link.

如果您无法升级,以下链接可能会有所帮助.

祝好运！

标签：java,apache,connection-pooling,httpclient

来源： https://codeday.me/bug/20191005/1855772.html