我正在尝试使用HTTP客户端通过PoolingClientConnectionManager
命中服务器,为各个主机设置最大连接数。
//Code that initializes my connection manager 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);
也就是说,我们正在使用连接池来实现HTTP持久化。
我们偶尔会遇到这个错误:
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)
有人知道如何解决这个问题吗?
我们也正在关闭空闲连接。
请帮忙解决,谢谢。
http://hc.apache.org/httpcomponents-client-ga/tutorial/html/connmgmt.html