Question

为了模拟一个有很多用户的web应用程序，我使用了for循环，我知道它仍然非常不同，因为这将是单线程和所有这些。我的代码在

之下

public CloseableHttpClient getHttpClient() {
        try{
            SSLContext context = null;
            TrustManager[] trustAllCerts = new TrustManager[] { new X509TrustManager() {
                public java.security.cert.X509Certificate[] getAcceptedIssuers() {
                    return null;
                }

                public void checkClientTrusted(java.security.cert.X509Certificate[] certs, String authType) {
                }

                public void checkServerTrusted(java.security.cert.X509Certificate[] certs, String authType) {
                }
            } };

            try {
                context = SSLContext.getInstance("SSL");
            } catch (NoSuchAlgorithmException e1) {
                e1.printStackTrace();
            }
            try {
                context.init(null, trustAllCerts, new java.security.SecureRandom());
            } catch (KeyManagementException e1) {
                e1.printStackTrace();
            }

            SSLConnectionSocketFactory sslConnectionFactory = new SSLConnectionSocketFactory(context, SSLConnectionSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER);
            Registry<ConnectionSocketFactory> socketFactoryRegistry = RegistryBuilder.<ConnectionSocketFactory> create()
                      .register("https", sslConnectionFactory)
                      .register("http", new PlainConnectionSocketFactory()).build();

            PoolingHttpClientConnectionManager cm = new PoolingHttpClientConnectionManager(socketFactoryRegistry);
             // Increase max total connection to 200
             cm.setMaxTotal(20);
             // Increase default max connection per route to 20
             cm.setDefaultMaxPerRoute(10);
             RequestConfig defaultRequestConfig = RequestConfig.custom()
                        .setSocketTimeout(5000)
                        .setConnectTimeout(5000)
                        .setConnectionRequestTimeout(5000)
                        .build();
             CloseableHttpClient httpClient = HttpClients.custom().setConnectionManager(cm).setConnectionManagerShared(true)
                     .setDefaultRequestConfig(defaultRequestConfig).build();
            return httpClient;
        }catch(Exception ce){

        }
        return null;
    }

然后在循环中我使用它如下

try{
for(int i=0;i<500;i++){
                client = getHttpClient();
request = new HttpPost("Some https URL");
              HttpResponse response = client.execute(request);
              int statusCode = response.getStatusLine().getStatusCode();
 if (statusCode == 200 ){
                    entity = response.getEntity();
                    String content = EntityUtils.toString(entity);
}
                else{
                    entity = response.getEntity();
                    String content = EntityUtils.toString(entity);
}}
catch(Exception ce){}
finally{
                  try {
                        EntityUtils.consume(entity);
                        request.releaseConnection();
                        client.close();
                        } catch (IOException e) {
                    }
              }

我收到少量请求的响应，而少数读取超时失败，如果我增加最大连接我得到的几个失败如果我在连接管理器中保持max conn为200仍然我得到的失败但没有这个配置多少，我错过了什么。

以下的例外情况

java.net.SocketTimeoutException：读取超时在java.net.SocketInputStream.socketRead0（本机方法）在java.net.SocketInputStream.read（SocketInputStream.java:152）在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:946） at sun.security.ssl.SSLSocketImpl.readDataRecord（SSLSocketImpl.java:903） 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）在org.apache.http.impl.io.AbstractMessageParser.parse（AbstractMessageParser.java:261） at org.apache.http.impl.DefaultBHttpClientConnection.receiveResponseHeader（DefaultBHttpClientConnection.java:165）在org.apache.http.impl.conn.CPoolProxy.receiveResponseHeader（CPoolProxy.java:167） at org.apache.http.protocol.HttpRequestExecutor.doReceiveResponse（HttpRequestExecutor.java:272）在org.apache.http.protocol.HttpRequestExecutor.execute（HttpRequestExecutor.java:124）在org.apache.http.impl.execchain.MainClientExec.execute（MainClientExec.java:271）在org.apache.http.impl.execchain.ProtocolExec.execute（ProtocolExec.java:184）在org.apache.http.impl.execchain.RetryExec.execute（RetryExec.java:88）在org.apache.http.impl.execchain.RedirectExec.execute（RedirectExec.java:110）在org.apache.http.impl.client.InternalHttpClient.doExecute（InternalHttpClient.java:184）在org.apache.http.impl.client.CloseableHttpClient.execute（CloseableHttpClient.java:82）在org.apache.http.impl.client.CloseableHttpClient.execute（CloseableHttpClient.java:107）在com.ibm.indo.serviceImpl.GenericServiceImpl.checkDomRegNew（GenericServiceImpl.java:233）在com.ibm.indo.controller.ReportsController.checkDomRegNew（ReportsController.java:45） at sun.reflect.NativeMethodAccessorImpl.invoke0（Native Method） at sun.reflect.NativeMethodAccessorImpl.invoke（NativeMethodAccessorImpl.java:57） at sun.reflect.DelegatingMethodAccessorImpl.invoke（DelegatingMethodAccessorImpl.java:43） at java.lang.reflect.Method.invoke（Method.java:606）在org.springframework.web.method.support.InvocableHandlerMethod.doInvoke（InvocableHandlerMethod.java:221）在org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest（InvocableHandlerMethod.java:137）在org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle（ServletInvocableHandlerMethod.java:110）在org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod（RequestMappingHandlerAdapter.java:776）在org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal（RequestMappingHandlerAdapter.java:705）在org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle（AbstractHandlerMethodAdapter.java:85）在org.springframework.web.servlet.DispatcherServlet.doDispatch（DispatcherServlet.java:959）在org.springframework.web.servlet.DispatcherServlet.doService（DispatcherServlet.java:893）在org.springframework.web.servlet.FrameworkServlet.processRequest（FrameworkServlet.java:967）在org.springframework.web.servlet.FrameworkServlet.doPost（FrameworkServlet.java:869）在javax.servlet.http.HttpServlet.service（HttpServlet.java:754）在org.springframework.web.servlet.FrameworkServlet.service（FrameworkServlet.java:843）在javax.servlet.http.HttpServlet.service（HttpServlet.java:847）在org.apache.catalina.core.ApplicationFilterChain.internalDoFilter（ApplicationFilterChain.java:329）在org.apache.catalina.core.ApplicationFilterChain.doFilter（ApplicationFilterChain.java:248）在org.apache.catalina.core.StandardWrapperValve.invoke（StandardWrapperValve.java:275） at org.apache.catalina.core.StandardContextValve.invoke（StandardContextValve.java:161） at org.jboss.as.web.security.SecurityContextAssociationValve.invoke（SecurityContextAssociationValve.java:153）在org.apache.catalina.core.StandardHostValve.invoke（StandardHostValve.java:155） at org.apache.catalina.valves.ErrorReportValve.invoke（ErrorReportValve.java:102）在org.apache.catalina.core.StandardEngineValve.invoke（StandardEngineValve.java:109）在org.apache.catalina.connector.CoyoteAdapter.service（CoyoteAdapter.java:368）在org.apache.coyote.http11.Http11Processor.process（Http11Processor.java:877）在org.apache.coyote.http11.Http11Protocol $ Http11ConnectionHandler.process（Http11Protocol.java:671）在org.apache.tomcat.util.net.JIoEndpoint $ Worker.run（JIoEndpoint.java:930）在java.lang.Thread.run（Thread.java:745）

Answer 1

您确定您的https服务器能够顺利处理200个连接吗？我觉得，问题不在于您的httpsClient代码。服务器可能因为负载而拒绝接受少量请求？

Answer 2

如下面的Exception显然httpclient无法建立套接字连接。 httpclient尝试建立连接，但在预先定义的连接建立时间内，它无法连接。

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

请检查

使用Apache HttpClient，why isn't my connection timeout working?

http://brian.olore.net/wp/2009/08/apache-httpclient-timeout/

许多请求的httpclient超时

2 个答案: