Question

我有一个简单的过滤器类，它使用Apache HttpClient连接到同一个tomcat实例中的不同应用程序。最近为了提高Tomcat服务器的性能，我们在tomcat中添加了一些自定义JVM参数，其参数如下：

export CATALINA_OPTS="$CATALINA_OPTS -javaagent:/app/wily/Agent.jar -Dcom.wily.introscope.agentProfile=/app/wily/IntroscopeAgent_IAASTomcat.profile -Dcom.wily.introscope.agent.agentName=iaas_dev_tomcat_instance"

添加此属性后，Apache HttpClient代码不起作用，并抛出异常堆栈跟踪。

java.lang.IllegalArgumentException: Socket not created by this factory.
    at org.apache.http.conn.scheme.PlainSocketFactory.isSecure(PlainSocketFactory.java:134)
    at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:136)
    at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:164)
    at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:119)
    at org.apache.http.impl.client.DefaultClientRequestDirector.execute(DefaultClientRequestDirector.java:309)
    at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:501)
    at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:456)
    at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:422)
    at com.vzw.issi.filters.UserValidationFilter.doFilter(UserValidationFilter.java:101)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:205)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:947)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1009)
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
    at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
    at java.lang.Thread.run(Thread.java:662)

以下是我的过滤器代码。

httpClient = new DefaultHttpClient();
                HttpPost httpPost = new HttpPost(securityServiceURL);
                // Getting the SM Header
                httpPost.setHeader(StatusReportConstants.SM_USER, httpServletRequest.getHeader(StatusReportConstants.SM_USER));
                List<NameValuePair> urlParameters = new ArrayList<NameValuePair>();
                urlParameters.add(new BasicNameValuePair(StatusReportConstants.SOURCE_APP_NAME, StatusReportConstants.APP_DISPLAY_NAME));
                urlParameters.add(new BasicNameValuePair(StatusReportConstants.SUB_SERVICE_NAME, StatusReportConstants.SERVICE_VALIDATE_USER));
                httpPost.setEntity(new UrlEncodedFormEntity(urlParameters));
                HttpResponse httpResponse = httpClient.execute(httpPost);
                HttpEntity httpEntity = httpResponse.getEntity();
                String jsonString = null; 
                if (null != httpEntity) {
                    jsonString = EntityUtils.toString(httpEntity);
                }
                HttpServletResponse httpServletResponse = (HttpServletResponse)response;

我只在http上进行通信。当我评论JVM参数时，这个httpclient代码工作正常。

为什么会这样？

Answer 1

显然，代理检测java.net.Socket类会混淆旧版本的HttpClient连接管理代码。如果将HttpClient升级到版本4.2.6或4.3.1，则问题应该消失。

Apache HttpClient在使用Wily代理时抛出异常

1 个答案: