面对tomcat 7.0.71上CometD的问题

使用Cometd3.0.1和Tomcat7.0.73以及长轮询获取以下错误。我们在tomcat 7.0.50中没有看到这个问题

来自CometD开发者

servlet.ServletRequestWrapper.getAsyncContext（ServletRequestWrapper.java:418） org.cometd.server.transport.AbstractStreamHttpTransport.process（AbstractStreamHttpTransport.java:88）

这是Comed在暂停投票后恢复长时间投票的地方，所以 调用getAsyncContext（）是完全合法的，Tomcat就是这么做的 抱怨。

有没有办法让Tomcat进行长时间轮询

Time: Fri Mar 24 2017 17:46:55 GMT+0530 (India Standard Time) Channel: null Reason: Error occured during CometD connect.
Failure Message: {"id":"4","successful":false,"channel":"/meta/connect","failure":{"reason":"error","exception":"Internal Server Error","httpCode":500,"connectionType":"long-polling","transport":{"readyState":4,"withCredentials":true,"responseText":"

HTTP Status 500 - java.lang.RuntimeException: java.lang.IllegalStateException: It is illegal to call this method if the current request is not in asynchronous mode (i.e. isAsyncStarted() returns false)
type Exception report

message java.lang.RuntimeException: java.lang.IllegalStateException: It is illegal to call this method if the current request is not in asynchronous mode (i.e. isAsyncStarted() returns false)

description The server encountered an internal error that prevented it from fulfilling this request.

exception

javax.servlet.ServletException: java.lang.RuntimeException: java.lang.IllegalStateException: It is illegal to call this method if the current request is not in asynchronous mode (i.e. isAsyncStarted() returns false)\n\tcom.googlecode.psiprobe.Tomcat70AgentValve.invoke(Tomcat70AgentValve.java:38)\n\torg.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)\n\torg.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:958)\n\torg.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:958)\n\torg.apache.catalina.connector.CoyoteAdapter.asyncDispatch(CoyoteAdapter.java:317)\n\torg.apache.coyote.http11.AbstractHttp11Processor.asyncDispatch(AbstractHttp11Processor.java:1681)\n\torg.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:616)\n\torg.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1756)\n\torg.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1715)\n\tjava.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)\n\tjava.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)\n\torg.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)\n\tjava.lang.Thread.run(Thread.java:745)\n
root cause

java.lang.RuntimeException: java.lang.IllegalStateException: It is illegal to call this method if the current request is not in asynchronous mode (i.e. isAsyncStarted() returns false)\n\tcom.googlecode.psiprobe.Tomcat70AgentValve.invoke(Tomcat70AgentValve.java:38)\n\torg.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)\n\torg.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:958)\n\torg.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:958)\n\torg.apache.catalina.connector.CoyoteAdapter.asyncDispatch(CoyoteAdapter.java:317)\n\torg.apache.coyote.http11.AbstractHttp11Processor.asyncDispatch(AbstractHttp11Processor.java:1681)\n\torg.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:616)\n\torg.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1756)\n\torg.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1715)\n\tjava.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)\n\tjava.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)\n\torg.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)\n\tjava.lang.Thread.run(Thread.java:745)\n
root cause

java.lang.IllegalStateException: It is illegal to call this method if the current request is not in asynchronous mode (i.e. isAsyncStarted() returns false)\n\torg.apache.catalina.connector.Request.getAsyncContext(Request.java:1740)\n\torg.apache.catalina.connector.RequestFacade.getAsyncContext(RequestFacade.java:1047)\n\tjavax.servlet.ServletRequestWrapper.getAsyncContext(ServletRequestWrapper.java:418)\n\torg.cometd.server.transport.AbstractStreamHttpTransport.process(AbstractStreamHttpTransport.java:88)\n\torg.cometd.server.transport.AbstractStreamHttpTransport.handle(AbstractStreamHttpTransport.java:61)\n\torg.cometd.server.CometDServlet.service(CometDServlet.java:103)\n\tjavax.servlet.http.HttpServlet.service(HttpServlet.java:731)\n
note The full stack trace of the root cause is available in the Apache Tomcat/7.0.73 logs.

Apache Tomcat/7.0.73

","status":500,"statusText":"Internal Server Error"},"message":{"channel":"/meta/connect","connectionType":"long-polling","id":"4","clientId":"a10paginvut3d5yfwc3azxjvpa","ext":{"ack":-1}}}}

根据，此问题已在中解决