我得到了以下错误
#|2010-10-31T19:13:38.127+0530|SEVERE|glassfish|javax.enterprise.system.container.web|_ThreadID=15;_ThreadName=Thread-3;|StandardWrapperValve[Grizzly Cometd Servlet]: PWC1406: Servlet.service() for servlet Grizzly Cometd Servlet threw exception
java.lang.IllegalStateException: Make sure you have enabled Comet or make sure the Thread invoking that method is the same a the request Thread.
at com.sun.grizzly.comet.CometContext.addCometHandler(CometContext.java:263)
at com.sun.grizzly.cometd.servlet.CometdServlet.doPost(CometdServlet.java:159)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:754)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)
at org.apache.catalina.core.ApplicationFilterChain.servletService(ApplicationFilterChain.java:431)
at org.apache.catalina.core.StandardWrapperValve.preInvoke(StandardWrapperValve.java:462)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:139)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:186)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:719)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:657)
at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:96)
at com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:98)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:187)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:719)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:657)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:651)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:1030)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:142)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:719)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:657)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:651)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:1030)
at …Run Code Online (Sandbox Code Playgroud)