SPRINGMVC Project Asynchronous error handling request Async support must is enabled on a servlets and for all filters involved in async

Next to GitHub on a project, Springmvc-chat. There are labels in general. This is the 0 configuration.

It can be hard for me, and the final integration into the project now looks a bit. Out the following error. Red part. The workaround is to add a sentence to the general configuration file in Web. XML, which is SPRINGMVC:
<async-supported>true</async-supported>
The position of this sentence must be put correctly, otherwise. Everything was in vain. As for configuring spring asynchronous support (in fact, configuring servlet async support), see the placement location.

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On May 16, 2014 4:30:59 pm org.apache.catalina.core.StandardWrapperValve invoke severity: Servlet.service () for Servlet [SPRINGMVC ] In the context with the path [/ZHDM] threw exception [Request processing failed; nested exception is JAVA.LANG.ILLEGALSTATEEXCEP Tion:async support must is enabled on a servlets and for all filters involved in Async request processing. This is do in Java code using the Servlet API or by adding ' <async-supported>true</async-supported> ' to serv Let and filter declarations in Web.]  With root Causejava.lang.IllegalStateException:Async support must is enabled on a servlets and for all filters involved in Async request Processing. This is do in Java code using the Servlet API or by adding ' <async-supported>true</async-supported> ' to serv Let and filter declarations in web.xml.at org.springframework.util.Assert.state (assert.java:385) at Org.springframework.web.context.request.async.StandardServletAsyncWebRequest.startAsync ( Standardservletasyncwebrequest. java:104) at Org.springframework.web.context.request.async.WebAsyncManager.startAsyncProcessing ( webasyncmanager.java:431) at Org.springframework.web.context.request.async.WebAsyncManager.startDeferredResultProcessing ( webasyncmanager.java:409) at Org.springframework.web.servlet.mvc.method.annotation.DeferredResultMethodReturnValueHandler.handleReturnValue ( DEFERREDRESULTMETHODRETURNVALUEHANDLER.JAVA:51) at Org.springframework.web.method.support.HandlerMethodReturnValueHandlerComposite.handleReturnValue ( HANDLERMETHODRETURNVALUEHANDLERCOMPOSITE.JAVA:71) at Org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle ( servletinvocablehandlermethod.java:122) at Org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod ( requestmappinghandleradapter.java:749) at Org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal ( requestmappinghandleradapter.java:690) at ORG.SPRINGFRAMEWORK.WEb.servlet.mvc.method.AbstractHandlerMethodAdapter.handle (abstracthandlermethodadapter.java:83) at Org.springframework.web.servlet.DispatcherServlet.doDispatch (dispatcherservlet.java:945) at Org.springframework.web.servlet.DispatcherServlet.doService (dispatcherservlet.java:876) at Org.springframework.web.servlet.FrameworkServlet.processRequest (frameworkservlet.java:961) at Org.springframework.web.servlet.FrameworkServlet.doGet (frameworkservlet.java:852) at Javax.servlet.http.HttpServlet.service (httpservlet.java:618) at Org.springframework.web.servlet.FrameworkServlet.service (frameworkservlet.java:837) at Javax.servlet.http.HttpServlet.service (httpservlet.java:725) at Org.apache.catalina.core.ApplicationFilterChain.internalDoFilter (applicationfilterchain.java:301) at Org.apache.catalina.core.ApplicationFilterChain.doFilter (applicationfilterchain.java:206) at Org.apache.tomcat.websocket.server.WsFilter.doFilter (wsfilter.java:52) at Org.apache.catalina.core.ApplicationFilterChain.internalDoFilter (Applicationfilterchain.java:239) at Org.apache.catalina.core.ApplicationFilterChain.doFilter ( applicationfilterchain.java:206) at Org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal ( characterencodingfilter.java:88) at Org.springframework.web.filter.OncePerRequestFilter.doFilter ( onceperrequestfilter.java:108) at Org.apache.catalina.core.ApplicationFilterChain.internalDoFilter ( applicationfilterchain.java:239) at Org.apache.catalina.core.ApplicationFilterChain.doFilter ( applicationfilterchain.java:206) at Org.apache.catalina.core.StandardWrapperValve.invoke ( standardwrappervalve.java:219) at Org.apache.catalina.core.StandardContextValve.invoke (Standardcontextvalve.java : 106) at Org.apache.catalina.authenticator.AuthenticatorBase.invoke (authenticatorbase.java:503) at Org.apache.catalina.core.StandardHostValve.invoke (standardhostvalve.java:136) at Org.apache.catalina.valves.ErrorReportValve.invoke (errorreportvalve.java:74) at Org.apache.catalina.valves.AbstractAccessLogValve.invoke (abstractaccesslogvalve.java:610) at Org.apache.catalina.core.StandardEngineValve.invoke (standardenginevalve.java:88) At Org.apache.catalina.connector.CoyoteAdapter.service (coyoteadapter.java:516) at Org.apache.coyote.http11.AbstractHttp11Processor.process (abstracthttp11processor.java:1015) at Org.apache.coyote.abstractprotocol$abstractconnectionhandler.process (abstractprotocol.java:652) at Org.apache.coyote.http11.http11aprprotocol$http11connectionhandler.process (http11aprprotocol.java:277) at Org.apache.tomcat.util.net.aprendpoint$socketprocessor.dorun (aprendpoint.java:2451) at Org.apache.tomcat.util.net.aprendpoint$socketprocessor.run (aprendpoint.java:2440) at Java.util.concurrent.ThreadPoolExecutor.runWorker (threadpoolexecutor.java:1145) at Java.util.concurrent.threadpoolexecutor$worker.run (threadpoolexecutor.java:615) at Java.lang.Thread.run ( thread.java:744)

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SPRINGMVC Project Asynchronous error handling request Async support must is enabled on a servlets and for all filters involved in async