当我们尝试在大气依赖的帮助下实现使用servlet时，我们遇到了一个问题 我们可以使用当前配置在本地运行，但是当我的应用程序部署到aws时，则推送servlet无法正常工作。 aws中的日志是 我的Aws服务器配置是Java 8与Tomcat 8版本2.1.3
运行Tomcat 8 Java 8的64位Amazon Linux 2016.03 v2.1.3 2016年3月2日 Java 1.8.0_91 Tomcat 8.0.35 Apache 2.2.31
05-Dec-2017 13:26:32.162 SEVERE [http-nio-8080-exec-9] org.apache.catalina.core.StandardWrapperValve.invoke Servlet.service() for servlet [Push Servlet] in context with path [] threw exception
java.lang.IllegalStateException: A filter or servlet of the current chain does not support asynchronous operations.
at org.apache.catalina.connector.Request.startAsync(Request.java:1621)
at org.apache.catalina.connector.RequestFacade.startAsync(RequestFacade.java:1037)
at javax.servlet.ServletRequestWrapper.startAsync(ServletRequestWrapper.java:398)
at org.atmosphere.cpr.AtmosphereRequestImpl.startAsync(AtmosphereRequestImpl.java:631)
at org.atmosphere.container.Servlet30CometSupport.suspend(Servlet30CometSupport.java:95)
at org.atmosphere.container.Servlet30CometSupport.service(Servlet30CometSupport.java:70)
at org.atmosphere.cpr.AtmosphereFramework.doCometSupport(AtmosphereFramework.java:2287)
at org.atmosphere.cpr.AtmosphereServlet.doPost(AtmosphereServlet.java:191)
at org.atmosphere.cpr.AtmosphereServlet.doGet(AtmosphereServlet.java:177)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
at org.jasig.cas.client.util.HttpServletRequestWrapperFilter.doFilter(HttpServletRequestWrapperFilter.java:62)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
at org.jasig.cas.client.validation.AbstractTicketValidationFilter.doFilter(AbstractTicketValidationFilter.java:196)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
at org.jasig.cas.client.authentication.AuthenticationFilter.doFilter(AuthenticationFilter.java:93)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
at org.jasig.cas.client.session.SingleSignOutFilter.doFilter(SingleSignOutFilter.java:65)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
at org.apache.catalina.valves.RemoteIpValve.invoke(RemoteIpValve.java:676)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:616)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:528)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1099)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:672)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1520)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1476)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
我们正在使用Primeface Primeface依赖
<dependency>
<groupId>org.primefaces</groupId>
<artifactId>primefaces</artifactId>
<version>5.3</version>
</dependency>
氛围依赖
<dependency>
<groupId>org.atmosphere</groupId>
<artifactId>atmosphere-runtime</artifactId>
<version>2.4.6</version>
</dependency>
在web.xml中推送servlet configration是
<servlet>
<servlet-name>Push Servlet</servlet-name>
<servlet-class>org.primefaces.push.PushServlet</servlet-class>
<init-param>
<param-name>org.atmosphere.cpr.broadcasterCacheClass</param-name>
<param-value>org.atmosphere.cache.UUIDBroadcasterCache</param-value>
</init-param>
<load-on-startup>0</load-on-startup>
<async-supported>true</async-supported>
</servlet>
<servlet-mapping>
<servlet-name>Push Servlet</servlet-name>
<url-pattern>/primepush/*</url-pattern>
</servlet-mapping>
答案 0 :(得分：1)
更改为假
webapps / ROOT / WEB-INF / web.xml
<filter>
<filter-name>ApplicationFilter</filter-name>
<filter-class>com.chomp.blurp.ApplicationFilter</filter-class>
<async-supported>true</async-supported>
</filter>
<filter-mapping>
<filter-name>ApplicationFilter</filter-name>
<url-pattern>/*</url-pattern>
<dispatcher>ERROR</dispatcher>
<dispatcher>FORWARD</dispatcher>
<dispatcher>INCLUDE</dispatcher>
<dispatcher>REQUEST</dispatcher>
</filter-mapping>
答案 1 :(得分：0)
我被修好了。它的原因是我弄错了
当我检查所有过滤器时，我发现了另一个过滤器元素<async-supported>true</async-supported>，该过滤器适用于推送servlet调用时。