当前链的过滤器或 servlet 不支持推送 servlet 中的异步操作
A filter or servlet of the current chain does not support asynchronous operations in push servlet
当我们尝试借助大气依赖实现 use servlet 时遇到问题
我们可以 运行 在本地使用当前配置，但是当我的应用程序部署到 aws 时，推送 servlet 不工作。
aws 中的日志是
我的 Aws 服务器配置是 Java 8 和 Tomcat 8 版本 2.1.3
64 位亚马逊 Linux 2016.03 v2.1.3 运行ning Tomcat 8 Java 8
2016.03.2
Java1.8.0_91
Tomcat 8.0.35
阿帕奇 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 依赖项
<dependency>
<groupId>org.primefaces</groupId>
<artifactId>primefaces</artifactId>
<version>5.3</version>
</dependency>
气氛依赖
<dependency>
<groupId>org.atmosphere</groupId>
<artifactId>atmosphere-runtime</artifactId>
<version>2.4.6</version>
</dependency>
web.xml 中的推送 servlet 配置是
<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>
我修好了。这是我误会的原因
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>，该过滤器在推送 servlet 调用时适用。
更改为 false
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>
当我们尝试借助大气依赖实现 use servlet 时遇到问题 我们可以 运行 在本地使用当前配置，但是当我的应用程序部署到 aws 时，推送 servlet 不工作。 aws 中的日志是 我的 Aws 服务器配置是 Java 8 和 Tomcat 8 版本 2.1.3
64 位亚马逊 Linux 2016.03 v2.1.3 运行ning Tomcat 8 Java 8 2016.03.2 Java1.8.0_91 Tomcat 8.0.35 阿帕奇 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 依赖项
<dependency>
<groupId>org.primefaces</groupId>
<artifactId>primefaces</artifactId>
<version>5.3</version>
</dependency>
气氛依赖
<dependency>
<groupId>org.atmosphere</groupId>
<artifactId>atmosphere-runtime</artifactId>
<version>2.4.6</version>
</dependency>
web.xml 中的推送 servlet 配置是
<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>
我修好了。这是我误会的原因
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>，该过滤器在推送 servlet 调用时适用。
更改为 false
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>