使用spring4+tomcat8，运行后，报错，提示 The extensi?报错

刚接触这个，使用spring4+tomcat8，运行后，报错，提示

2015-08-18 21:40:30,194[org.springframework.web.servlet.mvc.annotation.ResponseStatusExceptionResolver]-[DEBUG] Resolving exception from handler [org.springframework.web.socket.server.support.WebSocketHttpRequestHandler@59a6cc]: org.springframework.web.socket.server.HandshakeFailureException: Uncaught failure for request http://localhost:8080/spring4/myHandler; nested exception is java.lang.IllegalArgumentException: The extension [x-webkit-deflate-frame] is not supported

2015-08-18 21:40:30,195 [org.springframework.web.servlet.mvc.support.DefaultHandlerExceptionResolver]-[DEBUG] Resolving exception from handler [org.springframework.web.socket.server.support.WebSocketHttpRequestHandler@59a6cc]: org.springframework.web.socket.server.HandshakeFailureException: Uncaught failure for request http://localhost:8080/spring4/myHandler; nested exception is java.lang.IllegalArgumentException: The extension [x-webkit-deflate-frame] is not supported
2015-08-18 21:40:30,196 [org.springframework.web.servlet.DispatcherServlet]-[DEBUG] Could not complete request
org.springframework.web.socket.server.HandshakeFailureException: Uncaught failure for request http://localhost:8080/spring4/myHandler; nested exception is java.lang.IllegalArgumentException: The extension [x-webkit-deflate-frame] is not supported
at org.springframework.web.socket.server.support.WebSocketHttpRequestHandler.handleRequest(WebSocketHttpRequestHandler.java:128)
at org.springframework.web.servlet.mvc.HttpRequestHandlerAdapter.handle(HttpRequestHandlerAdapter.java:51)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:938)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:870)
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:622)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:837)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)
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.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:502)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:617)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:518)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1091)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:668)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1527)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1484)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)

web.socket

看起来你的浏览器不支持，导致spring的这个扩展也报错了

我试过多个浏览器都还是一样

<spanstyle="font-family:'MicrosoftYaHei',Verdana,sans-serif,宋体;font-size:14px;line-height:22px;background-color:#FFFFFF;">org.springframework.web.socket.server.HandshakeFailureException:Uncaughtfailureforrequesthttp://localhost:8080/spring4/myHandler;nestedexceptionisjava.lang.IllegalArgumentException:Theextension[x-webkit-deflate-frame]isnotsupported

<spanstyle="font-family:'MicrosoftYaHei',Verdana,sans-serif,宋体;font-size:14px;line-height:22px;background-color:#FFFFFF;">

<spanstyle="font-family:'MicrosoftYaHei',Verdana,sans-serif,宋体;font-size:14px;line-height:22px;background-color:#FFFFFF;"> 注意这个估计是websocket的问题 <spanstyle="font-family:'MicrosoftYaHei',Verdana,sans-serif,宋体;font-size:14px;line-height:22px;background-color:#FFFFFF;">spring4/myHandler这个是你自己写的吧问题在这

<divclass='ref'>

引用来自“苏大泉”的评论

<spanstyle="font-family:'MicrosoftYaHei',Verdana,sans-serif,宋体;font-size:14px;line-height:22px;background-color:#FFFFFF;">

<divclass='ref'>

引用来自“xfeep”的评论

这个说明浏览器比较旧（估计是safari，至少safari6就是这样，safari8不知道有无此问题），对于websocket压缩还是用的很老的非规范的扩展“x-webkit-deflate-frame”，新的firefox，chrome都不会发这个扩展头信息，而是发送草案中规范的“permessage-deflate” 。但是另外spring4对于这个非规范的老扩展兼容也不太好（其实就是bug），按理应该忽略这个扩展，让tomcat和浏览器进行非压缩的websocket通讯即可。<spanstyle="font-size:13.3333330154419px;">spring4看起来比较矫情，它采取了抛异常，这是不合理的。而tomcat8自带的examples中websocket的例子对于“<spanstyle="font-size:13.3333330154419px;">x-webkit-deflate-frame”不会出问题，因为tomcat8对于<spanstyle="font-size:13.3333330154419px;">x-webkit-deflate-frame是采取忽略的态度，不回发压缩扩展协商成功的头，即表明采用非压缩方式传输，这样就没有问题了。关键是应该怎么解决这个问题呢？spring4+tomcat8，safari8也是同样的问题。
直接用tomcat8（比如8.0.24）的websocekt肯定可以和safari通讯的，而且也不复杂；如果一定要用spring，那么在upgradeStrategy上面做些事情应该是可以的，比如用TomcatRequestUpgradeStrategy试试。因为本人不用这些，所以没有时间去尝试，但原理是确是可行的。可以使用自定义Interceptor解决这个问题。比如这样：
registry.addHandler(systemWebSocketHandler(),"/webSocketServer").addInterceptors(newHandshakeInterceptor(){

         @Override
         publicbooleanbeforeHandshake(ServerHttpRequestarg0,ServerHttpResponsearg1,WebSocketHandlerarg2,Map<String,Object>arg3)throwsException{
            //
            if(arg0.getHeaders().containsKey("Sec-WebSocket-Extensions")){
               arg0.getHeaders().set("Sec-WebSocket-Extensions","permessage-deflate");
            }
            returntrue;
         }

         @Override
         publicvoidafterHandshake(ServerHttpRequestarg0,ServerHttpResponsearg1,WebSocketHandlerarg2,Exceptionarg3){
            //TODOAuto-generatedmethodstub

         }
      });
<divclass='ref'>

引用来自“钱学超”的评论

可以使用自定义Interceptor解决这个问题。比如这样：
registry.addHandler(systemWebSocketHandler(),"/webSocketServer").addInterceptors(newHandshakeInterceptor(){

         @Override
         publicbooleanbeforeHandshake(ServerHttpRequestarg0,ServerHttpResponsearg1,WebSocketHandlerarg2,Map<String,Object>arg3)throwsException{
            //
            if(arg0.getHeaders().containsKey("Sec-WebSocket-Extensions")){
               arg0.getHeaders().set("Sec-WebSocket-Extensions","permessage-deflate");
            }
            returntrue;
         }

         @Override
         publicvoidafterHandshake(ServerHttpRequestarg0,ServerHttpResponsearg1,WebSocketHandlerarg2,Exceptionarg3){
            //TODOAuto-generatedmethodstub

         }
      });

使用spring4+tomcat8，运行后，报错，提示 The extensi?报错

引用来自“苏大泉”的评论

引用来自“xfeep”的评论

引用来自“钱学超”的评论

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