Websocket HandshakeRequest throwing ClasscastException

Question

我有一个Grails 2.5应用程序，我正在为它添加websocket支持。websocket是使用这个博客作为指南添加的:http://caseyscarborough.com/blog/2014/12/07/using-websockets-in-grails/当从头开始创建grails应用程序时，集成工作正常，但是当我尝试在应用程序中集成时，它抛出这个stacktrace

| Error java.lang.ClassCastException: java.util.ArrayList cannot be
cast to [Ljava.lang.Object; | Error     at
org.apache.tomcat.websocket.server.WsHandshakeRequest.<init>(WsHandshakeRequest.java:73)
| Error     at
org.apache.tomcat.websocket.server.UpgradeUtil.doUpgrade(UpgradeUtil.java:149)
| Error     at
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:77)
| Error     at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
| Error     at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
| Error     at
org.codehaus.groovy.grails.web.mapping.filter.UrlMappingsFilter.processFilterChain(UrlMappingsFilter.java:440)
| Error     at
org.codehaus.groovy.grails.web.mapping.filter.UrlMappingsFilter.doFilterInternal(UrlMappingsFilter.java:241)
| Error     at
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
| Error     at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
| Error     at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
| Error     at
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:369)
| Error     at
org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:109)
| Error     at
org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:83)
| Error     at
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:381)
| Error     at
org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:97)
| Error     at
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:381)
| Error     at
org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:78)
| Error     at
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:381)
| Error     at
org.springframework.security.web.authentication.rememberme.RememberMeAuthenticationFilter.doFilter(RememberMeAuthenticationFilter.java:119)
| Error     at
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:381)
| Error     at
org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:54)
| Error     at
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:381)
| Error     at
org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:187)
| Error     at
com.application.CustomAuthFilter.super$3$doFilter(CustomAuthFilter.groovy)
| Error     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native
Method) | Error     at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
| Error     at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
| Error     at java.lang.reflect.Method.invoke(Method.java:497) | Error
    at
org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:90)
| Error     at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:324)
| Error     at
groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1207) |
Error   at
groovy.lang.ExpandoMetaClass.invokeMethod(ExpandoMetaClass.java:1121)
| Error     at
org.codehaus.groovy.runtime.ScriptBytecodeAdapter.invokeMethodOnSuperN(ScriptBytecodeAdapter.java:130)
| Error     at
com.application.CustomAuthFilter.doFilter(CustomAuthFilter.groovy:368)
| Error     at
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:381)
| Error     at
org.springframework.security.web.authentication.preauth.AbstractPreAuthenticatedProcessingFilter.doFilter(AbstractPreAuthenticatedProcessingFilter.java:89)
| Error     at
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:381)
| Error     at
org.codehaus.groovy.grails.plugins.springsecurity.MutableLogoutFilter.doFilter(MutableLogoutFilter.java:79)
| Error     at
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:381)
| Error     at
org.springframework.security.saml.SAMLLogoutProcessingFilter.processLogout(SAMLLogoutProcessingFilter.java:169)
| Error     at
org.springframework.security.saml.SAMLLogoutProcessingFilter.doFilter(SAMLLogoutProcessingFilter.java:93)
| Error     at
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:381)
| Error     at
org.springframework.security.saml.SAMLLogoutFilter.processLogout(SAMLLogoutFilter.java:157)
| Error     at
org.springframework.security.saml.SAMLLogoutFilter.doFilter(SAMLLogoutFilter.java:103)
| Error     at
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:381)
| Error     at
org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:187)
| Error     at
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:381)
| Error     at
org.springframework.security.saml.metadata.MetadataDisplayFilter.doFilter(MetadataDisplayFilter.java:83)
| Error     at
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:381)
| Error     at
org.springframework.security.saml.SAMLEntryPoint.doFilter(SAMLEntryPoint.java:102)
| Error     at
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:381)
| Error     at
org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:79)
| Error     at
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:381)
| Error     at
org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:168)
| Error     at
org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:344)
| Error     at
org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:261)
| Error     at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
| Error     at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
| Error     at
org.codehaus.groovy.grails.web.servlet.mvc.GrailsWebRequestFilter.doFilterInternal(GrailsWebRequestFilter.java:69)
| Error     at
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
| Error     at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
| Error     at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
| Error     at
org.codehaus.groovy.grails.web.filters.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:67)
| Error     at
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
| Error     at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
| Error     at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
| Error     at
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:230)
| Error     at
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:196)
| Error     at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
| Error     at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
| Error     at
org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
| Error     at
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
| Error     at
org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:344)
| Error     at
org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:261)
| Error     at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
| Error     at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
| Error     at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
| Error     at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
| Error     at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
| Error     at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
| Error     at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
| Error     at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
| Error     at
org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1040)
| Error     at
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:607)
| Error     at
org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:313)
| Error     at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
| Error     at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
| Error     at java.lang.Thread.run(Thread.java:745) 
null

如能帮助我诊断这个问题，我将不胜感激。提前谢谢。

更新:如果我把使websocket连接在spring-security之外的控制器的url，我不再得到这个错误，连接正在成功地进行。

Answer 1

我在rob Winch的帮助下解决了这个问题。当您说某些东西正在重写HttpServletRequest对象时，您向我指出了正确的方向。事实证明，一些自定义groovy代码通过使用以下groovy符号[str]向请求对象添加参数。这实际上是Groovy中的java.util.ArrayList，而不是String[](数组)。这就是导致握手请求失败的原因。再次感谢你，Rob。