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Using Facelets as <error-page><location> causes IllegalStateException: getWriter() has already been called for this response
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Solved jsf-2exceptionfaceletsweb.xmlomnifaces
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1

1

I'm trying to setup the Omniface's FaceExceptionFilter on my Glassfish 4.0 server, using Mojarra 2.2.8, Primefaces 4.0 and Omnifaces 1.8.1.

The filters and error pages in web.xml are defined as follow:

<filter>
    <filter-name>facesExceptionFilter</filter-name>
    <filter-class>org.omnifaces.filter.FacesExceptionFilter</filter-class>
</filter>
<filter-mapping>
    <filter-name>facesExceptionFilter</filter-name>
    <servlet-name>Faces Servlet</servlet-name>
</filter-mapping>
<filter>
    <filter-name>PrimeFaces FileUpload Filter</filter-name>
    <filter-class>org.primefaces.webapp.filter.FileUploadFilter         </filter-class>
</filter>
<filter-mapping>
    <filter-name>PrimeFaces FileUpload Filter</filter-name>
    <servlet-name>Faces Servlet</servlet-name>
</filter-mapping>
<error-page>
    <error-code>500</error-code>
    <location>/errors/500.xhtml</location>
</error-page>
<error-page>
    <error-code>404</error-code>
    <location>/errors/404.xhtml</location>
</error-page>
<error-page>
    <exception-type>javax.faces.application.ViewExpiredException</exception-type>
    <location>/errors/expired.xhtml</location>
</error-page>
<error-page>
    <exception-type>java.lang.Throwable</exception-type>
    <location>/errors/throwable.xhtml</location>
</error-page>

I try to trigger the 404 exception by going to an non-existing page. This result in the following exception:

Severe:   PWC6117: File "/home/cghislai/Misc/dev/kountos/repo/kountos/jkountos-web/target/tagific-1.0-SNAPSHOT/feesd.jsp" not found
Warning:   Servlet.service() for servlet default threw exception
java.lang.IllegalStateException: getWriter() has already been called for this response
    at org.apache.catalina.connector.Response.getOutputStream(Response.java:746)
    at org.apache.catalina.connector.ResponseFacade.getOutputStream(ResponseFacade.java:206)
    at javax.servlet.ServletResponseWrapper.getOutputStream(ServletResponseWrapper.java:142)
    at org.apache.catalina.servlets.DefaultServlet.serveResource(DefaultServlet.java:1033)
    at org.apache.catalina.servlets.DefaultServlet.doGet(DefaultServlet.java:518)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:687)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
    at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1682)
    at org.apache.catalina.core.ApplicationDispatcher.doInvoke(ApplicationDispatcher.java:875)
    at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:739)
    at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:695)
    at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:626)
    at org.apache.catalina.core.StandardHostValve.custom(StandardHostValve.java:492)
    at org.apache.catalina.core.StandardHostValve.dispatchToErrorPage(StandardHostValve.java:691)
    at org.apache.catalina.core.StandardHostValve.status(StandardHostValve.java:376)
    at org.apache.catalina.core.StandardHostValve.postInvoke(StandardHostValve.java:234)
    at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:359)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:260)
    at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:188)
    at org.glassfish.grizzly.http.server.HttpHandler.runService(HttpHandler.java:191)
    at org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:168)
    at org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:189)
    at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:119)
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:288)
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:206)
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:136)
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:114)
    at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:77)
    at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:838)
    at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:113)
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:115)
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access$100(WorkerThreadIOStrategy.java:55)
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:135)
    at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:564)
    at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:544)
    at java.lang.Thread.run(Thread.java:745)

Warning:   org.apache.catalina.core.StandardHostValve@a5ebfc0: Exception Processing ErrorPage[errorCode=404, location=/errors/404.xhtml]
java.lang.IllegalStateException: getWriter() has already been called for this response
    at org.apache.catalina.connector.Response.getOutputStream(Response.java:746)
    at org.apache.catalina.connector.ResponseFacade.getOutputStream(ResponseFacade.java:206)
    at javax.servlet.ServletResponseWrapper.getOutputStream(ServletResponseWrapper.java:142)
    at org.apache.catalina.servlets.DefaultServlet.serveResource(DefaultServlet.java:1033)
    at org.apache.catalina.servlets.DefaultServlet.doGet(DefaultServlet.java:518)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:687)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
    at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1682)
    at org.apache.catalina.core.ApplicationDispatcher.doInvoke(ApplicationDispatcher.java:875)
    at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:739)
    at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:695)
    at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:626)
    at org.apache.catalina.core.StandardHostValve.custom(StandardHostValve.java:492)
    at org.apache.catalina.core.StandardHostValve.dispatchToErrorPage(StandardHostValve.java:691)
    at org.apache.catalina.core.StandardHostValve.status(StandardHostValve.java:376)
    at org.apache.catalina.core.StandardHostValve.postInvoke(StandardHostValve.java:234)
    at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:359)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:260)
    at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:188)
    at org.glassfish.grizzly.http.server.HttpHandler.runService(HttpHandler.java:191)
    at org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:168)
    at org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:189)
    at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:119)
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:288)
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:206)
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:136)
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:114)
    at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:77)
    at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:838)
    at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:113)
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:115)
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access$100(WorkerThreadIOStrategy.java:55)
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:135)
    at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:564)
    at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:544)
    at java.lang.Thread.run(Thread.java:745)

I've checked any filter that could write to the response before the FacesExceptionFilter, and ended up disabling all my @WebFilters, but the error remains.

Thanks for any tip!

Lush answered 3/9, 2014 at 12:36 Comment(1)
FacesServlet was registered for *.jsf and the page I tried to access matched this filter. Adding .xhtml indeed fixed the error. Thanks! – Lush
M
2

If you're setting a JSF/Facelets page as <error-page><location>, then you need to make sure that the URL in <location> matches the <url-pattern> of the FacesServlet. The stack trace indicates that the DefaultServlet is being invoked instead of FacesServlet, which means that the URL in <location> indeed doesn't match the <url-pattern> of FacesServlet.

It's recommended to map the FacesServlet directly on *.xhtml instead of e.g. *.jsf or /faces/*, so that you never need to fiddle with virtual URLs.

<servlet-mapping>
    <servlet-name>Faces Servlet</servlet-name>
    <url-pattern>*.xhtml</url-pattern>
</servlet-mapping>

See also:

Macintosh answered 3/9, 2014 at 13:4 Comment(0)

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