将Facelets用作<错误页面><位置>。导致IllegalStateException：此响应已调用getWriter（） [英] Using Facelets as <error-page><location> causes IllegalStateException: getWriter() has already been called for this response

问题描述

我正在尝试使用Mojarra 2.2.8，Primefaces 4.0和Omnifaces 1.8.1在我的Glassfish 4.0服务器上设置Omniface的FaceExceptionFilter。

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.

过滤器和web.xml中的错误页面定义如下：

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>

我尝试通过转到不存在的页面来触发404异常。结果导致以下异常：

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)

我已经在FacesExceptionFilter之前检查了任何可以写入响应的过滤器，并最终禁用了我所有的@WebFilters，但是错误仍然存​​在。

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.

感谢任何提示！

推荐答案

如果要将JSF / Facelets页面设置为< error-page>< ; location> ，那么您需要确保< location> 中的URL与< url- Fa的模式> cesServlet 。堆栈跟踪表明 DefaultServlet 而不是 FacesServlet 被调用，这意味着<$ c $中的URL c>< location> 确实与 FacesServlet < url-pattern> 不匹配$ c>。

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.

建议直接将 FacesServlet 映射到 *。xhtml 而不是例如 *。jsf 或 / faces / * ，因此您无需摆弄虚拟URL。

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>

另请参见：

• JSF Facelets ：有时我看到URL是.jsf，有时是.xhtml。为什么？



See also:

• JSF Facelets: Sometimes I see the URL is .jsf and sometimes .xhtml. Why?

这篇关于将Facelets用作&lt;错误页面&gt;&lt;位置&gt;。导致IllegalStateException：此响应已调用getWriter（）的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！