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https://issues.apache.org/jira/browse/MYFACES-2142?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12704070#action_12704070
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Curtiss Howard commented on MYFACES-2142:
-----------------------------------------
Leonardo, can you try the patch I provided? It should fix the issue, which is
simply due to not unwrapping the ResponseSwitch.
> ClassCastException in JspViewHandlerImpl: ResponseSwitch !=
> HttpServletResponse
> -------------------------------------------------------------------------------
>
> Key: MYFACES-2142
> URL: https://issues.apache.org/jira/browse/MYFACES-2142
> Project: MyFaces Core
> Issue Type: Bug
> Components: JSR-314
> Reporter: Jan-Kees van Andel
> Attachments: MYFACES-2142.patch
>
>
> While running the latest myfaces2 source code with a test JSP page, I've
> encountered the following error.
> java.lang.ClassCastException:
> org.apache.myfaces.context.servlet.ResponseSwitch cannot be cast to
> javax.servlet.http.HttpServletResponse
> at
> org.apache.myfaces.application.jsp.JspViewHandlerImpl.buildView(JspViewHandlerImpl.java:487)
> at
> org.apache.myfaces.application.jsp.JspViewHandlerImpl.renderView(JspViewHandlerImpl.java:343)
> at
> org.apache.myfaces.lifecycle.RenderResponseExecutor.execute(RenderResponseExecutor.java:45)
> at
> org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:167)
> at
> javax.faces.webapp.FacesServlet._handleStandardRequest(FacesServlet.java:428)
> at javax.faces.webapp.FacesServlet.service(FacesServlet.java:182)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
> etc......
> As far as I can see, this is a bug, since there is an explicit cast to
> HttpServletResponse and the given parameter is of type ResponseSwitch, which
> is not a HttpServletResponse.
> It looks like a recent change...
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