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https://issues.apache.org/jira/browse/MYFACES-2142?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12704180#action_12704180
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Leonardo Uribe commented on MYFACES-2142:
-----------------------------------------
The solution should fix the issue.
I think it is better make ResponseSwitch inherit from HttpServletResponse
(creating other class like HttpResponseSwitch) and cast on FacesContextImpl
constructor to use one or other. But I'm not found yet the part of the spec
that requires use ResponseSwitch, so it is better to put this issue on hold to
make a decision about this.
> 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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