I had a similar error calling RequestDispatcher.forward from a servlet
and traced it back. I ended up replacing the servlet.jar
which came with cocoon by the servlet.jar from Tomcat. Works fine.
That was with Tomcat 3.2.1 and Cocoon2.0rc2.
...Peter
Gasper writes:
> Hello
>
> I'm building a site using cocoon 2.0 and jsp's for dynamic content In my jsp
> I'm trying to forward to a page using a simple <jsp:forward> tag but this
> causes an error below. I'm using tomcat 3.2.3
>
> Does anybody know a solution?
> Is this a bug?
>
> Thanks
>
> Gasper
>
> The error:
>
> org.apache.cocoon.ProcessingException: ServletException in
> JspGenerator.generate(): java.lang.ClassCastException:
> org.apache.cocoon.components.jsp.JSPEngineImpl$MyServletRequest
> at org.apache.cocoon.generation.JspGenerator.generate(JspGenerator.java:87)
> at
> org.apache.cocoon.components.pipeline.CachingEventPipeline.process(CachingEv
> entPipeline.java:210)
> at
> org.apache.cocoon.components.pipeline.CachingStreamPipeline.process(CachingS
> treamPipeline.java:359)
> at
> org.apache.cocoon.www.sitemap_xmap.wildcardMatchN40058D(sitemap_xmap.java:90
> 80)
> at org.apache.cocoon.www.sitemap_xmap.process(sitemap_xmap.java:3026)
> at org.apache.cocoon.www.sitemap_xmap.process(sitemap_xmap.java:2500)
> at org.apache.cocoon.sitemap.Handler.process(Handler.java:163)
> at org.apache.cocoon.sitemap.Manager.invoke(Manager.java:114)
> at org.apache.cocoon.Cocoon.process(Cocoon.java:514)
> at org.apache.cocoon.servlet.CocoonServlet.service(CocoonServlet.java:664)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
> at org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java:405)
> at org.apache.tomcat.core.Handler.service(Handler.java:287)
> at org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372)
> at
> org.apache.tomcat.core.ContextManager.internalService(ContextManager.java:81
> 2)
> at org.apache.tomcat.core.ContextManager.service(ContextManager.java:758)
> at
> org.apache.tomcat.service.http.HttpConnectionHandler.processConnection(HttpC
> onnectionHandler.java:213)
> at
> org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java:416)
> at
> org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:501)
> at java.lang.Thread.run(Unknown Source)
> java.lang.ClassCastException:
> org.apache.cocoon.components.jsp.JSPEngineImpl$MyServletRequest
> at
> org.apache.tomcat.facade.RequestDispatcherImpl.doForward(RequestDispatcherIm
> pl.java:172)
> at
> org.apache.tomcat.facade.RequestDispatcherImpl.forward(RequestDispatcherImpl
> .java:162)
> at
> org.apache.jasper.runtime.PageContextImpl.forward(PageContextImpl.java:421)
> at
> admin._0002fadmin_0002fsumniki_0002ejspsumniki_jsp_3._jspService(_0002fadmin
> _0002fsumniki_0002ejspsumniki_jsp_3.java:72)
> at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:119)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
> at
> org.apache.jasper.servlet.JspServlet$JspCountedServlet.service(JspServlet.ja
> va:130)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
> at
> org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspServlet.ja
> va:282)
> at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:429)
> at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:500)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
> at
> org.apache.cocoon.components.jsp.JSPEngineImpl.executeJSP(JSPEngineImpl.java
> :107)
> at org.apache.cocoon.generation.JspGenerator.generate(JspGenerator.java:74)
> at
> org.apache.cocoon.components.pipeline.CachingEventPipeline.process(CachingEv
> entPipeline.java:210)
> at
> org.apache.cocoon.components.pipeline.CachingStreamPipeline.process(CachingS
> treamPipeline.java:359)
> at
> org.apache.cocoon.www.sitemap_xmap.wildcardMatchN40058D(sitemap_xmap.java:90
> 80)
> at org.apache.cocoon.www.sitemap_xmap.process(sitemap_xmap.java:3026)
> at org.apache.cocoon.www.sitemap_xmap.process(sitemap_xmap.java:2500)
> at org.apache.cocoon.sitemap.Handler.process(Handler.java:163)
> at org.apache.cocoon.sitemap.Manager.invoke(Manager.java:114)
> at org.apache.cocoon.Cocoon.process(Cocoon.java:514)
> at org.apache.cocoon.servlet.CocoonServlet.service(CocoonServlet.java:664)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
> at org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java:405)
> at org.apache.tomcat.core.Handler.service(Handler.java:287)
> at org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372)
> at
> org.apache.tomcat.core.ContextManager.internalService(ContextManager.java:81
> 2)
> at org.apache.tomcat.core.ContextManager.service(ContextManager.java:758)
> at
> org.apache.tomcat.service.http.HttpConnectionHandler.processConnection(HttpC
> onnectionHandler.java:213)
> at
> org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java:416)
> at
> org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:501)
> at java.lang.Thread.run(Unknown Source)
>
>
> Original exception : java.lang.ClassCastException:
> org.apache.cocoon.components.jsp.JSPEngineImpl$MyServletRequest
> at
> org.apache.tomcat.facade.RequestDispatcherImpl.doForward(RequestDispatcherIm
> pl.java:172)
> at
> org.apache.tomcat.facade.RequestDispatcherImpl.forward(RequestDispatcherImpl
> .java:162)
> at
> org.apache.jasper.runtime.PageContextImpl.forward(PageContextImpl.java:421)
> at
> admin._0002fadmin_0002fsumniki_0002ejspsumniki_jsp_3._jspService(_0002fadmin
> _0002fsumniki_0002ejspsumniki_jsp_3.java:72)
> at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:119)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
> at
> org.apache.jasper.servlet.JspServlet$JspCountedServlet.service(JspServlet.ja
> va:130)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
> at
> org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspServlet.ja
> va:282)
> at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:429)
> at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:500)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
> at
> org.apache.cocoon.components.jsp.JSPEngineImpl.executeJSP(JSPEngineImpl.java
> :107)
> at org.apache.cocoon.generation.JspGenerator.generate(JspGenerator.java:74)
> at
> org.apache.cocoon.components.pipeline.CachingEventPipeline.process(CachingEv
> entPipeline.java:210)
> at
> org.apache.cocoon.components.pipeline.CachingStreamPipeline.process(CachingS
> treamPipeline.java:359)
> at
> org.apache.cocoon.www.sitemap_xmap.wildcardMatchN40058D(sitemap_xmap.java:90
> 80)
> at org.apache.cocoon.www.sitemap_xmap.process(sitemap_xmap.java:3026)
> at org.apache.cocoon.www.sitemap_xmap.process(sitemap_xmap.java:2500)
> at org.apache.cocoon.sitemap.Handler.process(Handler.java:163)
> at org.apache.cocoon.sitemap.Manager.invoke(Manager.java:114)
> at org.apache.cocoon.Cocoon.process(Cocoon.java:514)
> at org.apache.cocoon.servlet.CocoonServlet.service(CocoonServlet.java:664)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
> at org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java:405)
> at org.apache.tomcat.core.Handler.service(Handler.java:287)
> at org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372)
> at
> org.apache.tomcat.core.ContextManager.internalService(ContextManager.java:81
> 2)
> at org.apache.tomcat.core.ContextManager.service(ContextManager.java:758)
> at
> org.apache.tomcat.service.http.HttpConnectionHandler.processConnection(HttpC
> onnectionHandler.java:213)
> at
> org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java:416)
> at
> org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:501)
> at java.lang.Thread.run(Unknown Source)
>
>
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