Error in Including resources in JSP

[Allan Kamau]

Hi all, I get errors when I include a cocoon processed .xml file in .jsp file in Tomcat-3.2.1 The "resource.xml" calls an xml generating servlet that I have written. If I call the "resource.xml?month=5&year=2001" on my browser it works just fine. However when I use I get "java.lang.IllegalStateException writer is already being used for this request" if I use <% RequestDispatcher rd=applicaltion.getRequestDispatch("absolutePathTo.xml?month=5"); rd.include(request.response); %> On requesting the .jsp I get an "java.lang.NullPointerException" Now I think the problem is that the .xml being generated by cocoon is tring to obtain a new PrintWriter object. If this is the case how can I solve it. I have tried passing the "out" object from jsp to the servlet including in the "resource.xml" by using 'request.setAttribute("out",out)' but I am unable to obtain it in the servlet using '... out=request.getAttribute("out")' Below is the code for the "resource.xml?month=5&year=2001" "http://localhost:8080/projsp/XML/jsp/monthDays.jsp?month="+request.getParameter("month")+""+request.getParameter("year") Below it the direct error output I get if I use the "" from the .jsp Cocoon 1.8.2 Error found handling the request. java.lang.IllegalStateException: Writer is already being used for this request at org.apache.tomcat.facade.HttpServletResponseFacade.getOutputStream(HttpServletResponseFacade.java:158) at org.apache.cocoon.response.HttpServletResponseFacade.getOutputStream(HttpServletResponseFacade.java:85) at org.apache.cocoon.Engine.handle(Engine.java:483) at org.apache.cocoon.Cocoon.service(Cocoon.java:183) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java:404) at org.apache.tomcat.core.Handler.service(Handler.java:286) at org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372) at org.apache.tomcat.facade.RequestDispatcherImpl.include(RequestDispatcherImpl.java:345) at org.apache.jasper.runtime.PageContextImpl.include(PageContextImpl.java:414) at diary.jsp._0002fdiary_0002fjsp_0002fdefault_00038_0002ejspdefault8_jsp_13._jspService(_0002fdiary_0002fjsp_0002fdefault_00038_0002ejspdefault8_jsp_13.java:65) 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$JspServletWrapper.service(JspServlet.java:177) at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:318) at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:391) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java:404) at org.apache.tomcat.core.Handler.service(Handler.java:286) at org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372) at org.apache.tomcat.core.ContextManager.internalService(ContextManager.java:797) at org.apache.tomcat.core.ContextManager.service(ContextManager.java:743) at org.apache.tomcat.service.http.HttpConnectionHandler.processConnection(HttpConnectionHandler.java:210) at org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java:416) at org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:498) at java.lang.Thread.run(Thread.java:484) Finally Thanks in advance. Allan Kamau.

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