Jasper Report + iReport + NetBeans 4

[wifer]

tengo un reporte que ejecute desde jsp, el cual me funciona 1, 2 y la tercera ver se bloquea el tomcat generando el siguiente error:

GRAVE: Servlet.service() para servlet jsp lanzó excepción
java.lang.IllegalStateException: getOutputStream() ya ha sido llamado para esta respuesta
at org.apache.catalina.connector.Response.getWriter(R esponse.java:596)
at org.apache.catalina.connector.ResponseFacade.getWr iter(ResponseFacade.java:186)
at org.apache.jasper.runtime.JspWriterImpl.initOut(Js pWriterImpl.java:124)
at org.apache.jasper.runtime.JspWriterImpl.flushBuffe r(JspWriterImpl.java:117)
at org.apache.jasper.runtime.PageContextImpl.release( PageContextImpl.java:191)
at org.apache.jasper.runtime.JspFactoryImpl.internalR eleasePageContext(JspFactoryImpl.java:115)
at org.apache.jasper.runtime.JspFactoryImpl.releasePa geContext(JspFactoryImpl.java:75)
at org.apache.jsp.jsp.runReportPDF_jsp._jspService(or g.apache.jsp.jsp.runReportPDF_jsp:124)
at org.apache.jasper.runtime.HttpJspBase.service(Http JspBase.java:99)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:802)
at org.apache.jasper.servlet.JspServletWrapper.servic e(JspServletWrapper.java:325)
at org.apache.jasper.servlet.JspServlet.serviceJspFil e(JspServlet.java:291)
at org.apache.jasper.servlet.JspServlet.service(JspSe rvlet.java:241)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:802)
at org.apache.catalina.core.ApplicationFilterChain.in ternalDoFilter(ApplicationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.do Filter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.StandardWrapperValve.invo ke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invo ke(StandardContextValve.java:178)
at org.apache.catalina.core.StandardHostValve.invoke( StandardHostValve.java:126)
at org.apache.catalina.valves.ErrorReportValve.invoke (ErrorReportValve.java:105)
at org.apache.catalina.core.StandardEngineValve.invok e(StandardEngineValve.java:107)
at org.apache.catalina.connector.CoyoteAdapter.servic e(CoyoteAdapter.java:148)
at org.apache.coyote.http11.Http11Processor.process(H ttp11Processor.java:856)
at org.apache.coyote.http11.Http11Protocol$Http11Conn ectionHandler.processConnection(Http11Protocol.jav a:744)
at org.apache.tomcat.util.net.PoolTcpEndpoint.process Socket(PoolTcpEndpoint.java:527)
at org.apache.tomcat.util.net.LeaderFollowerWorkerThr ead.runIt(LeaderFollowerWorkerThread.java:80)
at org.apache.tomcat.util.threads.ThreadPool$ControlR unnable.run(ThreadPool.java:684)
at java.lang.Thread.run(Unknown Source)

Todo me funciona de acuerdo a lo que se ha dicho en el foro.

mil gracias
wifer