Este modo de imprimir usando JasperReport está correto?

Front-end
#1

ola pessoal tenho um jsp que imprime em pdf mas os metodos que uso estão tachados na IDE do netBeans 6.5. existem outros que possa ser substituidos ou usa-se esses mesmo?

veja

<%

        try {
            java.sql.Connection conexao = HibernateUtil.getSession().connection();//.connection() esta tachado na netbeans
            String path = getServletContext().getRealPath("WEB-INF/reports") + "/";
            String imagem = getServletContext().getRealPath("images") + "/logo1.gif";
            String relatorio = path + "relatorioEleitores.jasper";
            Map parameters = new HashMap();
            parameters.put("ELEICAO", Integer.parseInt(request.getParameter("idEleicao")));
            parameters.put("IMAGEM", imagem);
            JasperPrint impressao = JasperFillManager.fillReport(relatorio, parameters, conexao);
            JasperManager.printReportToPdfStream(impressao, response.getOutputStream());//JasperManager.printReportToPdfStream esta tachado no netbeans
            conexao.close();
        } catch (Exception e) {
            out.println("ERRO! Relatorio não gerado:");
            out.println("<br><br>");
            out.println(e.getMessage());
            out.println("<br><br>");
            out.println(e.getCause());
        }
        %>
#2

obtive outra maneira que substitui os tachados os relatorios funcionam normalmente e mostra em pdf dentro do extjs tudo certinho. o problema que ao observar na saida do glassfish o este erro não some o que pode ser?

StandardWrapperValve[jsp]: PWC1406: Servlet.service() for servlet jsp threw exception
java.lang.IllegalStateException: PWC3991: getOutputStream() has already been called for this response
at org.apache.coyote.tomcat5.CoyoteResponse.getWriter(CoyoteResponse.java:701)
at org.apache.coyote.tomcat5.CoyoteResponseFacade.getWriter(CoyoteResponseFacade.java:210)
at org.apache.jasper.runtime.JspWriterImpl.initOut(JspWriterImpl.java:171)
at org.apache.jasper.runtime.JspWriterImpl.flushBuffer(JspWriterImpl.java:164)
at org.apache.jasper.runtime.PageContextImpl.release(PageContextImpl.java:221)
at org.apache.jasper.runtime.JspFactoryImpl.internalReleasePageContext(JspFactoryImpl.java:157)
at org.apache.jasper.runtime.JspFactoryImpl.releasePageContext(JspFactoryImpl.java:108)
at org.apache.jsp.relConfZerezima_jsp._jspService(relConfZerezima_jsp.java from :102)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:93)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:831)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:373)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:470)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:364)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:831)
at org.apache.catalina.core.ApplicationFilterChain.servletService(ApplicationFilterChain.java:411)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:290)
at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:271)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:202)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:632)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:577)
at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:94)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:206)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:632)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:577)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:571)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:1080)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:150)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:632)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:577)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:571)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:1080)
at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:272)
at com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.invokeAdapter(DefaultProcessorTask.java:637)
at com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.doProcess(DefaultProcessorTask.java:568)
at com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.process(DefaultProcessorTask.java:813)
at com.sun.enterprise.web.connector.grizzly.DefaultReadTask.executeProcessorTask(DefaultReadTask.java:341)
at com.sun.enterprise.web.connector.grizzly.DefaultReadTask.doTask(DefaultReadTask.java:263)
at com.sun.enterprise.web.connector.grizzly.DefaultReadTask.doTask(DefaultReadTask.java:214)
at com.sun.enterprise.web.connector.grizzly.TaskBase.run(TaskBase.java:265)
at com.sun.enterprise.web.connector.grizzly.ssl.SSLWorkerThread.run(SSLWorkerThread.java:106)

#3

pesquisando eu percebi que não posso usar mais de uma vez o metodo response.getOutputStream();. Se observar neste jsp não contem outro mas acho que dentro do servlet ja contem. Como posso pegar o meu outputStram então para acabar com essa exception?

até retornei um topico antigo

http://www.guj.com.br/posts/list/19660.java

#4