Хочу создать отчет( в pdf) с помощью JasperReports из web-приложения(struts).
Делаю согласно книге "JasperReports for Java Developers"
Action-класс
| Код |
public class QuestionnaireReportAction extends BaseAction {
@Override
public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
throws Exception {
Collection<QuestionnairePerson> persons = personManager.listPersons();
ServletOutputStream servletOutputStream = response.getOutputStream();
InputStream reportStream = getServlet().getServletConfig().getServletContext().getResourceAsStream("report.jasper");
response.setContentType("application/pdf");
JRDataSource dataSource = new JRBeanCollectionDataSource(persons);
JasperRunManager.runReportToPdfStream(reportStream, servletOutputStream, new HashMap(), dataSource);
servletOutputStream.flush();
servletOutputStream.close();
return mapping.getInputForward();
}
}
|
struts-config.xml
| Код |
<action input="/WEB-INF/pages/dm/task/ViewTask.jsp"
name="TaskActionForm"
scope="request"
path="/dm/filled/callReport"
type="ru.izhnet.web.action.dm.filled.QuestionnaireReportAction"/>
|
код JSP, из которого вызываю action
| Код |
<html:form action="/dm/filled/callReport?task_id=${task.key}" target="_new" >
<html:submit>
<bean:message key="dm.questionnaire.results"/>
</html:submit>
</html:form>
|
Создается пустой pdf-файл и вываливается вот такая ошибка.
| Код |
ApplicationDispatcher[/Owl] PWC1231: 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:700)
at org.apache.coyote.tomcat5.CoyoteResponseFacade.getWriter(CoyoteResponseFacade.java:210)
at javax.servlet.ServletResponseWrapper.getWriter(ServletResponseWrapper.java:135)
at javax.servlet.ServletResponseWrapper.getWriter(ServletResponseWrapper.java:135)
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.WEB_002dINF.pages.dm.task.ViewTask_jsp._jspService(ViewTask_jsp.java from :267)
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.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:317)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:198)
at org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:390)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:230)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:198)
at org.apache.catalina.core.ApplicationDispatcher.doInvoke(ApplicationDispatcher.java:853)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:703)
at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:660)
at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:578)
at org.apache.struts.action.RequestProcessor.doInclude(RequestProcessor.java:1116)
at org.apache.struts.tiles.TilesRequestProcessor.doForward(TilesRequestProcessor.java:260)
at org.apache.struts.action.RequestProcessor.processForwardConfig(RequestProcessor.java:398)
at org.apache.struts.tiles.TilesRequestProcessor.processForwardConfig(TilesRequestProcessor.java:318)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:241)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:738)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:831)
at org.apache.catalina.core.ApplicationFilterChain.servletService(ApplicationFilterChain.java:411)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:317)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:198)
at ru.izhnet.web.filter.SelectLanguageFilter.doFilter(SelectLanguageFilter.java:30)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:230)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:198)
at org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:390)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:230)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:198)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:288)
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:270)
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:339)
at com.sun.enterprise.web.connector.grizzly.DefaultReadTask.doTask(DefaultReadTask.java:261)
at com.sun.enterprise.web.connector.grizzly.DefaultReadTask.doTask(DefaultReadTask.java:212)
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)
|
Искал в гугле. Как я понял, такая ошибка возникает если в выходной поток response.getOutputStream() пытаются одновременно писаться pdf-файл и JSP. Только что с этим делать, мне не понятно. |