Hi,
I am getting the *java.lang.IllegalStateException: getOutputStream()* has
already been called for this response when I use *return
map.findForward("success")* at the end of action method. But this exception
wont appear if I return null. As I am not using writer object. But this will
not display an error message in the jsp through action messages.
I am using struts1.3.
How to avoid the above said exception so that I can generate a pdf when
success and print a message when failed. As this is occurring because both
writer and outputstream are using at the same time.
Is it possible to close the outputstream after generating the pdf and after
that to send the message struts jsp using default writer.
My code is:
public ActionForward execute(ActionMapping map, ActionForm form,
HttpServletRequest req, HttpServletResponse res) throws
Exception {
String savefilename = req.getParameter("savefilename")+".pdf";
FileForm file2 = (FileForm) form;
ArrayList list = file2.getList();
FormFile f2 = (FormFile) list.get(0);
Boolean b1 = validate(f2.getFileName());
if(b1==false){
ActionMessages messages = new ActionMessages();
messages.add("sts", new
ActionMessage("common.generatepdf.onlyimages"));
saveErrors(req, messages);
return map.findForward("success");
}
ServletOutputStream outStream=null;
Document document=new Document(PageSize.A4,0,0,10,10);
res.setContentType("application/pdf");
res.setHeader("Content-Disposition","attachment;
filename="+savefilename);
outStream = res.getOutputStream();
PdfWriter writer =
PdfWriter.getInstance(document,res.getOutputStream());
writer.setStrictImageSequence(true);
document.addHeader("String","Content");
document.open();
try{
for (int count = 0; count < list.size(); count++) {
FormFile f1 = (FormFile) list.get(count);
Boolean b = validate(f1.getFileName());
if(b==true){
Image convertJpg = Image.getInstance(f1.getFileData());
if(convertJpg.getDpiX()>75 & convertJpg.getDpiY()>75){
convertJpg.scaleToFit(200, 200);
}
document.add(new Paragraph());
document.add(convertJpg);
}
}
document.close();
writer.close();
ActionMessages messages = new ActionMessages();
messages.add("sts", new
ActionMessage("common.generatepdf.success"));
saveMessages(req, messages);
}catch(Exception e){
ActionMessages messages = new ActionMessages();
messages.add("sts", new
ActionMessage("common.generatepdf.fail"));
saveErrors(req, messages);
}
finally {
if(outStream != null)
try {
document.close();
writer.close();
outStream.close();
outStream.flush();
catch (IOException e) {
e.printStackTrace();
}
}
*/stack trace is:/*
java.lang.IllegalStateException: getOutputStream() has already been called
for this response
at org.apache.catalina.connector.Response.getWriter(Response.java:611)
at
org.apache.catalina.connector.ResponseFacade.getWriter(ResponseFacade.java:198)
at
javax.servlet.ServletResponseWrapper.getWriter(ServletResponseWrapper.java:122)
at
org.apache.jasper.runtime.JspWriterImpl.initOut(JspWriterImpl.java:187)
at
org.apache.jasper.runtime.JspWriterImpl.flushBuffer(JspWriterImpl.java:180)
at
org.apache.jasper.runtime.PageContextImpl.release(PageContextImpl.java:237)
at
org.apache.jasper.runtime.JspFactoryImpl.internalReleasePageContext(JspFactoryImpl.java:173)
at
org.apache.jasper.runtime.JspFactoryImpl.releasePageContext(JspFactoryImpl.java:124)
at
org.apache.jsp.pages.common.GeneratePdf_jsp._jspService(org.apache.jsp.pages.common.GeneratePdf_jsp:256)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:109)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:389)
at
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:486)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:380)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:646)
at
org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:551)
at
org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:488)
at
org.apache.struts.chain.commands.servlet.PerformForward.handleAsInclude(PerformForward.java:141)
at
org.apache.struts.chain.commands.servlet.PerformForward.perform(PerformForward.java:92)
at
org.apache.struts.chain.commands.AbstractPerformForward.execute(AbstractPerformForward.java:54)
at
org.apache.struts.chain.commands.ActionCommandBase.execute(ActionCommandBase.java:51)
at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:191)
at
org.apache.commons.chain.generic.LookupCommand.execute(LookupCommand.java:305)
at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:191)
at
org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:283)
at
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:462)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.displaytag.filter.ResponseOverrideFilter.doFilter(ResponseOverrideFilter.java:125)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
com.krishct.efiler.common.actions.SessionFilter.doFilter(SessionFilter.java:50)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:857)
at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
at
org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Unknown Source)
Aug 20, 2011 6:33:19 PM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet action threw exception
java.lang.IllegalStateException: getOutputStream() has already been called
for this response
at org.apache.catalina.connector.Response.getWriter(Response.java:611)
at
org.apache.catalina.connector.ResponseFacade.getWriter(ResponseFacade.java:198)
at
javax.servlet.ServletResponseWrapper.getWriter(ServletResponseWrapper.java:122)
at
org.apache.jasper.runtime.JspWriterImpl.initOut(JspWriterImpl.java:187)
at
org.apache.jasper.runtime.JspWriterImpl.flushBuffer(JspWriterImpl.java:180)
at
org.apache.jasper.runtime.PageContextImpl.release(PageContextImpl.java:237)
at
org.apache.jasper.runtime.JspFactoryImpl.internalReleasePageContext(JspFactoryImpl.java:173)
at
org.apache.jasper.runtime.JspFactoryImpl.releasePageContext(JspFactoryImpl.java:124)
at
org.apache.jsp.pages.common.GeneratePdf_jsp._jspService(org.apache.jsp.pages.common.GeneratePdf_jsp:256)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:109)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:389)
at
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:486)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:380)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:646)
at
org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:551)
at
org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:488)
at
org.apache.struts.chain.commands.servlet.PerformForward.handleAsInclude(PerformForward.java:141)
at
org.apache.struts.chain.commands.servlet.PerformForward.perform(PerformForward.java:92)
at
org.apache.struts.chain.commands.AbstractPerformForward.execute(AbstractPerformForward.java:54)
at
org.apache.struts.chain.commands.ActionCommandBase.execute(ActionCommandBase.java:51)
at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:191)
at
org.apache.commons.chain.generic.LookupCommand.execute(LookupCommand.java:305)
at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:191)
at
org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:283)
at
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:462)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.displaytag.filter.ResponseOverrideFilter.doFilter(ResponseOverrideFilter.java:125)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
com.krishct.efiler.common.actions.SessionFilter.doFilter(SessionFilter.java:50)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:857)
at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
at
org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Unknown Source)
20.08.2011 18:33:19 *WARN * AbstractExceptionHandler: Unhandled exception
(AbstractExceptionHandler.java, line 95)
java.lang.IllegalStateException: getOutputStream() has already been called
for this response
at org.apache.catalina.connector.Response.getWriter(Response.java:611)
at
org.apache.catalina.connector.ResponseFacade.getWriter(ResponseFacade.java:198)
at
javax.servlet.ServletResponseWrapper.getWriter(ServletResponseWrapper.java:122)
at
org.apache.jasper.runtime.JspWriterImpl.initOut(JspWriterImpl.java:187)
at
org.apache.jasper.runtime.JspWriterImpl.flushBuffer(JspWriterImpl.java:180)
at
org.apache.jasper.runtime.PageContextImpl.release(PageContextImpl.java:237)
at
org.apache.jasper.runtime.JspFactoryImpl.internalReleasePageContext(JspFactoryImpl.java:173)
at
org.apache.jasper.runtime.JspFactoryImpl.releasePageContext(JspFactoryImpl.java:124)
at
org.apache.jsp.pages.common.GeneratePdf_jsp._jspService(org.apache.jsp.pages.common.GeneratePdf_jsp:256)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:109)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:389)
at
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:486)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:380)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:646)
at
org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:551)
at
org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:488)
at
org.apache.struts.chain.commands.servlet.PerformForward.handleAsInclude(PerformForward.java:141)
at
org.apache.struts.chain.commands.servlet.PerformForward.perform(PerformForward.java:92)
at
org.apache.struts.chain.commands.AbstractPerformForward.execute(AbstractPerformForward.java:54)
at
org.apache.struts.chain.commands.ActionCommandBase.execute(ActionCommandBase.java:51)
at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:191)
at
org.apache.commons.chain.generic.LookupCommand.execute(LookupCommand.java:305)
at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:191)
at
org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:283)
at
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:462)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.displaytag.filter.ResponseOverrideFilter.doFilter(ResponseOverrideFilter.java:125)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
com.krishct.efiler.common.actions.SessionFilter.doFilter(SessionFilter.java:50)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:857)
at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
at
org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Unknown Source)
20.08.2011 18:33:19 *WARN * ExceptionCatcher: Exception from
exceptionCommand 'servlet-exception' (ExceptionCatcher.java, line 165)
java.lang.IllegalStateException: getOutputStream() has already been called
for this response
at org.apache.catalina.connector.Response.getWriter(Response.java:611)
at
org.apache.catalina.connector.ResponseFacade.getWriter(ResponseFacade.java:198)
at
javax.servlet.ServletResponseWrapper.getWriter(ServletResponseWrapper.java:122)
at
org.apache.jasper.runtime.JspWriterImpl.initOut(JspWriterImpl.java:187)
at
org.apache.jasper.runtime.JspWriterImpl.flushBuffer(JspWriterImpl.java:180)
at
org.apache.jasper.runtime.PageContextImpl.release(PageContextImpl.java:237)
at
org.apache.jasper.runtime.JspFactoryImpl.internalReleasePageContext(JspFactoryImpl.java:173)
at
org.apache.jasper.runtime.JspFactoryImpl.releasePageContext(JspFactoryImpl.java:124)
at
org.apache.jsp.pages.common.GeneratePdf_jsp._jspService(org.apache.jsp.pages.common.GeneratePdf_jsp:256)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:109)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:389)
at
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:486)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:380)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:646)
at
org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:551)
at
org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:488)
at
org.apache.struts.chain.commands.servlet.PerformForward.handleAsInclude(PerformForward.java:141)
at
org.apache.struts.chain.commands.servlet.PerformForward.perform(PerformForward.java:92)
at
org.apache.struts.chain.commands.AbstractPerformForward.execute(AbstractPerformForward.java:54)
at
org.apache.struts.chain.commands.ActionCommandBase.execute(ActionCommandBase.java:51)
at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:191)
at
org.apache.commons.chain.generic.LookupCommand.execute(LookupCommand.java:305)
at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:191)
at
org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:283)
at
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:462)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.displaytag.filter.ResponseOverrideFilter.doFilter(ResponseOverrideFilter.java:125)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
com.krishct.efiler.common.actions.SessionFilter.doFilter(SessionFilter.java:50)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:857)
at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
at
org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Unknown Source)
return map.findForward("success");
// return null;
}
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