Re: getOutputStream() has already been called for this response
Hi, I am also facing the same problem while trying to download to excel. Plz let me know what code u have added to solve this problem -- View this message in context: http://struts.1045723.n5.nabble.com/Cannot-forward-after-response-has-been-committed-tp5710573p5711663.html Sent from the Struts - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: user-unsubscr...@struts.apache.org For additional commands, e-mail: user-h...@struts.apache.org
Re: getOutputStream() has already been called for this response
now this problem is solved i added a piece of code the file is downloading when downloading the file it gives an exception cannot forward after response has been committed .and i am trying to open the file it says the file you are trying to open .xls is in a different format than specified by the file extension how can i solve this issue pls help me. i edit my previous post and code pls see it -- View this message in context: http://struts.1045723.n5.nabble.com/Cannot-forward-after-response-has-been-committed-tp5710573p5710619.html Sent from the Struts - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: user-unsubscr...@struts.apache.org For additional commands, e-mail: user-h...@struts.apache.org
Re: getOutputStream() has already been called for this response
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 raghu88, On 9/4/12 2:25 AM, raghu88 wrote: i am trying to export some data to excel file...while doing this i am getting following exception: 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:598) [:6.1.0.Final] Why are you calling response.getWriter() when you want to export Microsoft Excel (binary) data? You want to be using getOutputStream anyway, so you should switch. The problem is that getOutputStream has been called already for this response, and so you can't use a Writer to generate a response instead. - -chris -BEGIN PGP SIGNATURE- Version: GnuPG/MacGPG2 v2.0.17 (Darwin) Comment: GPGTools - http://gpgtools.org Comment: Using GnuPG with Mozilla - http://www.enigmail.net/ iEYEARECAAYFAlBIyckACgkQ9CaO5/Lv0PCWdQCeOha4wFSe4opK3d00FLJ6GK7V nqAAn3M0OZuC2G0yZdG4T4R1vWZ4C4mU =o8DH -END PGP SIGNATURE- - To unsubscribe, e-mail: user-unsubscr...@struts.apache.org For additional commands, e-mail: user-h...@struts.apache.org
RE: getOutputStream() has already been called for this response
Imagine you are the connector-code Someone has called getOutputStream to write (some Thread Local data) to your HttpServletResponse object then the call to getOutputStream (to the same thread) of HttpServletResponse is called AGAIN Which OutputStream is the connector supposed to write (its Thread Local Data) to HttpServletResponse? Martin __ Verzicht und Vertraulichkeitanmerkung Diese Nachricht ist vertraulich. Sollten Sie nicht der vorgesehene Empfaenger sein, so bitten wir hoeflich um eine Mitteilung. Jede unbefugte Weiterleitung oder Fertigung einer Kopie ist unzulaessig. Diese Nachricht dient lediglich dem Austausch von Informationen und entfaltet keine rechtliche Bindungswirkung. Aufgrund der leichten Manipulierbarkeit von E-Mails koennen wir keine Haftung fuer den Inhalt uebernehmen. Date: Mon, 3 Sep 2012 23:25:40 -0700 From: tammi...@gmail.com To: user@struts.apache.org Subject: getOutputStream() has already been called for this response hi to all, please any one help me .i am trying to export some data to excel file...while doing this i am getting following exceptionrecently i was done clustering with jboss and apache...then onwards i am getting this error Here is the stack trace... 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:598) [:6.1.0.Final] at org.apache.catalina.connector.ResponseFacade.getWriter(ResponseFacade.java:199) [:6.1.0.Final] at org.apache.jasper.runtime.JspWriterImpl.initOut(JspWriterImpl.java:125) [:6.1.0.Final] at org.apache.jasper.runtime.JspWriterImpl.flushBuffer(JspWriterImpl.java:118) [:6.1.0.Final] at org.apache.jasper.runtime.PageContextImpl.release(PageContextImpl.java:188) [:6.1.0.Final] at org.apache.jasper.runtime.JspFactoryImpl.internalReleasePageContext(JspFactoryImpl.java:117) [:6.1.0.Final] at org.apache.jasper.runtime.JspFactoryImpl.releasePageContext(JspFactoryImpl.java:76) [:6.1.0.Final] at org.apache.jsp.pages.MozartCostLoginAdmin_jsp._jspService(MozartCostLoginAdmin_jsp.java:86) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) [:6.1.0.Final] at javax.servlet.http.HttpServlet.service(HttpServlet.java:847) [:1.0.0.Final] at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:369) [:6.1.0.Final] at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:326) [:6.1.0.Final] at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:253) [:6.1.0.Final] at javax.servlet.http.HttpServlet.service(HttpServlet.java:847) [:1.0.0.Final] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:324) [:6.1.0.Final] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:242) [:6.1.0.Final] at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:734) [:6.1.0.Final] at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:541) [:6.1.0.Final] at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:479) [:6.1.0.Final] at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:407) [:6.1.0.Final] at org.apache.struts.action.RequestProcessor.doForward(RequestProcessor.java:1063) [:1.2.7] at org.apache.struts.action.RequestProcessor.processForwardConfig(RequestProcessor.java:386) [:1.2.7] at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:229) [:1.2.7] at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1194) [:1.2.7] at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432) [:1.2.7] at javax.servlet.http.HttpServlet.service(HttpServlet.java:754) [:1.0.0.Final] at javax.servlet.http.HttpServlet.service(HttpServlet.java:847) [:1.0.0.Final] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:324) [:6.1.0.Final] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:242) [:6.1.0.Final] at com.zyom.security.LoginMonitorFilter.doFilter(LoginMonitorFilter.java:67) [:] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:274) [:6.1.0.Final] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:242) [:6.1.0.Final] at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:275) [:6.1.0.Final] at
Re: getOutputStream() has already been called for this response
A request can only return one response: the file, or a forward (assuming
it's not some sort of streaming forward).
That method is pretty hard to follow, and should be refactored, IMO.
Dave
On Saturday, August 20, 2011, raaja.g raaj...@gmail.com wrote:
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
Re: getOutputStream() has already been called for this response
When you return SUCCESS you're asking S2 to process the response normally. I'd
assume you'd need to return null to indicate that S2 shouldn't do anything.
I don't actually know if that works, because there's a stream result type
designed specifically for this situation.
Dave
--- On Wed, 12/10/08, red phoenix [EMAIL PROTECTED] wrote:
From: red phoenix [EMAIL PROTECTED]
Subject: getOutputStream() has already been called for this response
To: Struts Users Mailing List user@struts.apache.org
Date: Wednesday, December 10, 2008, 11:26 AM
I use struts2.0.11,I want to show a picture by struts
action,like follows:
public String showphoto() throws Exception{
response=ServletActionContext.getResponse();
response.setContentType(image/png);
...
InputStream in = picture.getBinaryStream();
OutputStream out = response.getOutputStream();
byte[] buf = new byte[1024];
int len;
while ((len = in.read(buf)) != -1){
out.write(buf, 0, len);
}
in.close();
out.close();
response.flushBuffer();
return SUCCESS;
}
When I run above code,it can run well,and it can show
picture in jsp,but I
find it write error information in tomcat6,like follows:
fatal: Servlet.service() for servlet jsp threw exception
java.lang.IllegalStateException: getOutputStream() has
already been called
for this response
at
org.apache.catalina.connector.Response.getWriter(Response.java:610)
at
org.apache.catalina.connector.ResponseFacade.getWriter(ResponseFacade.java:198)
at
javax.servlet.ServletResponseWrapper.getWriter(ServletResponseWrapper.java:112)
at
org.apache.jasper.runtime.JspWriterImpl.initOut(JspWriterImpl.java:125)
Why raise above error in tomcat6? How to correct my code to
correct above
error?
Thanks in advance!
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