Java.lang.IllegalStateException: Cannot forward. Response already committed

i have deployed my application on Websphere application server 5.0. most of the time my jsp page works properly with any exception, but somtime it give me expeception and display page uncompletely rendered.
Follwoing exception occure on particual page with particular record and same page works correctly with other reocrds....
java.lang.IllegalStateException: Cannot forward. Response already committed. (Servlet 2.3, SRV 8.4)
     at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.forward(WebAppRequestDispatcher.java:160)
     at com.mcb.cpms.presentation.controllers.CPMSController.dispatchRequest(CPMSController.java:918)
     at com.mcb.cpms.presentation.controllers.CPMSController.doGet(CPMSController.java:1278)
     at com.mcb.cpms.presentation.controllers.CPMSController.doPost(CPMSController.java:1308)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
     at com.ibm.ws.webcontainer.servlet.StrictServletInstance.doService(StrictServletInstance.java:110)
     at com.ibm.ws.webcontainer.servlet.StrictLifecycleServlet._service(StrictLifecycleServlet.java:174)
     at com.ibm.ws.webcontainer.servlet.IdleServletState.service(StrictLifecycleServlet.java:313)
     at com.ibm.ws.webcontainer.servlet.StrictLifecycleServlet.service(StrictLifecycleServlet.java:116)
     at com.ibm.ws.webcontainer.servlet.ServletInstance.service(ServletInstance.java:283)
     at com.ibm.ws.webcontainer.servlet.ValidServletReferenceState.dispatch(ValidServletReferenceState.java:42)
     at com.ibm.ws.webcontainer.servlet.ServletInstanceReference.dispatch(ServletInstanceReference.java:40)
     at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.handleWebAppDispatch(WebAppRequestDispatcher.java:948)
     at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.dispatch(WebAppRequestDispatcher.java:530)
     at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.forward(WebAppRequestDispatcher.java:176)
     at com.ibm.ws.webcontainer.srt.WebAppInvoker.doForward(WebAppInvoker.java:79)
     at com.ibm.ws.webcontainer.srt.WebAppInvoker.handleInvocationHook(WebAppInvoker.java:201)
     at com.ibm.ws.webcontainer.cache.invocation.CachedInvocation.handleInvocation(CachedInvocation.java:71)
     at com.ibm.ws.webcontainer.cache.invocation.CacheableInvocationContext.invoke(CacheableInvocationContext.java:114)
     at com.ibm.ws.webcontainer.srp.ServletRequestProcessor.dispatchByURI(ServletRequestProcessor.java:186)
     at com.ibm.ws.webcontainer.oselistener.OSEListenerDispatcher.service(OSEListener.java:334)
     at com.ibm.ws.webcontainer.http.HttpConnection.handleRequest(HttpConnection.java:56)
     at com.ibm.ws.http.HttpConnection.readAndHandleRequest(HttpConnection.java:610)
     at com.ibm.ws.http.HttpConnection.run(HttpConnection.java:431)
     at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:593)
i will be thankfull if any one have any idea about it.....
waiting for your immediate response

Hi Junaid,
Your code can be work correctly on different servers or with other records but it can not be handled with buffer or autoflush,
I had same problem a few weeks ago. And lastly I had to control before printing any output. My application was working on WebSphere but not on Tomcat, so it is general problem.
The only way if you have to put some output before sending redirect:
When you want to redirect the page, write window.location = ... (javascript code).
When page is loaded automatically will be redirected to the page you want. But of course it is a bit slow.
Good Luck,
isturk.

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taskDispatcher.include(req, res);
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Sunday, September 9, 2001 Tomcat 4.0 Release Candidate 1
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null

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Question I used getOutputStream() of response object in JSP. Below is the code for download a file in JSP.
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If run this code in Tomcat i am getting following error.. �<h1>Error: 500</h1> <h2>Location: /imu/jsp/ibUTLCmnDownloadView.jsp</h2>Internal Servlet Error:
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Answer
Don't know if this will help--your code worked as is on my system (J2SDK 1.4.1, Tomcat 4.1.12, Linux)--but you're setting the content-type twice, and to two different values. In the page directive, you specify contentType="text/html; charset=8859_1", and then in the scriptlet, you do a response.setContentType ("application/excel");. Try changing the one in the page directive and deleting the one in the scriptlet. The servlet container may be calling getOutputStream() when it sees the text MIME type so it can prepare the out built-in variable.
Also, according to the J2EE design patterns, JSP's should only be used to produce text output. Any binary output (such as Excel files) should be produced with servlets--otherwise, the JSP becomes one big scriptlet (like this one).
If you still want to do this with a JSP, you might want to take out your try ... catch block since you're not doing anything with it. Doing so will allow you to let the servlet container handle the errors (i.e. specify error pages in the web application deployment descriptor). Either that, or at least put the close() and flush()calls in it since they can throw IOExceptions, too. :)
Finally, you should never close the servlet's output stream. Leave that up to the servlet container.
Is this item helpful? yes no Previous votes Yes: 2 No: 3
To transfer file from client to server using jsp programs
chalpati Rao, Aug 11, 2004 [replies:1]
How to Download File using JSP program
Re: To transfer file from client to server using jsp programs
Saravanan Mani, Aug 24, 2004
Try restarting the server.It worked for me (ie.you did all the code changes mentioned in the previous reply)
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David Machado, Jan 27, 2005 [replies:1]
Hi! Maybe a problem with breaklines. Try this: ------------------------------------------------------
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page import="java.util.*,
java.io.*"
%><%@ // don't send breakline here too!!!
page language="java"
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%><% // finally, don't send breakline here!!!
//read the file name.
File fFile = new File ("D:/Ibs/outdir/batchres.conf");
String stFileName = "batchres.conf";
//the content type set as excel
response.setContentType ("application/excel"); // twice???
//the header and also the Nameis set by which user will be prompted to save
response.setHeader ("Content-Disposition", "attachment;filename=\""+stFileName+"\"");
//Open an input stream to the file and post the file contents thru the
//servlet output stream to the client m/c
InputStream isStream = null;
ServletOutputStream sosStream = null;
try
//response.flushBuffer();
isStream = new FileInputStream(fFile);
sosStream = response.getOutputStream();
int ibit = 256;
while ((ibit) >= 0)
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sosStream.write(ibit);
catch (IOException ioeException)
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Re: Breakline problems
Aarthi Sivaram, Apr 19, 2005
In the above code sosStream = response.getOutputStream(); must be removed. Use 'out' instead of sosStream i.e. out.write(""+ibit); If you look at the Java code generated for your JSP, you can find JspWriter out = null ... .. JspWriter calls response.getOutputStream(), thats why when u call getOutputStream, u get IllegalStateException. 'out' variable is available for direct use in all JSP's, like 'request'. So that can be directly used to write.
A quick and working workaround
Leslie Leng, May 20, 2005 [replies:1]
I am not going to discuss the theory behind, as others gurus mentioned before me, are valid.
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in example:
catch(Exception e){
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%>
Re: A quick and working workaround
ajit Pandey, Jul 15, 2005
Thanks a ton Leslie ,it worked(Production issue) :) credit goes to you....indebted

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          con.close();
          catch(Exception e){
               e.printStackTrace();
          response.sendRedirect("employee.jsp");Shoeb

here is the error
java.lang.IllegalStateException
     org.apache.catalina.connector.ResponseFacade.sendRedirect(ResponseFacade.java:433)
     employee.doPost(employee.java:55)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
try{
          Class.forName("com.mysql.jdbc.Driver");
          Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/test","root","root");
          PreparedStatement statement = con.prepareStatement(sql);
          int i = 0;
          i = i+1;
          statement.setString(1,designation);
          i = i+1;
          statement.setString(2,Address);
          i = i+1;
          statement.setString(3,name);
          statement.executeUpdate();
          statement.close();
          con.close();
          response.sendRedirect("employee.jsp");
          catch(Exception e){
               e.printStackTrace();
          }

Java.lang.IllegalStateException:Attempt to validate already invalid Region

Hi,
i am using jdev 11.1.1.2
I am working in region, I drag drop the table and so on.Suddenly i start getting this error -”java.lang.IllegalStateException: Attempt to validate an already invalid RegionSite”.
any idea how to solve it.

check all these points..
- Check all bindings of page. if you not able to find it then delete it and create again.
- Add the “-Djbo.debugoutput=console” in JAVA options of the Run/Debug/Profile to see the error
- Check if all the library references for the UI project are proper and that is also accessible.

Jsp:forward failed with 'Response already committed'

I got a "Response already commited" error when using logic:forward or jsp:forward inside a JSP page fragment that is part of a Struts Tiles layout.
Here is the code fragment included in the layout.jsp.
<%@ taglib uri="/WEB-INF/struts-logic.tld" prefix="logic" %>
<logic:notPresent name="user" scope="session">
<logic:forward name="login" />
</logic:notPresent>
Here is the error message:
[ServletException in:/WEB-INF/tiles/verifyLogin.jsp] Exception forwarding for name login: java.lang.IllegalStateException: Cannot forward. Response already committed. (Servlet 2.3, SRV 8.4)'

Jsp normally buffers output in a 8k buffer and write it to the output stream (i.e. "commits") it when:
1) it is explicitly flushed
2) the buffer overflow
3) an jsp include is invoked
My code is in a layout.jsp file which is referenced in a tiles-definition. The tiles definition is tiles:inserted in a top-level jsp file. I am not sure if tiles uses jsp:include or if there is a way to get jsp:foward to work in the layout.jsp.

Forward Request giving java.lang.IllegalStateException

Hi Friends,
I am using RequestDispatcher to forwrd my request from one servlet to another
Here's the code
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.sql.*;
public class TryServlet extends HttpServlet
public void service(HttpServletRequest request,HttpServletResponse response)throws ServletException,IOException
try
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
String url="jdbc:odbc:con";
Connection con= DriverManager.getConnection(url,"scott","tiger");
Statement stmt=con.createStatement();
ResultSet rst=stmt.executeQuery("select * from Projects");
response.setContentType("text/html");
PrintWriter out=response.getWriter();
while (rst.next())
String firstname=rst.getString("PIN");
String lastname=rst.getString("ProjectTitle");
out.println("<p> Name:"+firstname+" "+lastname+"");
con.close();
RequestDispatcher rd=getServletContext().getNamedDispatcher("HelloServlet");
rd.forward(request,response);
return;
catch(Exception e)
e.printStackTrace();
I m getting the error
java.lang.IllegalStateException: Cannot forward after response has been committed
i need to include the two rows of tables before i forwad the request to HelloServlet
What needs to be done?
thanx
Pooja

Don't spread the generation of output over several servlets. Your first servlet should retrieve the data and your second servlet should display the data.
Store the data retrieved as a request attribute before forwarding:
// Data.java
public class Data {
public String _firstname;
public String _lastname;
public data(String firstname, String lastname) {
    _firstname = firstname;
    _lastname = lastname;
    return;
// TryServlet.java
public class TryServlet extends HttpServlet
List list = new ArrayList();
while (rst.next()) { // store data in list
    String firstname=rst.getString("PIN");
    String lastname=rst.getString("ProjectTitle");
    Data data = new data(firstname, lastname);
    list.add(data);
con.close();
request.setAttribute("list", list); // store list in request
RequestDispatcher rd=getServletContext().getNamedDispatcher("HelloServlet");
rd.forward(request,response); // list is forwarded as well
return;
}In HelloServlet, you get the request's attribute and display the data:
List list = (List)request.getAttribute("list"); // retrieve list from request
Iterator it = list.iterator();
while (it.hasNext()) { // retrieve data from list and display
    Data data = (Data)it.next();
    out.println("<p>Name: " + data._firstname + " " + data._lastname + "</p>");
}Btw, for displaying the data, a JSP will do better.
Two Bears.

IllegalStateException: Cannot forward to same URI

I am getting the below error. Can some one explain
this error? Thank you.
500 Internal Server Error
com.livesoftware.jsp.JSPServlet:
java.lang.IllegalStateException: Cannot forward to same URI '/telecom/ErrorJSP.jsp'
What does this mean and what should I look for.

It seems that your error page has an error, and tries to forward to itself.
This would result in an endless loop.
Check the page /telecom/ErrorJSP.jsp to see why it would forward to itself.

Session block java.lang.IllegalStateException

hello all
i had developed a jsp but it gives the following error
session block java.lang.IllegalStateException: Cannot call sendRedirect() after the response has been committed
shd i paste code here?
regards and tanks in advance
hema

The error is fairly self explanatory.
"Cannot call sendRedirect() after the response has been committed "
Once you start sending a response, you can't suddenly change your mind. JSP pages have a "buffer" to give you some leeway. The default buffer size is 8kb.
The response is committed when the buffer is flushed. This happens when:
- the buffer gets full
- you explicitly call flush()
There are two possible solutions
1 - Make sure all forward/redirects happen as close to the top of the page as possible. This means they have a good chance of happening before the buffer gets full
2 - make the buffer larger <%@ page buffer="16kb" %>
Also after you do a forward/redirect, then make sure you return directly after it. Just because you call redirect, doesn't mean the page stops executing.
Cheers,
evnafets

Getting error Servlet failed with Exception java.lang.IllegalStateException

Hi
I am getting this error throughout the server when i am trying to download a pdf from that page.
Im attaching the error console
2011 5:10:26 PM CEST> <Error> <HTTP> <aczocc08x.vfcz.dc-ratingen.de> <ShopSrv1_1_pre> <[ACTIVE] ExecuteThread: '7' for queue: 'weblogic.kernel.Default (self-tuning)'> <<WLS Kernel>> <> <> <1306163426535> <BEA-101020> <[weblogic.servlet.internal.WebAppServletContext@172d19e - appName: 'OCC', name: '/shop', context-path: '/shop'] Servlet failed with Exception
java.lang.IllegalStateException: Cannot resize buffer - 76438 bytes have already been written (Servlet 2.3, sec. 5.1)
     at weblogic.servlet.internal.ServletResponseImpl.setBufferSize(ServletResponseImpl.java:338)
     at weblogic.servlet.jsp.PageContextImpl.initialize(PageContextImpl.java:74)
     at weblogic.servlet.jsp.PageContextImpl.<init>(PageContextImpl.java:110)
     at weblogic.servlet.jsp.JspFactoryImpl.getPageContext(JspFactoryImpl.java:40)
     at jsp_servlet._checkout._order.__cart_thank_45_you._jspService(__cart_thank_45_you.java:644)
     at weblogic.servlet.jsp.JspBase.service(JspBase.java:34)
     at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:226)
     at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:124)
     at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:283)
     at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:26)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:42)
     at vodafone.servlet.security.HttpsEnforcingFilter.doFilter(HttpsEnforcingFilter.java:39)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:42)
     at atg.servlet.pipeline.TailPipelineServlet.service(TailPipelineServlet.java:90)
     at atg.servlet.pipeline.PipelineableServletImpl.passRequest(PipelineableServletImpl.java:116)
     at atg.servlet.pipeline.DispatcherPipelineServletImpl.service(DispatcherPipelineServletImpl.java:202)
     at atg.servlet.pipeline.PipelineableServletImpl.passRequest(PipelineableServletImpl.java:116)
     at atg.servlet.pipeline.PipelineableServletImpl.service(PipelineableServletImpl.java:279)
     at vodafone.dynamo.servlet.LocaleRedirector.service(LocaleRedirector.java:75)
     at atg.servlet.pipeline.PipelineableServletImpl.passRequest(PipelineableServletImpl.java:116)
     at atg.servlet.pipeline.PipelineableServletImpl.service(PipelineableServletImpl.java:279)
     at atg.servlet.dafpipeline.RecordingServlet.service(RecordingServlet.java:280)
     at atg.servlet.pipeline.PipelineableServletImpl.passRequest(PipelineableServletImpl.java:116)
     at atg.servlet.http.CookieBufferServlet.service(CookieBufferServlet.java:97)
     at atg.servlet.pipeline.PipelineableServletImpl.passRequest(PipelineableServletImpl.java:116)
     at atg.userprofiling.ExpiredPasswordServlet.service(ExpiredPasswordServlet.java:356)
     at atg.servlet.pipeline.PipelineableServletImpl.passRequest(PipelineableServletImpl.java:116)
     at atg.servlet.pipeline.MimeTyperPipelineServlet.service(MimeTyperPipelineServlet.java:206)
     at atg.servlet.pipeline.PipelineableServletImpl.passRequest(PipelineableServletImpl.java:116)
     at atg.droplet.DropletEventServlet.service(DropletEventServlet.java:565)
     at atg.servlet.pipeline.PipelineableServletImpl.passRequest(PipelineableServletImpl.java:116)
     at atg.servlet.sessionsaver.SessionSaverServlet.service(SessionSaverServlet.java:2442)
     at atg.servlet.pipeline.PipelineableServletImpl.passRequest(PipelineableServletImpl.java:116)
     at atg.commerce.order.CommerceCommandServlet.service(CommerceCommandServlet.java:128)
     at atg.servlet.pipeline.PipelineableServletImpl.passRequest(PipelineableServletImpl.java:116)
     at atg.commerce.promotion.PromotionServlet.service(PromotionServlet.java:191)
     at atg.servlet.pipeline.PipelineableServletImpl.passRequest(PipelineableServletImpl.java:116)
     at atg.userprofiling.AccessControlServlet.service(AccessControlServlet.java:602)
     at atg.servlet.pipeline.PipelineableServletImpl.passRequest(PipelineableServletImpl.java:116)
     at atg.userprofiling.PageEventTriggerPipelineServlet.service(PageEventTriggerPipelineServlet.java:169)
     at atg.servlet.pipeline.PipelineableServletImpl.passRequest(PipelineableServletImpl.java:116)
     at atg.userprofiling.SessionEventTrigger.service(SessionEventTrigger.java:461)
     at atg.servlet.pipeline.PipelineableServletImpl.passRequest(PipelineableServletImpl.java:116)
     at vodafone.servlets.ServletHelper.service(ServletHelper.java:34)
     at atg.servlet.pipeline.PipelineableServletImpl.passRequest(PipelineableServletImpl.java:116)
     at vodafone.dynamo.servlet.DefaultCatalogFixer.service(DefaultCatalogFixer.java:54)
     at atg.servlet.pipeline.PipelineableServletImpl.passRequest(PipelineableServletImpl.java:116)
     at atg.commerce.profile.VodafoneSSOProfileRequestServlet.service(VodafoneSSOProfileRequestServlet.java:231)
     at atg.servlet.pipeline.PipelineableServletImpl.passRequest(PipelineableServletImpl.java:116)
     at atg.userprofiling.ProfileRequestServlet.service(ProfileRequestServlet.java:480)
     at atg.servlet.pipeline.PipelineableServletImpl.passRequest(PipelineableServletImpl.java:116)
     at vodafone.session.SessionSynchronizationServlet.service(SessionSynchronizationServlet.java:38)
     at atg.servlet.pipeline.PipelineableServletImpl.passRequest(PipelineableServletImpl.java:116)
     at atg.servlet.pipeline.DynamoPipelineServlet.service(DynamoPipelineServlet.java:469)
     at atg.servlet.pipeline.PipelineableServletImpl.passRequest(PipelineableServletImpl.java:116)
     at atg.servlet.pipeline.PathAuthenticationPipelineServlet.service(PathAuthenticationPipelineServlet.java:370)
     at atg.servlet.pipeline.PipelineableServletImpl.passRequest(PipelineableServletImpl.java:116)
     at atg.userprofiling.sso.PassportServlet.service(PassportServlet.java:561)
     at atg.servlet.pipeline.PipelineableServletImpl.passRequest(PipelineableServletImpl.java:116)
     at atg.servlet.security.ThreadUserBinderServlet.service(ThreadUserBinderServlet.java:91)
     at atg.servlet.pipeline.PipelineableServletImpl.passRequest(PipelineableServletImpl.java:116)
     at atg.servlet.pipeline.HeadPipelineServlet.passRequest(HeadPipelineServlet.java:1100)
     at atg.servlet.pipeline.HeadPipelineServlet.service(HeadPipelineServlet.java:782)
     at atg.servlet.pipeline.PipelineableServletImpl.service(PipelineableServletImpl.java:231)
     at atg.filter.dspjsp.PageFilter.doFilter(Unknown Source)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:42)
     at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3393)
     at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
     at weblogic.security.service.SecurityManager.runAs(Unknown Source)
     at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2140)
     at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2046)
     at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1366)
     at weblogic.work.ExecuteThread.execute(ExecuteThread.java:200)
     at weblogic.work.ExecuteThread.run(ExecuteThread.java:172)
>
Anyone has any idea or faced this issue before please guide me what is the cause, i have got a feeling that this may be because server has run out of memory.

i havn't written anything before calling set buiffer sizeSo why does the exception message say the opposite?
I can see that error may be because of a jsp named cart_thank-you.jspSo can I. So have a look at it. It is writing something before the other thing is calling setBufferSize().
you can see that in erro logSo can you.

Java.lang.IllegalStateException: Cannot forward. Response already committed

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