Problem in esponse.sendRedirect()

Hi All
I am trying to write a file download, after completion of the download, I am redirecting to some other url, using response.sendRedirect
But it throws the fallowing error
Servlet.service() for servlet FileDownloadZip threw exception
java.lang.IllegalStateException
     at org.apache.coyote.tomcat5.CoyoteResponseFacade.sendRedirect(CoyoteResponseFacade.java:379)
     at FileDownloadZip.doGet(FileDownloadZip.java:32)
     at FileDownloadZip.doPost(FileDownloadZip.java:319)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:763)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:284)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:204)
     at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:256)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:563)
     at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:245)
     at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:199)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:563)
     at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:195)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151)
     at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:164)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:149)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:563)
     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:156)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:563)
     at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:972)
     at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:209)
     at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:781)
     at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:549)
     at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:589)
     at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:666)
     at java.lang.Thread.run(Thread.java:536)
Could any one tell me how to over come this problem?
Thank you in advance
Anbu
public void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException
actionZipDownloadFile(zip_filename,filename, response);
response.sendredirect(�abc.html�);
private void actionZipDownloadFile(String zip_filename, String filename,HttpServletResponse response) throws IOException {
          System.out.println("I am in actionZipDownloadFile");
          System.out.println("The zip_filename=="+zip_filename);
          System.out.println("The filename=="+filename);
          File f = new File(zip_filename);
          InputStream in = null;
          try {
               jcifs.util.MimeMap mimeMap = new MimeMap();
               response.setContentType( mimeMap.getMimeType( "zip" ));
               response.setHeader( "Content-Disposition", "attachment; filename=\""+filename+"\"" );
               response.setHeader( "Content-Length", Long.toString(f.length()) );
               response.setHeader( "Accept-Ranges", "Bytes" );
               in = new FileInputStream( f);
               OutputStream outStream = response.getOutputStream();
               byte[] b2 = new byte[8192];
               int n = 0;
               while( (n = in.read(b2)) > 0 ) outStream.write(b2,0,n);
               outStream.close();
          catch (Exception e) {System.out.println("The exception is"+e);}
          if (in != null) in.close();
          if (f.exists()) f.delete();
     }

actionZipDownloadFile(zip_filename,filename, response);the response is already sent to the client.
response.sendredirect(�abc.html�);you try to redirect a response to a new resource !!
Suggestion:
redirect using javascript (client side)

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          >>>front of a cluster of two Weblogic 5.1 servers (SP6).
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          >>>documented issues, so am wondering if a) anyone has seen this themselves,
          >>>(b) got it working correctly under SP6, or c) when the hell is SP7
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          >>>
          >>>thanks
          >>>Carl
          >>>
          >>>
          >>
          >

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Issue in applying SSL selectively to Login JSP Page--Session getting lost.

Hi,
I am facing some issues with SSL configuration on my web site running on tomcat 5.5. I am using jdk 1.5 and form based authentication with JAAS framework.
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<form name="login" method="POST" action='<%= response.encodeURL(*"j_security_check*") %>' >
<tr>
<td width="100%">
<table width="260" border="0" cellspacing="0" cellpadding="1">
<tr>
<td align="left" valign="top" rowspan="4"><img src="images/space.gif" width="15" height="5"></td>
<td align="right" class="login-user" nowrap ><p>User name: </p></td>
<td align="left" valign="top"><input maxLength="64" name="j_username" size="20"></td>
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</td>
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<input maxLength=\"64\" tabindex="2" type="password" name="j_password" size="20">
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Thanks,
Masaai

Hi
try to set the maximum interval between requests
eg:
session.setMaxInactiveInterval(6000);
vis

[Tomcat bug?] Calling response.sendError(404) from JSP

Calling "response.sendError(404);" from JSP context causes Tomcat to mangle all non-latin characters.
Any ideas why?
How to recreate bug:
http://www.kitoy.ru/int/bug1.zip
There are 3 files in bug1.zip.
index..jsp:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<%@page pageEncoding="utf-8"%>
<%@page contentType="text/html; charset=utf-8"%>
<%
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%>
<html>
</html>404.jsp:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<%@page pageEncoding="utf-8"%>
<%@page contentType="text/html; charset=utf-8"%>
<html>
<h1>Hello in Russian: Привет!</h1>
</html>and WEB-INF\web.xml:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" "http://java.sun.com/dtd/web-app_2_3.dtd">
<web-app xmlns="http://java.sun.com/xml/ns/j2ee"
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    xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"
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</web-app>Calling of index.jsp should cause 404 error with custom error page. The error page is utf-8 encoded and contains russian characters. That's by design.
In fact, Tomcat shows ?????? instead Russian variant of "Hello".
Tomcat/5.5.17 or Tomcat/5.0.28.- it does not matter.
Is it Tomcat bug or I should not call response.sendError(404) from JSP?

it's not a tomcat bug, it's rather a problem with
your code.
change index.jsp like the following then test
it !
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01
Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<%@page pageEncoding="utf-8"%>
<%@page contentType="text/html; charset=utf-8"%>
<%
esponse.sendRedirect("blablablablablabla.html");
%>
<html>
</html>
Thanks for the insight. But the issue here is with the response.sendError() method.

How to avoid Moved Temporarily page

Hi,
In my app, I use jsp with servelet, and the servelet acts as the "traffic cop", that is, the users fill up the form in jsp pages, and the jsp pages are submitted (post) to this servelet, this servlet do some work by calling other helper class and get the next jsp page to present, and use response.sendRedirect(page). The problem is the "sendRedirect" method, some user complain that they submit the form and got a page says "The document you reqested has moved temporarily" and there is a link, after the user clisk the link, it got the right page, and do another submit for next step, the same thing happed aggain.
I checked the log file, the form post returns 302 code, and the next page (redirected by sendRedirect method) is invoked as GET and returns 200.
what can I do to avoid the problem some user has by presenting the page directly?
Thanks

If you use "forward" instead of "redirect" that won't happen. It might even be a better design, since redirecting displays a URL in the browser's address bar that the client can use to go directly to the JSP instead of through your traffic cop.

How to avoid present 302 page

          Hi,
          In my app, I use jsp with servlet, and the servlet acts as the "traffic cop",
          that is, the users fill up the form in jsp pages, and the jsp pages are submitted
          (post) to this servlet, this servlet do some work and get the next jsp page to
          present, and use response.sendRedirect(page). The problem is the "sendRedirect"
          method, some user complain that they submit the form and got a page says "The
          document you reqested has moved temporarily" and there is a link, after the user
          clisk the link, it got the right page.
          I checked the log file, the form post returns 302 code, and the next page (redirected
          by sendRedirect method) is invoked as GET and returns 200.
          I thought about the forward, but the images in the jsp all has relative path,
          so the call will be /myservelt/images/...gif. That doesn't work.
          what can I do to avoid the problem and send the page directly?
          Thanks


          Thanks. I still can't have a good idea how to deal with. By reading it I may set
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          http1.1 new feature, I don't know what's the percentage of browsers support http1.1.
          I am assuming the older version browsers is for http1.0
          "Deepak Vohra" <[email protected]> wrote:
          >
          >For status codes refer to
          >http://www.apl.jhu.edu/~hall/java/Servlet-Tutorial/Servlet-Tutorial-Response-Status-Line.html
          >
          >
          >"John" <[email protected]> wrote:
          >>
          >>Hi,
          >>
          >>In my app, I use jsp with servlet, and the servlet acts as the "traffic
          >>cop",
          >>that is, the users fill up the form in jsp pages, and the jsp pages
          >are
          >>submitted
          >>(post) to this servlet, this servlet do some work and get the next jsp
          >>page to
          >>present, and use response.sendRedirect(page). The problem is the "sendRedirect"
          >>method, some user complain that they submit the form and got a page
          >says
          >>"The
          >>document you reqested has moved temporarily" and there is a link, after
          >>the user
          >>clisk the link, it got the right page.
          >>
          >>I checked the log file, the form post returns 302 code, and the next
          >>page (redirected
          >>by sendRedirect method) is invoked as GET and returns 200.
          >>
          >>I thought about the forward, but the images in the jsp all has relative
          >>path,
          >>so the call will be /myservelt/images/...gif. That doesn't work.
          >>
          >>what can I do to avoid the problem and send the page directly?
          >>
          >>Thanks
          >

Passing header to another servlet

Hi guys,
I'm trying to pass an 'Authorization' header from a servlet to another.
I do something like this:
String str = "root:12345678";
String encodedStr = new String(Base64.encodeBase64(str.getBytes()));
response.setContentType("text/html");
response.setHeader("Authorization", "Basic " + encodedStr);
response.sendRedirect("http://localhost:8080/Persister/servlet/DestinationServlet");
In the doGet of the destination servlet i print the headers of the request but my 'Authorization' header is disappeared.
Anyone can help me???
Thanks,
Massimo

i think the answer lies in the question...
Hi guys,
I'm trying to pass an 'Authorization' header from a
servlet to another.
I do something like this:
String str = "root:12345678";
String encodedStr = new
String(Base64.encodeBase64(str.getBytes()));
response.setContentType("text/html");
response.setHeader("Authorization", "Basic " +
encodedStr);
esponse.sendRedirect("http://localhost:8080/Persister/
servlet/DestinationServlet");
i think in destination servlet the header data is not submitted . i dont think you are able to get any data in the destination servlet as u are not sending anything to it. correct me if i am wrong
In the doGet of the destination servlet i print the
headers of the request but my 'Authorization' header
is disappeared.
Anyone can help me???
Thanks,
Massimo

Problem with sendRedirect using relative URL in WebLogic 5.1 with SP7 & 8

I patched to SP 7 (and also 8), and the request.sendRedirect() with relative
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          This problem only happens in a cluster environment attached to a web server.
          SP6 or earlier does not have such problem.
          I noticed that the latest SP always formats the URL and returns it as a full
          absolute URL to the browser. The problem is it uses the Weblogic Server host
          URL where the request is processed (not the Web Server host URL) which is
          not visible to the internet.
          Is it possibly a bug in SP?


I patched to SP 7 (and also 8), and the request.sendRedirect() with relative
          URL failed. The browser simply displayed "404 - Page not found".
          This problem only happens in a cluster environment attached to a web server.
          SP6 or earlier does not have such problem.
          I noticed that the latest SP always formats the URL and returns it as a full
          absolute URL to the browser. The problem is it uses the Weblogic Server host
          URL where the request is processed (not the Web Server host URL) which is
          not visible to the internet.
          Is it possibly a bug in SP?

Problem with sendRedirect(..)

Hi,
here is my problem:
I want to log in the user. I have login form, then I send request to the LoginServlet which verifies data and set session attribute (session.setAttribute("isLogin", "true")), then, if user and password is correct I use sendRedirect method to forward user to next page (somePage.jsp which contains an applet), and until now everything is ok.
But when someone wants to use somePage.jsp without login it should check the session logIn attribute and if it is null it should forward to loginPage. Here is the servlet code which gets requests from somePage.jsp:
public void doGet(HttpServletRequest request,HttpServletResponse response)
     throws ServletException, IOException{
          HttpSession session = request.getSession();
          Object done = session.getAttribute("logIn");
          if (done==null){//if user isn't logged
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               return;
//user is logged
          if (session.getAttribute("someAttribute")==null)
          //... do something else
And in this case sendRedirect method doesnt show loginPage. Maybe it's because an applet which is on somePage.jsp?
I'm gratefull for any help.

Hi,
You look like you are losing you context root.
When you send the redirect to "/loginPage.jsp", is means to send your page to something like "http://localhost:8080/loginPage.jsp", using the glassfish default hostname and port. I don't believe your page is located there.
You want to try redirecting to "./loginPage.jsp" ( a period "." in front of the slash), this will use the same directory as the page that sent the request.
You may also want to look at the RequestDispatcher that you get from the request to forward the page internally, so you don't have to send extra data over the net.
There is an excellent JavaEE5 tutorial that may help you when researching these type of problems located at http://java.sun.com/javaee/5/docs/tutorial/doc/.
Hope this helps...
Thanks - Mark

Response.sendRedirect() problem

Hi all,
I in facing a problem during using response.sendRedirect() or there is some mistake, please help me...
I have written two jsp files:
i.e. first.jsp and second.jsp
FIRST.JSP is as follwing:
<%@ page import="java.io.*" %>
<%
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%>
and SECOND.JSP is as follows:
<%@ page import="java.io.*" %>
<%
     String coding=request.getParameter("name").trim();
%>
     My name is <h1><%= coding %></h1>
but when i write the follwing in address bar:
http://localhost:9999/mylogo/first.jsp?name=jake
an error occurs:
NullPointerException messae is received. I am using Apache Tomcat/4.1.29.
Please help me, and tell if ther is any thing missing in this code....
Thankx in advance...

When you use redirection, you are sending a header back to the browser which tells it to go somewhere else. This results in an entirely new request. Because of this, any request info from the first page will not be in the second. The advantage of redirects is you can tell the browser to go to any other server.
If you want to maintain the same request info, you can use forward. Forward only passes control in the server to another page. The browser will have no idea that this is happening, and it cannot go to another server.

Problems with sendredirect(url)

Hi,
I am using a sendredirect method in HttpServletResponse in order to redirect users from my site to other sites.
I am using tomcat 5.x that is connected to IIS.
The problem is that the statistics systems on the other sites do not see my users since there is no "Referer" field.
What can I do? I tested it and saw no Referer field. How can I fix that?
Thanks!

You can always add the header manually before sending the redirect.

Response.sendRedirect(URL), problem if '&' is usd as part of paramete value

i have to redirect to a page having following URL
http://www.citease.com/afc/d&o_coverage.htm
now & is part of value rather than a separater of parameters.
whenever i redirect it as
strURL = "http://localhost:8080/cms/redirector.jsp?ckUrl=http://www.citease.com/afc/d&o_coverage.htm";
response.sendRedirect(strURL);
it will not work properly, will try to access only
http://www.citease.com/afc/d
Please help.
Best regards,
Waseem Aslam

Encode the URL, the & should be & amp;.
You may find the URLEncoder useful.

Problem in esponse.sendRedirect()

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