Problem in session management

Hi i have a servlet which simply verify the userId and password and after successful login it redirect the control to a JSP page where the data is displayed. When i log out it redirect me to another JSp page Known as "Login.jsp" and from there when i pressed back button it is again going to the previous(Data.jsp) page which sould not happen.For this back button i added "*response.setDateHeader("max-age",0);"(whcih is for IE only)* and its now asking "Ur page has expired" But from here if i press "Refresh" button it is again taking me to the "Data.jsp" page.
my servlet i am doing like this :
ResultSet result = stmt.executeQuery(str_queryString);
if(result.next())
result.beforeFirst();
while(result.next())
str_storedUserId = result.getString("userName").trim();
str_storedPassword = result.getString("password").trim();
if((str_storedUserId.equals(str_inputUserId)) && (str_storedPassword.equals(str_inputPassword)) && (str_storedUserId.length()!=0) &&
*(str_storedPassword.length()!=0))*
request.setAttribute("loginSuccessful", new String("true"));
request.getRequestDispatcher("ACPData.jsp").forward(request,response);
else
request.setAttribute("loginSuccessful", new String("false"));
request.getRequestDispatcher("Login.jsp").forward(request,response);
else
request.setAttribute("loginSuccessful", new String("false"));
request.getRequestDispatcher("Login.jsp").forward(request,response);
and my ACPData.jsp is like this :
*<%*
System.out.println("Before clearing the cache");
response.setHeader("Cache-Control","no-cache");
response.setHeader("Pragma","no-cache");
response.setHeader("Cache-Control","no-store");
response.setDateHeader("Expires", -1);
response.setDateHeader("max-age",0);
response.setHeader("Pragma", "public");
System.out.println("after clearing the cachessss");
*%>*
*<%*
try
System.out.println("Session id in Data.jsp "+session.getId()+" "+session.getCreationTime());
Statement stmt=null;
stmt= new MakeConnectionUtility().connection();
ResultSet rs=stmt.executeQuery("select from acp_data limit 0,10");*
*while(rs.next())*
*%>*
*<tr>*
*<td width="15%"><center><%=rs.getString(1)%></center></center></td>*
*<td width="20%"><center><%=rs.getString(2)%></center></td>*
*<td width="20%"><center><%=rs.getString(3) %></center></td>*
*<td width="34%"><center><%=rs.getString(4) %></center></td>*
*</tr>*
*<%*
*catch(Exception e)*
*e.printStackTrace();*
*out.println("Exception in getting resultset : " + e);*
*%>*
and in Login.jsp i am doing like this :
*<%*
*if(request.getParameter("logout")!= null)*
*if (request.getParameter("logout").equals("true"))*
*System.out.println("Logout trueeeeeee");*
*out.println("Enter Your user id and password");*
*System.out.println("Session id in Login.jsp "+session.getId()+" "+session.getCreationTime());*
*session.invalidate();*
*//session.setAttribute("logout", new String("true"));*
*if(request.getAttribute("loginSuccessful")!=null)*
*if(request.getAttribute("loginSuccessful").equals("false"))*
*%>*
*Wrong User name or Password. Please try Again.*
*<%*
*else*
*%>*
*Enter your user id and password*
*<%*
*%>*
In my first request i am getting a url *"http://localhost/ACP/Servlet.do*" and it takes me to the "ACPData.jsp" after successful login. From there when i pressed logout i am getting a url *"http://localhost/ACP/Login.jsp?logout=true"* in my browser and it takes me to the Login screen where it is asking me to relogin and its working fine. But when i presed back button it is asking ur session has expired(as i have set the header response.setDateHeader("max-age",0); for IE only) and i am getting a url *"http://localhost/ACP/Servlet.do"* and here if i press "Refresh" button it is taking me to the ACPData.jsp which should not happen. I also checked there is only one session through out the application(in all files ie servlet and JSP) and also i am invalidating the session after "logout" and there is no data. i also set the http header in html like this
*<head>*
*<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">*
*<meta http-equiv="cache-control" content="max-age=0, must-revalidate, no-cache, no-store, private">*
*<meta http-equiv="Expires" CONTENT="0">*
*<meta http-equiv="Cache-Control" CONTENT="no-cache">*
*<meta http-equiv="Pragma" CONTENT="no-cache">*
*<title>WelCome to Smart Cathodic Protection</title>*
*</head>*
but even after that also same problem is persisting. Can anybody plz help me in this regard
Thanks in advance

Hi minal Thanks for ur reply. I have tried with Java Script but after logging out if i copy the url and paste it in a new window(browser) its again taking me to the data page.

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We are experiencing a problem that is confounding and frustrating us (I have
 a felling that it is something exremely minor that we are overlooking).
 Here goes:
 Context:
 The problem only occurs when using a netscape browser against weblogic
 4.51running on our Solaris 7 box (Everything works fine through IE, and
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There is a property in the weblogic.properties file that lets you set
 the cookie name. If this isn't set, the port will be appended as part of
 the name. I've had a similar problem switching between http and https
 and losing sessions.
 Carles
 Jeremy wrote:
 >
 > in the link tothe servlet the URL had a :80 in it. This was because the url
 > was generated by a JSP page so that when it was moved from server to server
 > and port to port the code wouldn't have to be changed. Unfortuneately,
 > Netscape sucks and takes this to mean that x.x.x.x and x.x.x.x:80 are
 > different and won't acknowledge the cookie from the JSP pages (x.x.x.x) to
 > the servlet (x.x.x.x:80). Thanks fpr your help.
 >
 > Jeremy <[email protected]> wrote in message
 > news:[email protected]...
 > > my mistake, it appears to always happen on port 80 regardless of the
 > server
 > > it is on.
 > >
 > > Jeff Martin <[email protected]> wrote in message
 > > news:[email protected]...
 > > > It really sounds like your servlet is making a new session, even though
 > > > isNew() doesn't say so. What you might try to do is use session.getId()
 > > > to print out the session ID from your jsp pages as well as your servlets
 > > > to determine if it really is a new session.
 > > >
 > > > Do your servlets and JSPs both use the same scheme (http or https) or
 > > > cookie.setSecure()? Do your cookies use domains or paths in either
 > > > servlets or jsps (cookies can be restricted to certain subdirectories
 > > > which might be different between jsps and servlets)? Are you testing
 > > > through a proxy or firewall, or does either browser have different proxy
 > > > settings than the others?
 > > >
 > > > Jeff
 > > >
 > > > Jeremy wrote:
 > > > >
 > > > > We are experiencing a problem that is confounding and frustrating us
 > (I
 > > have
 > > > > a felling that it is something exremely minor that we are
 > overlooking).
 > > > > Here goes:
 > > > >
 > > > > Context:
 > > > > The problem only occurs when using a netscape browser against weblogic
 > > > > 4.51running on our Solaris 7 box (Everything works fine through IE,
 > and
 > > > > through both browsers against our development machines which are on
 > NT)
 > > > >
 > > > > Problem:
 > > > > We have a bunch of JSP pages and servlets that are used togehter
 > > throughout
 > > > > our site. They both manage session information for the user. What is
 > > > > happening is that there is no problem maintaining session information
 > > among
 > > > > all the JSP pages, but when we hit a servlet that we use to stream
 > > graphs
 > > > > back to the browser, it gets the session but it has no contents all of
 > a
 > > > > sudden. What seems to be even more strange is that the session is not
 > > > > tagged as new (by checking isNew()), it is just empty of the contents
 > > that
 > > > > were placed it by the JSP pages. Again, this is only occurring from
 > > > > Netscape browsers against our Solaris server.
 > > > >
 > > > > If anyone can provide any help it would be greatly appreciated. I can
 > > > > provide more details if need be.
 > > > >
 > > > > Jeremy
 > >
 > >

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// Retrieve the parameters that the user entered into the logon fields.
 user name and password come from here from the above html form into the jsp here. Ted Is this what you are asking for where does the username and password come from
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I have a problem regarding java session management.
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Since user in logging again from the same machine so i think invalidating the previous session won't work.
Suppose user opens first instance of the mozilla browser and login as say 'ashok' whose role is normal user now he opens another instance of mozilla by clicking on executable and login as 'mitch' whose role is admin then after successful login of 'mitch' on first window mitch's menus items are getting displayed instead of ashok's.
What i am doing is,
While creating new session on login i first check is any existing session available in above case its true
session = request.getSession(false); //return session if already exists
System.out.println("Session object: "+session);
if(session != null)
System.out.println("Session ID Old: "+session.getId());
session.invalidate(); //invalidate the session if already exists
session = request.getSession(true); //Create new session
System.out.println("Session ID New: "+session.getId());
so control will go inside the if block, here i first invalidate the existing session (this is not destroying the session but only unbinding the information that was stored in the session) and create new session (this is returning the same session which was already exists) and save mitch's information. Since the previous instance was using the same session that will now get the mitch's information so now both instances will show the mitch's information.
I am not getting any way to destroy the existing session so next time new session id will get generated.

Firefox 5 on Win7: All my plugin buttons have gone from the toolbar. They are not in the customise pane. Session manager offers the correct sessions but opens with last session instead. I've re-installed % and reset toolbars. Help!

Win 7
Firefox 5
Problem with high memory use.
restarted
Plugin buttons gone from toolbar/
Missing plugins still show in plugin manager but buttons missing from toolbar add buttons pane.
Tried reset toolbars - no difference.
Tried re-instal of Firefox 5 - no difference except:
Session manager offers correct session on startup but starts with last session

In case you are using "Clear history when Firefox closes":
*do not clear the Browsing History
*Firefox > Preferences > Privacy > Firefox will: "Use custom settings for history": [X] "Clear history when Firefox closes" > Settings
*https://support.mozilla.org/kb/remove-browsing-search-and-download-history
Note that clearing "Site Preferences" clears all exceptions for cookies, images, pop-up windows, software installation, passwords, and other website specific data.
You can check for problems with the sessionstore.js and sessionstore.bak files in the Firefox profile folder that store session data.
*Help > Troubleshooting Information > Profile Directory: Show Folder (Linux: Open Directory; Mac: Show in Finder)
*http://kb.mozillazine.org/Profile_folder_-_Firefox
*http://kb.mozillazine.org/Multiple_profile_files_created
Deleting sessionstore.js will cause App Tabs and Tab Groups and open and closed (undo) tabs to get lost and you will have to recreate them (make a note or bookmark them if possible).

Bug in session manager. If you work for Sun, please take a look.

While evaluating what it would take to transition from Iplanet 6 to Sun Webserver 6.1, I found a problem with the Sun Webserver's s1ws60 session managers. If the page is not explicitly flushed before ending, the session cookie JSESSIONID is never sent. So as long as the user continues to visit small pages, they keep getting new sessions (because they are never sent a session id, so the session manager creates a new one every time they visit). The session cookie is sent if larger pages are visited (the buffer is automatically flushes). The session cookie is also sent if out.flushBuffer() is explicitly called within the JSP. This problem was not present in IWS6.0.
The problem has been tracked down to a combination of the code in com.iplanet.server.http.session.IWSSessionManager (found in the "plugins" directory) and the JSP's Java code generated by a component of the webserver (Catalina?). Under Iplanet, the code generated in the finally{} section of the JSP first flushed the buffer, then called releasePageContext. Under Sun Webserver, the code generated just calls releasePageContext without explicitly flushing the buffer before the call. When flushing the buffer for a non-committed response, the headers are first generated and sent, along with any cookies, including the session cookie. The server only sends the session cookie if, among other things, the session satisfies "_session.isNew()". The order of events in releasePageContext ensures that this is never true when used in combination with IWSSessionManager. I don't have the source code to verify this, but from experimentation I think this is the reason: Before the buffer is flushed, the session is saved by IWSSessionManager.update(session), which at line 498 calls "sn.unsetNew()". So the session is never isNew() when it gets around to sending the session cookie. This can be resolved by either adding an explicit buffer flush to the finally{} section of the JSP, or removing the unsetNew() call from IWSSessionManager. Since I don't know where the code that generates the JSP is (or if I can even change it), I ended up removing the sn.unsetNew() call from the update() function.
Here's the code generated in the finally{} section using IWS6 and Sun Webserver:
Iplanet 6
        } finally {
            if (out != null && (out instanceof org.apache.jasper.runtime.JspWriterImpl)) {
                ((org.apache.jasper.runtime.JspWriterImpl) out).flushBuffer();
            if (_jspxFactory != null) _jspxFactory.releasePageContext(pageContext);
        }Sun Webserver
        } finally {
            _jspx_releaseTags(_jspx_curTag, null);
            if (_jspxFactory != null) _jspxFactory.releasePageContext(pageContext);
        }

I posted a bug report on this.

JMF error - Format of Stream not supported in RTP Session Manager

java.io.IOException: Format of Stream not supported in RTP Session Manager
at com.sun.media.datasink.rtp.Handler.open(Handler.java:139)
why this erro occors?
I already created the DataSink.
When I try to do this...
dsk.open(); //here the error got
dsk.start(); Code of server of media
I want to sent audio (wav) like a radio, but from file. Without stop to send streaming. PullBufered
*Class Server that you offers Streaming of midia
public class Servidor {
private MediaLocator ml;
private Processor pro;
private javax.media.protocol.DataSource ds;
private DataSink dsk;
private boolean codificado = false;
//start the server service, passing the adress of media
// ex: d:\music\music.wav
// pass the ip and port, to make a server works
public void iniciarServicoServidor(String end,String ip, int porta)
try {
//capture media
capturarMidia(end);
//creates processor
criarProcessor();
// configure the processor
configurarProcessor();
//setContent RAW
descreverConteudoEnviado();
//format the media in right RTP format
formatRTP();
//creat the streaming
criarStreaming();
//configure the server
configurarServidor(ip, porta);
//in this method raise the excepition
iniciarServidor();
//when I try to open the DataSink.open() raises the exception
//java.io.IOException: Format of Stream not supported in RTP Session //Manager
// at com.sun.media.datasink.rtp.Handler.open(Handler.java:139)
} catch (RuntimeException e) {
System.out.println("Houve um erro em iniciarServicoServidor");
e.printStackTrace();
public void capturarMidia(String endereco)
try {
System.out.println("**************************************************************");
System.out.println("Iniciando processo de servidor de multimidia em " + Calendar.getInstance().getTime().toString());
ml = new MediaLocator("file:///" + endereco);
System.out.println("Midia realizada com sucesso.");
System.out.println ("[" + "file:///" + endereco +"]");
} catch (RuntimeException e) {
System.out.println("Houve um erro em capturarMidia");
e.printStackTrace ();
public void criarProcessor()
try {
System.out.println("**************************************************************");
pro = Manager.createProcessor(ml);
System.out.println("Processor criado com sucesso.");
System.out.println("Midia com durcao:" + pro.getDuration().getSeconds());
} catch (NoProcessorException e) {
System.out.println("Houve um erro em criarProcessor");
e.printStackTrace();
} catch (IOException e) {
System.out.println ("Houve um erro em criarProcessor");
e.printStackTrace();
public void configurarProcessor()
try {
System.out.println("**************************************************************");
System.out.println("Processor em estado de configura��o.");
pro.configure();
System.out.println("Processor configurado.");
} catch (RuntimeException e) {
System.out.println("Houve um erro em configurarProcessor");
e.printStackTrace();
public void descreverConteudoEnviado()
try {
System.out.println("**************************************************************");
pro.setContentDescriptor(new ContentDescriptor(ContentDescriptor.RAW));
System.out.println("Descritor de conteudo:" + pro.getContentDescriptor().toString());
} catch (NotConfiguredError e) {
System.out.println("Houve um erro em descreverConteudoEnviado");
e.printStackTrace();
private Format checkForVideoSizes(Format original, Format supported) {
int width, height;
Dimension size = ((VideoFormat)original).getSize();
Format jpegFmt = new Format(VideoFormat.JPEG_RTP);
Format h263Fmt = new Format(VideoFormat.H263_RTP);
if (supported.matches(jpegFmt)) {
// For JPEG, make sure width and height are divisible by 8.
width = (size.width % 8 == 0 ? size.width :
(int)(size.width / 8) * 8);
height = (size.height % 8 == 0 ? size.height :
(int)(size.height / 8) * 8);
} else if (supported.matches(h263Fmt)) {
// For H.263, we only support some specific sizes.
if (size.width < 128) {
width = 128;
height = 96;
} else if ( size.width < 176) {
width = 176;
height = 144;
} else {
width = 352;
height = 288;
} else {
// We don't know this particular format. We'll just
// leave it alone then.
return supported;
return (new VideoFormat(null,
new Dimension(width, height),
Format.NOT_SPECIFIED ,
null,
Format.NOT_SPECIFIED)).intersects(supported);
public void formatRTP()
try {
// Program the tracks.
TrackControl tracks[] = pro.getTrackControls();
Format supported[];
Format chosen;
for (int i = 0; i < tracks.length; i++) {
Format format = tracks.getFormat();
if (tracks[i].isEnabled()) {
supported = tracks[i].getSupportedFormats();
// We've set the output content to the RAW_RTP.
// So all the supported formats should work with RTP.
// We'll just pick the first one.
if (supported.length > 0) {
if (supported[0] instanceof VideoFormat) {
// For video formats, we should double check the
// sizes since not all formats work in all sizes.
chosen = checkForVideoSizes(tracks[i].getFormat(),
supported[0]);
} else
chosen = supported[0];
tracks[i].setFormat(chosen);
System.err.println("Track " + i + " is set to transmit as:");
System.err.println(" " + chosen);
codificado = true;
} else
tracks[i].setEnabled(false);
} else
tracks[i].setEnabled(false);
} catch (RuntimeException e) {
// TODO Auto-generated catch block
e.printStackTrace();
public void tocar()
pro.start();
public void criarStreaming()
try {
System.out.println("**************************************************************");
if (codificado)
System.out.println("Midia codificada...");
System.out.println("Processor entra em estado de realize.");
pro.realize();
System.out.println("Processor realized.");
System.out.println("Adquirindo o streaming a ser enviado.");
ds = pro.getDataOutput();
System.out.println("Streaming adquirido pronto a ser enviado.");
} catch (NotRealizedError e) {
System.out.println("Houve um erro em criarStreaming");
System.out.println(e.getMessage());
e.printStackTrace();
catch (Exception e) {
System.out.println(e.getMessage());
public void configurarServidor(String ip, int porta)
System.out.println("**************************************************************");
String url = "rtp://" + ip + ":" + porta + "/audio/1";
System.out.println("Servidor ira atender em " + url);
MediaLocator mml = new MediaLocator(url);
System.out.println("Localizador de midia ja criado");
try {
System.out.println("Criando um DataSink a ser enviado.");
dsk = Manager.createDataSink(ds, mml);
System.out.println("DataSink criado.");
} catch (NoDataSinkException e) {
e.printStackTrace();
public void iniciarServidor()
try {
System.out.println("**************************************************************");
dsk.open();
System.out.println("Servidor ligado.");
dsk.start();
System.out.println("Servidor iniciado.");
} catch (SecurityException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
Gives that output console.
All methods are executed but the last doesnt works.
The method that open the DataSink.
What can I do?
Iniciando processo de servidor de multimidia em Sun May 13 22:37:02 BRT 2007
Midia realizada com sucesso.
[file:///c:\radio.wav ]
Processor criado com sucesso.
Midia com durcao:9.223372036854776E9
Processor em estado de configura��o.
Processor configurado.
Descritor de conteudo:RAW
Midia codificada...
Processor entra em estado de realize.
Processor realized.
Adquirindo o streaming a ser enviado.
Streaming adquirido pronto a ser enviado.
Servidor ira atender em rtp://127.0.0.1:22000/audio/1
Localizador de midia ja criado
Criando um DataSink a ser enviado.
streams is [Lcom.sun.media.multiplexer.RawBufferMux$RawBufferSourceStream;@a0dcd9 : 1
sink: setOutputLocator rtp://127.0.0.1:22000/audio/1
DataSink criado.
Track 0 is set to transmit as:
unknown, 44100.0 Hz, 16-bit, Stereo, LittleEndian, Signed, 176400.0 frame rate, FrameSize=32 bits
java.io.IOException: Format of Stream not supported in RTP Session Manager
at com.sun.media.datasink.rtp.Handler.open(Handler.java:139)
at br.org.multimidiasi.motor.Servidor.iniciarServidor(Servidor.java:291)
at br.org.multimidiasi.motor.Servidor.iniciarServicoServidor(Servidor.java:43)
at br.org.multimidiasi.motor.ConsoleServidor.main(ConsoleServidor.java:30)
Since already thanks so much.
Exactally in this method raises erros.
Ive tried another formats (avi, mp3) but all with the same error, what I can do?
[code] public void iniciarServidor()
try {
System.out.println("**************************************************************");
dsk.open();
System.out.println("Servidor ligado.");
dsk.start();
System.out.println("Servidor iniciado.");
} catch (SecurityException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
Track 0 is set to transmit as:
unknown, 44100.0 Hz, 16-bit, Stereo, LittleEndian, Signed, 176400.0 frame rate, FrameSize=32 bits
java.io.IOException: Format of Stream not supported in RTP Session Manager
at com.sun.media.datasink.rtp.Handler.open(Handler.java:139)
at br.org.multimidiasi.motor.Servidor.iniciarServidor(Servidor.java:291)
at br.org.multimidiasi.motor.Servidor.iniciarServicoServidor(Servidor.java:43)
at br.org.multimidiasi.motor.ConsoleServidor.main(ConsoleServidor.java:30)

unknown, 44100.0 Hz, 16-bit, Stereo,
LittleEndian, Signed, 176400.0 frame rate,
FrameSize=32 bits
java.io.IOException: Format of Stream not supported
in RTP Session Manager
The fact that it doesn't know what the format is
might have to do with the problem. I've had similar
problems, and I've traced it back to missing jars and
codecs. Have you tried running the same code locally
without the transmission to see if you player will
even play the file?Already and it works, I used Player to play it and play normally, I try to make it with the diferents codecs of audio and video, but no sucess.

Problem in session management

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