Sharing sessions between web applications (WAR files)

I am using weblogic 6.1. The opinion I have read indicates that
          sessions cannot be shared between WAR files. That is, I cannot put an
          attribute on the session from a servlet/JSP in one WAR file and read
          it out from the other. The only justification I've seen is "security".
          Now, I find this rather difficult to accept for several reasons:
          1. I cannot fathom what kind of "security" would prevent me from
          sharing the session between two web applications that I wrote myself.
          Let's say I want to write a system that I divide up, for
          modularity/separate deployment purposes, into 5 different WAR files.
          Why should I not be able to just sign on once and pass that logon
          information in the session from one to the other? (I know, I can use
          cookies or URL rewriting - but that doesn't seem to be to be a good
          solution. And if you can share information through cookies, why not
          through sessions?) What about other user information like currently
          selected language?
          2. Several app servers (iPlanet and I have heard two others) allow you
          to share sessions between WARs. Why not weblogic?
          Thanks for any information you can give me. I have not been able to
          find anything in weblogic documentation about this. If I am
          misunderstanding the server capabilities, please enlighten me.
          Thanks,
          <>< gary

http://www.weblogic.com/docs51/classdocs/webappguide.html
          --kumar allamraju
          Grant Lewis wrote:
          > I'm currently evaluating weblogic and I can't find any references in
          > their documentation set stating they support web applications or war
          > files. They explicitly state in their docs the Servlet 2.2 specification
          > has been supported since version 4.5. I'm evaluating version 5.1. Can
          > anybody clear up the confusion for me.
          >
          > Grant

Similar Messages

Sessions across Web Applications (WARs)

I've heard that you can't share session information (http session) across web applications or war files in the j2ee framework. However, I haven't seen any proof of this? I'm struggling to find information telling that I can't do this. Can someone elaborate a bit?
Thanks.

Hi !
It is TOTALLY WRONG that someone wrote here that a
separate JVM is started for each web-app! No way. Run
any appserver and do a 'ps -ef|grep java' and I bet
you will see only one forever :-). Correct
Steve, it is the classloader hierarchy in all
appservers that prevents you from sharing sessions (i
would say classes loaded by various web-apps). There
is something called a web-app / WAR classloader, which
is 4th in the hierarchy of JVm classloader hierarchy.
Since all your web-app loaded classes are loaded by
this classloader and since each web-app has a "peer"
classloader at same level for its own web-app, you
will never be able to share across web-apps. Incorrect, just because you can have separate classloaders for separate web applications does not mean that those web applications cannot share instances.
It is also possible to have classes which are globally available to ALL web applications which are loaded as part of the servlet container. Tomcat versions 4+ have a common area where classes can be made available. These classes are not loaded within the Web Application classloader at all.
Not only that but it is possible to configure web application contexts such that they can also share things like sessions. This feature is definitely part of the Apache Tomcat release and as this is taken by Sun to be the Reference Implementation of the Servlet Container I would assume that is also part of the J2EE Standard as well.
YOu can always use the DB stuff that other genltmen
has already suggested.

Web application .war file

I have a war file with the following structure
index.jsp
WEB-INF/web.xml
WEB-INF/classes (all my servlets here)
WEB-INF/lib (all my application jar files)
The web.xml just defines all the servlets as follows
=================================================
<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE web-app
PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.2//EN"
"http://java.sun.com/j2ee/dtds/web-app_2.2.dtd">
<web-app>
<servlet>
<servlet-name> HtmlServlet </servlet-name>
<servlet-class> <PKG PATH>.HtmlServlet </servlet-class>
</servlet>
<servlet>
<servlet-name> ChartServlet </servlet-name>
<servlet-class> <PKG PATH>.ChartServlet </servlet-class>
</servlet>
<servlet-mapping>
<servlet-name> HtmlServlet </servlet-name>
<url-pattern> /HtmlServlet </url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name> ChartServlet </servlet-name>
<url-pattern> /ChartServlet </url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>
=======================================
WHen I run my application, the index.jsp starts compiling
and throws an error
java.lang.NoClassDefFoundError: org/omg/CORBA/ORB
This class is in one of the jar files in my WEB-INF/lib folder.
What am I missing? Do I have to declare something in my web.xml file or do I need to put that in weblogic.xml? Currently I dont
have any weblogic.xml file.
Thanks,
Bharat Nagwani

Hi Michael,
I am having the same problem. can you provide more information. I was not
able to find out the answer in the servlet 2.2 specification.
Thanks,
Rob
Michael Girdley wrote:
I believe that you need to register your helper classes in the Web.XML file
in your Web application. Check out the servlet 2.2 specification for more
information.
Thanks,
Michael
Michael Girdley
BEA Systems
Learning WebLogic? http://learnweblogic.com
"bharat nagwani" <[email protected]> wrote in message
news:3a71da38$[email protected]..
I have a war file with the following structure
index.jsp
WEB-INF/web.xml
WEB-INF/classes (all my servlets here)
WEB-INF/lib (all my application jar files)
The web.xml just defines all the servlets as follows
=================================================
<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE web-app
PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.2//EN"
"http://java.sun.com/j2ee/dtds/web-app_2.2.dtd">
<web-app>
<servlet>
<servlet-name> HtmlServlet </servlet-name>
<servlet-class> <PKG PATH>.HtmlServlet </servlet-class>
</servlet>
<servlet>
<servlet-name> ChartServlet </servlet-name>
<servlet-class> <PKG PATH>.ChartServlet </servlet-class>
</servlet>
<servlet-mapping>
<servlet-name> HtmlServlet </servlet-name>
<url-pattern> /HtmlServlet </url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name> ChartServlet </servlet-name>
<url-pattern> /ChartServlet </url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>
=======================================
WHen I run my application, the index.jsp starts compiling
and throws an error
java.lang.NoClassDefFoundError: org/omg/CORBA/ORB
This class is in one of the jar files in my WEB-INF/lib folder.
What am I missing? Do I have to declare something in my web.xml file or doI need to put that in weblogic.xml? Currently I dont
have any weblogic.xml file.
Thanks,
Bharat Nagwani

Deploying Java Web Application (WAR-File) into a cluster environment

Hi,
we have a web application which has to read from and write to the file system.
Since a short time we have a cluster environment (2 parallel servers) and since thisa time we have the problem, that files are worked double in the cluster. The application is working on both servers now and so we have this problem.
Does anybody know how we have to deploy the application correctly in a cluster environment or do we have to change anything in our source code of the application?
I didn't find any documentation about this.
At the moment we have deployed the application on one of the two servers only, but I think there must be a better way to solve this problem.
Thanks for your replies.
Regards
Thorsten

Hi,
I think first you need to wrap it into an EAR file, then you can deploy it.
As far as I know standalone deployment of WAR is deprecated as of 640.
similar threads:
How to deploy .war on NWDI
Deploying an existing WAR file into the Portal
Hopefully this tutorial also gives some idea:
http://help.sap.com/saphelp_nw70ehp1/helpdata/en/70/13353094af154a91cbe982d7dd0118/frameset.htm
Regards,
Ervin

How to deploy web application .war file into SAP NetWeaver Engine?

Hi All,
I want to deploy web application which is developped using JAVA web technology into SAP netweaver Engine.
I tried to deploy .war file through SDM but it complained the following error
- Hide quoted text -
"Error loading archive
C;\Document and Settings\cr1adm\Desktop\MyProject.war
(server side name is: F:\usr\sap\JR1\JC01\SDM\program\temp\MyProject.war)
com.sap.sdm.util.sduread.IIIFormattedSduFileException: The information about development component found in the manifest is either missing or incomplete!
Manifest attributes are missing or have badly formatted value:
attribute keylocation missing
attribute keyname is missing
attribute keyvendor is missing
attribute keycounter is missing
(F:\usr\sap\JR1\JC01\SDM\program\temp\MyProject.war)"
Can any one please suggest how to deploy external web application into SAP netweaver engine.
Is there any procedure to follow to do this.
your inputs will be highly appreciated...
Thanks in advance

Hi,
I think first you need to wrap it into an EAR file, then you can deploy it.
As far as I know standalone deployment of WAR is deprecated as of 640.
similar threads:
How to deploy .war on NWDI
Deploying an existing WAR file into the Portal
Hopefully this tutorial also gives some idea:
http://help.sap.com/saphelp_nw70ehp1/helpdata/en/70/13353094af154a91cbe982d7dd0118/frameset.htm
Regards,
Ervin

How to deploy my web application .war file into SAP netweaver Engine

Hi All,
I want to deploy web application which is developped using JAVA web technology into SAP netweaver Engine.
I tried to deploy .war file through SDM but it complained the following error
"Error loading archive
C;\Document and Settings\cr1adm\Desktop\MyProject.war
(server side name is: F:\usr\sap\JR1\JC01\SDM\program\temp\MyProject.war)
com.sap.sdm.util.sduread.IIIFormattedSduFileException: The information about development component found in the manifest is either missing or incomplete!
Manifest attributes are missing or have badly formatted value:
attribute keylocation missing
attribute keyname is missing
attribute keyvendor is missing
attribute keycounter is missing
(F:\usr\sap\JR1\JC01\SDM\program\temp\MyProject.war)"
Can any one please suggest how to deploy external web application into SAP netweaver engine.
Is there any procedure to follow to do this.
your inputs will be highly appreciated...
Thanks in advance
JM

You may need to convert the .war archive to SDA/SCA file format before deploying it to SAP Netweaver Engine.
Check out the below SAP NOTE if it is usefull.
Note 1223957 - Usage of NetWeaver Packaging Tool.
Apart from SDM you can also deploy the files through telnet...
Note 859444 - How to deploy libraries on J2EE Engine 6.40
1)Connect to telnet as below
Start --> Run
telnet hostname/ip address portno
Ex: telnet xxx.xx.xx.x 5<Instance no>08
2)Login with administrator id:
Use the below command to deploy the files.
deploy <directory path to the SDAs location> version_rule=all on_prerequisite_error=stop on_deploy_error=stop
Example: deploy E:\usr\sap\trans\EPS\in\VCBASE03_0-10006939.SCA version_rule=all on_prerequisite_error=stop on_deploy_error=stop.
Also have a look at this note which talks about the error you are getting.
Note 1171457 - IllFormattedSduManifest/SduFileException during deployment
Hope it helps.
Edited by: Khaiser Khan Mohammed on Nov 7, 2010 12:17 PM

How to deploy fusion web application war file on weblogic

Hi
I am new to ADF. Please let me know how to create war file and the steps for deployment of war file . Its very urgent...

Unresolved Webapp Library references for "ServletContext@1289849542[app:ws_ear module:WSAEEAPP-ViewController-context-root path:/WSAEEAPP-ViewController-context-root spec-version:2.5]", defined in weblogic.xml [Extension-Name: jsf, Specification-Version: 2, exact-match: false]
Specify the JSF library in the config.xml file
<library> <name>[email protected]_2-0-2</name> ... </library>
Refer the library in weblogic.xml
<library-ref> <library-name>jsf</library-name> <specification-version>2.0</specification-version> <implementation-version>1.0.0.0_2-0-2</implementation-version> <exact-match>true</exact-match> </library-ref>
The implementation version may be different.

Session sharing among different web application under Oracle AS

Hi,
I'm looking for some information on web application session information sharing under Oracle AS10.1.3.
any pointers are highly appreciated.
Thanks,
Narasimha.

Hello,
I see that you have duplicate your post in different forums, Session sharing among different web application under Oracle AS10.1.3.
Regards
Tugdual Grall

ClassNotFound Error while accessing Shared Libarary from Web Service WAR

Hi All,
I have developed a JAX-WS based Web Service(WAR file) using Jdeveloper 11g and deployed it to Web Logic 10.3.4 server. My web service requires access to a shared library(a JAR file ) which is already deployed on the server. So, I had modified the MANIFEST.MF file to have the reference to shared library as a
optional package(since my web service is WAR) as below.
Manifest-Version: 1.0
Extension-List: bizlib
bizlib-Extension-Name: biz_lib
bizlib-Implementation-Version: Oracle Version 1.1
The biz_lib is the Name of the library as seen in the Deployments section of the Web Logic Admin Console. Since there is no extension name given explicitly in the MANIFEST file of shared library, I have mentioned the name as seen in the deployments for the library. After deploying my WAR, when I go into the details of the Shared Library - biz_lib, the Admin console shows my web Service as part of - "Applications that reference this Library" section. So, I presume that my Manifest is correct. But when I test my web service from Admin Console, I face - java.lang.NoClassDefFoundError. The class that is pointed out as part of the error is part of the referenced Shared Library - biz_lib ( part of a JAR file that is listed in the Class-Path: section of shared library’s MANIFEST file). My Web Application is unable to find the class files in the shared library. Please help me. Please let me know any further information is required.
Regards,
Ram

          I am not sure if this helps. I encountered a similar problem and
          finally resolved it. Initially I got the error 500 - Internal
          Server error, and was not able to access my servlet which I deployed
          using .war file.
          We should make sure that the directory structure under
          WEB-INF/classes directory should reflect the package that
          your servlet belongs to. I had a HelloWorld servlet with
          the statement "package examples.servlets;" on the first line.
          So after compiling this servlet, the HelloWorld.class file
          should be copied into WEB-INF/classes/examples/servlets directory
          and not into WEB-INF/classes directory. After making this change,
          I made a new .war file and that fixed the problem.
          -Balaji.
          "san" <[email protected]> wrote:
          >
          >Hi,
          >
          > i depolyed a WAR file into WL 5.1 as a unzipped file,
          >and when i tried to access sevlet it din't come up, i got a error
          >"404 file not found,"
          >
          >my servlet classes are in WEB_INF/classes directory and i have register
          >the servlet
          >in WEB.xml file
          >
          >but still i couldn't access any servlet from my webApp ie WAR file ,
          >
          >can anyone help me out, Thanks in advance

Passing Objects Between Web Applications

Hello, I have a question in which I have posted in several different forums. I'm hoping that someone may be able to help me with this.
I have a JSP "application" in which I several WAR files that contain different portions of the application. The logic is in place that each application is in separate WAR file for SCM. For the purpose of getting help, I will only concentrate on two different WAR files and a JAR file, which is located in the <TOMCAT_HOME>/lib directory.
The JAR file contains a couple of classes which hold generic information that is used between all of the different subapplications.
ASD.war: contains a couple of files for the master application that links different sub-applications that a user has access to. This WAR file is what is initially loading the JAR file with the information.
* Login.html: Prompts user for username/password and forwards to login.jsp
* Login.jsp: verifies that above is a valid database user and loads the JAR's class with relevent information and if so, loads up contents.jsp
* Contents.jsp: shows a list of applications that the user has access to. It contains hyperlinks to different applications (WAR files).
SCR.war: contains an application that tries to use the loaded variables/values from the JAR file supplied/populated by the ASD.war application
* SCR_Role.jsp: contains the different roles in which the logged in user has priviledges to. It tries to utilize the username/password that was populated in the Login.jsp (ASD.war).
The problem, of course, is that the reference to the JAR class doesn't exist for the SCR application. I have tried this with using static variables, which works. But of course this is not wise or pratical for a multi-user use of the application(s).
Can anyone suggest things that I may try. Right now, I'm getting near to suppling an addition database table that will temporarily be populated with the username/password so that the sub-application can load and remove the record. This would work; I don't want these values being passed repeatedly throughout the life of the session, I would like to pass the reference to the object. By making the table, I would still run into problems whereas I want to pass non-string values to another application.
Thanks for any help that you can provide.
Jim

I think that I may have found a solution... There might be a better way, and maybe this will be able to get someone else thinking about something related...
Ok, I have my jar file which contains now loginInfo & a new staticLoginInfo. My loginInfo contains all of the instance variables; whereas the staticLoginInfo contains static references to the instance class.
ASD.jar - staticLoginInfo.java:
private static Vector reference = new Vector();
public static int setUp(loginInfo login)
int seq = reference.size();
reference.add(seq,login);
return (seq)
public static loginInfo getLogin(String seq)
return ((loginInfo)(reference.get(Integer.parseInt(seq))));
Now I have a war file that contains contents.jsp which contains links to the different applications that the logged in user has access to.
ASD.war - contents.jsp:
seq = staticLoginInfo.setUp(login);
<a href="/SCR/SCR_Role.jsp?seq=<%=seq%>">...
Now my SCR.war file contains SCR_Role.jsp that shows different "roles" that that person has within the application...
SCR.war - SCR_Role.jsp:
loginInfo tLogin = (loginInfo)staticLoginInfo.getLogin((String)request.getParameter("seq"));
login.setUsername(tLogin.getUsername());
login.setPassword(tLogin.getPassword());
login.setDatabase(tLogin.getDatabase());
Believe it or not, this works. I thought that I would be able to just put login = (loginInfo)staticLoginInfo..., and this works for each page that I put this in; but by setting a temporary variable (tLogin), it carries throughout the rest of the application...
Thanks for all the help for those that tried...
Jim
</a>

Using web start to deploy a web-application WAR

I am planning to develope a web-application, that will run in my clients as localhost. My client will have a Tomcat server, and he can run that application in his own computer without Internet.
By times, and when he have access to Internet, i would like that he check the new version of that application(WAR file) in my Server, and if there is new version, then he will update the application (WAR file).
Is there any possibilite that I can use Web Start to deploy WARs directly tomcat/webapps/ ??
In all documentation of web start, they use for *.JAR. but there is no place where say that I can't use web start for WebApplication.

Not that I'm aware of.
You can upload your new WAR to his Tomcat server if you have access to /manager/html on his Tomcat.

How to share the same session between JNLP Application and browser session

How to share the same session between JNLP Application and browser session using BasicService.showDocument(url) method? It appears whenever i launch any URL from within a JNLP application using BasicService.showDocument(url) , it creates new instance of browser and session even after i used cooke handlers to restore JSESSIONID and Ltpa token etc.
public static int showDocument(String urlToOpen)
BasicService obj = (BasicService) ServiceManager.lookup("javax.jnlp.BasicService");
obj.showDocument(urlToOpen);
}

Try using Reflection

Not able to clear session of web application running inside wpf browser control

Hi,
I have used below code to clear session of web application running inside wpf browser control .
[DllImport("wininet.dll", SetLastError = true)]
private static extern bool InternetSetOption(IntPtr hInternet, int dwOption, IntPtr lpBuffer, int lpdwBufferLength);
InternetSetOption(IntPtr.Zero, INTERNET_OPTION_END_BROWSER_SESSION, IntPtr.Zero, 0);
This code is working in Windows 8 but it is not working in windows 7 and windows 8.1.
I want to know why it is not working and how to make it work in windows 7 and windows 8.1
Please help.
Thanks & Regards,
Pritesh

Hi,
I have used below code to clear session of web application running inside wpf browser control .
[DllImport("wininet.dll", SetLastError = true)]
private static extern bool InternetSetOption(IntPtr hInternet, int dwOption, IntPtr lpBuffer, int lpdwBufferLength);
InternetSetOption(IntPtr.Zero, INTERNET_OPTION_END_BROWSER_SESSION, IntPtr.Zero, 0);
This code is working in Windows 8 but it is not working in windows 7 and windows 8.1.
I want to know why it is not working and how to make it work in windows 7 and windows 8.1
Please help.
Thanks & Regards,
Pritesh

Can't record web session in Web Application Transaction Monitoring using IE10 (Tried under Windows Server 2008R2 and 2012)

Hi,
In Operations Manager Console 2012 SP1 including RU2 I am trying to record a web session in Web Application Transaction Monitoring.
I have check that:
The add-on (Microsoft Web Recorder Helper) 64bit is Enabled.
The 64bit version of IE10 is running/launched. See this link for how to modify your registry key if needed: http://kevingreeneitblog.blogspot.co.uk/2012/01/scom-2012-recording-web-browser-session.html
I have tried both on a Windows 2008R2 and 2012 server, but the recorder is not showing up as can been seen from Kevin's Blog (link above).
Any Ideas?

I managed to get this working on both Windows 8 IE10 and server 2012 IE10. Tested on SCOM 2012 SP1 UR2 and UR3. I've done this process in lab and production several times so hopefully this helps you out.
Checklist:
1. Ensure that the 64bit IE10 is launching when the "start web-capture" is started in SCOM.
2. Enable IE10 internet options:
a: Advanced - Security - Enable Enhanced Protected Mode
b: Advanced - Browsing - Enable third-party browser extensions
3. Close all running IE sessions and open the Registry Editor
4. Registry Change (No reboot needed)
- Browse to the following regkey:
HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main
- Add a new DWORD called TabProcGrowth and set it to 0
5. Registry Change (No reboot needed)
- Browse to the following regkey:
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Discardable\PostSetup\Component Categories64\
-You should see two subkeys labeled: (These are the cached BHO IE objects related to the Web Recorder)
{00021493-0000-0000-C000-000000000046}
{00021494-0000-0000-C000-000000000046}
- Delete only the above two mentioned keys (This will force IE to recache them next launch)
6. Try to start the web capture again from SCOM 2012 SP1.
7. When IE10 Launches enable the add-on again if you are prompted.
8. If you still don't see the Web-Recorder pane in IE you can now show it by:
- View - Explorer bars - Web Recorder

Difference Between Web application design and Report Designer

Hi,
I have searched in the forum as well i Google it but still i am not clear the difference between Web application Designer and report Designer , why especially we go for WAD ? and what is not possible in Report designer which we can do in WAD Please some one explain me that would be great helpful to me. i am having lot of confusion in this issue.
thanks,
Gal

Hi,
The Report designer is completely for formating of your query and results. Here you have the flexibility to design your query(one/more) results in your own way.
The WAD is for displaying various web items at one short for a single/multiple query. And here you have the flexibility to do the XML coding on the web items, but not as much you have the flexibility on Report Designer.
But, Report designer will have more performance issues than WAD. So, generally it helps when you need extreme formating of your reports.
Hope this clears your doubt.
Regards,
Srinivas.

Sharing sessions between web applications (WAR files)

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