Servlet definition outside war filr

Hello
I am having question related to packaging servlets. I have ear file, which contains war wile , which contains html files and servlet definition and all needed stuff.
And it is fine for me.
My question is:
is it possible to have ear file with separate war and jar files, where servlet definition is being stored within jar file (as on picture below ) ?
ear--
|
---war
---jar
Regards
Marcin

"maybe", but then in a jar which is present in the WEB-INF/lib of the war, not in a jar that is part of the ear.
Of course nothing can stop you from trying it out, but I'm pretty sure you'll be met with incredibly nasty deployment error messages.

Similar Messages

How to run a Servlet Project's .war from Command Line??

Hi there,,
Can anybody help me with how to run a Servlet Project's .war file from command line??In fact I tried it using the following command,
java -jar TestServProj.war
but I get the following error,,,
Failed to load Main-Class manifest attribute
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Moreover,plz help me about know how to execute a single servlet class from command line...
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you cant run a .war file from command prompt
.war files should be executed in a server
how to execute a single servlet class
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any way you need a server and if you are a beginner Apache tocat will be the best server to start with you can down load it from
http://tomcat.apache.org/

Response Already commited exception while displaying Image outside WAR File

My application contains a JSF page, which is bound to a Spring bean. The UI components state of the JSF page is provided by the Spring bean properties (This means the Spring bean is the backing bean of the JSF page) . My problem is the JSF page also contains a graphicImage meant to display image stored outside the WAR file.
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First thanks for your prompt reply but I am still stuck. Let me get into details. My JSF page is:
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executePhase(RENDER_RESPONSE 6,com.sun.faces.context.FacesContextImpl@f801ef) threw exceptionI am assuming that the image request is going through the FacesServlet. But now my question is how to inform JSF that the response is complete (via FacesContext.responseComplete()) which will enable the ImageServlet to send the image response?

Pre-load servlets from a war-file

Hello,
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          seem to require that the servlet (or application class, respectively)
          are found in the servlet classpath (or the weblogic.class.path,
          respectively), so these mechanisms cannot peek into war-files to find
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          The page http://www.weblogic.com/docs51/classdocs/webappguide.html#dtprops
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          (Optional) This property is not honored by WebLogic Server in this release.
          Is this still valid?
          Is there a workaround?
          When will this element be supported?
          Concerning a possible workaround, I have read:
          > Subject: Re: Pre-load
          > Date: Fri, 19 Nov 1999 14:38:41 -0500
          > From: Jeff Martin <[email protected]>
          > Newsgroups: weblogic.developer.interest.servlet
          > Tom Gerber wrote:
          > >
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          1) Where do I have to put the line into the shell script?
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          3) What is the UNIX utility?
          I am using WL 5.1 (evaluation) under Solaris.
          Any help appreciated,
               Oliver Matz
          | _ \ / \ | __)( ) Oliver Matz, Engineer
          | _/( () )| __) | | fon: +49(0)40/60990-0
          |_| \__/ |___) |_| fax: +49(0)40/60990-113


Yes you can load a java applet form a jar file.
Here is the code for internet explorer.
<body>
     <table align="center" border="1">
          <tr>
               <td>
                    <object classid="clsid:8AD9C840-044E-11D1-B3E9-00805F499D93" width="10" height="10" codebase="/plugin/">
                    <param name="code" value="XXX.class">
                    <param name="archive" value="XXX.jar">
                    </object>
               </td>
          </tr>
     </table>
</body>
</html>
Just replace the XXX.class with the class containing the init() method and XXX.jar with the jar file.

Completing jsp using web pages from outside war

I have a .jsp called Welcome Page. On it, I wish to include the content of another web page that is located outside of the context root. I know the file's location on the server and I know the real URL of the file (it's an html file).
Before I go through any heartache of reinventing the wheel, what, if any, method can I use to accomplsh this? I have already tried
jsp:include...
pageContext.include...
getResourceAsStream...Your help is appreciated.

I am using webSphere server, so this does not directly relate to what I need, but it did offer me a line of thought. Even after reading this, though, I noticed that it was only good for web apps running within the same virtual host.
To give an example, say I have a web page at www.mycompany.com and wish to include the page www.someothercompletelydifferentcompnay.com/info.html
Is there a way to do this?

Different execute queues with different thread priorities

We are running WebLogic 6.1, SP2 on Solaris 2.8 and I have a question related to the
use of Execute queues
I'm aware that the administration console servlets, and the rest of requests given
to the server run in separate execution queues each with their own pool of threads.
There is an <executequeue> element in the config.xml that allows you to change the
parameters of the default execute queue that most requests are handled in.
My question is is it possible to create new execute queues, each with a given number
of threads running at a different priority. Then one could assign a particular WAR
deployment to a queue and hence control the priority that certain requests run at
governed by the deployment that received the initial request.
Essentially the problem that I'm trying to address is that I have a JAR with MDBs
in it. I also have JARs with Entity and Session EJBs and WARs. They are all using
the same pool of threads to execute. I want to be able to throttle the MDBs as they
receive messages so they don't take over the machine and interfere with interactive
use. Now I can limit the number of MDBs in the MDB pool, but then if the machine
is not being used by users, then the machine resources are wasted only allowing one
MDB to be active at a time when there are a lot of messages in the queue.
What I want to be able to do is to have as many MDBs run as I can, up to a certain
limit, say 15 for example, but not to pull from the same thread pool/execute queue
as the requests for URLs in the WAR. Also I want the MDB threads to run at a much
lower priority and always give preference to interactive requests.
So interactive threads will always win and grab the processors if interactive use
is high, but if it's not, the MDBs can run instead.
Regs,
Paul

Hi,
I had a chat with BEA support about my issue. You can create multiple ExecuteQueues
and assign them to servlet definitions in WARs in the web.xml, and with an option
to the EJBC compiler, you can assign a particular class of EJB to an ExecuteQeueue.
For details see http://e-docs.bea.com/wls/docs61/perform/AppTuning.html#1106284
Presumably it's the thread of the initial request that counts, i.e. if a WAR calls
an EJB, then it's the thread in the execute queue of the WAR that will be used right
the way through the request, not that of the EJB being called, assuming they are
both deployed in the same WebLogic instance. If they were in different instances,
you would obviously have a thread from the WAR queue on one instance, and a thread
from the EJB queue on another instance.
If a plain Java command-line client connected directly to an EJB, then it would be
the thread from the ExecuteQueue of the EJB that would get used.
I've been told that MDBs always run in the default queue, so it seems that the way
for me to do what I want is just to create an ExecuteQueue, set the priority of the
threads in this queue to be higher than that of the default queue, and assign this
queue to my WARs. I can leave my EJBs running in the default queue.
Regs,
Paul
"Dimitri I. Rakitine" <[email protected]> wrote:
Don't know about 6.1 (One can find out very easily what the possible config
parameters
are by deploting
http://dima.dhs.org/misc/listMBeans.jsp and
http://dima.dhs.org/misc/showMBean.jsp
abd looking at the XXXConfig mbeans), but in 7.0 there are quite a few
things which
can be tuned in the executequeue config (and priority is one of them. also
interesting
is that it is possible to configure it to increase number of execute threads
when queue
length exceeds some specified threshold) :
QueueLength
Returns the maximum length of this queue.
ThreadPriority
Returns the priority of the threads associated with this queue.
ThreadCount
Returns the number of threads assigned to this queue.
QueueLengthThresholdPercent
Returns the threshold percent for length of this queue, set in QueueLength.
ThreadsIncrease
Returns the number of threads to grow when a queue is within QueueLengthThresholdPercent
of the set QueueLength.
ThreadsMaximum
Returns the maximum number of threads in the pool.
ThreadsMinimum
Returns the minimum number of threads in the pool.
Dimitri

Calling servlets in another jar/war

I am working on an integration project.
I have a war file that has many of the components that I need.
In my new project (Sun Studio IDE), I am trying to call up a servlet that exists in this other war file.
I can mount the war file as a directory, just like mounting a jar for use like classes12.zip whatever or similar to including a jar in your classpath.
Can I call a servlet in another jar, war, or zip file from my existing code?
How will the existing code or jsp know where to find this servlet outside the project?
Usually you have to either map the servlet or set this info in the web.xml, I think.
If the servlet mappings are in the web.xml, does that mean that if I access a servlet in another war, with it's own web.xml, does that mean that I have to map that servlet in my current projects web.xml also?
Thanks

Can I call a servlet in another jar, war, or zip file
from my existing code?
How will the existing code or jsp know where to find
this servlet outside the project?When you say 'call' I assume you mean forward. Yes, you can forward to servlets in other contexts/wars.
If the other context is say 'appB' you can forward the request to a servlet mapped as say '/test' in web.xml of appB in the following way:
getServletContext().getContext("/appB").getRequestDispatcher("/test").forward(request,response);
Usually you have to either map the servlet or set this
info in the web.xml, I think.
If the servlet mappings are in the web.xml, does that
mean that if I access a servlet in another war, with
it's own web.xml, does that mean that I have to map
that servlet in my current projects web.xml also?No. You don't need to map it again. However as you might have noticed, you do need to know the url pattern of the other servlet, so that you can forward properly.
But beware - Session info will not be shared in cross-context forwarding

Unable to deploy a simple servlet using WAR file on Oracle9iAS v9.0.3

Hi All,
I am facing problem while deploying a simple servlet using WAR file on Oracle 9i App Server.
I have installed Oracle9iAS J2EE and Web Cache v9.0.3 on Windows 2000 server.
It includes:
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     - Oracle9iAS Containers for J2EE
     - Oracle9iAS Web Cache
     - Oracle Enterprise Manager
The release of installed Oracle9iAS is Release 2 (9.0.3)
I referred following link to Deploy Applications Using WAR file:
     http://otn.oracle.com/products/ias/daily/sept12.html
As mentioned in this documentation I have followed following steps to deploy WAR file:
1] I have created a war file by name SimpleServlet.war. In SimpleServlet.war, there is a servlet by name Simple which prints time at which servlet was accessed.
2] I have modified <ora9ias_home>\j2ee\home\config\application.xml and added following web module entry:
     <web-module id="SimpleServlet" path="../../home/applications/SimpleServlet.war" />
3] To make this module accessible from over the web, I have modified file
     <ora9ias_home>\j2ee\home\config\default-web-site.xml and added following entry:
     <web-app application="SimpleServlet" name="SimpleServlet" root="/SimpleServlet"/>
4] I saved both the files and started Oracle HTTP Server and accessed page as below:
          http://<server>:7777/SimpleServlet/Simple
where Simple is servlet in SimpleServlet.war file.
In the browser, The page cannot be found is shown to user. I have verified that SimpleServlet.war is extracted to SimpleServlet folder under <ora9ias_home>\j2ee\home\applications folder. I found that Simple.class is stored under WEB-INF/classes folder and web.xml contains correct entry for url pattern for servlet Simple.
What else could be the problem? Am I placing the war file in wrong place or modifying application.xml or default-web-site.xml in a wrong directory?
This is very urgent. Please help me with your valuable comments on this.
Thanks in advance.
Regards,
Sandesh

Hi All,
I am facing problem while deploying a simple servlet
using WAR file on Oracle 9i App Server.
I have installed Oracle9iAS J2EE and Web Cache v9.0.3
on Windows 2000 server.
It includes:
     - Oracle HTTP Server
     - Oracle9iAS Containers for J2EE
     - Oracle9iAS Web Cache
     - Oracle Enterprise Manager
The release of installed Oracle9iAS is Release 2
(9.0.3)
I referred following link to Deploy Applications
Using WAR file:
     http://otn.oracle.com/products/ias/daily/sept12.html
As mentioned in this documentation I have followed
following steps to deploy WAR file:
1] I have created a war file by name
SimpleServlet.war. In SimpleServlet.war, there is a
servlet by name Simple which prints time at which
servlet was accessed.
2] I have modified
<ora9ias_home>\j2ee\home\config\application.xml and
added following web module entry:
<web-module id="SimpleServlet"
path="../../home/applications/SimpleServlet.war" />
3] To make this module accessible from over the web,
I have modified file
<ora9ias_home>\j2ee\home\config\default-web-site.xml
and added following entry:
<web-app application="SimpleServlet"
name="SimpleServlet" root="/SimpleServlet"/>
4] I saved both the files and started Oracle HTTP
Server and accessed page as below:
          http://<server>:7777/SimpleServlet/Simple
where Simple is servlet in SimpleServlet.war file.
In the browser, The page cannot be found is shown to
user. I have verified that SimpleServlet.war is
extracted to SimpleServlet folder under
<ora9ias_home>\j2ee\home\applications folder. I found
that Simple.class is stored under WEB-INF/classes
folder and web.xml contains correct entry for url
pattern for servlet Simple.
What else could be the problem? Am I placing the war
file in wrong place or modifying application.xml or
default-web-site.xml in a wrong directory?
This is very urgent. Please help me with your
valuable comments on this.
Thanks in advance.
Regards,
SandeshHave you restarted you http server and then tried to load it again? Are you using the right port; maybe you have to use port 7778? Check you server settings in the http server instance. Also check your url binding of you application at Farm > Application Server: infrastructurehost > OC4J_instance > Application: appname > Web Module: modulename
Good luck!
rgds Thomas

Unable to deploy a simple servlet using WAR file

Hi All,
I am facing problem while deploying a simple servlet using WAR file on Oracle 9i App Server.
I have installed Oracle 9i App Server. I referred following link to Deploy Applications Using WAR file:
     http://otn.oracle.com/products/ias/daily/sept12.html
As mentioned in this documentation I have followed following steps to deploy WAR file:
1] I have created a war file by name SimpleServlet.war. In SimpleServlet.war, there is a servlet by name Simple which prints time at which servlet was accessed.
2] I have modified <ora9ias_home>\j2ee\home\config\application.xml and added following web module entry:
     <web-module id="SimpleServlet" path="../../home/applications/SimpleServlet.war" />
3] To make this module accessible from over the web, I have modified file
     <ora9ias_home>\j2ee\home\config\default-web-site.xml and added following entry:
     <web-app application="SimpleServlet" name="SimpleServlet" root="/SimpleServlet"/>
4] I saved both the files and started Oracle HTTP Server and accessed page as below:
          http://<server>:7777/SimpleServlet/Simple
where Simple is servlet in SimpleServlet.war file.
In the browser, The page cannot be found is shown to user. I have verified that SimpleServlet.war is extracted to SimpleServlet folder under <ora9ias_home>\j2ee\home\applications folder. I found that Simple.class is stored under WEB-INF/classes folder and web.xml contains correct entry for url pattern for servlet Simple.
What else could be the problem? Am I placing the war file in wrong place or modfiying application.xml or default-web-site.xml in a wrong directory?
This is very urgent. Please help me with your valuable comments on this.
Thanks in advance.
Regards,
Sandesh

Hi Juliana,
Thanks a lot for your suggestion.
I am sorry if I have posted this message to a wrong forum. This is first time I am posting a message to OTN. I will resend message to J2EE forum as per you suggestion.
Meanwhile, please note information you asked for is as below:
I installed Oracle9iAS J2EE and Web Cache v9.0.3 on Windows 2000 server.
It includes:
     - Oracle HTTP Server
     - Oracle9iAS Containers for J2EE
     - Oracle9iAS Web Cache
     - Oracle Enterprise Manager
The release of installed Oracle9iAS is Release 2 (9.0.3)
Please do reply at the earliest.
Once again thanks and look forward to hear from you.
Regards,
Sandesh

Oddities when serving images via NES from a servlet that is part of a WAR

Just wanted to confirm that the following behavior is normal:
          Environment:
          NT 4.0 SP5
          NES 3.6 SP3
          WLS 5.1 SP3
          jdk 1.2.2
          Goal: When constructing a page that has images embedded in it from my
          servlet, I would like NES to serve the images.
          I've found out that I've to refer to my images with an absolute URL that
          maps to the images directory under Netscape's document root. If I refer to
          my image with a relative URL (request.getContextPath() +
          "/images/cookie.jpg"), then WebLogic tries to retrieve the image from the
          WAR. What is interesting is if I use relative references to images within my
          servlet (minus the WAR, i.e. with the servlet registered in
          weblogic.properties), I see that the image is being served by Netscape.
          Why does the WAR require absolute references to images and the previous
          mechanism does not? Is this behavior consistent with the spec? How are you
          guys handling this (are you using absolute references to static content when
          using WAR?)?
          I'm really baffled by this and wanted to see how others view this. Any
          comments/feedback will be much appreciated.
          Thanks,
          Sanjiv


Hi Cameron,
          You are right but see my "Goal" below. I want to serve my images from my web
          server and NOT by WebLogic. Anyway, I spent too much time on this and found
          out that I was getting inconsistent results during testing different
          approaches because I was not restarting my web server. Once I became
          consistent in restarting my web server and closing all browser windows
          before each test, I got consistent results. So, here's what works for me:
          If I want to have my JSPs/servlets running in WLS to serve images that are
          included in their output from my web server, then I've to use absolute URLs.
          An example would be:
          img src="/images/a.gif"
          On the other hand if I use relative paths like img src="images/a.gif", then
          the browser request for the image is sent to WebLogic, which then looks for
          the image in the WAR (as it should).
          All of this might be common knowledge to most folks but not me.
          Thanks,
          Sanjiv
          Cameron Purdy <[email protected]> wrote in message
          news:[email protected]...
          > The WAR does not require absolute paths. Your JSP must be served from a
          URL
          > that, when combined with a relative path, actually specifies an image in
          the
          > WAR.
          >
          > Cameron Purdy, LiveWater
          >
          > "Sanjiv Gulati" <[email protected]> wrote in message
          > news:[email protected]...
          > > Just wanted to confirm that the following behavior is normal:
          > >
          > > Environment:
          > > NT 4.0 SP5
          > > NES 3.6 SP3
          > > WLS 5.1 SP3
          > > jdk 1.2.2
          > >
          > > Goal: When constructing a page that has images embedded in it from my
          > > servlet, I would like NES to serve the images.
          > >
          > > I've found out that I've to refer to my images with an absolute URL that
          > > maps to the images directory under Netscape's document root. If I refer
          to
          > > my image with a relative URL (request.getContextPath() +
          > > "/images/cookie.jpg"), then WebLogic tries to retrieve the image from
          the
          > > WAR. What is interesting is if I use relative references to images
          within
          > my
          > > servlet (minus the WAR, i.e. with the servlet registered in
          > > weblogic.properties), I see that the image is being served by Netscape.
          > >
          > > Why does the WAR require absolute references to images and the previous
          > > mechanism does not? Is this behavior consistent with the spec? How are
          you
          > > guys handling this (are you using absolute references to static content
          > when
          > > using WAR?)?
          > >
          > > I'm really baffled by this and wanted to see how others view this. Any
          > > comments/feedback will be much appreciated.
          > >
          > > Thanks,
          > > Sanjiv
          > >
          > >
          >
          >

War file not loading - Offending class: javax/servlet/Servlet.class

Hello;
I've got a war file for an app that I've been building for the past several weeks. I created a new version and uploaded it to the server and received a 404 error when trying to call a servlet in the war. The catalina.out file had the following message:
WebappClassLoader: validateJarFile(/usr/local/apache/tomcat/webapps/optintelligence/WEB-INF/lib/j2ee.jar) - jar not loaded. See Servlet Spec 2.3, section 9.7.2. Offending class: javax/servlet/Servlet.class
I've not changed my libraries at all and I don't see any conflict with another appliacation. The war file works on my local windows machine but has this error on a RedHat server. Both are running tomcat 4.x
I would appreciate any information on this problem.
Thanks;
Marshall

You might still get the warning when you start Tomcat:
WebappClassLoader: validateJarFile(/usr/local/apache/tomcat/webapps/optintelligence/WEB-INF/lib/j2ee.jar) - jar not loaded. See Servlet Spec 2.3, section 9.7.2. Offending class: javax/servlet/Servlet.class
That's because you have the j2ee.jar as part of the web application. The servlet specficiation forbids a web application trying to override core java, j2ee classes. Thererfore Tomcat prints the warning message that the particular jar could not be loaded as it is trying to override a core java-j2ee class.
If you remove the j2ee.jar from the web app WEB-INF/lib folder, the warning will disappear.

Problems loading Servlet in WAR deployment

I'm deploying a servlet using a war file. I am able to deploy the war under
          both WebLogic 6.0 sp2 and WebLogic 6.1 beta. However, when I try to access
          the servlet from a browser I get the following error:
          [java] <Aug 7, 2001 2:49:13 PM CDT> <Error> <HTTP>
          <[WebAppServletContext(1
          287677,Alert-weblogic60,/Alert-weblogic60)] Error loading servlet:
          'AlertEventLi
          stenerServlet'
          [java] java.lang.NoClassDefFoundError: org/apache/log4j/Category
          [java] at
          com.agea.alert.servlet.AlertEventListenerServlet.<init>(Alert
          EventListenerServlet.java:25)
          [java] at java.lang.Class.newInstance0(Native Method)
          [java] at java.lang.Class.newInstance(Class.java:237)
          [java] at
          weblogic.servlet.internal.ServletStubImpl.createServlet(Servl
          etStubImpl.java:641)
          [java] at
          weblogic.servlet.internal.ServletStubImpl.createInstances(Ser
          vletStubImpl.java:619)
          [java] at
          weblogic.servlet.internal.ServletStubImpl.prepareServlet(Serv
          letStubImpl.java:564)
          [java] at
          weblogic.servlet.internal.ServletStubImpl.getServlet(ServletS
          tubImpl.java:344)
          [java] at
          weblogic.servlet.internal.ServletStubImpl.invokeServlet(Servl
          etStubImpl.java:240)
          [java] at
          weblogic.servlet.internal.ServletStubImpl.invokeServlet(Servl
          etStubImpl.java:200)
          [java] at
          weblogic.servlet.internal.WebAppServletContext.invokeServlet(
          WebAppServletContext.java:2279)
          [java] at
          weblogic.servlet.internal.ServletRequestImpl.execute(ServletR
          equestImpl.java:1923)
          [java] at
          weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:137)
          [java] at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:120)
          [java] >
          Obviously the problem is that the servlet can't load the
          org.apache.log4j.Category class. However, I have included the log4j.jar
          file (which contains the org.apache.log4j.Category class) in the war under
          WEB-INF/lib. Why isn't the classloader picking it up?
          Thanks for the help,
          Tim


Did you make sure that:
          org/apache/log4j/Category
          is in the server's classpath?
          "Timothy O'Hara" <[email protected]> wrote in message
          news:[email protected]...
          > I'm deploying a servlet using a war file. I am able to deploy the war
          under
          > both WebLogic 6.0 sp2 and WebLogic 6.1 beta. However, when I try to
          access
          > the servlet from a browser I get the following error:
          >
          > [java] <Aug 7, 2001 2:49:13 PM CDT> <Error> <HTTP>
          > <[WebAppServletContext(1
          > 287677,Alert-weblogic60,/Alert-weblogic60)] Error loading servlet:
          > 'AlertEventLi
          > stenerServlet'
          > [java] java.lang.NoClassDefFoundError: org/apache/log4j/Category
          > [java] at
          > com.agea.alert.servlet.AlertEventListenerServlet.<init>(Alert
          > EventListenerServlet.java:25)
          > [java] at java.lang.Class.newInstance0(Native Method)
          > [java] at java.lang.Class.newInstance(Class.java:237)
          > [java] at
          > weblogic.servlet.internal.ServletStubImpl.createServlet(Servl
          > etStubImpl.java:641)
          > [java] at
          > weblogic.servlet.internal.ServletStubImpl.createInstances(Ser
          > vletStubImpl.java:619)
          > [java] at
          > weblogic.servlet.internal.ServletStubImpl.prepareServlet(Serv
          > letStubImpl.java:564)
          > [java] at
          > weblogic.servlet.internal.ServletStubImpl.getServlet(ServletS
          > tubImpl.java:344)
          > [java] at
          > weblogic.servlet.internal.ServletStubImpl.invokeServlet(Servl
          > etStubImpl.java:240)
          > [java] at
          > weblogic.servlet.internal.ServletStubImpl.invokeServlet(Servl
          > etStubImpl.java:200)
          > [java] at
          > weblogic.servlet.internal.WebAppServletContext.invokeServlet(
          > WebAppServletContext.java:2279)
          > [java] at
          > weblogic.servlet.internal.ServletRequestImpl.execute(ServletR
          > equestImpl.java:1923)
          > [java] at
          > weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:137)
          >
          > [java] at
          weblogic.kernel.ExecuteThread.run(ExecuteThread.java:120)
          > [java] >
          >
          > Obviously the problem is that the servlet can't load the
          > org.apache.log4j.Category class. However, I have included the log4j.jar
          > file (which contains the org.apache.log4j.Category class) in the war under
          > WEB-INF/lib. Why isn't the classloader picking it up?
          >
          > Thanks for the help,
          > Tim
          >
          >

Form Authentication Servlet and MD5

Dear forum,
I have the following servlet to authenticate a user via form. If you go to the root url you get the login html and the authentication works fine but if the user knows the url of a specific html just by typing the url gives access to the page without going through the authentication. The website is composed of htmls and servlets. How can I force the authentication for the htmls and the servlets. I included at the bottom how I added the Login servlet to the web.xml. I suspect that the servlet definition in the web.xml is the problem.
Also I would like to use MD5 encryption, would someone suggest how this can be accomplished.
Thanks.
This is the code:
import java.io.*;
import java.util.*;
import javax.servlet.http.*;
import javax.servlet.*;
import java.sql.*;
import javax.sql.*;
public class LoginServlet extends HttpServlet {
public void doPost (
     HttpServletRequest     request,
     HttpServletResponse     response
    ) throws ServletException, IOException
String item = request.getParameter("account");
doGet(request,response);
public void doGet (
     HttpServletRequest     request,
     HttpServletResponse     response
    ) throws ServletException, IOException
   HttpSession session = request.getSession(true);
   PrintWriter out = response.getWriter();
     try {
          String driverName="sun.jdbc.odbc.JdbcOdbcDriver";
          String dbUrl="jdbc:odbc:Virtual_Library_DB";
          Class.forName(driverName);
          Connection db =DriverManager.getConnection(dbUrl,"","");
          if ((session.getAttribute("user") == null) || (!session.getAttribute("ip").equals(request.getRemoteAddr()))){
               PreparedStatement pStmt = db.prepareStatement("SELECT * FROM Login WHERE Login.account =? AND Login.password=? ");
               pStmt.setString(1, request.getParameter("account"));
               pStmt.setString(2, request.getParameter("password"));
                        pStmt.setString(3, request.getParameter("level"));
               ResultSet rs = pStmt.executeQuery();
                System.out.println("hello");
               if(!rs.next()){
                    System.out.println("Account is not valid.");
                    request.setAttribute("msg", "Account is not valid.");
                    RequestDispatcher rd = request.getRequestDispatcher("LoginInvalid.html");
                    rd.forward(request, response);
               else do {
                    int id = rs.getInt(1);
                    String account = rs.getString(2);
                    session.setAttribute("user", new Integer(id));
                    session.setAttribute("account", account);
                    session.setAttribute("ip", request.getRemoteAddr());
                    System.out.println("User " + session.getAttribute("user") +" has logged on.");
                    request.setAttribute("msg", "User has logged on.");
                    RequestDispatcher rd = request.getRequestDispatcher("index.html");
                    rd.forward(request, response);
               } while(rs.next());
               rs.close();
          else {
               System.out.println("User has already logged on.");
                    request.setAttribute("msg", "User has already logged on.");
                    RequestDispatcher rd = request.getRequestDispatcher("index.html");
                    rd.forward(request, response);
          db.close();
     catch(Exception exp){
          System.out.println("Exception: "+ exp);
   out.close();
web.xml
<servlet>
    <servlet-name>LoginServlet</servlet-name>
    <servlet-class>LoginServlet</servlet-class>
</servlet>
<servlet-mapping>
    <servlet-name>LoginServlet</servlet-name>
    <url-pattern>/LoginServlet</url-pattern>
</servlet-mapping>

Check the session in the servlets that are allowed only for logged-in users.
public class ServletUtils
    public static boolean checkLogin(HttpServletRequest request, HttpServletResponse response)
        HttpSession session = request.getSession(false); // false = don't create a new session if not logged in
        if (session != null)
            return true;
        Logging.log("tried to access page without login, redirecting to login");
        ...redirect to login.html...
        return false;
    // At the start of your doGet()'s:
    if (!checkLogin(request, response))
        return;Do you really need static documents to be authenticated? dot.gif's and all? Someone can make a zip file of them anyway and post it to their own web site or Kazaa.
If you have a couple of html pages you want authenticated, easiest is to write them as servlets (+ maybe JSP's) and do the login check there.
Ok, let's say you have ...what, an "image database" (heh) that you want available to logged-in users only. Write a servlet that serves those pages. That servlet checks the session, and then copies the appropriate file to the user (remember to set content type; consider caching the files if hit rate is very high.) The servlet would be called like /images/show?id=gerbilsex/closeup.gif to fetch the named file. Put the files outside the web server's document directory so they are not accessible except through the servlet. Perform strict checks on the file name to disallow nastiness like id=../../../etc/passwd. A similar database solution is also possible. Another variant is to map a servlet to a "virtual directory name" and get the actual file name from the URL path -- similar to the ?id= solution, except the URLs don't have parameters.
About md5: md5 isn't an encryption algorithm, it is a hash algorithm (aka "message digest" or "fingerprint"). It can't be decrypted. What do you really want to accomplish - encryption or hashing?

Questions about deploying compressed WAR

I've been having issues when trying to deploy a compressed
Flex application into my Weblogic Server. I read in the
Installation Guide (
http://www.adobe.com/support/documentation/en/flex/2/install.html)
that you need to some "hacking" to make it work but i have a big
question:
The guide says:
Locate the servlet definition for MessageBrokerServlet, and
update the flex.write.path init-param element to specify an
existing, writeable, directory path:
<init-param>
<param-name>flex.write.path</param-name>
<param-value>C:/bea/flex</param-value>
</init-param>
I have no clue about this, i mean what is supposed to be in
the path C:/bea/flex??? Can anyone explain what the
"flex.write.path" means or referrers to?
Diego

I tried setting the write path to any folder like the example
and i got this during the server startup:
[Flex] [WARN] The watch-file,
/WEB-INF/flex/services-config.xml, could not be resolved to a path
and will be ignored.
[Flex] [WARN] The watch-file, /WEB-INF/flex/proxy-config.xml,
could not be resolved to a path and will be ignored.
[Flex] [WARN] The watch-file,
/WEB-INF/flex/remoting-config.xml, could not be resolved to a path
and will be ignored.
[Flex] [WARN] The watch-file,
/WEB-INF/flex/messaging-config.xml, could not be resolved to a path
and will be ignored.
[Flex] [WARN] The watch-file,
/WEB-INF/flex/data-management-config.xml, could not be resolved to
a path and will be ignored.
[Flex] [WARN] The touch-file, /WEB-INF/web.xml, could not be
resolved to a path and will be ignored.
And then when i tried to run the sample application CRM
(which is included in the samples war when you install flex 2) i
get this error:
java.sql.SQLException: The url cannot be null
so what's wrong?

Servlet configuration in Weblogic 5.1.. web.xml vs weblogic.properties..

Can someone please tell me how the <servlet> entry differs from
          weblogic.httpd.register.snoop=examples.servlets.SnoopServlet
          in weblogic properties?
          Do these perform identical functions?


Yes this is the source of my confusiong. It seems to be that WL can be told
          about servlets
          two ways. Firstly through the web.xml file and also via weblogic.properties.
          I don't understand
          why the second one exists.
          "Cameron Purdy" <[email protected]> wrote in message
          news:[email protected]...
          > I only work with WAR files, so I cannot speak to non-WARd servlets with
          any
          > confidence. I know that WL could use web.xml for non-WARd servlets in
          order
          > to obtain the other information associated with the servlet:
          >
          > <!ELEMENT servlet (icon?, servlet-name, display-name?, description?,
          > (servlet-class|jsp-file), init-param*, load-on-startup?,
          > security-role-ref*)>
          >
          > --
          >
          > Cameron Purdy
          > http://www.tangosol.com
          >
          >
          > "Robert Nicholson" <[email protected]> wrote in message
          > news:[email protected]...
          > > If what you say is true then why is there the need to also tell WL about
          > the
          > > servlets themselves?
          > >
          > > Presumably this is for when the servlets exist outside of a WAR then?
          > >
          > > "Cameron Purdy" <[email protected]> wrote in message
          > > news:[email protected]...
          > > > The weblogic.properties tells WL to load a WAR or specific servlet.
          The
          > > > <servlet> entry (I assume you refer to
          > > > http://java.sun.com/j2ee/dtds/web-app_2_2.dtd) defines the presence of
          a
          > > > servlet within a WAR (a deployment unit):
          > > >
          > > > >
          > > > The servlet element contains the declarative data of a
          > > > servlet. If a jsp-file is specified and the load-on-startup element is
          > > > present, then the JSP should be precompiled and loaded.
          > > > [end-quote]
          > > >
          > > > In the case of a WAR deployment, you have to tell WL that the WAR
          > exists,
          > > > then it will look in the WAR and figure out what servlets are there
          from
          > > the
          > > > <servlet> tags in your web.xml. You set up a WAR in the
          > > weblogic.properties
          > > > as such:
          > > >
          > > > weblogic.httpd.webApp.<http-path>=<os-path>
          > > >
          > > > For example:
          > > > weblogic.httpd.webApp.website=c:/weblogic/website.war
          > > >
          > > > --
          > > >
          > > > Cameron Purdy
          > > > http://www.tangosol.com
          > > >
          > > >
          > > > "Robert Nicholson" <[email protected]> wrote in message
          > > > news:[email protected]...
          > > > > Can someone please tell me how the <servlet> entry differs from
          > > > >
          > > > > weblogic.httpd.register.snoop=examples.servlets.SnoopServlet
          > > > >
          > > > > in weblogic properties?
          > > > >
          > > > > Do these perform identical functions?
          > > > >
          > > > >
          > > >
          > > >
          > >
          > >
          >
          >

Servlet definition outside war filr

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