Deploying EJBs in a web app

Question

Hi,
I'm trying to deploy some EJBs in a WebLogic WebApp. I have it all packaged
properly, and when I start the server, I can see that my EJBs are bound to
the JNDI names. For example:
Mon Jan 08 22:48:58 PST 2001:<I> <WebAppServletContext-myapp> binding
web.xml EJB reference '<ejb_name>' to JNDI name '<ejb_name>'
<ejb_name> is of course the name of the bean that is being deployed.
The perplexing thing is that once it's running, I cannot bind to the bean
name that I was successfully able to bind to when the beans were deployed
using the 'weblogic.ejb.deploy' property in the weblogic.properties file.
I'm assuming that I'm missing a name prefix or something, but I cannot find
any mention of anything like that in the docs.
Here is a partial stack trace from the exception that I get when trying to
access the beans:
javax.naming.NameNotFoundException: '<ejb_name>'; remaining name
'<ejb_name>'
     at
weblogic.jndi.toolkit.BasicWLContext.resolveName(BasicWLContext.java:745)
     at weblogic.jndi.toolkit.BasicWLContext.lookup(BasicWLContext.java:133)
     at weblogic.jndi.toolkit.BasicWLContext.lookup(BasicWLContext.java:574)
     at javax.naming.InitialContext.lookup(InitialContext.java:350)
     at jsp_servlet._index._jspService(_index.java:98)
     at weblogic.servlet.jsp.JspBase.service(JspBase.java:27)
Any help of hints greatly appreciated.
Dhiren

Answer 1

"Rob Woollen" <[email protected]> wrote in message
news:[email protected]...
Dhiren Patel wrote:
OK, here is some more detail about what I'm trying to do:
I would like to deploy my entire app under a single directory tree, and
ultimately as a single jar/war/ear/whatever.You can do this with an ear file, but only WLS 6 supports EAR files.
WLS 5.1 does not.
Ah. I guess I'll have to wait until WLS6. Thank for the info.
Dhiren
During development, I would
also like to minimize updates to my weblogic.properties file as other
developers add stuff (new EJBs, etc.) to the code
base.In WLS 5.1 you can deploy and ejb either through the weblogic.properties
or by using the weblogic.deploy command-line or EJBDeployerTool GUI
tools.
In WLS 6, we allow you to copy a ear/jar/war into the applications
directory, and the server will automatically recognize the new file and
deploy it.
On the surface, web
apps seem like the way to go.The EJB stuff that you are seeing if for ejb-lins or references. These
are references to EJBs but not the actual EJB code. EJBs cannot be
deployed in WAR files.
-- Rob
Everything is under one directory and the lib
directory is automagically added to the classpath. The "Writing Web
Applications"
document
(http://www.weblogic.com/docs51/classdocs/webappguide.html#dd_contextparams)
describes a directory structure that seemingly allows you to do all ofthis.
There are also a couple of files (web.xml and
weblogic.xml) in which you can specify EJB information, such as the JNDI
name, etc. Presumably, this EJB information is for EJBs deployed withthe
web app. I created the described directory structure and the two xmlfiles
and deployed the whole thing as a web app via a'weblogic.httpd.webApp.xxx'
property in the weblogic.properties file. The server starts up fine, and I
get the following messages to the startup log for each EJB I'm trying to
deploy:
Tue Jan 09 00:10:23 PST 2001:<I> <WebAppServletContext-myapp> binding
web.xml EJB reference '<ejb_name>' to JNDI name '<ejb_name>'
This is what led me to assume that the server is deploying the beans.But,
of course, when I try to access the beans, I get the exception shownbelow.
>>
Dhiren
"Rob Woollen" <[email protected]> wrote in message
news:[email protected]...
Dhiren Patel wrote:
Hi,
I'm trying to deploy some EJBs in a WebLogic WebApp.I don't understand. A WebApp contains servlets, jsp pages etc. A WAR
file would not contain an EJB. EJBs are deployed with an ejb-jar file
and must be deployed in the EJB container. An EAR file contains
multiple WAR and/or JAR files.
Can you clarify what you are trying to do?
-- Rob
I have it all packaged
properly, and when I start the server, I can see that my EJBs are
bound
to
the JNDI names. For example:
Mon Jan 08 22:48:58 PST 2001:<I> <WebAppServletContext-myapp>
binding
web.xml EJB reference '<ejb_name>' to JNDI name '<ejb_name>'
<ejb_name> is of course the name of the bean that is being deployed.
The perplexing thing is that once it's running, I cannot bind to thebean
name that I was successfully able to bind to when the beans weredeployed
using the 'weblogic.ejb.deploy' property in the weblogic.propertiesfile.
I'm assuming that I'm missing a name prefix or something, but I
cannot
find
any mention of anything like that in the docs.
Here is a partial stack trace from the exception that I get when
trying
to
access the beans:
javax.naming.NameNotFoundException: '<ejb_name>'; remaining name
'<ejb_name>'
at
weblogic.jndi.toolkit.BasicWLContext.resolveName(BasicWLContext.java:745)
atweblogic.jndi.toolkit.BasicWLContext.lookup(BasicWLContext.java:133)
atweblogic.jndi.toolkit.BasicWLContext.lookup(BasicWLContext.java:574)
at
javax.naming.InitialContext.lookup(InitialContext.java:350)
at jsp_servlet._index._jspService(_index.java:98)
at weblogic.servlet.jsp.JspBase.service(JspBase.java:27)
Any help of hints greatly appreciated.
Dhiren