How to get Classpath for an EAR deployed in WebLogic Server

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I have an application deployed as an EAR in WebLogic 10.3.2 version. I am working on some implementations where I got to scan all of the .jar files in classpath.

At Runtime, when i call System.getProperty("java.class.path");, It returns me the WebLogic bootstrap classpath, NOT the one which my application is using within the EAR file.

Is there any way to the get the classpath which is being used by EAR file? I mean which is defined inside META-INF/MANIFEST.txt file.

Please advise and thanks in advance.

Raj

Best Answer

You can use this.getClass().getClassLoader().getResources("META-INF/MANIFEST.MF");

Or, if you need to load stuff, you should take a look into java.lang.ClassLoader.getSystemClassLoader(); and/or java.lang.Thread.currentThread().getContextClassLoader();.

Related Solutions

Java – Weblogic EAR Classloading

I think you should remove the JARs from the server bootstrap area and let each domain load the JARs from their individual EAR using the domain level class loader.

You already know this is true, because the approach you're taking is giving you problems.

The only justification for doing it your way is to try and save some disk space by not duplicating JARs in multiple domains. I say that disk space is cheap, and getting cheaper all the time. Common JARs mean common dependencies, and you don't want to force every domain on a WebLogic instance to have to upgrade a JAR just because one citizen needs it.

Remove the JARs from the server bootstrap and duplicate the ones you need in each EAR. Make each EAR, each domain independent of the others.

UPDATE:

You need to get your own server.

Or add the <prefer-web-inf-classes> tag to your configuration.

Consult this for details.

Exception with EAR in WebLogic 9.2 and Xerces144.jar

What is the difference with this xerces144.jar file when it is included in a WAR vs same WAR included in a EAR and deployed.

I think that this has something to do with classloading. When deploying a WAR or deploying the same WAR inside an EAR, Weblogic doesn't create the same hierarchy of classloaders.

The strangest part is that Weblogic 9.x ships with Xerces 1.4.4 in 3rdparty.jar (at least, this is true for 9.1, it would be interesting to check the version for 9.2). This can be easily verified by running the following command on the command line:

$ java -cp 3rdparty.jar org.apache.xerces.framework.Version

To be honest, I don't know what happens exactly and what the problem actually is when you deploy the WAR inside the EAR with Xerces packaged in the WAR. In all the scenarios you described, my understanding is that there is a Xerces jar somewhere on the classpath.

If you really want to deploy Xerces-144.jar in the WAR, could you try to set prefer-web-inf-classes in the weblogic.xml and test this configuration?

Best Answer

Related Solutions

Java – Weblogic EAR Classloading

Exception with EAR in WebLogic 9.2 and Xerces144.jar

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