Different lib directories of JBoss

java jboss jar jboss5.x application-server
Serafeim picture Serafeim · Jun 17, 2010 · Viewed 10.5k times · Source

There is a number of different lib directories JBoss (5.1.0) uses: I can find jboss/lib, jboss/lib/endorsed, jboss/common/lib, jboss/server/default/lib and of course the jboss/server/default/deploy/myapp/WEB-INF/lib (am I missing something ?).

From the above, I know that I need to use the last one (WEB-INF/lib) to put any jars my app needs. What about all the others ? What is their use and what should I put there ? Why put it there and not in the WEB-INF/lib ?

Thanks !

Answer

Georgy Bolyuba picture Georgy Bolyuba · Jun 17, 2010

Other folders are for different sorts of shared libs. For example, if you have 10 apps using same DB driver, there is really no reason to keep one db driver jar per application (i.e. 10 jars). In that case you can simply put it into jboss/server/<server config>/lib.

  • jboss/server/<server config>/lib: all libs here are shared between all apps in given server config
  • jboss/common/lib: shared between all server configs
  • jboss/lib: these are libs for server itself (if I am not mistaking, they are also on your app classpath)
  • jboss/lib/endorsed: this is the same as above, only if you put a lib here, it will always be found before similar lib in jboss/lib. The idea is similar to Endorsed Standards Override Mechanism of JDK

Related questions

Java NoClassDefFound Error

I am trying to run a basic Hibernate program. When I run it, I am getting the below error java.lang.NoClassDefFoundError: org/jboss/logging/BasicLogger I tried google'ing for it and did include the following jar files in my …

Read More
What is the difference between Tomcat, JBoss and Glassfish?

I am starting to look into Enterprise Java and the book I am following mentions that it will use JBoss. Netbeans ships with Glassfish. I have used Tomcat in the past. What are the differences between these three programs?

Read More
How to call a stored procedure from Java and JPA

I am writing a simple web application to call a stored procedure and retrieve some data. Its a very simple application, which interacts with client's database. We pass employee id and company id and the stored procedure will return employee …

Read More