What is the proper way of init of application ear under jboss

i need right at the start of my ear that some code was execut开发者_开发知识库ed to init application before it is used. So i wonder what is the proper way of doing this, possibly via some jboss configs, or via spring?

I' using spring3 and jboss4

If you're using Spring, use a Spring way, then you won't be tied to JBoss if you ever move off it. Here are some options:

• Implement InitializingBean; example
• Run code inside of a bean's controller
• Annotate a method in a bean with @PostConstruct; example

Any of these methods work.