如何使用@WebListener部署Java EE侦听器

Question

I want to implement a new listener (using the servlet 3.0 spec).

@WebListener
public class LoadingManager implements ServletContextListener 
    @Override
    public void contextInitialized(ServletContextEvent servletContextEvent) {

    }

    @Override
    public void contextDestroyed(ServletContextEvent servletContextEvent) {


    }

}

I package the listener in a jar and I want to know which is the better deployment mode

• Put the jar on the tomcat/lib
• Put the jar inside webapps/My-Application/lib

If I deploy the jar under the tomcat/lib, how much time the method contextInitialized will be performed (knowing that I have a set of webapplicatio deployed on my tomcat instance)

Thanks in advance

Answer 1

Better to add it in the webapps/My-Application/lib so that it can be used based on individual application and not for all the applications

Even Gimby has some good points in the comment.