[servlet context path, web application path, docbase, documentbase] from a Spring web application

source: http://stackoverflow.com/questions/12236590/retrieving-the-servlet-context-path-from-a-spring-web-application

Q:

I would like to be able to dynamically retrieve the "servlet context path" (e.g.http://localhost/myapp or http://www.mysite.com) for my spring web application from aService spring bean.

The reason for this is that I want to use this value in email that are going to be sent to users of the website.

While it would be pretty easy to do this from a Spring MVC controller, it is not so obvious to do this from a Service bean.

Can anyone please advise?

EDIT: Additional requirement:

I was wondering if there wasn't a way of retrieving the context path upon startup of the applicationand having it available for retrieval at all time by all my services?

A:

If you use a ServletContainer >= 2.5 you can use the following code to get the ContextPath:

import javax.servlet.ServletContext;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component

@Component
public class SpringBean {

    @Autowired
    private ServletContext servletContext;

    @PostConstruct
    public void showIt() {
        System.out.println(servletContext.getContextPath());
    }
}

See also this answer to a related question: stackoverflow.com/a/2066883/545127