How to access values of web.xml in Spring Controller

Question

I am defining a context-param in web.xml of my application as below

    baseUrl
    

        

Answer 1

Make your Controller implement the ServletContextAware interface. This will force you implement a setServletContext(ServletContext servletContext) method and Spring will inject the ServletContext in it. Then just copy the ServletContext reference to a private class member.

public class MyController implements ServletContextAware {

    private ServletContext servletContext;

    @Override
    setServletContext(ServletContext servletContext) {
        this.servletContext = servletContext;
    }
}

You can get the param-value with:

String urlValue = servletContext.getInitParameter("baseUrl");