How can I access the ServletContext from within a JAX-WS web service?

Question

I want to share an object between my servlets and my webservice (JAX-WS) by storing it as a servlet context attribute. But how can I retrieve the servlet context from a web service?

Answer 1

The servlet context is made available by JAX-WS via the message context, which can be retrieved using the web service context. Inserting the following member will cause JAX-WS to inject a reference to the web service context into your web service:

import javax.annotation.Resource;
import javax.servlet.ServletContext;
import javax.xml.ws.WebServiceContext;
import javax.xml.ws.handler.MessageContext;

...

@Resource
private WebServiceContext context;

Then, you can access the servlet context using:

ServletContext servletContext =
    (ServletContext) context.getMessageContext().get(MessageContext.SERVLET_CONTEXT);

Answer 2

If you use Maven add this dependency!!!

        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>servlet-api</artifactId>
            <version>2.4</version>
            <scope>provided</scope>
        </dependency>

So I solved for avoid conflict error for get ServletContext INFO :

And in class method I use

@WebService(endpointInterface = "choice.HelloWorld")
public class HelloWorldImpl implements HelloWorld {
    @Resource
    private WebServiceContext context;
    public String sayHi(String text) {
        HttpServletRequest request =(HttpServletRequest) context.getMessageContext().get(MessageContext.SERVLET_REQUEST);
        System.out.println(request.getContextPath());

Answer 3

If the object you are trying to share is a file, say myFile.txt you can use the method below:

The best way to do this that I use is:

Thread.currentThread().getContextClassLoader().getResource("myFile.txt").getPath()

This gives the path of any file myFile.txt placed in /WEB-INF/classes/ directory inside the WebContent folder of the WebApp.

In Eclipse JEE environment you need to keep the file myFile.txt, that you may want to read within the Web Service, in the src folder for it to be transported to the /WEB-INF/classes/ folder by the deployer.