Securing the web module

The first resource we want to protect is the web resource, a servlet, as follows:


public class MyProtectedServlet extends HttpServlet {
    protected void doGet(HttpServletRequest req,
                 HttpServletResponse resp) 
        throws ServletException, IOException {
        Principal userPrincipal = req.getUserPrincipal();
resp.getWriter().println(userPrincipal!=null?userPrincipal.getName(): "anonymous");

Here we can see the power of Java EE 6: we don't need to write XML to declare a servlet and to bind it to a URL, a single annotation is enough. Now, after compiling and launching, the deploy goal will allow us to call http://localhost:7001/chapter3-web/myprotectedresource ...

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