The web client code is comprised of the classes and resources that are listed in the following table. The table also provides a cross-reference to the listing of each class or resource.
Class or Resource |
Listing |
---|---|
HelloWorld | |
SimpleGreeter | |
Deployment descriptor |
import components.SimpleGreeter; import java.io.IOException; import java.io.PrintWriter; import javax.servlet.annotation.WebServlet; import javax.servlet.*; import javax.servlet.http.*; import javax.annotation.Resource; @WebServlet(urlPatterns={"/hello"}) public class HelloWorld extends HttpServlet { @Resource(name="Simple") SimpleGreeter greeter; public void doGet(HttpServletRequest req, HttpServletResponse res) throws IOException, ServletException { PrintWriter pw = res.getWriter(); try { pw.println("Injected service is " + greeter); if (greeter!=null) { pw.println("SimpleService says " + greeter.saySomething()); pw.println("<br>"); } } catch(Exception e) { e.printStackTrace(); } } }
package components; import org.glassfish.examples.extension.greeter.Greeter; @Greeter(name="simple") public class SimpleGreeter { public String saySomething() { return "Bonjour"; } }
<?xml version="1.0" encoding="UTF-8"?> <web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/Line break added for readability xml/ns/javaee/web-app_2_5.xsd"> </web-app>