Web Client Code

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.

Example 7–8 Container Client Class

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();
        }
    }
}

Example 7–9 Component for Container Client

package components;

import org.glassfish.examples.extension.greeter.Greeter;

@Greeter(name="simple")
public class SimpleGreeter {

    public String saySomething() {
        return "Bonjour";
    }
}

Example 7–10 Deployment Descriptor for Container Client

<?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>