productcontextlistener.java

来自「想学习EJB的同学」· Java 代码 · 共 36 行

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package cart.servlet;

import ejb3.day2.Product;
import java.util.HashSet;
import java.util.Set;
import javax.servlet.ServletContext;
import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;

/**
 * Web application lifecycle listener.
 * @author user
 */

public class ProductContextListener implements ServletContextListener {

    public void contextInitialized(ServletContextEvent arg0) {
        ServletContext sc = arg0.getServletContext();
        Set<Product> products = new HashSet<Product>();
        products.add(new Product(1, "Core Java", 100));
        products.add(new Product(2, "Core C++", 88));
        products.add(new Product(3, "EJB 3", 120));
        products.add(new Product(4, "Ajax", 50));
        sc.setAttribute("products", products);
    }

    public void contextDestroyed(ServletContextEvent arg0) {
        ServletContext sc = arg0.getServletContext();
        sc.removeAttribute("products");
    }
}