loginservlet.java

网上商店代码

package com.ata.shoping;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Vector;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;


public class LoginServlet extends HttpServlet {
	static Vector<Product> productList;
	/**
	 * Constructor of the object.
	 */
	public LoginServlet() {
		super();
	}

	/**
	 * Destruction of the servlet. <br>
	 */
	public void destroy() {
		super.destroy(); // Just puts "destroy" string in log
		// Put your code here
	}

	/**
	 * The doGet method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to get.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		doPost(request,response);
	}

	/**
	 * The doPost method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to post.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		
		//...............验证用户
		String loginName = "Liyang";
		//...............建立并保存session
		HttpSession session =request.getSession();
		
		session.setAttribute("user", loginName);
		//...............初始化购物车，并保村到session；
		session.setAttribute("myCard", new Card());
		
		//..............转向到商品页面，让客户浏览并购买产品
		
		response.sendRedirect("/shopingcard/productList.jsp");
		
	}

	/**
	 * Initialization of the servlet. <br>
	 *
	 * @throws ServletException if an error occurs
	 */
	public void init() throws ServletException {
		productList = new Vector<Product>();
		Product p1 = new Product();
		p1.setProductId("1");
		p1.setProductName("PC");
		p1.setProductPrice(4500);
		p1.setProductImage("/image/p1.jpg");
		Product p2 = new Product();
		p2.setProductId("2");
		p2.setProductName("PC2");
		p2.setProductPrice(5500);
		p2.setProductImage("/image/p2.jpg");
		Product p3 = new Product();
		p3.setProductId("3");
		p3.setProductName("PC3");
		p3.setProductPrice(74500);
		p3.setProductImage("/image/p3.jpg");
		
		
		
		productList.add(p1);
		productList.add(p2);
		productList.add(p3);
		
	}
	public static Vector<Product> getProductAll(){
		
		return productList;
	}
}