shopcartfrontservlet.java

一个仿造淘宝的jsp网站。功能比较完善

package com.jc.taobao.gjj.action;

import java.io.IOException;

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

import com.jc.taobao.gjj.entity.ShopInfo;
import com.jc.taobao.gjj.logic.ShopCart;
import com.jc.taobao.gjj.logic.ShopInfoBean;

public class ShopCartFrontServlet extends HttpServlet {
	ShopInfoBean shopbean=new ShopInfoBean();

	/**
	 * Constructor of the object.
	 */
	public ShopCartFrontServlet() {
		super();
	}

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

	/**
	 * 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 {

		   response.setContentType("text/html");
		   HttpSession session=request.getSession();
	       String username=(String)session.getAttribute("loginusername");
	  	ShopCart cart=(ShopCart)session.getAttribute("cart");
	 	 if(cart==null)
	 		{
	 		
	 		cart=new ShopCart();
	 		session.setAttribute("cart",cart);
	 		}
	   		String id=String.valueOf(request.getParameter("addshopid"));
	   		System.out.print(id.toString());
	   		ShopInfo shop=null;
	   		if(id!="")
	   		{ 
	   		
	   			shop=shopbean.getquerybysid((int)(Integer.parseInt(id))).get(0);
	   			cart.addShopping(id,shop);
	   		}
			response.sendRedirect("/taobao/ShopCar.jsp");
	}

	/**
	 * Initialization of the servlet. <br>
	 *
	 * @throws ServletException if an error occure
	 */
	public void init() throws ServletException {
		// Put your code here
	}

}