buycar.java

电子商务网站中实现分页的源代码

package com.monitor.controller;

import java.io.IOException;
import java.io.PrintWriter;

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

import com.monitor.bean.BookBean;
import com.monitor.bean.BuyCarBean;
import com.monitor.biz.BookBiz;

public class BuyCar extends HttpServlet {
	private int i=0;
	/**
	 * 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 {
		String strId = request.getParameter("id");
		BookBiz bookBiz = new BookBiz();
		BookBean book = bookBiz.getSingleBook(new Integer(strId).intValue());
		BuyCarBean bcb = (BuyCarBean) request.getSession().getAttribute("buyCar");
		if(bcb==null){
			bcb = new BuyCarBean();
		}
		book.setI(i);
		bcb.addBook(book);
		request.getSession().setAttribute("buyCar", bcb);
		i++;
		//System.out.println(i);
		response.sendRedirect("buycar.jsp");
	}

	/**
	 * 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 {
		this.doGet(request, response);
	}

}