delgood.java

很好的东东 本人随便做的 仅供学习之用

package xiaoshou.servlets;

import java.io.IOException;
import java.util.ArrayList;

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

import xiaoshou.classes.CGood;

public class DelGood extends HttpServlet {
	//	删除购物车里的药品
	/**
	 * Constructor of the object.
	 */
	public DelGood() {
		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 {

		String strid=request.getParameter("id");
		int id=Integer.parseInt(strid);
		ArrayList lists=(ArrayList)request.getSession().getAttribute("lists");
		for(int i=0;i<lists.size();i++){
			CGood good=(CGood)lists.get(i);
			if(good.getId()==id){
				lists.remove(good);
				request.getSession().removeAttribute("lists");
				if(lists.size()>0)
					request.getSession().setAttribute("lists", lists);
				break;
			}
		}
		request.getRequestDispatcher("/xiaoshou/applyGoods.jsp").forward(request, response);
	}

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

}