deleteitem.java

这是一个网站在线订单系统.可以删除,查询,修改

package com.bsw.order.servlet;

import java.io.IOException;
import java.io.PrintWriter;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;

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

import com.bsw.order.base.Torder;
import com.bsw.order.database.OrderitemDAO;
import com.bsw.order.database.TorderDAO;

/**
 * @author 蜗牛
 * 实现Item项的删除
 *
 */
public class DeleteItem extends HttpServlet {

	/**
	 * Constructor of the object.
	 */
	public DeleteItem() {
		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 {

		//设置request,response参数
		response.setContentType("text/html");
		response.setCharacterEncoding("utf-8");
		request.setCharacterEncoding("utf-8");
		//获取用户需要删除的Order及其Item的id
		String orderId=request.getParameter("orderId");
		String itemId=request.getParameter("itemId");
		//定义session并添加 orderId
		javax.servlet.http.HttpSession session = request.getSession();
		session.setAttribute("kind", orderId);
		
		//定义DAO，数据库操作删除
		OrderitemDAO od =new OrderitemDAO();
		od.deleteTorder(Integer.parseInt(itemId));
		
		
//		修改最后修订时间
		Torder t=new Torder();
		TorderDAO td=new TorderDAO();		
		t=td.queryId(orderId);
		Date date = new Date();
		DateFormat sdf=new SimpleDateFormat("yyyy-MM-dd-hh:mm:ss aa"); 
		String time = sdf.format(date); 
		t.setLastmodifydate(time);
		
		td.updateTorder(t);
		//重定向到ViewOrder
		response.sendRedirect("/Order/servlet/ViewOrder");
		
		
	}

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

}