vieworder.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 com.bsw.order.database.*;
import com.bsw.order.base.*;

import java.util.ArrayList;

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

/**
 * @author 蜗牛 实现order的查看
 * 
 */
public class ViewOrder extends HttpServlet {

	/**
	 * Constructor of the object.
	 */
	public ViewOrder() {
		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
		request.setCharacterEncoding("utf-8");
		response.setCharacterEncoding("utf-8");
		response.setContentType("text/html");
		// 设置session
		javax.servlet.http.HttpSession session = request.getSession();
		// 从表格或者从session中获取当前查看order的id
		String id;
		if (request.getParameter("kind") != null
				&& !request.getParameter("kind").equals(""))
			id = request.getParameter("kind");
		else {
			id = (String) session.getAttribute("kind");
		}
		// 使用DAO,查询order的信息
		TorderDAO td = new TorderDAO();
		Torder t = td.queryId(id);
		
		OrderitemDAO od = new OrderitemDAO();
		ArrayList list = od.queryOrderitems(id);
		int sum=0;
		for(int i=0;i<list.size();i++){
			sum+=((Orderitem)list.get(i)).getSum();
		}
		t.setSum(sum);
		td.updateTorder(t);
		request.setAttribute("order", t);
		request.setAttribute("list", list);
		request.getRequestDispatcher("../com/bsw/order/jsp/viewCertainOrder.jsp").forward(request, response);
		// 反馈表单
		
	}

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

}