orderservlet.java

JAVA网上书店的程序原代码,希望对大家偶用

package ebookshop.servlet;

import java.io.IOException;
import java.util.Collection;
import java.util.Iterator;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletContext;
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 ebookshop.bean.OrderBean;
import ebookshop.bean.OrderListBean;
import ebookshop.shopcart.*;

public class OrderServlet extends HttpServlet
{
	private ServletContext sc;	
	
	public void doPost(HttpServletRequest request,HttpServletResponse response)
								throws IOException,ServletException
	{
		request.setCharacterEncoding("gb2312");
		
		String operation=request.getParameter("operation");
		if(operation==null) {operation=""; }
		if(operation.equalsIgnoreCase("showorder")) //判断传过来的请求是不是"showorder",如果是则调用doShowOrder()且返回(后面的代码不执行了)
		{
			this.doShowOrder(request,response);
			return;
		}
		
		String realName=request.getParameter("realName");
		String address=request.getParameter("address");
		String postalcode=request.getParameter("postalcode");
		String telephone=request.getParameter("telephone");		
		/*
		String sqlStr=request.getParameter("realName")+request.getParameter("address")
						+request.getParameter("postalcode")+request.getParameter("telephone");
		System.out.println(sqlStr); */
		response.setContentType("contentType=text/html;charset=gb2312");
		HttpSession session = request.getSession(false);
		Integer cid=(Integer)session.getAttribute("cid");  //从session中获得cid
		System.out.println(cid);
		//long dt= new java.util.Date().getTime();		
		java.sql.Date date=new java.sql.Date(new java.util.Date().getTime());  //拿到系统当前时间并转换为"2007-07-16"(sql形式)
		System.out.println(date);
		int oid=new OrderBean().saveUserInf(cid, realName, address, postalcode, telephone,date);   //把用户详细信息保存到数据库中
		System.out.println(oid);
		Integer ooid=new Integer(oid); //将int-->Integer
		request.setAttribute("oid", ooid);
		
		String userName=(String)session.getAttribute("userName");   //从session中获得userName
		ShoppingCart cart=(ShoppingCart)session.getAttribute(userName);  //从session中获得购物车
		if(cart==null)
		{
			this.doBrowseErr(request, response);
			return;
		}
		
		int bookNumber=0;
		float price=(float)0.0;
		String bookName=null;
		Collection bookInf = cart.getItems();
		Iterator it= bookInf.iterator();
		while(it.hasNext())  //循环的从购物车中拿出每一购物车项
		{
			ShopCartItem scitem=(ShopCartItem)it.next();
			bookNumber =scitem.getBookNumber();
			price=scitem.getBookPrice();
			bookName=scitem.getBookName();
			System.out.println(bookNumber+"\t"+price+"\t"+bookName);
			
			OrderListBean olb=new OrderListBean();
			olb.setBookName(bookName);    //动态的给OrderListBean中的属性赋值
			olb.setBookNumber(bookNumber);
			olb.setPrice(price);
			olb.setOid(ooid);
			olb.setUserName(userName);			
			
			try
			{
				olb.saveOrderList();   //动态地将每一购物车项信息保存到数据库中
			}
			catch(Exception e)
			{
				e.printStackTrace();
			}
		}
		doBrower(request,response);   //保存成功后,调用doBrower()显示结果
	}
	
	public void doGet(HttpServletRequest request,HttpServletResponse response)
	throws IOException,ServletException
	{
		doPost(request,response);
	}
	
	//处理"订单查询"的请求的方法
	public void doShowOrder(HttpServletRequest request, HttpServletResponse response)throws ServletException,IOException
	{
		String userName=request.getParameter("userName");
		Collection orlistInf=new OrderListBean().queryByUserName(userName);  //从数据库中拿出此用户名的订单详细信息
		request.setAttribute("orlist", orlistInf);  //把此用户名的订单详细信息放在请求链中
		doBrowerOrder(request,response); //调用doBrowerOrder()
	}
	
	public void doBrower(HttpServletRequest request, HttpServletResponse response)throws ServletException,IOException
	{
		sc=getServletContext();
	    RequestDispatcher rd=sc.getRequestDispatcher("/orderResult.jsp");
	    rd.forward(request,response);   //将请求转发给 orderResult.jsp,来显示提交订单的结果
	 }
	
	public void doBrowerOrder(HttpServletRequest request, HttpServletResponse response)throws ServletException,IOException
	{
		sc=getServletContext();  //获得一个上下文的对象
	    RequestDispatcher rd=sc.getRequestDispatcher("/queryorderResult.jsp");
	    rd.forward(request,response);  //将请求转发给queryorderResult.jsp,来显示订单查询的结果.
	 }
	
	private void doBrowseErr(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
	{		
		sc=getServletContext();
		RequestDispatcher rd=sc.getRequestDispatcher("/login.jsp");
		rd.forward(request,response);

    }
	
}