shopplingcart.java

JSP网上书店系统,有完整的程序,可以直接使用,无需修改

package com.tsinghua.servlet;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;

import javax.servlet.RequestDispatcher;
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 com.tsinghua.dao.BookDAO;
import com.tsinghua.dao.UserDAO;
import com.tsinghua.vo.Address;
import com.tsinghua.vo.CartItem;
import com.tsinghua.vo.Orders2;
import com.tsinghua.vo.user;

public class ShopplingCart extends HttpServlet {

	
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
            this.doPost(request, response);
	}

	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
        request.setCharacterEncoding("gb2312");
		response.setContentType("text/html;charset=gb2312");
		PrintWriter out = response.getWriter();
		HttpSession session=request.getSession(true);
		BookDAO dao=new BookDAO();
		String action =request.getParameter("action");
		int quantity=1;
       
       //用户购买商品
       if(action!=null&&"add".equals(action.trim())) {
    	   String Bookid1 = request.getParameter("Bookid");
   		   int Bookid=Integer.parseInt(Bookid1);
			Address book = dao.queryid(Bookid);
			//构造一个商品实例
			CartItem ci = new CartItem();
			ci.setBook(book);
			ci.setQuantity(quantity);
			Map map = null;
			if(session.getAttribute("MYCART")==null) {
				map = new HashMap();
				map.put(Bookid1, ci);
				session.setAttribute("MYCART", map);
			} else {
				//如果当前session中存在MYCART的对象，就将其取出
				map = (Map)session.getAttribute("MYCART");
				//然后还要判断是否已经存在了一本相同的书籍
				CartItem cart = (CartItem)map.get(Bookid1);
				//通过KEY去集合中查找相对应的商品对象(CartItem)如果不为空
				//说明已经存在相同的书籍在购物车中，所有修改当前商品的数量即可。
				if(cart!=null) {
					cart.setQuantity(cart.getQuantity()+quantity);
					map.put(Bookid1, cart);
				} else {
					map.put(Bookid1, ci);
				}
				session.setAttribute("MYCART", map);
			}
			RequestDispatcher rd = request.getRequestDispatcher("cart.jsp");
			rd.forward(request, response);
		}
       //商品添加管理
       if("addshop".equals(action)){
    	    String Bookuid=request.getParameter("Bookuid");
    	    String Booknumber=request.getParameter("Booknumber");
    	    String Bookprice=request.getParameter("Bookprice");
    	    String BookType=request.getParameter("Booktype");
            String Bookname=request.getParameter("Bookname");
            String Bookpic=request.getParameter("Bookpic");
            String Bookpictrue=request.getParameter("Bookpicture");
            Address a=new Address();
             a.setBookname(Bookname);
             a.setBooknumber(Booknumber);
             a.setBookpic(Bookpic);
             a.setBookpictrue(Bookpictrue);
             a.setBookprice(Bookprice);
             a.setBookType(BookType);
             a.setBookuid(Bookuid);
             int i=dao.getaddshop(a);
            if(i==0){
            	out.println("<script>alert('添加失败！')</script>");
            	response.sendRedirect("./admini/firstpage.jsp");
            } else{
            	out.println("<script>alert('添加成功！')</script>");
            	response.sendRedirect("./admini/accession.jsp");
            }
       }
       
       //清空购物车
       if("remove".equals(action)){
    	   session.removeAttribute("MYCART");
    	   response.setHeader("refresh","0.1;url=cart.jsp");
       }
//     删除商品
		if ("deleteshop".equals(action)) {
			String strid = request.getParameter("bookid");
			System.out.println(strid);
			int id = Integer.parseInt(strid);
			Address a=new Address();
			a.setBookid(id);
			int i = BookDAO.getdeleteshop(id);
			if (i == 0) {
				out.println("<scrpit>alert('对不起，无法删除数据')</script>");
			} else {
				out.println("<script>alert('此信息已被删除!')</script>");
				  response.setHeader("refresh","0.1;url=./admini/seeuser.jsp");
			}
			// 刷新页面
			// out.println("<script>parent.frames['main'].location.reload()</script>");
           
		}

      
//生成订单
//生成子订单
   	if("reckoning".equals(action)){
   	 String shopusername=request.getParameter("username");
     String shopmanaddress=request.getParameter("shopmanaddress");
     String phone=request.getParameter("phone");
     String fangshi=request.getParameter("fangshi");
     Map map=(Map)session.getAttribute("MYCART");
		String info="";
		Set set=map.keySet();
		for (Iterator iter = set.iterator(); iter.hasNext();) {
			String isbn = (String) iter.next();
			CartItem ci=(CartItem)map.get(isbn);
			info
			    +=" 书籍的ISBN号为："	+ci.getBook().getBookuid()
				+" 书籍名称为："+ci.getBook().getBookname()
				+" 书籍的数量为："+ci.getQuantity()
				+" 当前书籍的总价格为："+ci.getQuantity()*Double.parseDouble(ci.getBook().getBookprice());
			System.out.println(ci.getBook().getBookprice());
		}
		Orders2 order=new Orders2(); 
		order.setShopusername(shopusername);
		order.setShopphone(phone);
		order.setShopaddress(shopmanaddress);
		order.setShopfangshi(fangshi);
		order.setUserinfo(info);
		int i=dao.insertorders2(order);
		if(i>0){
		    out.println("订单生成成功！自动跳转到起始页.....");
		    response.setHeader("refresh","1;url=firstpage.jsp");
			session.removeAttribute("MYCART");
		}
		else{
			out.println("<script>alert('订单生成失败!')</script>");
		}
   	}
   	//删除订单
   	if ("deleteorder".equals(action)) {
		String strid = request.getParameter("id");
		int id = Integer.parseInt(strid);
		System.out.println(id);
        Orders2 or=new Orders2();
		or.setId(id);
		int i = BookDAO.deleteorder(id);
		if (i == 0) {
			out.println("<scrpit>alert('对不起，无法删除数据')</script>");
		} else {
			out.println("<script>alert('此信息已被删除!')</script>");
		}
		// 刷新页面
		// out.println("<script>parent.frames['main'].location.reload()</script>");
		  response.setHeader("refresh","0.1;url=./admini/order.jsp");
	}
   	if("mm".equals(action.trim())){
   		String user=(String)session.getAttribute("loginusername");
   		System.out.println(user);
   		if(user==null){
   			out.println("<script>alert('您还没登陆!')</script>");
   			response.setHeader("refresh","0.1;url=./erion.jsp");
   		}else{
   			response.sendRedirect("./dingdan.jsp");
   		}
   	}
   	//修改商品信息
   	if("updatashop".equals(action)){
   	  String strid=request.getParameter("Bookid");
   	  int id=Integer.parseInt(strid);
   	  String Bookuid=request.getParameter("Bookuid");
	  String Booknumber=request.getParameter("Booknumber");
	  String Bookprice=request.getParameter("Bookprice");
	  String BookType=request.getParameter("Booktype");
      String Bookname=request.getParameter("Bookname");
      String Bookpic=request.getParameter("Bookpic");
      String Bookpictrue=request.getParameter("Bookpicture");
      Address aa=new Address();
      BookDAO bookdao =new BookDAO();
       aa.setBookid(id);
       aa.setBookname(Bookname);
       aa.setBooknumber(Booknumber);
       aa.setBookpictrue(Bookpictrue);
       aa.setBookprice(Bookprice);
       aa.setBookType(BookType);
       aa.setBookpic(Bookpic);
       aa.setBookuid(Bookuid);
       int i=bookdao.updateshop(aa);
       if(i==0){
    	   System.out.println("修改失败！");
       }
       else{
    	   System.out.println("修改成功！");
    	  
       }
       response.setHeader("refresh","0.1;url=./admini/accession.jsp");
   	}
	}
}