简单购物车和登录界面的java程序.doc

GoodsBean.javapackage bean;public class GoodsBean String id;String name;int price;int count;public GoodsBean()public GoodsBean(String id,String name,int price,int count)this.id=id;.public String getId() return id;public void setId(String id) this.id = id;.CartBean.javapackage bean;import java.util.ArrayList;import java.util.Iterator;public class CartBean ArrayList items;public CartBean()this.items=new ArrayList();public void addItem(GoodsBean item)items.add(item);public ArrayList getItems()return this.items;public int getTotalPrice()int total=0;Iterator it=items.iterator();while(it.hasNext()GoodsBean item=(GoodsBean)it.next();total=total+item.getPrice()*item.count;return total;CartServlet.javapackage servlet;import java.io.IOException;import javax.servlet.*;import javax.servlet.http.*;public class CartServlet extends HttpServlet public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException String id=request.getParameter(id);String name=request.getParameter(name);int price=Integer.parseInt(request.getParameter(price);int count=Integer.parseInt(request.getParameter(count);bean.GoodsBean item=new bean.GoodsBean(id,name,price,count);bean.CartBean cb=(bean.CartBean)request.getSession().getAttribute(cb);if(cb=null)cb=new bean.CartBean();cb.addItem(item);request.getSession().setAttribute(cb,cb);response.sendRedirect(shopping.jsp);public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException doGet(request,response);index.jsp购物界面 商品序号 .商品名称、商品单价、购买数量、购买操作 shopping.jspshopping.jsp%CartBean cb=(CartBean)session.getAttribute(cb);if(cb!=null)ArrayList items=cb.getItems();for(Iterator it=items.iterator();it.hasNext();)GoodsBean item=(GoodsBean)it.next();out.println(商品序号+item.getId();out.println(商品名称+item.getName();out.println(商品价格+item.getPrice();out.println(商品数量+item.getCount();out.println();out.println(商品总价+cb.getTotalPrice();elseout.println(购物车没有商品);%继续购物 001 apple 12 .002.003.004查看购物车UserBean.javapackage bean;public class UserBean private String name;private String pwd;public String getName() return name;public void setName(String name) = name;public String getPwd() return pwd;public void setPwd(String pwd) this.pwd = pwd;UserCheckBean.javapackage bean;public class UserCheckBean protected UserBean user;public UserCheckBean() public UserCheckBean(UserBean user) this.user = user;public UserBean getUser() return user;public void setUser(UserBean user) this.user = user;public boolean validate()String name=user.getName();String pwd=user.getPwd();if(zhangsan.equals(name)&123.equals(pwd)return true;elsereturn false;ControllerServlet.javapackage servlet;import java.io.*;import javax.servlet.*;import javax.servlet.http.*;import bean.*;public class ControllerServlet extends HttpServlet public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException request.setCharacterEncoding(GBK);response.setContentType(text/html;charset=GBK);UserBean user=new UserBean();user.setName(request.getParameter(name);user.setPwd(request.getParameter(pwd);UserCheckBean uc=new UserCheckBean(user);RequestDispatcher rd;if(uc.validate()HttpSession session=request.getSession();session.setAttribute(user, user);rd=request.getRequestDispatcher(welcome.jsp);rd.forward(request, response);elserd=request.getRequestDispatcher(loginer.jsp);rd.forward(requ