图书信息完善（未登录,结账,购物车里的数量,继续购买,登录名,退出） -

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图书信息完善（未登录,结账,购物车里的数量,继续购买,登录名,退出）

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java web

图书未登陆显示继续购买和书名登录名变成“登录”购物车数量和第三次作业一样

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">
    
    <title>My JSP 'FalseLogin.jsp' starting page</title>
    
	<meta http-equiv="pragma" content="no-cache">
	<meta http-equiv="cache-control" content="no-cache">
	<meta http-equiv="expires" content="0">    
	<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
	<meta http-equiv="description" content="This is my page">
	<!--
	<link rel="stylesheet" type="text/css" href="styles.css">
	-->

  </head>
  
  <body>
    This is my JSP page. <br>
    <hr/><div align="center"><font size="6">
</font><font size="6" color="#ff8040">    尊敬的用户请登录之后在进行购买操作！</font>
     
  </div>
  <br/>
  <div align="center"> 
  <a href="Login.jsp">登陆</a> 
   
  </div></body>
</html>

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<%@ page import="com.Bookinfo.web.util.Book" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">
    
    <title>My JSP 'Continue.jsp' starting page</title>
    
	<meta http-equiv="pragma" content="no-cache">
	<meta http-equiv="cache-control" content="no-cache">
	<meta http-equiv="expires" content="0">    
	<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
	<meta http-equiv="description" content="This is my page">
	<!--
	<link rel="stylesheet" type="text/css" href="styles.css">
	-->

  </head>
  
  <body>
    This is my JSP page. <br>
    <hr/><div align="center"> 
    尊敬的用户:<font color="#ff8040"><%=session.getAttribute("LoginName") %></font>,你已经成功购买此书！
       
       <%! double num=0;   
           String bookName;
       %>
       
       <%
	     List<Book> listBook=(ArrayList)session.getAttribute("CartMessage");
	     num=0;
	     for(int i=0;i<listBook.size();i++){
	        Book b=listBook.get(i);
	        num=b.getPrice();
	        bookName=b.getName();
	     %>
	     
	     <%} %>
	     您购买的这本书的名字是：<%=bookName %>
	     
	     您购买的这本书的单价是：<%=num %>
    </div>
      <br/>
    <div align="center"><a href="BookTable.jsp">继续购买</a> 
    <a href="index.jsp">返回首页</a></div>
  </body>
</html>

package com.Bookinfo.Servlet.util;

import java.io.IOException;
import java.io.PrintWriter;

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

public class CancleServlet extends HttpServlet {

	/**
	 * 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 {

		response.setContentType("text/html");
		request.getSession().removeAttribute("LoginName");
		response.sendRedirect("index.jsp");
		
	}

}

package com.Bookinfo.Servlet.util;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.List;

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.Bookinfo.BFace.util.CartIface;
import com.Bookinfo.BImple.util.CartImple;
import com.Bookinfo.web.util.Book;

public class CartServlet extends HttpServlet {

	/**
	 * 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 {

		response.setContentType("text/html;charset=UTF-8");
		
		HttpSession sess=request.getSession();
		
		//判断登录名是否为空
		if(sess.getAttribute("LoginName")==null){
			
			response.sendRedirect("FalseLogin.jsp");
			
		}else{
			String bookId=request.getParameter("bookId");//得到用户购买的图书的id
			
			//将用户的图书的id存放到购物车中去中
			List<Integer> cart=(List<Integer>)sess.getAttribute("cartFrist");
			
			//将图书id添加进去
			cart.add(Integer.parseInt(bookId));
			
			
			//得到购物车里面的信息
			CartIface ciface=new CartImple();
			
			List<Integer> listCartID=(List<Integer>) sess.getAttribute("cartFrist");
			
			
			List<Book>  listbook=new ArrayList<Book>();
			
			for (int i = 0; i <listCartID.size(); i++) {
				
				Book bo=ciface.getBookById(listCartID.get(i));
				
				listbook.add(bo);
			}

			sess.setAttribute("CartMessage",listbook);
			response.sendRedirect("Continue.jsp");
			
		}
	}

}

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<%@ page import="com.Bookinfo.web.util.Book" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">
    
    <title>My JSP 'index.jsp' starting page</title>
	<meta http-equiv="pragma" content="no-cache">
	<meta http-equiv="cache-control" content="no-cache">
	<meta http-equiv="expires" content="0">    
	<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
	<meta http-equiv="description" content="This is my page">
	<!--
	<link rel="stylesheet" type="text/css" href="styles.css">
	-->
  </head>
  
  <body>
   <%! int sumBook=0; %>
 
   <%if(session.getAttribute("LoginName")!=null){
   %>
     <%=session.getAttribute("LoginName") %>
              购物车里面有
     <%
	     List<Book> listBook=(ArrayList)session.getAttribute("cartFrist");
		 sumBook=listBook.size();  
	  %>
   	<%=sumBook %>件商品
   <% 
   }else{
     
   %>
     <a href="Login.jsp">登陆</a>
    <%
    }
     %>
     <a href="Cancle">退出</a>
   <a href="bookTable">查看信息</a>
   <a href="CartMessageServlet">查看购物车</a>       
 

  </body>
</html>

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struts2.0第一个项目 | jw图书购买功能

2012-12-19 22:32
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