servlet之利用Cookie显示最近浏览的商品-白红宇

servlet之利用Cookie显示最近浏览的商品

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发布时间：2019-06-27

本文共 1476 字，大约阅读时间需要 4 分钟。

books.jsp<%@ page language="java" contentType="text/html; charset=UTF-8"    pageEncoding="UTF-8"%>
    
     books	
     Books Page
		
     
      Java Web
      
      
	
      
       Java
       
       
	
       
        Oracle
        
        
	
        
         Ajax
         
         
	
         
          JavaScript
          
          
 
          
           Android
           
           
 
           
            Jbpm
            
            
 
            
             Struts
             
             
 
             
              Hibernate
              
              
 
              
               Spring
               
               
 
               
               
 <% Cookie[] cookies = request.getCookies(); if(cookies!=null && cookies.length>0){ for(Cookie c:cookies){ String cookieName = c.getName(); if(cookieName.startsWith("AT_")){ out.println(c.getValue()); out.print("
               
"); } } } %> book.jsp<%@page import="java.util.ArrayList"%><%@page import="java.util.List" %><%@ page language="java" contentType="text/html; charset=UTF-8"    pageEncoding="UTF-8"%>
               
                book 
                Book Detail Page
 Book: <%= request.getParameter("book") %> 
                
                
 
                
                 Return <% String book = request.getParameter("book"); Cookie [] cookies = request.getCookies(); List
                 
                   bookCookies = new ArrayList
                  
                   (); Cookie tempCookie = null; if(cookies!=null && cookies.length>0){ for(Cookie c:cookies){ String cookieName = c.getName(); if(cookieName.startsWith("AT_")){ bookCookies.add(c); if(c.getValue().equals(book)){ tempCookie = c; } } } } if(bookCookies.size()>5 && tempCookie==null){ tempCookie = bookCookies.get(0); } if(tempCookie!=null){ tempCookie.setMaxAge(0); response.addCookie(tempCookie); } Cookie cookie = new Cookie("AT_"+book,book); response.addCookie(cookie); %>