cookie 和session 的区别

http://www.cnblogs.com/shiyangxt/archive/2008/10/07/1305506.html

cookie存在客户端，  session存储在服务器，  

cookie的内容主要包括：名字，值，过期时间，路径和域

存取方式：

js

存值：
document.cookie ="name=value;path=pathValue;domain=domainValue;secure=secureValue";
取值：
var cookies = document.cookie.split(";");
cookies[0],cookies[1] ,....

java

cookie存值
LoginInfo loginInfo  = new LoginInfo();
loginInfo.setUsername("asd");
loginInfo.setPassword("c8e67359dda4");
Cookie userCookie=new Cookie("loginInfo",loginInfo); 
userCookie.setMaxAge(30*24*60*60);   //存活期为一个月 30*24*60*60
userCookie.setPath("/");
response.addCookie(userCookie);

cookie取值

Cookie[] cookies = request.getCookies();
for(Cookie cookie : cookies){
     if(cookie.getName().equals("loginInfo")){
          String loginInfo = cookie.getValue();
          String username = loginInfo.split(",")[0];
          String password = loginInfo.split(",")[1];
          request.setAttribute("username", username);
          request.setAttribute("password", password);
     }
}

session
取值
js 
${sessionScope.username}或者${username}

存值
<% session.setAttribute('name', 'value')%>


java
取值
request.getSession().getAttibute("name");
存值
request.getSeesion().getAttribute("name","value")