cookie的操作

package com.aust.untils;

import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class cookieOperaiton {
//创建cookie
public void addCookie(String cookieName,String token,int durationDays,HttpServletResponse response){
Cookie cookie = new Cookie(cookieName, token);

//cookie存放路径
cookie.setPath("/");

//cookie存放时间（秒）
cookie.setMaxAge(durationDays*60*60*24);

//在response中加入cookie
response.addCookie(cookie);
}

 

//删除cookie
public void delCookie(String cookieName,HttpServletRequest request,HttpServletResponse response){

//request中取出cookie
Cookie[] cookies = request.getCookies();

//遍历
if(cookies != null)
for(Cookie cookie : cookies) {
if(cookie.getName().equals(cookieName)) {

//0表示立即删除该cookie
cookie.setMaxAge(0);
cookie.setPath("/");
response.addCookie(cookie);
break;
}
}
}

 

//查看cookie
public String getInfo(HttpServletRequest request,String cookieName){
String token = null;
Cookie[] cookies = request.getCookies();
if(cookies != null)
for(Cookie cookie : cookies) {
if(cookie.getName().equals(cookieName)) {
token=cookie.getValue();
break;
}
}
return token;
}
}