Java_CookieUtil

package com.willow.util;

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

/**
* CookieUtil用来操作cookie的存取
* @author GetInstance
*
*/
public class CookieUtil {
/**
* 添加cookie
* @param name cookie的key
* @param value cookie的value
* @param domain domain
* ＠param  path path
* @param maxage  最长存活时间 单位为秒
* @param response
*/
public static void addCookie(String name ,String value,String domain,
int maxage,String path, HttpServletResponse response){
Cookie cookie = new Cookie(name,value);
if(domain!=null){
cookie.setDomain(domain);
}
cookie.setMaxAge(maxage);
cookie.setPath(path);
response.addCookie(cookie);
}

/**
* 往根下面存一个cookie
* * @param name cookie的key
* @param value cookie的value
* @param domain domain
* @param maxage  最长存活时间 单位为秒
* @param response
*/
public static void addCookie(String name ,String value,String domain,
int maxage, HttpServletResponse response){
addCookie(name, value,domain, maxage, "/" , response);
}

/**
* 从cookie值返回cookie值，如果没有返回 null
* @param req
* @param name
* @return cookie的值
*/
public static String getCookie(HttpServletRequest request, String name) {
Cookie[] cookies = request.getCookies();
if (cookies == null) return null;
for (int i = 0; i < cookies.length; i++) {
if (cookies[i].getName().equals(name)) {
return cookies[i].getValue();
}
}
return null;
}

public static void removeCookie(String name, String domain, HttpServletRequest request, HttpServletResponse response) {
String cookieVal = getCookie(request,name);
if(cookieVal!=null){
CookieUtil.addCookie(name, null, domain, 0, response);
}
}

public static void removeCookie(String name, HttpServletRequest request, HttpServletResponse response) {
CookieUtil.removeCookie(name, ".dhgate.com", request, response);
}
}