/*
* CookieSupport.java
* Copyright (C) 2007-3-19 <JustinLei@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
package org.lambdasoft.web.support;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.lambdasoft.utils.StringUtils;
/**
* @author TangLei <justinlei@gmail.com>
* @date 2008-12-17
*/
public class CookieSupport {
private CookieSupport() {
}
/**
* 寫cookies
*
* @param response
* @param cookieParams
* @param maxAge
*/
public static final void writeCookies(HttpServletResponse response,
Map<String, String> cookieParams, int maxAge) {
if (cookieParams == null || cookieParams.size() == 0)
return;
Set<String> keySet = cookieParams.keySet();
for (String key : keySet) {
Cookie cookie = new Cookie(key, cookieParams.get(key));
cookie.setMaxAge(maxAge);
response.addCookie(cookie);
}
}
/**
* 刪除所有的cookies
* @param request
* @param response
*/
public static final void removeAllCookies(HttpServletRequest request,HttpServletResponse response) {
Cookie[] cookies = request.getCookies();
if(cookies == null || cookies.length == 0)
return;
Map<String, String> cookiesMap = new HashMap<String, String>();
for (Cookie cookie : cookies) {
cookiesMap.put(cookie.getName(),"");
}
writeCookies(response, cookiesMap, 0);
}
/**
* 讀取cookies
*
* @param request
* @param cookieName
* @return
*/
public static final Cookie[] readCookies(HttpServletRequest request,String cookieName) {
Cookie[] cookies = request.getCookies();
if(cookies == null || cookies.length == 0)
return null;
if(StringUtils.isEmpty(cookieName))
return cookies;
for (int i = 0; i < cookies.length; i++) {
if(cookies[i].getName().equals(cookieName))
return new Cookie[] {cookies[i]};
}
return null;
}
}