com.ieasy.basic.util.CookieSupport.java Source code

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Here is the source code for com.ieasy.basic.util.CookieSupport.java

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package com.ieasy.basic.util;

/*
 * 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.
 *
 */
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.apache.commons.lang3.StringUtils;

/**
 * @author TangLei <justinlei@gmail.com>
 * @date 2008-12-17
 */
public class CookieSupport {
    private CookieSupport() {
    }

    /**
     * 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);
        }
    }

    /**
     * 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);
    }

    /**
     * ?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;
    }
}