CookieUtils.java

package org.verisign.joid.util;

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

/**
 * User: treeder
 * Date: Aug 8, 2007
 * Time: 5:18:08 PM
 */
public class CookieUtils
{
    /** Default age is 30 days */
    private static final int DEFAULT_AGE = 60 * 60 * 24 * 30;

    /**
     * Sets the cookie
     * @param response
     * @param cookieName
     * @param value
     */
    public static void setCookie(HttpServletResponse response,
                                 String cookieName, String value)
    {
        Cookie cookie = new Cookie(cookieName, value);
        cookie.setMaxAge(DEFAULT_AGE);
        response.addCookie(cookie);
    }

    /**
     * Returns the value of the cookie specified by cookieName or defaultValue if
     * Cookie does not exist.
     *
     * @param request
     * @param cookieName
     * @param defaultValue
     * @return
     */
    public static String getCookieValue(HttpServletRequest request,
                                        String cookieName,
                                        String defaultValue)
    {
        Cookie cookie = getCookie(request, cookieName);
        if(cookie == null) return defaultValue;
        else return cookie.getValue();
    }

    public static Cookie getCookie(HttpServletRequest request, String cookieName)
    {
        Cookie[] cookies = request.getCookies();
        if(cookies == null) return null;
        for (int i = 0; i < cookies.length; i++) {
            Cookie cookie = cookies[i];
            if (cookieName.equals(cookie.getName()))
                return cookie;
        }
        return null;
    }
}