/**
    * CookieUtil.java 初始创建时间:Jun 24, 2009
    * Copright(t)2009-2010 www.glodon.com.cn,All Rigths Reserved
    */
   package gboat2.base.bridge.util.http;
   
   import javax.servlet.http.Cookie;
   import javax.servlet.http.HttpServletRequest;
   import javax.servlet.http.HttpServletResponse;
  
  /**
   * Cookie 工具类
   * 
   * @author zengjm
   * @sinace 1.0
   */
  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 响应对象
       */
      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 响应对象
       */
      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 request 请求对象
       * @param name 参数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;
      }
  }