cookie工具类2

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


//import org.apache.log4j.Logger;


public class CookieUtil {


    /**
     * 设置cookie有效期，根据需要自定义[本系统设置为7天]
     */
    private final static int COOKIE_MAX_AGE = 60 * 60 * 24 * 7;
    
    /**
     * 设置cookie域，默认为：youweb.com]
     */
    private final static String COOKIE_DOMAIN = "youweb.com";
    
    /**
     * 设置默认路径：/，这个路径即该工程下都可以访问该cookie 如果不设置路径，那么只有设置该cookie路径及其子路径可以访问
     */
    private final static String COOKIE_PATH = "/";
    
    /**
    *
    * @desc 删除指定Cookie
    * @param response
    * @param cookie
    */
   public static void removeCookie(HttpServletResponse response, Cookie cookie) {
       if (cookie != null) {
           cookie.setPath(COOKIE_PATH);
           cookie.setValue("");
           cookie.setMaxAge(0);
           cookie.setDomain(COOKIE_DOMAIN);
           response.addCookie(cookie);
       }
   }
   /**
   * @desc 删除指定名称的Cookie
   * @param response
   * @param cookie
   */
  public static void removeCookie(HttpServletResponse response, String name) {
 Cookie cookie = new Cookie(name,"");
      cookie.setPath(COOKIE_PATH);
      cookie.setMaxAge(0);
      cookie.setDomain(COOKIE_DOMAIN);
      response.addCookie(cookie);
  }


   /**
    * @desc 删除指定Cookie
    * @param response
    * @param cookie
    * @param domain
    */
   public static void removeCookie(HttpServletResponse response, Cookie cookie, String domain) {
  if (cookie != null) {
           cookie.setPath(COOKIE_PATH);
           cookie.setValue("");
           cookie.setMaxAge(0);
           cookie.setDomain(domain);
           response.addCookie(cookie);
        }
   }
   
   /**
   * @desc 删除指定名称的Cookie
   * @param response
   * @param cookie
   */
  public static void removeCookie(HttpServletResponse response, String name, String domain) {
 Cookie cookie = new Cookie(name,"");
      cookie.setPath(COOKIE_PATH);
      cookie.setMaxAge(0);
      cookie.setDomain(domain);
      response.addCookie(cookie);
  }


   /**
    *
    * @desc 根据Cookie名称得到Cookie的值，没有返回Null
    * @param request
    * @param name
    * @return
    */
   public static String getCookieValue(HttpServletRequest request, String name) {
       Cookie cookie = getCookie(request, name);
       if (cookie != null) {
           return cookie.getValue();
       }else{
           return null;
       }
   }


   /**
    *
    * @desc 根据Cookie名称得到Cookie对象，不存在该对象则返回Null
    * @param request
    * @param name
    */
   public static Cookie getCookie(HttpServletRequest request, String name) {
       Cookie cookies[] = request.getCookies();
       if (cookies == null || name == null || name.length() == 0){
      return null;
       }
       Cookie cookie = null;
       for (int i = 0; i < cookies.length; i++) {
           if (!cookies[i].getName().equals(name)){
          continue;
           }      
           cookie = cookies[i];
           if (request.getServerName().equals(cookie.getDomain())){
          break;
           }
       }
       return cookie;
   }


   /**
    * @desc 添加一条新的Cookie信息，默认有效时间为一周
    * @param response
    * @param name
    * @param value
    */
   public static void setCookie(HttpServletResponse response, String name, String value) {
       setCookie(response, name, value, COOKIE_MAX_AGE);
   }
   
   /**
    * @desc 添加一条新的Cookie信息，默认有效时间为一周
    * @param response
    * @param name
    * @param value
    */
   public static void setCookie(HttpServletResponse response, String name, String value,String domain) {
       setCookie(response, name, value, COOKIE_MAX_AGE, domain);
   }


   /**
    * @desc 添加一条新的Cookie信息，可以设置其最长有效时间(单位：秒)
    * @param response
    * @param name
    * @param value
    * @param maxAge
    */
   public static void setCookie(HttpServletResponse response, String name, String value, int maxAge) {
  setCookie(response, name, value, maxAge, COOKIE_DOMAIN);
   }
   
   /**
   *
   * @desc 添加一条新的Cookie信息，可以设置其最长有效时间(单位：秒)
   * @param response
   * @param name
   * @param value
   * @param maxAge
   * @param domain
   */
  public static void setCookie(HttpServletResponse response, String name, String value, int maxAge,String domain) {
      if (value == null){
      value = "";
      }
      Cookie cookie = new Cookie(name, value);
      if(maxAge!=0){
          cookie.setMaxAge(maxAge);
      }else{
          cookie.setMaxAge(COOKIE_MAX_AGE);
      }
      cookie.setPath(COOKIE_PATH);
      if (domain!=null&&!domain.equals("")){
     cookie.setDomain(domain);
      }
      response.addCookie(cookie);
  }
}