删除ie cookie

 

Cookie[] cookies = request.getCookies();
		if (cookies != null) {
			for (int i = 0; i < cookies.length; i++) {
				Cookie cookie = cookies[i];
				if (USERCOOKIENAME.equals(cookie.getName())) {
					//这里是关键，在ie中必须将value设置为空，ie中的cookie才会真正清楚掉，而ff则不是必要的
					cookie.setValue("");
					cookie.setDomain("ddmap.com");
					cookie.setPath("/");
					cookie.setMaxAge(0);
					response.addCookie(cookie);
					request.getSession().invalidate();
				}
			}
		}