public static void clearCookie(HttpServletRequest request,HttpServletResponse response) {
Cookie[] cookies = request.getCookies();
for(int i=0;i<cookies.length;i++)
{
//System.out.println(cookies[i].getName() + ":" + cookies[i].getValue());
Cookie cookie = new Cookie(cookies[i].getName(), null);
cookie.setMaxAge(0);
cookie.setPath("/");//根据你创建cookie的路径进行填写
response.addCookie(cookie);
}
}