获取 cookie 里内容

public String[] getUsernameAndTokenFromCookies(HttpServletRequest request){

    String[] usernameAndToken = new String[2];

    Cookie[] cookies = request.getCookies();

    String usernameInCookie = null;

    String tokenInCookie = null;

    if( cookies != null ){

        for (int i = 0; i < cookies.length; i++){

            Cookie cookie = cookies[i];

            if (cookie.getName().equals("username")){

                usernameInCookie = cookie.getValue();

            }

            if (cookie.getName().equals("token")){

                tokenInCookie = cookie.getValue();

            }

        }

    }

    usernameAndToken[0] = usernameInCookie;

    usernameAndToken[1] = tokenInCookie;

    return usernameAndToken;

}