<%

    String LoginUsername = "";

    String LoginPassword = "";

    try {

        //获取当前站点的所有Cookie

        Cookie[] cookies = request.getCookies();

        for (int i = 0; i < cookies.length; i++) {//对cookies中的数据进行遍历，找到用户名、密码的数据

            if ("LoginUsername".equals(cookies[i].getName())) {

                LoginUsername = cookies[i].getValue();

            } else if ("LoginPassword".equals(cookies[i].getName())) {

                LoginPassword = cookies[i].getValue();

            }

        }

    } catch (Exception e) {

//        e.printStackTrace();

//        ser 调出错误输出 idea快捷键

        System.err.println("java.lang.NullPointerException:: "+"from index.jsp:69");

    }

%>