项目结构：
首先创建登录和注册界面，创建Login.jsp，register.jsp
Login.jsp
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html lang="en">
<head>
<base href="<%=basePath%>">
<title>学生信息管理系统</title>
<meta http-equiv="pragma" content="no-cache">