一.项目介绍
本系统主要实现对基于Javaweb学生信息管理系统所需的各项基本功能，能够对学生信息进行增删改查等功能，并可以实现用户注册、用户登陆等功能。
数据库：Mysql
开发工具：Eclipse
开发环境：JDK+Tomcat
二.运行效果
1.登录界面
2.主界面（点击学号修改学生信息）
3.增加学生界面
三.项目目录结构
四.代码展示
1.jsp及css代码
①登录界面代码（login.jsp）
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<link href="css/login.css" type="text/css" rel="stylesheet">
<meta charset="UTF-8">
<title>学生信息管理系统-登录界面</title>
</head>
<body>
<form action="CheckLoginServlet" method="post">
<div class="content">
<div class="wrap">
<div class="login-box">
<div class="login-frame">
<h2>
用户登录 <a href="register.jsp"> 立即注册</a>
</h2>
<div class=item>
<input type="text" name="UID" placeholder="用户名">
</div>
<div class=item>
<input type="password" name="upwd" placeholder="密码">
</div>
<input type="submit" class="login-btn" value="登 录">
<div class=item1>
<a href="UpdateLoginPwd.jsp"> 修改密码</a>
<a href="DeleteLoginID.jsp"> 注销用户</a>
</div>
<%
String error = (String) request.getAttribute("error");
String error0 = (String) request.getAttribute("error0");
String error1 = (String) request.getAttribute("error1");
String error2 = (String) request.getAttribute("error2");
String error3 = (String) request.getAttribute("error3");
String error4 = (String) request.getAttribute("error4");
if (error != null) {
if (error.equals("loginError")) {
out.println("用户名或密码错误！登录失败！");
} else if (error.equals("nologinError")) {
response.sendRedirect("QueryStudentByPageServlet");
}
}
if (error0 != null) {
if (error0.equals("loginError")) {
out.println("用户名或密码错误！修改失败！");
} else if (error0.equals("nologinError")) {
if (error1 != null) {
if (error1.equals("noupdateError")) {
out.println("密码修改成功！");
}
}
}
}
if (error2 != null) {
if (error2.equals("loginError")) {
out.println("用户名或密码错误！注销失败！");
} else if (error2.equals("nologinError")) {
if (error3 != null) {
if (error3.equals("nodeleteError")) {
out.println("账户注销成功！");
}
}
}
}
if (error4 != null) {
if (error4.equals("noaddError")) {
out.println("账户注册成功！");
}
}
%>
</div>
</div>
</div>
</div>
</form>
</body>
</html>
②登录界面css（login.css）
*{margin:0;padding:0;}
a{text-decoration:none;color:#666;}
a:hover{
text-decoration:underline;
color:E4393C;
}
html,body
{
font:12px/150% Arial,Verdana;
}
.wrap{
width:1000px;
margin:0 auto;
}
.left{
float:left;
}
.content{
background:url(../image/login.jpg);
background-size: cover;
width:1280px;
height:559px;
}
.login-frame{
margin:50px 5% 50px 5%;
float:right;
padding:60px;
background:white;
background-color:rgba(255,255,255,0.9);
border-radius:25px;
order-right:1px #bdbdbd solid;
width:280px;
height:230px;
}
.login-frame h2{
font-size:25px;
height:40px;
margin-buttom:25px;
}
.login-frame h2 a{
font-size:15px;
color:#59c2c5;
padding-left:20px;
background:url(../image/icon5.jpg)no-repeat;
}
.login-frame .item{
height:60px;
margin-buttom:40px;
}
.login-frame .item input{
line-height:40px;
width:260px;
border:none;
border-bottom: 1px solid #59c2c5;
}
.login-btn{
display:block;
height:50px;display:block;
height:50px;
color:#fff;
background:#59c2c5;
width:265px;
font-size:16px;
line-height:30px;
text-align:center;
border-radius:10px;
border:none;
color:#fff;
background:#59c2c5;
width:265px;
font-size:16px;
line-height:30px;
text-align:center;
border-radius:10px;
border:none;
}
.login-frame .item1{
dislpay:flex;
justify-content: space-between;
margin-top:1 rem;
}
.login-frame .item1 a{
line-height:40px;
font-size:1.1rem;
margin-top:5 rem;
padding:1rem 3rem;
}
③注册用户界面（register.jsp）
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<link href="css/index.css" type="text/css" rel="stylesheet">
<meta charset="UTF-8">
<script type = "text/javascript" src = "js/jquery-3.6.0.js"></script>
<script type = "text/javascript">
function check()
{
var UID = $("#UID").val();
var upwd = $("#upwd").val();
var upwd1 = $("#upwd1").val();
if(upwd != upwd1){
alert("两次输入的密码不一致，请重新输入！");
return false;
}
return true;
}
$(document).ready(function(){
});
</script>
<title>注册账号</title>
</head>
<body>
<form action = "AddLoginIDServlet" method = "post" onsubmit = "return check()">
<div class = "content">
<div class = "box">
<div class = "item1">
<h2>用户注册</h2>
</div>
<div class = "item">
<input type = "text" name = "UID" id = "UID" placeholder="账号"/><br/>
</div>
<div class = "item">
<input type = "password" name = "upwd" id = "upwd" placeholder="密码"/><br/>
</div>
<div class = "item">
<input type = "password" name = "upwd1" id = "upwd1" placeholder="确认密码"/><br/>
</div>
<input type = "submit" class = "btn" value = "注册"/><br/>
<a href = "login.jsp">返回</a>
<%
String error4 = (String) request.getAttribute("error4");
if (error4!= null) {
if (error4.equals("addError")) {
out.println("注册失败！账户名已经存在！");
}
}
%>
</div>
</div>
</form>
</body>
</html>
④注册用户界面css（index.css）
*{margin:0;padding:0;}
html,body
{
font:12px/150% Arial,Verdana;
}
.content{
background:url(../image/login.jpg);
background-size: cover;
width:1280px;
height:559px;
}
.box{
margin:60px 18% 60px 18%;
float:right;
padding:30px;
background:white;
background-color:rgba(255,255,255,0.9);
border-radius:15px;
}
.item{
height:60px;
margin-buttom:40px;
}
.item input{
line-heigh
