java web利用jsp完成简单的学生管理系统
index.jsp
<%@ page language="java" import="java.sql.*" pageEncoding="utf-8"%>
<%@ page errorPage="error.jsp"%>
<html>
<head>
<title>学生信息管理系统</title>
<link rel="stylesheet" type="text/css" href="css/style.css">
</head>
<body>
<h1>学生信息管理系统</h1>
<a href="add.jsp">添加学生信息</a>
<br />
<br />
<table style="width: 50%;">
<tr>
<th>学号</th>
<th>姓名</th>
<th>性别</th>
<th>出生日期</th>
<th>地址</th>
<th>管理</th>
</tr>
<%
try {
Class.forName("com.mysql.cj.jdbc.Driver");
Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/web_lab03?&useSSL=false&serverTimezone=UTC", "root", "");
//使用Statement对象
Statement stmt = con.createStatement();
ResultSet rs = stmt.executeQuery("select * from student"); /*
PreparedStatement stmt = con.prepareStatement("select * from bookinfo");
ResultSet rs = stmt.executeQuery();
*/
while (rs.next()) {
String uid = rs.getString(1);
out.println("<tr><td>" + rs.getString(1) + "</td><td>" + rs.getString(2) + "</td><td>" + rs.getString(3) + "</td><td>"
+ rs.getString(4) + "</td><td>" + rs.getString(5) + "</td><td><a href='edit.jsp?uid=" + uid
+ "'>修改</a> <a href='del.jsp?uid=" + uid + "'>删除</a></td></tr>");
}
rs.close();
stmt.close();
con.close();
} catch (Exception e) {
out.println("Exception:" + e.getMessage());
}
%>
</table>
</body>
</html>
add.jsp
<%@ page contentType="text/html; charset=utf-8" import="java.sql.*" errorPage="error.jsp"%>
<html>
<head>
<title>添加学生信息</title>
<link rel="stylesheet" type="text/css" href="css/style.css">
</head>
<body>
<form name="info" action="addsave.jsp" method="post" onsubmit="return check()">
<h2>添加学生信息</h2>
<table style="width: 50%">
<tr>
<th width="30%">学号：</th>
<td width="70%"><input name="uid" type="text"></td>
</tr>
<tr>
<th>姓名：</th>
<td><input name="name" type="text"></td>
</tr>
<tr>
<th>性别：</th>
<td>
<input type="radio" name="sex" value="男">男
<input type="radio" name="sex" value="女">女
</td>
</tr>
<tr>
<th>出生日期：</th>
<td><input type="date" name="birthday"></td>
</tr>
<tr>
<th>地址：</th>
<td><input name="address" type="text"></td>
</tr> <tr>
<td colspan="2">
<input type="submit" name="submit" value="提交">
<input type="reset" value="重置">
</td>
</tr>
</table>
</form> </body>
<script type="text/javascript">
function check(){
if(info.name.value==""||info.name.value==null){
alert("请输入姓名!");
return false;
}
if(info.sex.value==""||info.sex.value==null){
alert("请选择性别！");
return false;
}
if(info.birthday.value==""||info.birthday.value==null){
alert("请选择出生日期！");
return false;
}
if(info.address.value==""||info.address.value==null){
alert("请输入地址！");
return false;
}
}
</script>
</html>
addsave.jsp
<%@ page contentType="text/html; charset=utf-8" import="java.sql.*" errorPage="error.jsp"%>
<html>
<head>
<title>添加图书信息</title>
<link rel="stylesheet" type="text/css" href="css/style.css">
</head>
<body>
<%
request.setCharacterEncoding("utf-8"); String uid = request.getParameter("uid");
String name = request.getParameter("name");
String sex = request.getParameter("sex");
String birthday = request.getParameter("birthday");
String address = request.getParameter("address"); Class.forName("com.mysql.cj.jdbc.Driver");
Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/web_lab03?&useSSL=false&serverTimezone=UTC", "root", "");
//使用Statement对象
//Statement stmt = con.createStatement();
//String sql = "insert into bookinfo(bookname,author,price) values('" + bookname + "','" + author + "'," + price + ")";
//int i = stmt.executeUpdate(sql); PreparedStatement stmt = con.prepareStatement("insert into student(uid,name,sex,birthday,address) values(?, ?, ?, ?, ?)");
stmt.setString(1, uid);
stmt.setString(2, name);
stmt.setString(3, sex);
stmt.setString(4, birthday);
stmt.setString(5, address);
int i = stmt.executeUpdate(); if (i == 1) {
out.println("<h2>添加成功！</h2><br/>");
out.println("<a href='index.jsp'>返回首页</a>");
} else {
out.println("<h2>添加失败！</h2><br/>");
out.println("<a href='add.jsp'>重新添加</a>");
}
stmt.close();
con.close(); %>
</body>
</html>
del.jsp
<%@ page contentType="text/html; charset=utf-8" language="java" import="java.sql.*" pageEncoding="utf-8"%>
<html>
<head>
<title>删除学生信息</title>
<link rel="stylesheet" type="text/css" href="css/style.css">
</head>
<body>
<%
request.setCharacterEncoding("utf-8");
Class.forName("com.mysql.cj.jdbc.Driver");
Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/web_lab03?&useSSL=false&serverTimezone=UTC", "root", "");
Statement stmt=con.createStatement();
String uid=request.getParameter("uid");
int i=stmt.executeUpdate("delete from student where uid="+uid);
if(i==1)
{
out.println("<h2>删除成功！</h2><br/>");
}
else
{
out.println("<h2>删除失败！</h2><br/>");
}
out.println("<a href='index.jsp'>返回首页</a>");
stmt.close();
con.close(); %>
</body>
</html>
edit.jsp
<%@ page import="java.sql.*" pageEncoding="utf-8" errorPage="error.jsp"%>
<html>
<head>
<title>修改学生信息</title>
<link rel="stylesheet" type="text/css" href="css/style.css">
</head>
<body>
<%
request.setCharacterEncoding("utf-8");
String uid = request.getParameter("uid");
Class.forName("com.mysql.cj.jdbc.Driver"); Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/web_lab03?&useSSL=false&serverTimezone=UTC", "root", "");
//Statement stmt = con.createStatement();
//ResultSet rs = stmt.executeQuery("select * from bookinfo where id=" + id); PreparedStatement stmt = con.prepareStatement("select * from student where uid=?");
stmt.setString(1, uid);
ResultSet rs = stmt.executeQuery(); rs.next();
%>
<form action="editsave.jsp" method="post">
<h2>修改学生信息</h2>
<table style="width:50%">
<tr>
<th width="30%">姓名：</th>
<td width="70%"><input name="name" type="text"
value="<%=rs.getString(2)%>"></td>
</tr>
<tr>
<th>出生日期：</th>
<td><input name="birthday" type="date"
value="<%=rs.getString(4)%>"></td>
</tr>
<tr>
<th>地址：</th>
<td><input name="address" type="text"
value="<%=rs.getString(5)%>"></td>
</tr>
<tr>
<td colspan="2">
<input type="hidden" name="uid" value="<%=uid%>">
<input type="submit" value="修改">
<input type="reset"value="重置">
</td>
</tr>
</table>
</form>
<%
rs.close();
stmt.close();
con.close();
%>
</body>
</html>
editsave.jsp
<%@ page import="java.sql.*" pageEncoding="utf-8" errorPage="error.jsp"%>
<html>
<head>
<title>修改完成</title>
<link rel="stylesheet" type="text/css" href="css/style.css">
</head>
<body>
<%
request.setCharacterEncoding("utf-8"); String uid = request.getParameter("uid");
String name = request.getParameter("name");
String birthday = request.getParameter("birthday");
String address = request.getParameter("address");
System.out.println(uid+name+birthday+address); Class.forName("com.mysql.cj.jdbc.Driver");
Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/web_lab03?&useSSL=false&serverTimezone=UTC", "root", "");
Statement stmt = con.createStatement(); //String sql = "update student set name='" + name + "',birthday='" + birthday + "',address=" + address + " where uid=" + uid;
String sql="update student set name='"+ name +"',birthday='"+ birthday +"',address='"+ address +"'where uid='"+ uid +"'"; int i = stmt.executeUpdate(sql);
if (i == 1) {
out.println("<h2>修改成功！</h2><br/>");
out.println("<a href='index.jsp'>返回首页</a>");
} else {
out.println("<h2>修改失败！</h2><br/>");
out.println("<a href='edit.jsp?uid='" + uid + ">重新添加</a>");
}
stmt.close();
con.close();
%>
</body>
</html>
error.jsp
<%@ page language="java" isErrorPage="true" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>error page</title>
</head>
<body>
错误信息为：<br/>
<%=exception.getMessage()%><br>
<%=exception.toString()%>
</body>
</html>
css
body {
text-align: center;
}
table {
width: 400px;
border: 1px solid #696969;
border-collapse: collapse;
margin:0 auto;
}
th {
border: 1px solid #696969;
background-color: #FFF8DC;
}
td {
text-align: center;
border: 1px solid #696969;
height: 50px;
background-color: #E0FFFF;
}
input {
font-size: 20px;
}
数据库结构截图
程序截图
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