main.jsp:
<%@ page contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>登录系统</title>
</head>
<form id="1" action ="denlv.jsp" method="get">
<p style="text-align:center;color:black;font-family:楷体; font-size:20px">
<br>
身份:
<select size ="1"name="calss">
<option value ="学生" selected>学生</option>
<option value ="教师" >教师</option>
<option value ="管理员" >管理员</option>
</select>
<br><br>
账号:
<input type="text" name="num"size="15"/>
<br><br>
密码:
<input type="password" name="pass"size="16"/>
<br><br>
<br><br>
<input type="submit" value="登录"/>
<input type="reset" value="重置"/>
</p>
</form>
</html>
denlv.jsp
<%@page import="aD.Ac"%>
<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>登录处理</title>
</head>
<body>
<jsp:useBean id="util" class="aD.Ac" scope="page" />
<%
String calss=(String)request.getParameter("calss");
session.setAttribute("calss", calss);
String num=(String)request.getParameter("num");
session.setAttribute("num", num);
String pass=(String)request.getParameter("pass");
session.setAttribute("pass", pass);
if(util.queryEmpty(num, pass)){
out.print("<script language =‘javaScript‘> alert(‘输入不能为空‘);window.history.back(-1); </script>");
}else if(util.inquiryNumber(num,calss)){
out.print("<script language =‘javaScript‘> alert(‘未查询到改账号‘);window.history.back(-1); </script>");
}else if(util.denlv(calss, num, pass)){
out.print("<script language =‘javaScript‘> alert(‘密码错误‘);window.history.back(-1); </script>");
}else{
out.print("<script language=‘javaScript‘> alert(‘登录成功‘);</script>");
if(calss.equals("教师")){
response.setHeader("refresh", "0;url=teacher.jsp");
}else if(calss.equals("学生")){
response.setHeader("refresh", "0;url=student.jsp");
}else if(calss.equals("管理员")){
response.setHeader("refresh", "0;url=contrul.jsp");
}
}
%>
</body>
</html>
contrul.jsp
<%@ page contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>教师系统</title>
</head>
<p style="text-align:center;color:black;font-family:宋体,serif; font-size:20px">
<a>管理员</a>
<br>
<br><br>
<input type="button" value="添加教师" onclick="location.href=‘NewTeacher.jsp‘" />
<br><br>
<input type="button" value="添加学生" onclick="location.href=‘addStudent.jsp‘" />
<br><br>
<input type="button" value="登出" onclick="location.href=‘main.jsp‘" />
</p>
</html>
classKan.jsp
<%@ page language="java" import="java.sql.*" pageEncoding="utf-8"%>
<html>
<head>
<title>课程信息</title>
</head>
<body>
<table border="1"style="text-align:center">
<caption>课程信息</caption>
<tr>
<td align="center" width=2%>课程编号</td>
<td align="center" width=3%>课程名称</td>
<td align="center" width=2%>任课老师</td>
<td align="center" width=2%>已选人数</td>
<td align="center" width=3%>人数上限</td>
</tr>
<jsp:useBean id="util" class="aD.Ac" scope="page" />
<%
String a=request.getParameter("id");
try{
Connection connect = util.sjk();
Statement stmt = connect.createStatement();
ResultSet rs = stmt.executeQuery("select * from classim");
while(rs.next()){
if(a.equals(rs.getObject(1).toString()))
{
%>
<tr>
<td width=2% align="center"><%=rs.getObject(1) %></td>
<td width=3% align="center"><%=rs.getObject(2) %></td>
<td width=2% align="center"><%=rs.getObject(4) %></td>
<td width=2% align="center"><%=rs.getObject(5) %></td>
<td width=3% align="center"><%=rs.getObject(3) %></td>
</tr>
<%
}
}
rs.close();
connect.close();
stmt.close();
}catch (SQLException e) {
e.printStackTrace();
}
%>
</table>
</body>
<p style="text-align:center;color:black;font-family:楷体; font-size:20px">
<br><br>
<input type="button" value="返回上一页" onclick="javascript:history.back(-1)" />
</p>
</html>
addstudentback.jsp
<%@ page contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>添加教师</title>
</head>
<body>
<jsp:useBean id="util" class="aD.Ac" scope="page" />
<%
String calss="学生";
String num=(String)request.getParameter("num");
String name=(String)request.getParameter("name");
String sex=(String)request.getParameter("sex");
String banji=(String)request.getParameter("banji");
String zhuanye=(String)request.getParameter("zhuanye");
if(util.query(num)){
out.print("<script language =‘javaScript‘> alert(‘输入不能为空‘);window.history.back(-1); </script>");
}else if(util.numCha(num)){
out.print("<script language =‘javaScript‘> alert(‘学号必须为8位，且必须是数字‘);window.history.back(-1); </script>");
}else if(util.queryTeacherxiu(name, sex, banji, zhuanye)){
out.print("<script language =‘javaScript‘> alert(‘输入不能为空‘);window.history.back(-1); </script>");
}else if(util.addStudentNum(num)){
out.print("<script language =‘javaScript‘> alert(‘学号重复‘);window.history.back(-1); </script>");
}else{
util.addStudent(calss, num, name, sex, banji, zhuanye);
out.print("<script language=‘javaScript‘> alert(‘添加成功‘);</script>");
response.setHeader("refresh", "0;url=contrul.jsp");
}
%>
</body>
</html>
NewTeacher.jsp
<%@ page language="java" import="java.sql.*" pageEncoding="utf-8"%>
<html>
<head>
<title>添加教师</title>
</head>
<form id="1" action ="NewTeacherback.jsp" method="get">
<p style="text-align:center;color:black;font-family:楷体; font-size:20px">
<br>
工号:
<input type="text" name="num"size="15"/>
<br><br>
姓名:
<input type="text" name="name"size="15"/>
<br><br>
性别:
<input type="text" name="sex"size="15"/>
<br><br>
学院:
<input type="text" name="yuan"size="15"/>
<br><br>
职称:
<select size ="1"name="zhichen">
<option value ="教授" selected>教授</option>
<option value ="副教授">副教授</option>
<option value ="讲师" >讲师</option>
<option value ="助教" >助教</option>
</select>
<br><br>
<br><br>
<input type="button" value="返回上一页" onclick="javascript:history.back(-1)" />
<br><br>
<input type="submit" value="确认"/>
<input type="reset" value="重置"/>
</p>
</form>
</html>
NewTeacherback.jsp
<%@ page contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>添加教师</title>
</head>
<body>
<jsp:useBean id="util" class="aD.Ac" scope="page" />
<%
String calss="教师";
String num=(String)request.getParameter("num");
String name=(String)request.getParameter("name");
String sex=(String)request.getParameter("sex");
String yuan=(String)request.getParameter("yuan");
String zhichen=(String)request.getParameter("zhichen");
if(util.query(num)){
out.print("<script language =‘javaScript‘> alert(‘输入不能为空‘);window.history.back(-1); </script>");
}else if(util.numCha(num)){
out.print("<script language =‘javaScript‘> alert(‘工号必须为8位，且必须是数字‘);window.history.back(-1); </script>");
}else if(util.queryTeacherxiu(name, sex, yuan, zhichen)){
out.print("<script language =‘javaScript‘> alert(‘输入不能为空‘);window.history.back(-1); </script>");
}else if(util.addTeacherNum(num)){
out.print("<script language =‘javaScript‘> alert(‘工号重复‘);window.history.back(-1); </script>");
}else{
util.addTeaher(calss, num, name, sex, yuan, zhichen);
out.print("<script language=‘javaScript‘> alert(‘添加成功‘);</script>");
response.setHeader("refresh", "0;url=contrul.jsp");
}
%>
</body>
</html>
student.jsp
<%@ page contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>学生系统</title>
</head>
<p style="text-align:center;color:black;font-family:宋体,serif; font-size:20px">
<a>学生系统</a>
<br>
<br><br>
<input type="button" value="修改个人信息" onclick="location.href=‘student-resive.jsp‘" />
<br><br>
<input type="button" value="浏览课程" onclick="location.href=‘Swatch-c.jsp‘" />
<br><br>
<input type="button" value="选课" onclick="location.href=‘xuanke.jsp‘" />
<br><br>
<input type="button" value="修改密码" onclick="location.href=‘sxiu.jsp‘" />
<br><br>
<input type="button" value="登出" onclick="location.href=‘main.jsp‘" />
</p>
</html>
student-resive.jsp
<%@ page language="java" import="java.sql.*" pageEncoding="utf-8"%>
<html>
<head>
<title>修改</title>
</head>
<body>
<table border="1"style="text-align:center">
<caption>学生信息</caption>
<tr>
<td align="center" width=3%>学号</td>
<td align="center" width=3%>姓名</td>
<td align="center" width=2%>性别</td>
<td align="center" width=2%>班级</td>
<td align="center" width=3%>专业</td>
</tr>
<jsp:useBean id="util" class="aD.Ac" scope="page" />
<%
String num=session.getAttribute("num").toString();
try{
Connection connect = util.sjk();
Statement stmt = connect.createStatement();
ResultSet rs = stmt.executeQuery("select * from student");
while(rs.next()){
if(num.equals(rs.getObject(2).toString()))
{
%>
<tr>
<td width=3% align="center"><%=rs.getObject(2) %></td>
<td width=3% align="center"><%=rs.getObject(3) %></td>
<td width=2% align="center"><%=rs.getObject(4) %></td>
<td width=2% align="center"><%=rs.getObject(5) %></td>
<td width=3% align="center"><%=rs.getObject(6) %></td>
</tr>
<%
}
}
rs.close();
connect.close();
stmt.close();
}catch (SQLException e) {
e.printStackTrace();
}
%>
</table>
</body>
<form id="1" action ="student-resiveback.jsp" method="get">
<p style="text-align:center;color:black;font-family:楷体; font-size:20px">
<br>
姓名:
<input type="text" name="name"size="15"/>
<br><br>
性别:
<input type="text" name="sex"size="15"/>
<br><br>
班级:
<input type="text" name="banji"size="15"/>
<br><br>
专业:
<input type="text" name="zhuanye"size="15"/>
<br><br>
<br><br>
<input type="button" value="返回上一页" onclick="javascript:history.back(-1)" />
<br><br>
<input type="submit" value="修改"/>
<input type="reset" value="重置"/>
</p>
</form>
</html>
student-resiveback.jsp
<%@ page contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>修改信息</title>
</head>
<body>
<jsp:useBean id="util" class="aD.Ac" scope="page" />
<%
String calss=session.getAttribute("calss").toString();
String num=session.getAttribute("num").toString();
String name=(String)request.getParameter("name");
String sex=(String)request.getParameter("sex");
String yuan=(String)request.getParameter("banji");
String zhichen=(String)request.getParameter("zhuanye");
String num1=num;
if(util.queryTeacherxiu(name, sex, yuan, zhichen)){
out.print("<script language =‘javaScript‘> alert(‘输入不能为空‘);window.history.back(-1); </script>");
}else{
util.studentXiugai(calss, num, name, sex, yuan, zhichen, num1);
out.print("<script language=‘javaScript‘> alert(‘修改成功‘);</script>");
response.setHeader("refresh", "0;url=student.jsp");
}
%>
</body>
</html>
Swatch-c.jsp
<%@ page language="java" import="java.sql.*" pageEncoding="utf-8"%>
<html>
<head>
<title>浏览</title>
</head>
<body>
<table border="1"style="text-align:center">
<caption>课程信息</caption>
<tr>
<td align="center" width=3%>课程编号</td>
<td align="center" width=3%>课程名字</td>
<td align="center" width=3%>教师</td>
</tr>
<jsp:useBean id="util" class="aD.Ac" scope="page" />
<%
try{
Connection connect = util.sjk();
Statement stmt = connect.createStatement();
ResultSet rs = stmt.executeQuery("select * from classim");
while(rs.next()){
%>
<tr>
<td width=3% align="center"><%=rs.getObject(1) %></td>
<td width=3% align="center"><a style="color:blue" href=‘classKan.jsp?id=<%=rs.getObject(1) %>‘><%=rs.getObject(2)%></a></td>
<td width=3% align="center"><a style="color:blue" href=‘teacherKan.jsp?id=<%=rs.getObject(6) %>‘><%=rs.getObject(4)%></a></td>
</tr>
<%
}
rs.close();
connect.close();
stmt.close();
}catch (SQLException e) {
e.printStackTrace();
}
%>
</table>
</body>
<p style="text-align:center;color:black;font-family:楷体; font-size:20px">
<br><br>
<input type="button" value="返回上一页" onclick="javascript:history.back(-1)" />
</p>
</html>
sxiu.jsp
<%@ page language="java" import="java.sql.*" pageEncoding="utf-8"%>
<html>
<head>
<title>修改</title>
</head>
<body>
<jsp:useBean id="util" class="aD.Ac" scope="page" />
<form id="1" action ="sxiuback.jsp" method="get">
<p style="text-align:center;color:black;font-family:楷体; font-size:20px">
<br>
输入旧密码:
<input type="text" name="jiu"size="15"/>
<br><br>
输入新密码:
<input type="text" name="xin"size="15"/>
<br><br>
<br><br>
<input type="button" value="返回上一页" onclick="javascript:history.back(-1)" />
<br><br>
<input type="submit" value="修改"/>
<input type="reset" value="重置"/>
</p>
</form>
</body>
</html>
sxiuback.jsp
<%@page import="aD.Ac"%>
<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>处理</title>
</head>
<body>
<jsp:useBean id="util" class="aD.Ac" scope="page" />
<%
String calss="学生";
String num=session.getAttribute("num").toString();
String pass=session.getAttribute("pass").toString();
String jiu=(String)request.getParameter("jiu");
String xin=(String)request.getParameter("xin");
if(util.queryEmpty(jiu, xin)){
out.print("<script language =‘javaScript‘> alert(‘输入不能为空‘);window.history.back(-1); </script>");
}else if(!pass.equals(jiu)){
out.print("<script language =‘javaScript‘> alert(‘旧密码错误‘);window.history.back(-1); </script>");
}else if(util.numCha(xin)){
out.print("<script language =‘javaScript‘> alert(‘新密码必须为8位，且必须是数字‘);window.history.back(-1); </script>");
}else{
util.XiuM(xin, num, calss);
out.print("<script language=‘javaScript‘> alert(‘修改成功‘);</script>");
response.setHeader("refresh", "0;url=student.jsp");
}
%>
</body>
</html>
teacher.jsp
<%@ page contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>教师系统</title>
</head>
<p style="text-align:center;color:black;font-family:宋体,serif; font-size:20px">
<a>教师系统</a>
<br>
<br><br>
<input type="button" value="添加课程" onclick="location.href=‘teacher-addclass.jsp‘" />
<br><br>
<input type="button" value="修改个人信息" onclick="location.href=‘teacher-revise.jsp‘" />
<br><br>
<input type="button" value="浏览选课学生信息" onclick="location.href=‘teacher-watch.jsp‘" />
<br><br>
<input type="button" value="修改密码" onclick="location.href=‘Txiu.jsp‘" />
<br><br>
<input type="button" value="登出" onclick="location.href=‘main.jsp‘" />
</p>
</html>
teacher-addback.jsp
<%@ page contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>添加课程</title>
</head>
<body>
<jsp:useBean id="util" class="aD.Ac" scope="page" />
<%
String num=session.getAttribute("num").toString();
String classnum=(String)request.getParameter("classnum");
String classname=(String)request.getParameter("classname");
String classmax=(String)request.getParameter("classmax");
String classteacher=session.getAttribute("name").toString();
String classnow="0";
if(util.queryTeacherAdd(classnum, classname,classmax)){
out.print("<script language =‘javaScript‘> alert(‘输入不能为空‘);window.history.back(-1); </script>");
}else if(util.classnumCha(classnum)){
out.print("<script language =‘javaScript‘> alert(‘课程编号应为6位数字‘);window.history.back(-1); </script>");
}else if(util.classnumchong(classnum)){
out.print("<script language =‘javaScript‘> alert(‘课程编号已存在‘);window.history.back(-1); </script>");
}else if(util.pin(classmax)){
out.print("<script language =‘javaScript‘> alert(‘人数上限应为正整数‘);window.history.back(-1); </script>");
}else if(util.classxichong(classname, classteacher)){
out.print("<script language =‘javaScript‘> alert(‘课程重复,与您已有课程重复‘);window.history.back(-1); </script>");
}else{
util.inputClassT(classnum, classname, classmax, classteacher, classnow,num);
out.print("<script language=‘javaScript‘> alert(‘添加成功‘);</script>");
response.setHeader("refresh", "0;url=teacher.jsp");
}
%>
</body>
</html>
teacher-addclass.jsp
<%@ page contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>添加课程</title>
</head>
<jsp:useBean id="util" class="aD.Ac" scope="page" />
<%
String calss=session.getAttribute("calss").toString();
String num=session.getAttribute("num").toString();
String name=util.namereturn(calss, num);
session.setAttribute("name", name);
%>
<form id="1" action ="teacher-addback.jsp" method="get">
<p style="text-align:center;color:black;font-family:楷体; font-size:20px">
<br>
课程编号:
<input type="text" name="classnum"size="15"/>
<br><br>
课程名称:
<input type="text" name="classname"size="15"/>
<br><br>
选课人数上限:
<input type="text" name="classmax"size="15"/>
<br><br>
任课教师:
<%
out.println(name);
%>
<br><br>
<input type="button" value="返回上一页" onclick="javascript:history.back(-1)" />
<br><br>
<input type="submit" value="添加"/>
<input type="reset" value="重置"/>
</p>
</form>
</html>
teacherKan.jsp
<%@ page language="java" import="java.sql.*" pageEncoding="utf-8"%>
<html>
<head>
<title>教师信息</title>
</head>
<body>
<table border="1"style="text-align:center">
<caption>教师信息</caption>
<tr>
<td align="center" width=2%>教师工号</td>
<td align="center" width=3%>教师姓名</td>
<td align="center" width=2%>教师性别</td>
<td align="center" width=3%>教师院系</td>
<td align="center" width=2%>教师职位</td>
</tr>
<jsp:useBean id="util" class="aD.Ac" scope="page" />
<%
String a=request.getParameter("id");
try{
Connection connect = util.sjk();
Statement stmt = connect.createStatement();
ResultSet rs = stmt.executeQuery("select * from teacher");
while(rs.next()){
if(a.equals(rs.getObject(2).toString()))
{
%>
<tr>
<td width=2% align="center"><%=rs.getObject(2) %></td>
<td width=3% align="center"><%=rs.getObject(3) %></td>
<td width=2% align="center"><%=rs.getObject(4) %></td>
<td width=3% align="center"><%=rs.getObject(5) %></td>
<td width=2% align="center"><%=rs.getObject(6) %></td>
</tr>
<%
}
}
rs.close();
connect.close();
stmt.close();
}catch (SQLException e) {
e.printStackTrace();
}
%>
</table>
</body>
<p style="text-align:center;color:black;font-family:楷体; font-size:20px">
<br><br>
<input type="button" value="返回上一页" onclick="javascript:history.back(-1)" />
</p>
</html>
teacher-revise.jsp
<%@ page language="java" import="java.sql.*" pageEncoding="utf-8"%>
<html>
<head>
<title>修改</title>
</head>
<body>
<table border="1"style="text-align:center">
<caption>教师信息</caption>
<tr>
<td align="center" width=3%>工号</td>
<td align="center" width=3%>姓名</td>
<td align="center" width=2%>性别</td>
<td align="center" width=2%>学院</td>
<td align="center" width=3%>职称</td>
</tr>
<jsp:useBean id="util" class="aD.Ac" scope="page" />
<%
String num=session.getAttribute("num").toString();
try{
Connection connect = util.sjk();
Statement stmt = connect.createStatement();
ResultSet rs = stmt.executeQuery("select * from teacher");
while(rs.next()){
if(num.equals(rs.getObject(2).toString()))
{
%>
<tr>
<td width=3% align="center"><%=rs.getObject(2) %></td>
<td width=3% align="center"><%=rs.getObject(3) %></td>
<td width=2% align="center"><%=rs.getObject(4) %></td>
<td width=2% align="center"><%=rs.getObject(5) %></td>
<td width=3% align="center"><%=rs.getObject(6) %></td>
</tr>
<%
}
}
rs.close();
connect.close();
stmt.close();
}catch (SQLException e) {
e.printStackTrace();
}
%>
</table>
</body>
<form id="1" action ="teacher-reviseback.jsp" method="get">
<p style="text-align:center;color:black;font-family:楷体; font-size:20px">
<br>
姓名:
<input type="text" name="name"size="15"/>
<br><br>
性别:
<input type="text" name="sex"size="15"/>
<br><br>
学院:
<input type="text" name="yuan"size="15"/>
<br><br>
职称:
<select size ="1"name="zhichen">
<option value ="教授" selected>教授</option>
<option value ="副教授">副教授</option>
<option value ="讲师" >讲师</option>
<option value ="助教" >助教</option>
</select>
<br><br>
<br><br>
<input type="button" value="返回上一页" onclick="javascript:history.back(-1)" />
<br><br>
<input type="submit" value="修改"/>
<input type="reset" value="重置"/>
</p>
</form>
</html>
teacher-reviseback.jsp
<%@ page contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>修改信息</title>
</head>
<body>
<jsp:useBean id="util" class="aD.Ac" scope="page" />
<%
String calss=session.getAttribute("calss").toString();
String num=session.getAttribute("num").toString();
String name=(String)request.getParameter("name");
String sex=(String)request.getParameter("sex");
String yuan=(String)request.getParameter("yuan");
String zhichen=(String)request.getParameter("zhichen");
String num1=num;
if(util.queryTeacherxiu(name, sex, yuan, zhichen)){
out.print("<script language =‘javaScript‘> alert(‘输入不能为空‘);window.history.back(-1); </script>");
}else{
util.teacherXiugai(calss, num, name, sex, yuan, zhichen, num1);
out.print("<script language=‘javaScript‘> alert(‘修改成功‘);</script>");
response.setHeader("refresh", "0;url=teacher.jsp");
}
%>
</body>
</html>
teacher-watch.jsp
<%@ page language="java" import="java.sql.*" pageEncoding="utf-8"%>
<html>
<head>
<title>修改</title>
</head>
<body>
<table border="1"style="text-align:center">
<caption>学生选课情况</caption>
<tr>
<td align="center" width=3%>课程编号</td>
<td align="center" width=3%>课程名称</td>
<td align="center" width=3%>学生学号</td>
<td align="center" width=2%>学生姓名</td>
<td align="center" width=2%>学生性别</td>
<td align="center" width=3%>班级</td>
<td align="center" width=3%>专业</td>
</tr>
<jsp:useBean id="util" class="aD.Ac" scope="page" />
<%
String num=session.getAttribute("num").toString();
try{
Connection connect = util.sjk();
Statement stmt = connect.createStatement();
ResultSet rs = stmt.executeQuery("select * from xuanke");
while(rs.next()){
if(num.equals(rs.getObject(2).toString()))
{
%>
<tr>
<td width=3% align="center"><%=rs.getObject(1) %></td>
<td width=3% align="center"><%=rs.getObject(3) %></td>
<td width=3% align="center"><%=rs.getObject(6) %></td>
<td width=2% align="center"><%=rs.getObject(7) %></td>
<td width=2% align="center"><%=rs.getObject(8) %></td>
<td width=3% align="center"><%=rs.getObject(9) %></td>
<td width=3% align="center"><%=rs.getObject(10) %></td>
</tr>
<%
}
}
rs.close();
connect.close();
stmt.close();
}catch (SQLException e) {
e.printStackTrace();
}
%>
</table>
<p style="text-align:center">
<br><br>
<input type="button" value="返回上一页" onclick="javascript:history.back(-1)" />
</p>
</body>
</html>
Txiu.jsp
<%@ page language="java" import="java.sql.*" pageEncoding="utf-8"%>
<html>
<head>
<title>修改</title>
</head>
<body>
<jsp:useBean id="util" class="aD.Ac" scope="page" />
<form id="1" action ="Txiuback.jsp" method="get">
<p style="text-align:center;color:black;font-family:楷体; font-size:20px">
<br>
输入旧密码:
<input type="text" name="jiu"size="15"/>
<br><br>
输入新密码:
<input type="text" name="xin"size="15"/>
<br><br>
<br><br>
<input type="button" value="返回上一页" onclick="javascript:history.back(-1)" />
<br><br>
<input type="submit" value="修改"/>
<input type="reset" value="重置"/>
</p>
</form>
</body>
</html>
Txiuback.jsp
<%@page import="aD.Ac"%>
<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>处理</title>
</head>
<body>
<jsp:useBean id="util" class="aD.Ac" scope="page" />
<%
String calss="教师";
String num=session.getAttribute("num").toString();
String pass=session.getAttribute("pass").toString();
String jiu=(String)request.getParameter("jiu");
String xin=(String)request.getParameter("xin");
if(util.queryEmpty(jiu, xin)){
out.print("<script language =‘javaScript‘> alert(‘输入不能为空‘);window.history.back(-1); </script>");
}else if(!pass.equals(jiu)){
out.print("<script language =‘javaScript‘> alert(‘旧密码错误‘);window.history.back(-1); </script>");
}else if(util.numCha(xin)){
out.print("<script language =‘javaScript‘> alert(‘新密码必须为8位，且必须是数字‘);window.history.back(-1); </script>");
}else{
util.XiuM(xin, num,calss);
out.print("<script language=‘javaScript‘> alert(‘修改成功‘);</script>");
response.setHeader("refresh", "0;url=teacher.jsp");
}
%>
</body>
</html>
xuanke.jsp
<%@ page language="java" import="java.sql.*" pageEncoding="utf-8"%>
<html>
<head>
<title>浏览</title>
</head>
<body>
<table border="1"style="text-align:center">
<caption>课程信息</caption>
<tr>
<td align="center" width=3%>课程编号</td>
<td align="center" width=3%>课程名字</td>
<td align="center" width=3%>课程详细信息</td>
<td align="center" width=3%>教师</td>
</tr>
<jsp:useBean id="util" class="aD.Ac" scope="page" />
<%
try{
Connection connect = util.sjk();
Statement stmt = connect.createStatement();
ResultSet rs = stmt.executeQuery("select * from classim");
while(rs.next()){
String a=rs.getObject(3).toString();
String b=rs.getObject(5).toString();
if(!a.equals(b))
{
%>
<tr>
<td width=3% align="center"><%=rs.getObject(1) %></td>
<td width=3% align="center"><%=rs.getObject(2) %></td>
<td width=3% align="center"><a style="color:blue" href=‘xuanke-back.jsp?id=<%=rs.getObject(1) %>‘>课程详细信息</a></td>
<td width=3% align="center"><%=rs.getObject(4) %></td>
</tr>
<%
}
}
rs.close();
connect.close();
stmt.close();
}catch (SQLException e) {
e.printStackTrace();
}
%>
</table>
</body>
<p style="text-align:center;color:black;font-family:楷体; font-size:20px">
<br><br>
<input type="button" value="返回上一页" onclick="javascript:history.back(-1)" />
</p>
</html>
xuanke-back.jsp
<%@ page language="java" import="java.sql.*" pageEncoding="utf-8"%>
<html>
<head>
<title>选课</title>
</head>
<body>
<table border="1"style="text-align:center">
<caption>课程信息</caption>
<tr>
<td align="center" width=2%>课程编号</td>
<td align="center" width=3%>课程名称</td>
<td align="center" width=2%>任课老师</td>
<td align="center" width=2%>已选人数</td>
<td align="center" width=3%>人数上限</td>
<td align="center" width=3%>选课</td>
</tr>
<jsp:useBean id="util" class="aD.Ac" scope="page" />
<%
String a=request.getParameter("id");
try{
Connection connect = util.sjk();
Statement stmt = connect.createStatement();
ResultSet rs = stmt.executeQuery("select * from classim");
while(rs.next()){
if(a.equals(rs.getObject(1).toString()))
{
String classteachernum=rs.getObject(6).toString();
session.setAttribute("classteachernum", classteachernum);
String classname=rs.getObject(2).toString();
session.setAttribute("classname", classname);
String classmax=rs.getObject(3).toString();
session.setAttribute("classmax", classmax);
String classteacher=rs.getObject(4).toString();
session.setAttribute("classteacher", classteacher);
String classnow=rs.getObject(5).toString();
session.setAttribute("classnow", classnow);
%>
<tr>
<td width=2% align="center"><%=rs.getObject(1) %></td>
<td width=3% align="center"><%=rs.getObject(2) %></td>
<td width=2% align="center"><%=rs.getObject(4) %></td>
<td width=2% align="center"><%=rs.getObject(5) %></td>
<td width=3% align="center"><%=rs.getObject(3) %></td>
<td width=3% align="center"><a style="color:blue" href=‘xuanke-backback.jsp?classnum=<%=rs.getObject(1) %>‘>选课</a></td>
</tr>
<%
}
}
rs.close();
connect.close();
stmt.close();
}catch (SQLException e) {
e.printStackTrace();
}
%>
</table>
</body>
<p style="text-align:center;color:black;font-family:楷体; font-size:20px">
<br><br>
<input type="button" value="返回上一页" onclick="javascript:history.back(-1)" />
</p>
</html>
xuanke-backback.jsp
<%@ page language="java" import="java.sql.*" pageEncoding="utf-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>选课</title>
</head>
<body>
<jsp:useBean id="util" class="aD.Ac" scope="page" />
<%
String ak=session.getAttribute("num").toString();
String classnum=request.getParameter("classnum");
String classteachernum=session.getAttribute("classteachernum").toString();
String classname=session.getAttribute("classname").toString();
String classmax=session.getAttribute("classmax").toString();
String classteacher=session.getAttribute("classteacher").toString();
String classnow=session.getAttribute("classnow").toString();
String studentnum=null;
String name=null;
String sex=null;
String banji=null;
String zhuanye=null;
try{
Connection connect = util.sjk();
Statement stmt = connect.createStatement();
ResultSet rs = stmt.executeQuery("select * from student");
while(rs.next()){
if(ak.equals(rs.getObject(2).toString()))
{
studentnum=rs.getObject(2).toString();
name=rs.getObject(3).toString();
sex=rs.getObject(4).toString();
banji=rs.getObject(5).toString();
zhuanye=rs.getObject(6).toString();
}
}
rs.close();
connect.close();
stmt.close();
}catch (SQLException e) {
e.printStackTrace();
}
if(util.xuanchong(studentnum, classnum))
{
out.print("<script language =‘javaScript‘> alert(‘你已经选过改课程‘);window.history.back(-1); </script>");
}else{
util.Xiugai(classnum, classnow);
util.SinputClassT(classnum, classteachernum, classname, classmax, classteacher, studentnum, name, sex, banji, zhuanye);
out.print("<script language=‘javaScript‘> alert(‘选课成功‘);</script>");
response.setHeader("refresh", "0;url=student.jsp");
}
%>
</body>
</html>
package aD;
import java.sql.*;
public class Ac {
public Connection sjk()
{
Connection connect;
try {
connect = DriverManager.getConnection("jdbc:mysql://localhost:3306/test?&useSSL=false&serverTimezone=UTC","root","123456");
return connect;
}catch(Exception e)
{
e.printStackTrace();
}
return null;
}
public boolean inquiryNumber(String num,String calss)
{
boolean flag=true;
try {
Connection connect = DriverManager.getConnection("jdbc:mysql://localhost:3306/test?&useSSL=false&serverTimezone=UTC","root","123456");
Statement stmt = connect.createStatement();
ResultSet rs = stmt.executeQuery("select * from denglv");
while(rs.next())
{
if(num.equals(rs.getString("num"))&&calss.equals(rs.getString("calss")))
{
flag=false;
}
}
rs.close();
stmt.close();
connect.close();
}catch (SQLException e) {
e.printStackTrace();
}
return flag;
}
public boolean pin(String max)
{
boolean flag=true;
try {
double a=Integer.valueOf(max);
if(a>0&&a%1==0) flag=false;
return flag;
} catch (Exception e) {
return flag;
}
}
public boolean denlv(String calss,String num,String pass)
{
boolean flag=true;
try {
Connection connect = DriverManager.getConnection("jdbc:mysql://localhost:3306/test?&useSSL=false&serverTimezone=UTC","root","123456");
Statement stmt = connect.createStatement();
ResultSet rs = stmt.executeQuery("select * from denglv");
while(rs.next())
{
if(num.equals(rs.getString("num"))&&calss.equals(rs.getString("calss"))&&pass.equals(rs.getString("pass")))
{
flag=false;
}
}
rs.close();
stmt.close();
connect.close();
}catch (SQLException e) {
e.printStackTrace();
}
return flag;
}
public String namereturn(String calss,String num)
{
String name=null;
try {
Connection connect = DriverManager.getConnection("jdbc:mysql://localhost:3306/test?&useSSL=false&serverTimezone=UTC","root","123456");
Statement stmt = connect.createStatement();
ResultSet rs = stmt.executeQuery("select * from teacher");
while(rs.next())
{
if(num.equals(rs.getString("num"))&&calss.equals(rs.getString("calss")))
{
name=rs.getString("name");
}
}
rs.close();
stmt.close();
connect.close();
}catch (SQLException e) {
e.printStackTrace();
}
return name;
}
public boolean classxichong(String classname,String classteacher)
{
boolean flag=false;
try {
Connection connect = DriverManager.getConnection("jdbc:mysql://localhost:3306/test?&useSSL=false&serverTimezone=UTC","root","123456");
Statement stmt = connect.createStatement();
ResultSet rs = stmt.executeQuery("select * from classim");
while(rs.next())
{
if(classname.equals(rs.getString("classname"))&&classteacher.equals(rs.getString("classteacher")))
{
flag=true;
}
}
rs.close();
stmt.close();
connect.close();
}catch (SQLException e) {
e.printStackTrace();
}
return flag;
}
public boolean classnumchong(String classnumber)
{
boolean flag=false;
try {
Connection connect = DriverManager.getConnection("jdbc:mysql://localhost:3306/test?&useSSL=false&serverTimezone=UTC","root","123456");
Statement stmt = connect.createStatement();
ResultSet rs = stmt.executeQuery("select * from classim");
while(rs.next())
{
if(classnumber.equals(rs.getString("classnum")))
{
flag=true;
}
}
rs.close();
stmt.close();
connect.close();
}catch (SQLException e) {
e.printStackTrace();
}
return flag;
}
public boolean addTeacherNum(String num)
{
boolean flag=false;
try {
Connection connect = DriverManager.getConnection("jdbc:mysql://localhost:3306/test?&useSSL=false&serverTimezone=UTC","root","123456");
Statement stmt = connect.createStatement();
ResultSet rs = stmt.executeQuery("select * from teacher");
while(rs.next())
{
if(num.equals(rs.getString("num")))
{
flag=true;
}
}
rs.close();
stmt.close();
connect.close();
}catch (SQLException e) {
e.printStackTrace();
}
return flag;
}
public boolean addStudentNum(String num)
{
boolean flag=false;
try {
Connection connect = DriverManager.getConnection("jdbc:mysql://localhost:3306/test?&useSSL=false&serverTimezone=UTC","root","123456");
Statement stmt = connect.createStatement();
ResultSet rs = stmt.executeQuery("select * from student");
while(rs.next())
{
if(num.equals(rs.getString("num")))
{
flag=true;
}
}
rs.close();
stmt.close();
connect.close();
}catch (SQLException e) {
e.printStackTrace();
}
return flag;
}
public boolean classnumCha(String num)
{
boolean flag=true;
if(num.length()==6)
{
for(int i=0;i<num.length();i++)
{
char k=num.charAt(i);
if(k==‘0‘||k==‘1‘||k==‘2‘||k==‘3‘||k==‘4‘||k==‘5‘||k==‘6‘||k==‘7‘||k==‘8‘||k==‘9‘) continue;
else return flag;
}
flag=false;
}
return flag;
}
public boolean numCha(String num)
{
boolean flag=true;
if(num.length()==8)
{
for(int i=0;i<num.length();i++)
{
char k=num.charAt(i);
if(k==‘0‘||k==‘1‘||k==‘2‘||k==‘3‘||k==‘4‘||k==‘5‘||k==‘6‘||k==‘7‘||k==‘8‘||k==‘9‘) continue;
else return flag;
}
flag=false;
}
return flag;
}
public boolean query(String num)//查空
{
boolean flag=false;
if(num==null||"".equals((num)))
{
flag=true;
}
return flag;
}
public boolean queryEmpty(String number,String password)//查空
{
boolean flag=false;
if(number==null||"".equals((number))&&password==null||"".equals(password))
{
flag=true;
}
return flag;
}
public boolean queryTeacherAdd(String classnumber, String classname,String classmax)//查空
{
boolean flag=false;
if(classnumber==null||"".equals((classnumber))&&classname==null||"".equals(classname)&&classmax==null||"".equals(classmax))
{
flag=true;
}
return flag;
}
public boolean queryTeacherxiu(String name,String sex,String yuan,String zhichen)//查空
{
boolean flag=false;
if(name==null||"".equals((name))&&sex==null||"".equals(sex)&&yuan==null||"".equals(yuan)&&zhichen==null||"".equals(zhichen))
{
flag=true;
}
return flag;
}
public void teacherXiugai(String calss,String num,String name,String sex,String yuan,String zhichen,String num1)
{
try {
PreparedStatement preparedStatement=null;
Connection connect = DriverManager.getConnection("jdbc:mysql://localhost:3306/test?&useSSL=false&serverTimezone=UTC","root","123456");
preparedStatement=connect.prepareStatement("Update teacher set calss=?,num=?,name=?,sex=?,yuan=?,zhichen=? where num=?");
preparedStatement.setString(1,calss);
preparedStatement.setString(2,num);
preparedStatement.setString(3,name);
preparedStatement.setString(4,sex);
preparedStatement.setString(5,yuan);
preparedStatement.setString(6,zhichen);
preparedStatement.setString(7,num1);
preparedStatement.executeUpdate();
preparedStatement.execute();
connect.close();
}catch(SQLException e){
e.printStackTrace();
}
}
public void Xiugai(String classnum,String classnow)
{
try {
int a=Integer.valueOf(classnow);
a++;
String ac=String.valueOf(a);
PreparedStatement preparedStatement=null;
Connection connect = DriverManager.getConnection("jdbc:mysql://localhost:3306/test?&useSSL=false&serverTimezone=UTC","root","123456");
preparedStatement=connect.prepareStatement("Update classim set classnow=?where classnum=?");
preparedStatement.setString(1,ac);
preparedStatement.setString(2,classnum);
preparedStatement.executeUpdate();
preparedStatement.execute();
connect.close();
}catch(SQLException e){
e.printStackTrace();
}
}
public void studentXiugai(String calss,String num,String name,String sex,String yuan,String zhichen,String num1)
{
try {
PreparedStatement preparedStatement=null;
Connection connect = DriverManager.getConnection("jdbc:mysql://localhost:3306/test?&useSSL=false&serverTimezone=UTC","root","123456");
preparedStatement=connect.prepareStatement("Update student set calss=?,num=?,name=?,sex=?,banji=?,zhuanye=? where num=?");
preparedStatement.setString(1,calss);
preparedStatement.setString(2,num);
preparedStatement.setString(3,name);
preparedStatement.setString(4,sex);
preparedStatement.setString(5,yuan);
preparedStatement.setString(6,zhichen);
preparedStatement.setString(7,num1);
preparedStatement.executeUpdate();
preparedStatement.execute();
connect.close();
}catch(SQLException e){
e.printStackTrace();
}
}
public void XiuM(String pass,String num,String calss)
{
try {
PreparedStatement preparedStatement=null;
Connection connect = DriverManager.getConnection("jdbc:mysql://localhost:3306/test?&useSSL=false&serverTimezone=UTC","root","123456");
preparedStatement=connect.prepareStatement("Update denglv set pass=? where num=? and calss=? ");
preparedStatement.setString(1,pass);
preparedStatement.setString(2,num);
preparedStatement.setString(3,calss);
preparedStatement.executeUpdate();
preparedStatement.execute();
connect.close();
}catch(SQLException e){
e.printStackTrace();
}
}
public void addTeaher(String calss,String num,String name,String sex,String yuan,String zhichen)
{
try {
PreparedStatement preparedStatement=null;
Connection connect = DriverManager.getConnection("jdbc:mysql://localhost:3306/test?&useSSL=false&serverTimezone=UTC","root","123456");
preparedStatement=connect.prepareStatement("insert into teacher (calss,num,name,sex,yuan,zhichen) values (?,?,?,?,?,?)");
preparedStatement.setString(1,calss);
preparedStatement.setString(2,num);
preparedStatement.setString(3,name);
preparedStatement.setString(4,sex);
preparedStatement.setString(5,yuan);
preparedStatement.setString(6,zhichen);
preparedStatement.executeUpdate();
connect.close();
preparedStatement.close();
}catch(SQLException e){
e.printStackTrace();
}
try {
PreparedStatement preparedStatement=null;
Connection connect = DriverManager.getConnection("jdbc:mysql://localhost:3306/test?&useSSL=false&serverTimezone=UTC","root","123456");
preparedStatement=connect.prepareStatement("insert into denglv (calss,num,pass) values (?,?,?)");
preparedStatement.setString(1,calss);
preparedStatement.setString(2,num);
preparedStatement.setString(3,num);
preparedStatement.executeUpdate();
connect.close();
preparedStatement.close();
}catch(SQLException e){
e.printStackTrace();
}
}
public void addStudent(String calss,String num,String name,String sex,String banji,String zhuanye)
{
try {
PreparedStatement preparedStatement=null;
Connection connect = DriverManager.getConnection("jdbc:mysql://localhost:3306/test?&useSSL=false&serverTimezone=UTC","root","123456");
preparedStatement=connect.prepareStatement("insert into student (calss,num,name,sex,banji,zhuanye) values (?,?,?,?,?,?)");
preparedStatement.setString(1,calss);
preparedStatement.setString(2,num);
preparedStatement.setString(3,name);
preparedStatement.setString(4,sex);
preparedStatement.setString(5,banji);
preparedStatement.setString(6,zhuanye);
preparedStatement.executeUpdate();
connect.close();
preparedStatement.close();
}catch(SQLException e){
e.printStackTrace();
}
try {
PreparedStatement preparedStatement=null;
Connection connect = DriverManager.getConnection("jdbc:mysql://localhost:3306/test?&useSSL=false&serverTimezone=UTC","root","123456");
preparedStatement=connect.prepareStatement("insert into denglv (calss,num,pass) values (?,?,?)");
preparedStatement.setString(1,calss);
preparedStatement.setString(2,num);
preparedStatement.setString(3,num);
preparedStatement.executeUpdate();
connect.close();
preparedStatement.close();
}catch(SQLException e){
e.printStackTrace();
}
}
public void inputClassT(String classnum,String classname,String classmax,String classteacher,String classnow,String teachernum)
{
try {
PreparedStatement preparedStatement=null;
Connection connect = DriverManager.getConnection("jdbc:mysql://localhost:3306/test?&useSSL=false&serverTimezone=UTC","root","123456");
preparedStatement=connect.prepareStatement("insert into classim (classnum,classname,classmax,classteacher,classnow,teachernum) values (?,?,?,?,?,?)");
preparedStatement.setString(1,classnum);
preparedStatement.setString(2,classname);
preparedStatement.setString(3,classmax);
preparedStatement.setString(4,classteacher);
preparedStatement.setString(5,classnow);
preparedStatement.setString(6,teachernum);
preparedStatement.executeUpdate();
connect.close();
preparedStatement.close();
}catch(SQLException e){
e.printStackTrace();
}
}
public void SinputClassT(String classnum,String classteachernum,String classname,String classmax,String classteacher,String studentnum,String name,String sex,String banji,String zhuanye)
{
try {
PreparedStatement preparedStatement=null;
Connection connect = DriverManager.getConnection("jdbc:mysql://localhost:3306/test?&useSSL=false&serverTimezone=UTC","root","123456");
preparedStatement=connect.prepareStatement("insert into xuanke (classnum,classteachernum,classname,classmax,classteacher,stuentnum,name,sex,banji,zhuanye) values (?,?,?,?,?,?,?,?,?,?)");
preparedStatement.setString(1,classnum);
preparedStatement.setString(2,classteachernum);
preparedStatement.setString(3,classname);
preparedStatement.setString(4,classmax);
preparedStatement.setString(5,classteacher);
preparedStatement.setString(6,studentnum);
preparedStatement.setString(7,name);
preparedStatement.setString(8,sex);
preparedStatement.setString(9,banji);
preparedStatement.setString(10,zhuanye);
preparedStatement.executeUpdate();
connect.close();
preparedStatement.close();
}catch(SQLException e){
e.printStackTrace();
}
}
public boolean xuanchong(String studentnum,String classnum)
{
boolean flag=false;
try {
Connection connect = DriverManager.getConnection("jdbc:mysql://localhost:3306/test?&useSSL=false&serverTimezone=UTC","root","123456");
Statement stmt = connect.createStatement();
ResultSet rs = stmt.executeQuery("select * from xuanke");
while(rs.next())
{
if(studentnum.equals(rs.getString("stuentnum"))&&classnum.equals(rs.getString("classnum")))
{
flag=true;
}
}
rs.close();
stmt.close();
connect.close();
}catch (SQLException e) {
e.printStackTrace();
}
return flag;
}
public static void main(String[] args) {
Ac a=new Ac();
}
}
原文：https://www.cnblogs.com/da48/p/14100497.html