石家庄铁道大学学生选课管理系统（50分）
1、项目需求：
石家庄铁道大学为了提高教务处的工作效率，方便用户之间信息的交流，简化学生选课的流程，使选课管理工作更规范化，系统化，程序化，提高信息处理的速度和准确性，能够及时、准确、有效的查询和修改选课排课相关信息。在学校内部的现有局域网这个网络环境下,信息由各用户在规定的权限下在各自的工作站上录入，信息上网后各用户可查询，选课，修改，管理，实现信息共享。
2.系统要求与功能设计
2.1 页面要求
（1）系统可以通过浏览器直接访问；（1分）
（2）各个功能页面整体风格统一；（2分）
（3）首页为用户登录页面，管理员、教师、学生三种角色用户登录后，进入相应的功能页，只能看到角色允许访问功能模块；（3分）
图1 学生选课系统功能结构图
（5）学生功能页：共包括查看个人信息、修改个人基本信息、修改个人密码、查询课程信息、自助选课、查询个人课表六项功能模块。
（6）教师功能页：包括查看教师个人信息、修改个人基本信息、修改个人密码、修改个人所教授课程部分信息，查询个人课表五项功能模块；
（7）管理员功能页：新添学生基本信息、修改学生基本信息、删除学生基本信息、新添教师基本信息，修改教师基本信息、删除教师基本信息、新添课程基本信息、修改教师基本信息、删除基本信息，密码重置十项功能模块。
2.2 功能要求
（1）新添学生基本信息：新添一名新学生基本个人信息，学生基本信息包括；学号（数据库中学号保持唯一、由系统自动生成、生成规则：学号由八位数字组成、开头以“2019XXXX”XXXX为四位依次递增的数字序号例如：“20190001、20190002……”）、姓名、性别（限定为“男”或“女”两个选项）、年龄、专业（要求限定在“计算机科学与技术”、“软件工程”、“网络工程”、“数字媒体技术”四个选项）、班级六项基本信息。（5分）
（2）修改学生基本信息（等同于学生功能页中修改个人信息）：学号不允许修改，姓名、性别、年龄、专业、班级可以按照要求进行修改，不符合录入格式的，提交时不允许修改，并提示错误信息类型，返回修改界面。（2分）
（3）删除学生基本信息：管理员可以从系统中删除学生基本信息。（1分）
（4）新添教师基本信息：新增一名教师基本信息，教师基本信息包括：教师工号（唯一，六位数字组成，前两位表示学院代码“01表示信息、02表示土木、03表示机械、04、表示电气、05表示交通”，后四位为依次递增的数字序号，提交时应验证工号的正确性，如有误，则提示错误，反馈界面，不允许提交保存）、姓名、职称（职称限定在“助教”、“讲师”、“副教授”、“教授”四个选项）、所属学院（取值限定在“信息、土木、机械、电气、交通”五个选项，并与教师工号前两位形成校验关系）；（5分）
（5）修改教师基本信息（等同于教师功能页中修改个人信息）：可以修改教师工号，姓名、职称、所属学院，教师工号前两位与所属学院关联，修改任何一项，必须关联修改另外一项，修改提交时须验证是否符合录入格式的，不符合不允许修改，提示错误信息类型，返回修改界面。（2分）
（6）删除教师基本信息：管理员可以从系统中删除教师基本信息，但是如果教师已经承担相应课程，系统不允许删除。（1分）
（7）新添课程基本信息：管理员可以增加一门课程基本信息，课程基本信息包括：课程编号（唯一，六位数字序号，系统自动生成依次递增），课程名称、开课时间（取值限定在“星期一、星期二、星期三、星期四、星期五”），开课节次（取值限定在“1-2节、3-4节、5-6节、7-8节、9-10节”）所属学院（取值限定在“信息、土木、机械、电气、交通”五个选项），任课教师工号，任课教师名称，选课限制人数。（5分）
（8）修改课程基本信息：可以修改课程开课时间、开课节次、所属学院（取值限定在“信息、土木、机械、电气、交通”五个选项），任课教师工号，任课教师名称，选课限制人数六项基本信息，课程编号、课程名称不允许修改。（2分）
（9）删除课程基本信息：管理员可以删除课程基本信息，但如果该课程有学生已经选课，提示错误信息“该课程已经被选，不允许删除”，不允许删除该课程基本信息。（1分）
（10） 自助选课管理：学生登录后可以浏览相关的课程信息列表，并查看课程的详细信息，点击“选课”按钮操作，系统判断该课程是否已超过选课人数，如果超过选课人数限制提示“该课程已经超过选课人数限制，选课失败”，回到选课界面，如果成功，提示“选课成功”。（5分）
（11）查询课表：教师或学生登录系统后均可查询个人课表，学生按照选课结果显示开课时间、开课节次、课程名称，教师按照承担课程显示开课时间、开课节次、课程名称，选课人数；（3分）
（12）修改个人所教授课程部分信息：教师登录后，可以修改个人承担课程的选课人数一项基本信息，其余信息不允许修改；（2分）
（13）个人密码修改：教师或学生用户登录后，可以输入旧密码、新密码、新密码确认修改个人密码，需要判断旧密码是否正确，新密码和新密码确认是否一致；（2分）
（14）重置密码：管理员可以修改教师或学生的个人密码，先按照教师工号或学生学号查询，显示出基本信息后，点击密码重置，将教师或个人密码统一修改为“123456”。（2分）
（15）数据库评分标准：按照题目要求创建教师基本信息表、学生基本信息表、课程基本信息表，选课结果表（4分），实现数据库连接正常（2分）。
一、Dao层 （部分）
public class Dao {
//学生添加
public int Sadd(Student student) throws Exception {
Connection connection = jdbcUtil.getconnection();
String sql = "insert into student(SName,SSex,SAge,SZhuan,SClass) value(?,?,?,?,?)";
PreparedStatement pstmt = null;
pstmt =connection.prepareStatement(sql);
pstmt.setString(1, student.getSName());
pstmt.setString(2, student.getSSex());
pstmt.setString(3, student.getSAge());
pstmt.setString(4, student.getSZhuan());
pstmt.setString(5, student.getSClass());
int count = pstmt.executeUpdate();
jdbcUtil.close(connection);
jdbcUtil.close(pstmt);
return count;
}
//学生登陆判断
public boolean SDengLu(String name1, String password) throws Exception {
Connection connection = jdbcUtil.getconnection();
PreparedStatement pstmt = null;
String sql = "select * from student where SName=? ";
pstmt = connection.prepareStatement(sql);
pstmt.setString(1, name1);
ResultSet rs = pstmt.executeQuery();
if (rs.next()) {
if (name1.equals(rs.getString("SName")) && password.equals(rs.getString("password")) ) {
jdbcUtil.close(connection);
jdbcUtil.close(pstmt);
jdbcUtil.close(rs);
return true;
}
}
jdbcUtil.close(connection);
jdbcUtil.close(pstmt);
jdbcUtil.close(rs);
return false;
}
//学生登陆
public Student SDeng_Lu(String name) throws Exception {
Connection connection = jdbcUtil.getconnection();
PreparedStatement pstmt = null;
String sql = "select * from student where SName=? ";
pstmt = connection.prepareStatement(sql);
pstmt.setString(1, name);
ResultSet rs = pstmt.executeQuery();
Student student = null;
while (rs.next()) {
int ID = Integer.parseInt(rs.getString("StudentID"));
String SName = rs.getString("SName");
String SSex = rs.getString("SSex");
String SAge = rs.getString("SAge");
String SZhuan = rs.getString("SZhuan");
String SClass = rs.getString("SClass");
student = new Student(ID,SName,SSex,SAge,SZhuan,SClass);
}
jdbcUtil.close(connection);
jdbcUtil.close(pstmt);
rs.close();
return student;
}
//学生修改密码
public int SUpP(String JID,String XID, String name) throws Exception {
Connection connection = jdbcUtil.getconnection();
PreparedStatement pstmt = null;
String sql = "select * from student where SName=? ";
pstmt = connection.prepareStatement(sql);
pstmt.setString(1, name);
ResultSet rs = pstmt.executeQuery();
if (rs.next()) {
if ( JID.equals(rs.getString("password")) )
{
PreparedStatement pstmt1 = null;
String sql1 = "update student\n" +
"set password = ?\n" +
"where SName = ?";
pstmt1 = connection.prepareStatement(sql1);
pstmt1.setString(1, XID);
pstmt1.setString(2, name);
int count = pstmt1.executeUpdate();
jdbcUtil.close(connection);
jdbcUtil.close(pstmt);
jdbcUtil.close(pstmt1);
jdbcUtil.close(rs);
return count;
}
}
jdbcUtil.close(connection);
jdbcUtil.close(pstmt);
jdbcUtil.close(rs);
return 0;
}
//学生删除
public int Sdel(int id) throws Exception {
Connection connection = jdbcUtil.getconnection();
String sql = "delete from student where StudentID = ?";
PreparedStatement pstmt = null;
pstmt = connection.prepareStatement(sql);
pstmt.setInt(1, id);
int count = pstmt.executeUpdate();
jdbcUtil.close(connection);
jdbcUtil.close(pstmt);
return count;
}
//学生修改
public int Supdate(Student student) throws Exception {
Connection connection = jdbcUtil.getconnection();
String sql = "update student\n" +
"set SName = ?,\n" +
"SSex = ?,\n" +
"SAge = ?,\n" +
"SZhuan = ?,\n" +
"SClass = ?\n" +
"where StudentID = ?";
PreparedStatement pstmt = null;
pstmt = connection.prepareStatement(sql);
pstmt.setString(1, student.getSName());
pstmt.setString(2, student.getSSex());
pstmt.setString(3, student.getSAge());
pstmt.setString(4, student.getSZhuan());
pstmt.setString(5, student.getSClass());
pstmt.setInt(6, student.getStudentID());
int count = pstmt.executeUpdate();
jdbcUtil.close(connection);
jdbcUtil.close(pstmt);
return count;
}
//学生个人信息
public Student Sget_by_id(int id) throws Exception {
Connection connection = jdbcUtil.getconnection();
String sql = "select * from student where StudentID= ?";
PreparedStatement pstmt = null;
pstmt = connection.prepareStatement(sql);
Student student= null;
pstmt.setInt(1,id);
ResultSet rs = pstmt.executeQuery();
while (rs.next()) {
int ID = Integer.parseInt(rs.getString("StudentID"));
String SName = rs.getString("SName");
String SSex = rs.getString("SSex");
String SAge = rs.getString("SAge");
String SZhuan = rs.getString("SZhuan");
String SClass = rs.getString("SClass");
student = new Student(ID,SName,SSex,SAge,SZhuan,SClass);
}
jdbcUtil.close(connection);
jdbcUtil.close(pstmt);
rs.close();
return student;
}
//自助选课管理
//学生浏览
public List<KeCheng> selectall() throws Exception {
Connection connection = jdbcUtil.getconnection();
String sql = "select * from kecheng";
PreparedStatement pstmt = null;
pstmt = connection.prepareStatement(sql);
ResultSet rs = pstmt.executeQuery();
KeCheng keCheng = null;
List<KeCheng> list = new ArrayList<>();
while (rs.next()) {
int id = Integer.parseInt(rs.getString("KeChengID"));
String KName = rs.getString("KName");
String KTime = rs.getString("KTime");
String KJie = rs.getString("KJie");
String KYuan = rs.getString("KYuan");
int KTid = Integer.parseInt(rs.getString("KTid"));
String KTName = rs.getString("KTName");
int KNum = Integer.parseInt(rs.getString("KNum"));
int KxNum = Integer.parseInt(rs.getString("KxNum"));
keCheng = new KeCheng(id, KName,KTime,KJie, KYuan, KTid, KTName,KxNum);
list.add(keCheng);
}
jdbcUtil.close(connection);
jdbcUtil.close(pstmt);
rs.close();
return list;
}
//判断选课人数
public boolean Kpan(int KID,int SID) throws Exception {
Connection connection = jdbcUtil.getconnection();
PreparedStatement pstmt = null;
String sql = "select * from kecheng where KeChengID = ?";
pstmt = connection.prepareStatement(sql);
pstmt.setInt(1,KID);
ResultSet rs = pstmt.executeQuery();
boolean f = false;
while (rs.next()) {
int KxNum= Integer.parseInt(rs.getString("KxNum"));
int KNum = Integer.parseInt(rs.getString("KNum"));
if( KxNum >= KNum)
{
jdbcUtil.close(connection);
jdbcUtil.close(pstmt);
rs.close();
return f;
}
else
{
int count = KXuan( KID , ++KxNum , SID);
if( count > 0 )
{
jdbcUtil.close(connection);
jdbcUtil.close(pstmt);
rs.close();
return true;
}
}
}
jdbcUtil.close(connection);
jdbcUtil.close(pstmt);
rs.close();
return f;
}
//选课
public int KXuan(int kid , int num ,int SID) throws Exception {
Connection connection = jdbcUtil.getconnection();
String sql = "update kecheng\n" +
"set KxNum = ?\n" +
"where KeChengID = ?";
PreparedStatement pstmt = null;
pstmt = connection.prepareStatement(sql);
pstmt.setInt(1, num);
pstmt.setInt(2, kid);
KB(kid , SID);
int count = pstmt.executeUpdate();
jdbcUtil.close(connection);
jdbcUtil.close(pstmt);
return count;
}
//课表添加
public int KB(int kid ,int SID) throws Exception {
Connection connection = jdbcUtil.getconnection();
String sql = "insert into kebiao(SID,KID) value(?,?)";
PreparedStatement pstmt = null;
pstmt = connection.prepareStatement(sql);
pstmt.setInt(1, SID);
pstmt.setInt(2, kid);
System.out.println(SID);
System.out.println(kid);
int count = pstmt.executeUpdate();
jdbcUtil.close(connection);
jdbcUtil.close(pstmt);
return count;
}
//选课人数
public int KxNum(int id) throws Exception {
Connection connection = jdbcUtil.getconnection();
PreparedStatement pstmt = null;
String sql = "select * from kecheng where KeChengID = ?";
pstmt = connection.prepareStatement(sql);
pstmt.setInt(1,id);
ResultSet rs = pstmt.executeQuery();
int count = 0;
while (rs.next()) {
count= Integer.parseInt(rs.getString("KxNum"));
}
jdbcUtil.close(connection);
jdbcUtil.close(pstmt);
rs.close();
return count;
}
//学生个人课表
public List<KeCheng> SKe_biao(int id) throws Exception {
Connection connection = jdbcUtil.getconnection();
PreparedStatement pstmt = null;
String sql = "select * from kebiao where SID = ?";
pstmt = connection.prepareStatement(sql);
pstmt.setInt(1,id);
ResultSet rs = pstmt.executeQuery();
KeCheng keCheng = null;
List<KeCheng> list = new ArrayList<>();
while (rs.next()) {
int KID= Integer.parseInt(rs.getString("KID"));
keCheng = Kget_by_id(KID);
list.add(keCheng);
}
jdbcUtil.close(connection);
jdbcUtil.close(pstmt);
rs.close();
return list;
}
//教师查看个人课表
public List<KeCheng> TKe_biao(int id) throws Exception {
Connection connection = jdbcUtil.getconnection();
String sql = "select * from kecheng where KTid= ?";
PreparedStatement pstmt = null;
pstmt = connection.prepareStatement(sql);
pstmt.setInt(1,id);
KeCheng keCheng= null;
List<KeCheng> list = new ArrayList<>();
ResultSet rs = pstmt.executeQuery();
while (rs.next()) {
int ID = Integer.parseInt(rs.getString("KeChengID"));
String KName = rs.getString("KName");
String KTime = rs.getString("KTime");
String KJie = rs.getString("KJie");
String KYuan = rs.getString("KYuan");
int KTid = Integer.parseInt(rs.getString("KTid"));
String KTName = rs.getString("KTName");
int KNum = Integer.parseInt(rs.getString("KNum"));
int KxNum = Integer.parseInt(rs.getString("KxNum"));
keCheng = new KeCheng(ID,KName, KTime, KJie, KYuan, KTid, KTName, KNum , KxNum);
list.add(keCheng);
}
jdbcUtil.close(connection);
jdbcUtil.close(pstmt);
rs.close();
return list;
}
二、pojo（略）
三、util（略）
四、service
public class Service {
public boolean Sadd(Student student) throws Exception {
Dao dao = new Dao();
boolean f = true;
if(dao.Sadd(student) == 0)
{
f = false;
}
return f;
}
public boolean Tadd(Teacher teacher) throws Exception {
Dao dao = new Dao();
boolean f = true;
if(dao.Tadd(teacher) == 0)
{
f = false;
}
return f;
}
public boolean Kadd(KeCheng keCheng) throws Exception {
Dao dao = new Dao();
boolean f = true;
if(dao.Kadd(keCheng) == 0)
{
f = false;
}
return f;
}
public List<Student> Ssel_all() throws Exception {
Dao dao = new Dao();
return dao.Sselect();
}
public Student Sget_by_id(int id) throws Exception {
Dao dao = new Dao();
return dao.Sget_by_id(id);
}
public boolean Supdate(Student student) throws Exception {
Dao dao = new Dao();
boolean f = false;
int count = dao.Supdate(student);
if(count != 0)
{
f = true;
}
return f;
}
public List<Teacher> Tsel_all() throws Exception {
Dao dao = new Dao();
return dao.Tselect();
}
public boolean Sdel(int id) throws Exception {
Dao dao = new Dao();
boolean f = true;
if(dao.Sdel(id) == 0)
{
f = false;
}
return f;
}
public Teacher Tget_by_id(int id) throws Exception {
Dao dao = new Dao();
return dao.Tget_by_id(id);
}
public boolean Tupdate(Teacher teacher) throws Exception {
Dao dao = new Dao();
boolean f = false;
int count = dao.Tupdate(teacher);
if(count != 0)
{
f = true;
}
return f;
}
public boolean Tdel(int id) throws Exception {
Dao dao = new Dao();
boolean f = true;
if(dao.Tdel(id) == 0)
{
f = false;
}
return f;
}
public KeCheng Kget_by_id(int id) throws Exception {
Dao dao = new Dao();
return dao.Kget_by_id(id);
}
public List<KeCheng> Ksel_all() throws Exception {
Dao dao = new Dao();
return dao.Kselect();
}
public boolean Kupdate(KeCheng keCheng) throws Exception {
Dao dao = new Dao();
boolean f = false;
int count = dao.Kupdate(keCheng);
if(count != 0)
{
f = true;
}
return f;
}
public boolean Kdel(int id) throws Exception {
Dao dao = new Dao();
boolean f = true;
if(dao.Kdel(id) == 0)
{
f = false;
}
return f;
}
public boolean KxNum(int id) throws Exception {
Dao dao = new Dao();
boolean f = false;
if(dao.KxNum(id) == 0)
{
f = true;
}
return f;
}
public boolean Sdenglu(String password, String sName) throws Exception {
Dao dao = new Dao();
return dao.SDengLu(sName , password);
}
public Student SDeng_Lu( String sName) throws Exception {
Dao dao = new Dao();
return dao.SDeng_Lu(sName);
}
public boolean Tdenglu(String password, String tName) throws Exception {
Dao dao = new Dao();
return dao.TDengLu(tName , password);
}
public Teacher TDeng_Lu( String tName) throws Exception {
Dao dao = new Dao();
return dao.TDeng_Lu(tName);
}
public boolean SUpP(String name, String jid, String xid) throws Exception {
Dao dao = new Dao();
boolean f = false;
if(dao.SUpP(jid , xid ,name) != 0)
{
f = true;
}
return f;
}
public boolean TUpP(String name, String jid, String xid) throws Exception {
Dao dao = new Dao();
boolean f = false;
if(dao.TUpP(jid , xid ,name) != 0)
{
f = true;
}
return f;
}
public boolean Kpan(int kid, int sid) throws Exception {
Dao dao = new Dao();
return dao.Kpan(kid, sid);
}
public List<KeCheng> SKe_biao(int sid) throws Exception {
Dao dao = new Dao();
return dao.SKe_biao(sid);
}
public List<KeCheng> TKe_biao(int id) throws Exception {
Dao dao = new Dao();
return dao.TKe_biao(id);
}
}
五、servlet
(一)S_Servlet
@WebServlet("/S_Servlet")
public class S_Servlet extends HttpServlet {
Service service = new Service();
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
request.setCharacterEncoding("utf-8");
String method = request.getParameter("method");
if("add".equals(method))
{
try {
Sadd(request , response);
} catch (Exception e) {
e.printStackTrace();
}
}
else if ("del".equals(method)) {
try {
Sdel(request, response);
} catch (Exception e) {
e.printStackTrace();
}
} else if ("update".equals(method)) {
try {
Supdate(request, response);
} catch (Exception e) {
e.printStackTrace();
}
}
else if ("sel".equals(method)) {
try {
Ssel(request, response);
} catch (Exception e) {
e.printStackTrace();
}
}
else if ("Sget_by_id".equals(method)) {
try {
Sget_by_id(request, response);
} catch (Exception e) {
e.printStackTrace();
}
}
else if ("Sget_by_ID".equals(method)) {
try {
Sget_by_ID(request, response);
} catch (Exception e) {
e.printStackTrace();
}
}
else if ("Sdeng_lu".equals(method)) {
try {
Sdeng_lu(request, response);
} catch (Exception e) {
e.printStackTrace();
}
}
else if ("SUpP".equals(method)) {
try {
SUpP(request, response);
} catch (Exception e) {
e.printStackTrace();
}
}
else if ("remi".equals(method)) {
try {
remi(request, response);
} catch (Exception e) {
e.printStackTrace();
}
}
}
private void SUpP(HttpServletRequest request, HttpServletResponse response) throws Exception {
response.setCharacterEncoding("utf-8");
response.setContentType("text/html;charset=utf-8");
String name = request.getParameter("name");
String JID = request.getParameter("password1");
String XID = request.getParameter("password2");
if (service.SUpP(name,JID,XID)) {
request.setAttribute("message" , "修改成功");
}else{
request.setAttribute("message" , "修改失败");
}
request.getRequestDispatcher("SUpP.jsp").forward(request,response);
}
private void remi(HttpServletRequest request, HttpServletResponse response) throws Exception {
response.setCharacterEncoding("utf-8");
response.setContentType("text/html;charset=utf-8");
int ID = Integer.parseInt( request.getParameter("id"));
Student student = service.Sget_by_id(ID);
request.setAttribute("student",student);
request.getRequestDispatcher("Sremi.jsp").forward(request,response);
}
private void Sdeng_lu(HttpServletRequest request, HttpServletResponse response) throws Exception {
response.setCharacterEncoding("utf-8");
response.setContentType("text/html;charset=utf-8");
String SName = request.getParameter("SName");
String password = request.getParameter("password");
if (service.Sdenglu(password, SName)) {
request.setAttribute("message", "登录成功");
Student student = service.SDeng_Lu(SName);
request.setAttribute("student",student);
request.getRequestDispatcher("S_Jie_Mian.jsp").forward(request, response);
} else {
request.setAttribute("message", "登录失败");
request.getRequestDispatcher("S_Deng_lu.jsp").forward(request, response);
}
}
private void Sget_by_id(HttpServletRequest request, HttpServletResponse response) throws Exception {
response.setCharacterEncoding("utf-8");
response.setContentType("text/html;charset=utf-8");
int ID = Integer.parseInt( request.getParameter("id"));
Student student = service.Sget_by_id(ID);
request.setAttribute("student",student);
request.getRequestDispatcher("Supdate.jsp").forward(request,response);
}
private void Sget_by_ID(HttpServletRequest request, HttpServletResponse response) throws Exception {
response.setCharacterEncoding("utf-8");
response.setContentType("text/html;charset=utf-8");
int ID = Integer.parseInt( request.getParameter("id"));
Student student = service.Sget_by_id(ID);
request.setAttribute("student",student);
request.getRequestDispatcher("Sget_by_ID.jsp").forward(request,response);
}
private void Ssel(HttpServletRequest request, HttpServletResponse response) throws Exception {
response.setCharacterEncoding("utf-8");
response.setContentType("text/html;charset=utf-8");
List<Student> list = service.Ssel_all();
request.setAttribute("list" , list);
request.getRequestDispatcher("Ssel.jsp").forward(request,response);
}
private void Supdate(HttpServletRequest request, HttpServletResponse response) throws Exception {
response.setCharacterEncoding("utf-8");
response.setContentType("text/html;charset=utf-8");
int ID = Integer.parseInt( request.getParameter("id"));
String SName = request.getParameter("SName");
String SSex = request.getParameter("SSex");
String SAge = request.getParameter("SAge");
String SZhuan = request.getParameter("SZhuan");
String SClass = request.getParameter("SClass");
Student student = new Student(ID,SName,SSex,SAge,SZhuan,SClass);
if (service.Supdate(student)) {
request.setAttribute("message" , "修改成功");
}else{
request.setAttribute("message" , "修改失败");
}
request.getRequestDispatcher("S_Servlet?method=sel").forward(request,response);
}
private void Sdel(HttpServletRequest request, HttpServletResponse response) throws Exception {
request.setCharacterEncoding("utf-8");
int id = Integer.parseInt( request.getParameter("id"));
if(service.Sdel(id))
{
request.setAttribute("message" , "删除成功");
}else{
request.setAttribute("message" , "删除失败");
}
request.getRequestDispatcher("S_Servlet?method=sel").forward(request,response);
}
private void Sadd(HttpServletRequest request, HttpServletResponse response) throws Exception {
response.setCharacterEncoding("utf-8");
response.setContentType("text/html;charset=utf-8");
String SName = request.getParameter("SName");
String SSex = request.getParameter("SSex");
String SAge = request.getParameter("SAge");
String SZhuan = request.getParameter("SZhuan");
String SClass = request.getParameter("SClass");
Student student = new Student(SName,SSex,SAge,SZhuan,SClass);
if (service.Sadd(student)) {
request.setAttribute("message" , "添加成功");
}else{
request.setAttribute("message" , "添加失败");
}
request.getRequestDispatcher("Sadd.jsp").forward(request,response);
}
@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
this.doGet(request, response);
}
}
（二）T_Servlet
@WebServlet("/T_Servlet")
public class T_Servlet extends HttpServlet {
Service service = new Service();
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
request.setCharacterEncoding("utf-8");
String method =request.getParameter("method");
if("add".equals(method))
{
try {
Tadd(request , response);
} catch (Exception e) {
e.printStackTrace();
}
}
else if ("del".equals(method)) {
try {
Tdel(request, response);
} catch (Exception e) {
e.printStackTrace();
}
} else if ("update".equals(method)) {
try {
Tupdate(request, response);
} catch (Exception e) {
e.printStackTrace();
}
}
else if ("sel".equals(method)) {
try {
Tsel(request, response);
} catch (Exception e) {
e.printStackTrace();
}
}
else if ("Tget_by_id".equals(method)) {
try {
Tget_by_id(request, response);
} catch (Exception e) {
e.printStackTrace();
}
}
else if ("Tget_by_ID".equals(method)) {
try {
Tget_by_ID(request, response);
} catch (Exception e) {
e.printStackTrace();
}
}
else if ("Tdeng_lu".equals(method)) {
try {
Tdeng_lu(request, response);
} catch (Exception e) {
e.printStackTrace();
}
}
else if ("TUpP".equals(method)) {
try {
TUpP(request, response);
} catch (Exception e) {
e.printStackTrace();
}
}
else if ("TKe_biao".equals(method)) {
try {
TKe_biao(request, response);
} catch (Exception e) {
e.printStackTrace();
}
}
}
private void TKe_biao(HttpServletRequest request, HttpServletResponse response) throws Exception {
response.setCharacterEncoding("utf-8");
response.setContentType("text/html;charset=utf-8");
int ID = Integer.parseInt( request.getParameter("id"));
List<KeCheng> list = service.TKe_biao(ID);
request.setAttribute("list",list);
request.getRequestDispatcher("TKe_biao.jsp").forward(request,response);
}
private void TUpP(HttpServletRequest request, HttpServletResponse response) throws Exception {
response.setCharacterEncoding("utf-8");
response.setContentType("text/html;charset=utf-8");
String name = request.getParameter("name");
String JID = request.getParameter("password1");
String XID = request.getParameter("password2");
if (service.TUpP(name,JID,XID)) {
request.setAttribute("message" , "修改成功");
}else{
request.setAttribute("message" , "修改失败");
}
request.getRequestDispatcher("TUpP.jsp").forward(request,response);
}
private void Tdeng_lu(HttpServletRequest request, HttpServletResponse response) throws Exception {
response.setCharacterEncoding("utf-8");
response.setContentType("text/html;charset=utf-8");
String SName = request.getParameter("TName");
String password = request.getParameter("password");
if (service.Tdenglu(password , SName)) {
request.setAttribute("message" , "登录成功");
Teacher teacher = service.TDeng_Lu(SName);
request.setAttribute("teacher",teacher);
request.getRequestDispatcher("T_Jie_mian.jsp").forward(request,response);
}else{
request.setAttribute("message" , "登录失败");
request.getRequestDispatcher("T_Deng_lu.jsp").forward(request,response);
}
}
private void Tget_by_id(HttpServletRequest request, HttpServletResponse response) throws Exception {
response.setCharacterEncoding("utf-8");
response.setContentType("text/html;charset=utf-8");
int ID = Integer.parseInt( request.getParameter("id"));
Teacher teacher = service.Tget_by_id(ID);
request.setAttribute("teacher",teacher);
request.getRequestDispatcher("Tupdate.jsp").forward(request,response);
}
private void Tget_by_ID(HttpServletRequest request, HttpServletResponse response) throws Exception {
response.setCharacterEncoding("utf-8");
response.setContentType("text/html;charset=utf-8");
int ID = Integer.parseInt( request.getParameter("id"));
Teacher teacher = service.Tget_by_id(ID);
request.setAttribute("teacher",teacher);
request.getRequestDispatcher("T_get_by_ID.jsp").forward(request,response);
}
private void Tsel(HttpServletRequest request, HttpServletResponse response) throws Exception {
response.setCharacterEncoding("utf-8");
response.setContentType("text/html;charset=utf-8");
List<Teacher> list = service.Tsel_all();
request.setAttribute("list" , list);
request.getRequestDispatcher("Tsel.jsp").forward(request,response);
}
private void Tupdate(HttpServletRequest request, HttpServletResponse response) throws Exception {
response.setCharacterEncoding("utf-8");
response.setContentType("text/html;charset=utf-8");
int ID = Integer.parseInt( request.getParameter("id"));
String TName = request.getParameter("TName");
String TZhi = request.getParameter("TZhi");
String TYuan = request.getParameter("TYuan");
Teacher teacher = new Teacher(ID,TName,TZhi,TYuan);
if (service.Tupdate(teacher)) {
request.setAttribute("message" , "修改成功");
}else{
request.setAttribute("message" , "修改失败");
}
request.getRequestDispatcher("T_Servlet?method=sel").forward(request,response);
}
private void Tdel(HttpServletRequest request, HttpServletResponse response) throws Exception {
request.setCharacterEncoding("utf-8");
int id = Integer.parseInt( request.getParameter("id"));
if(service.Tdel(id))
{
request.setAttribute("message" , "删除成功");
}else{
request.setAttribute("message" , "删除失败");
}
request.getRequestDispatcher("T_Servlet?method=sel").forward(request,response);
}
private void Tadd(HttpServletRequest request, HttpServletResponse response) throws Exception {
response.setCharacterEncoding("utf-8");
response.setContentType("text/html;charset=utf-8");
int id = Integer.parseInt(request.getParameter("TeacherID"));
String TName = request.getParameter("TName");
String TZhi = request.getParameter("TZhi");
String TYuan = request.getParameter("TYuan");
Teacher teacher = new Teacher(id,TName,TZhi,TYuan);
if (service.Tadd(teacher)) {
request.setAttribute("message" , "添加成功");
}else{
request.setAttribute("message" , "添加失败");
}
request.getRequestDispatcher("Tadd.jsp").forward(request,response);
}
@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
this.doGet(request, response);
}
}
（三）K_Servlet
@WebServlet("/K_Servlet")
public class K_Servlet extends HttpServlet {
Service service = new Service();
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
request.setCharacterEncoding("utf-8");
String method =request.getParameter("method");
if("add".equals(method))
{
try {
Kadd(request , response);
} catch (Exception e) {
e.printStackTrace();
}
}
else if ("del".equals(method)) {
try {
Kdel(request, response);
} catch (Exception e) {
e.printStackTrace();
}
} else if ("update".equals(method)) {
try {
Kupdate(request, response);
} catch (Exception e) {
e.printStackTrace();
}
}
else if ("sel".equals(method)) {
try {
Ksel(request, response);
} catch (Exception e) {
e.printStackTrace();
}
}
else if ("Kget_by_id".equals(method)) {
try {
Kget_by_id(request, response);
} catch (Exception e) {
e.printStackTrace();
}
}
else if ("KTget_by_id".equals(method)) {
try {
KTget_by_id(request, response);
} catch (Exception e) {
e.printStackTrace();
}
}
else if ("Ssel".equals(method)) {
try {
Ssel(request, response);
} catch (Exception e) {
e.printStackTrace();
}
}
else if ("KXuan".equals(method)) {
try {
KXuan(request, response);
} catch (Exception e) {
e.printStackTrace();
}
}
else if ("SKe_biao".equals(method)) {
try {
SKe_biao(request, response);
} catch (Exception e) {
e.printStackTrace();
}
}
}
private void SKe_biao(HttpServletRequest request, HttpServletResponse response) throws Exception {
response.setCharacterEncoding("utf-8");
response.setContentType("text/html;charset=utf-8");
int ID = Integer.parseInt( request.getParameter("id"));
List<KeCheng> list = service.SKe_biao( ID );
request.setAttribute("list" , list);
request.getRequestDispatcher("SKe_biao.jsp").forward(request,response);
}
private void KXuan(HttpServletRequest request, HttpServletResponse response) throws Exception {
response.setCharacterEncoding("utf-8");
response.setContentType("text/html;charset=utf-8");
int KID = Integer.parseInt( request.getParameter("KID"));
int SID = Integer.parseInt( request.getParameter("SID"));
if(service.Kpan(KID,SID))
{
request.setAttribute("message" , "选课成功");
}else{
request.setAttribute("message" , "该课程已经超过选课人数限制，选课失败");
}
request.getRequestDispatcher("K_Ssel.jsp").forward(request,response);
}
private void Ssel(HttpServletRequest request, HttpServletResponse response) throws Exception {
response.setCharacterEncoding("utf-8");
response.setContentType("text/html;charset=utf-8");
List<KeCheng> list = service.Ksel_all();
int ID = Integer.parseInt( request.getParameter("id"));
request.setAttribute("list" , list);
Student student = new Student();
student.setStudentID(ID);
request.setAttribute("student",student);
request.getRequestDispatcher("K_Ssel.jsp").forward(request,response);
}
private void Kget_by_id(HttpServletRequest request, HttpServletResponse response) throws Exception {
response.setCharacterEncoding("utf-8");
response.setContentType("text/html;charset=utf-8");
int ID = Integer.parseInt( request.getParameter("id"));
KeCheng keCheng = service.Kget_by_id(ID);
request.setAttribute("keCheng",keCheng);
request.getRequestDispatcher("Kupdate.jsp").forward(request,response);
}
private void KTget_by_id(HttpServletRequest request, HttpServletResponse response) throws Exception {
response.setCharacterEncoding("utf-8");
response.setContentType("text/html;charset=utf-8");
int ID = Integer.parseInt( request.getParameter("id"));
KeCheng keCheng = service.Kget_by_id(ID);
request.setAttribute("keCheng",keCheng);
request.getRequestDispatcher("KTupdate.jsp").forward(request,response);
}
private void Ksel(HttpServletRequest request, HttpServletResponse response) throws Exception {
response.setCharacterEncoding("utf-8");
response.setContentType("text/html;charset=utf-8");
List<KeCheng> list = service.Ksel_all();
request.setAttribute("list" , list);
request.getRequestDispatcher("Ksel.jsp").forward(request,response);
}
private void Kupdate(HttpServletRequest request, HttpServletResponse response) throws Exception {
response.setCharacterEncoding("utf-8");
response.setContentType("text/html;charset=utf-8");
int ID = Integer.parseInt( request.getParameter("id"));
String KName = request.getParameter("KName");
String KTime = request.getParameter("KTime");
String KJie = request.getParameter("KJie");
String KYuan = request.getParameter("KYuan");
int KTid = Integer.parseInt(request.getParameter("KTid"));
String KTName = request.getParameter("KTName");
int KNum = Integer.parseInt(request.getParameter("KNum"));
KeCheng keCheng = new KeCheng(ID,KName,KTime,KJie, KYuan, KTid, KTName,KNum);
if (service.Kupdate(keCheng)) {
request.setAttribute("message" , "修改成功");
}else{
request.setAttribute("message" , "修改失败");
}
request.getRequestDispatcher("K_Servlet?method=sel").forward(request,response);
}
private void Kdel(HttpServletRequest request, HttpServletResponse response) throws Exception {
request.setCharacterEncoding("utf-8");
int id = Integer.parseInt( request.getParameter("id"));
if(service.Kdel(id) && service.KxNum(id))
{
request.setAttribute("message" , "删除成功");
}
else if( !service.KxNum(id) ){
request.setAttribute("message" , "该课程已经被选，不允许删除");
}
request.getRequestDispatcher("K_Servlet?method=sel").forward(request,response);
}
private void Kadd(HttpServletRequest request, HttpServletResponse response) throws Exception {
response.setCharacterEncoding("utf-8");
response.setContentType("text/html;charset=utf-8");
String KName = request.getParameter("KName");
String KTime = request.getParameter("KTime");
String KJie = request.getParameter("KJie");
String KYuan = request.getParameter("KYuan");
int KTid = Integer.parseInt(request.getParameter("KTid"));
String KTName = request.getParameter("KTName");
int KNum = Integer.parseInt(request.getParameter("KNum"));
KeCheng keCheng = new KeCheng(KName,KTime,KJie, KYuan, KTid, KTName,KNum);
if (service.Kadd(keCheng)) {
request.setAttribute("message" , "添加成功");
}else{
request.setAttribute("message" , "添加失败");
}
request.getRequestDispatcher("Kadd.jsp").forward(request,response);
}
@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
this.doGet(request, response);
}
}
六、JSP
（一）菜单
<%--
Created by IntelliJ IDEA.
User: wanghongbing
Date: 2022/11/11
Time: 13:56
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>石家庄铁道大学学生选课管理系统</title>
</head>
<body>
<div align="center">
<div class="a">
<input type="button" value="学生" onclick="location.href='S_Deng_lu.jsp'"/>
</div>
<div class="a">
<input type="button" value="教师" onclick="location.href='T_Deng_lu.jsp'"/>
</div>
<div class="a">
<input type="button" value="管理员" onclick="location.href='G_Jie_Mian.jsp'"/>
</div>
</div>
</body>
</html>
（二）管理员
管理员菜单
<%--
Created by IntelliJ IDEA.
User: wanghongbing
Date: 2022/11/11
Time: 15:58
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>Title</title>
</head>
<body>
<div align="center">
<div class="a">
<input type="button" value="新添学生基本信息" onclick="location.href='Sadd.jsp'"/>
</div>
<div class="a">
<input type="button" value="修改学生基本信息" onclick="location.href='S_Servlet?method=sel'"/>
</div>
<div class="a">
<input type="button" value="删除学生基本信息" onclick="location.href='S_Servlet?method=sel'"/>
</div>
<div class="a">
<input type="button" value="新添教师基本信息" onclick="location.href='Tadd.jsp'"/>
</div>
<div class="a">
<input type="button" value="修改教师基本信息" onclick="location.href='T_Servlet?method=sel'"/>
</div>
<div class="a">
<input type="button" value="删除教师基本信息" onclick="location.href='T_Servlet?method=sel'"/>
</div>
<div class="a">
<input type="button" value="新添课程基本信息" onclick="location.href='Kadd.jsp'"/>
</div>
<div class="a">
<input type="button" value="修改课程基本信息" onclick="location.href='K_Servlet?method=sel'"/>
</div>
<div class="a">
<input type="button" value="删除课程信息" onclick="location.href='K_Servlet?method=sel'"/>
</div>
<div class="a">
<input type="button" value="密码重置" onclick="location.href='remi.jsp'"/>
</div>
</div>
</body>
</html>
课程添加
<%--
Created by IntelliJ IDEA.
User: wanghongbing
Date: 2022/11/11
Time: 16:53
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>Title</title>
</head>
<body>
<%
Object message = request.getAttribute("message");
if(message!=null && !"".equals(message)){
%>
<script type="text/javascript">
alert("<%=request.getAttribute("message")%>");
</script>
<%} %>
<div align="center">
<h1 style="color: black;">添加学生信息</h1>
<form name="form3" action="K_Servlet?method=add" method="post" onsubmit="return check()">
<table align="center" border="1" width="1000">
<tr>
<td>课程名称</td>
<td>
<label>
<input type="text" name="KName" />
</label>
</td>
</tr>
<tr>
<td>开课时间 </td>
<td>
<label>
<input type="radio" name="KTime" value="星期一"checked>星期一
<input type="radio" name="KTime" value="星期二">星期二
<input type="radio" name="KTime" value="星期三">星期三
<input type="radio" name="KTime" value="星期四">星期四
<input type="radio" name="KTime" value="星期五">星期五
</label>
</td>
</tr>
<tr>
<td>开课节次 </td>
<td>
<label>
<input type="radio" name="KJie" value="1-2节"checked>1-2节
<input type="radio" name="KJie" value="3-4节">3-4节
<input type="radio" name="KJie" value="5-6节">5-6节
<input type="radio" name="KJie" value="7-8节">7-8节
<input type="radio" name="KJie" value="9-10节">9-10节
</label>
</td>
</tr>
<tr>
<td>所属学院</td>
<td>
<label>
<input type="radio" name="KYuan" value="信息"checked>信息
<input type="radio" name="KYuan" value="土木">土木
<input type="radio" name="KYuan" value="机械">机械
<input type="radio" name="KYuan" value="电气">电气
<input type="radio" name="kYuan" value="交通">交通
</label>
</td>
</tr>
<tr>
<td>任课教师工号</td>
<td>
<label>
<input type="text" name="KTid" />
</label>
</td>
</tr>
<tr>
<td>任课教师名称</td>
<td>
<label>
<input type="text" name="KTName" />
</label>
</td>
</tr>
<tr>
<td>选课限制人数</td>
<td>
<label>
<input type="text" name="KNum" />
</label>
</td>
</tr>
<tr align="center">
<td colspan="3">
<input type="submit" value="提交" />
<input type="reset" value="重置" />
<a href="index.jsp">返回主页</a>
</td>
</tr>
</table>
</form>
</div>
</body>
</html>
课程浏览
<%--
Created by IntelliJ IDEA.
User: wanghongbing
Date: 2022/11/12
Time: 17:39
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<html>
<head>
<title>Title</title>
</head>
<body>
<%
Object message = request.getAttribute("message");
if(message != null && !"".equals(message)){
%>
<script type="text/javascript">
alert("<%=request.getAttribute("message")%>");
</script>
<%}%>
<div align="center">
<h1 style="color: black;">信息列表</h1>
<table border="1px">
<tr>
<td>课程编号</td>
<td>课程名称</td>
<td>开课时间</td>
<td>开课节次</td>
<td>所属学院</td>
<td>任课教师工号</td>
<td>任课教师名称</td>
<td>选课限制人数</td>
<td>已选课人数</td>
</tr>
<c:forEach items="${list}" var="item">
<tr>
<td>${item.keChengID}</td>
<td>${item.KName}</td>
<td>${item.KTime}</td>
<td>${item.KJie}</td>
<td>${item.KYuan}</td>
<td>${item.KTid}</td>
<td>${item.KTName}</td>
<td>${item.KNum}</td>
<td>${item.kxNum}</td>
<td><a href="K_Servlet?method=Kget_by_id&&id=${item.keChengID}">修改</a></td>
<td><a href="K_Servlet?method=del&&id=${item.keChengID}">删除</a></td>
<td><a href="index.jsp">返回主页</a></td>
</tr>
</c:forEach>
</table>
</div>
</body>
</html>
课程修改
<%--
Created by IntelliJ IDEA.
User: wanghongbing
Date: 2022/11/12
Time: 17:39
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>Title</title>
</head>
<body>
<%
Object message = request.getAttribute("message");
if(message!=null && !"".equals(message)){
%>
<script type="text/javascript">
alert("<%=request.getAttribute("message")%>");
</script>
<%} %>
<div align="center">
<h1 style="color: black;">修改课程信息</h1>
<form name="form3" action="K_Servlet?method=update&&id=${requestScope.keCheng.keChengID}" method="post" onsubmit="return check()">
<table align="center" border="1" width="1000">
<tr>
<td>课程编号</td>
<td>
<label>
<input value="${requestScope.keCheng.keChengID}"/>
</label>
</td>
</tr>
<tr>
<td>课程名称</td>
<td>
<label>
<input type="text" name="KName" value="${requestScope.keCheng.KName}" readonly="readonly"/>
</label>
</td>
</tr>
<tr>
<td>开课时间 </td>
<td>
<label>
<input type="radio" name="KTime" value="星期一"checked>星期一
<input type="radio" name="KTime" value="星期二">星期二
<input type="radio" name="KTime" value="星期三">星期三
<input type="radio" name="KTime" value="星期四">星期四
<input type="radio" name="KTime" value="星期五">星期五
</label>
</td>
</tr>
<tr>
<td>开课节次 </td>
<td>
<label>
<input type="radio" name="KJie" value="1-2节"checked>1-2节
<input type="radio" name="KJie" value="3-4节">3-4节
<input type="radio" name="KJie" value="5-6节">5-6节
<input type="radio" name="KJie" value="7-8节">7-8节
<input type="radio" name="KJie" value="9-10节">9-10节
</label>
</td>
</tr>
<tr>
<td>所属学院</td>
<td>
<label>
<input type="radio" name="KYuan" value="信息"checked>信息
<input type="radio" name="KYuan" value="土木">土木
<input type="radio" name="KYuan" value="机械">机械
<input type="radio" name="KYuan" value="电气">电气
<input type="radio" name="KYuan" value="交通">交通
</label>
</td>
</tr>
<tr>
<td>任课教师工号</td>
<td>
<label>
<input type="text" name="KTid" value="${requestScope.keCheng.KTid}"/>
</label>
</td>
</tr>
<tr>
<td>任课教师名称</td>
<td>
<label>
<input type="text" name="KTName" value="${requestScope.keCheng.KTName}"/>
</label>
</td>
</tr>
<tr>
<td>选课限制人数</td>
<td>
<label>
<input type="text" name="KNum" value="${requestScope.keCheng.KNum}"/>
</label>
</td>
</tr>
<tr align="center">
<td colspan="3">
<input type="submit" value="提交" />
<input type="reset" value="重置" />
<a href="index.jsp">返回主页</a>
</td>
</tr>
</table>
</form>
</div>
</body>
</html>
（三）学生
学生登录
<%--
Created by IntelliJ IDEA.
User: wanghongbing
Date: 2022/11/18
Time: 14:42
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>Title</title>
</head>
<body>
<%
Object message = request.getAttribute("message");
if(message != null && !"".equals(message)){
%>
<script type="text/javascript">
alert("<%=request.getAttribute("message")%>");
</script>
<%}%>
<div align="center">
<h1 style="color: black;">学生登录</h1>
<form name="form3" action="S_Servlet?method=Sdeng_lu" method="post" >
<table align="center">
请输入姓名:<input type="text" name="SName" /><br>
请输入密码:<input type="text" name="password" /><br>
<input type="submit" value="登录" />
</table>
</form>
</div>
</body>
</html>
学生添加
<%--
Created by IntelliJ IDEA.
User: wanghongbing
Date: 2022/11/11
Time: 15:53
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>Title</title>
</head>
<body>
<%
Object message = request.getAttribute("message");
if(message!=null && !"".equals(message)){
%>
<script type="text/javascript">
alert("<%=request.getAttribute("message")%>");
</script>
<%} %>
<div align="center">
<h1 style="color: black;">添加学生信息</h1>
<form name="form1" action="S_Servlet?method=add" method="post" onsubmit="return check()">
<table align="center" border="1" width="1000">
<tr>
<td>姓名</td>
<td>
<label>
<input type="text" name="SName"/>
</label>
</td>
</tr>
<tr>
<td>性别 </td>
<td>
<label>
<input type="radio" name="SSex" value="男"checked>男
<input type="radio" name="SSex" value="女">女
</label>
</td>
</tr>
<tr>
<td>年龄</td>
<td>
<label>
<input type="text" name="SAge" />
</label>
</td>
</tr>
<tr>
<td>专业 </td>
<td>
<label>
<input type="radio" name="SZhuan" value="计算机科学与技术"checked>计算机科学与技术
<input type="radio" name="SZhuan" value="软件工程">软件工程
<input type="radio" name="SZhuan" value="网络工程">网络工程
<input type="radio" name="SZhuan" value="数字媒体技术">数字媒体技术
</label>
</td>
</tr>
<tr>
<td>班级</td>
<td>
<label>
<input type="text" name="SClass" />
</label>
</td>
</tr>
<tr align="center">
<td colspan="3">
<input type="submit" value="提交" />
<input type="reset" value="重置" />
<a href="index.jsp">返回主页</a>
</td>
</tr>
</table>
</form>
</div>
</body>
</html>
学生主界面
<%--
Created by IntelliJ IDEA.
User: wanghongbing
Date: 2022/11/11
Time: 15:57
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>Title</title>
</head>
<body>
<%
Object message = request.getAttribute("message");
if(message != null && !"".equals(message)){
%>
<script type="text/javascript">
alert("<%=request.getAttribute("message")%>");
</script>
<%}%>
<div align="center">
<div class="a">
<input type="button" value="查看个人信息" onclick="location.href='S_Servlet?method=Sget_by_ID&&id=${requestScope.student.studentID}'"/>
</div>
<div class="a">
<input type="button" value="修改个人基本信息" onclick="location.href='S_Servlet?method=Sget_by_id&&id=${requestScope.student.studentID}'"/>
</div>
<div class="a">
<input type="button" value="修改个人密码" onclick="location.href='SUpP.jsp'"/>
</div>
<div class="a">
<input type="button" value="查询课程信息" onclick="location.href='K_Servlet?method=Ssel&&id=${requestScope.student.studentID}'"/>
</div>
<div class="a">
<input type="button" value="自助选课" onclick="location.href='K_Servlet?method=Ssel&&id=${requestScope.student.studentID}'"/>
</div>
<div class="a">
<input type="button" value="查询个人课表" onclick="location.href='K_Servlet?method=SKe_biao&&id=${requestScope.student.studentID}'"/>
</div>
</div>
</body>
</html>
学生修改密码
<%--
Created by IntelliJ IDEA.
User: wanghongbing
Date: 2022/11/18
Time: 21:22
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>Title</title>
</head>
<body>
<div align="center">
<h1 style="color: black;">信息</h1>
<form name="form1" action="S_Servlet?method=update&&id=${requestScope.student.studentID}" method="post" onsubmit="return check()">
<table align="center" border="1" width="500">
<tr>
<td>姓名</td>
<td>
<label>
<input value="${requestScope.student.SName}" />
</label>
</td>
</tr>
<tr>
<td>性别 </td>
<td>
<label>
<input type="radio" name="SSex" value="男"checked>男
<input type="radio" name="SSex" value="女">女
</label>
</td>
</tr>
<tr>
<td>年龄</td>
<td>
<label>
<input type="text" name="SAge" value="${requestScope.student.SAge}" />
</label>
</td>
</tr>
<tr>
<td>专业 </td>
<td>
<label>
<input type="radio" name="SZhuan" value="计算机科学与技术"checked>计算机科学与技术
<input type="radio" name="SZhuan" value="软件工程">软件工程
<input type="radio" name="SZhuan" value="网络工程">网络工程
<input type="radio" name="SZhuan" value="野外采风">数字媒体技术
</label>
</td>
</tr>
<tr>
<td>班级</td>
<td>
<label>
<input type="text" name="SClass" value="${requestScope.student.SClass}"/>
</label>
</td>
</tr>
<tr align="center">
<td colspan="3">
<input type="submit" value="提交" />
<input type="reset" value="重置" />
<a href="index.jsp">返回主页</a>
</td>
</tr>
</table>
</form>
</div>
</body>
</html>
学生查看个人课表
<%--
Created by IntelliJ IDEA.
User: wanghongbing
Date: 2022/11/18
Time: 17:31
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<html>
<head>
<title>Title</title>
</head>
<body>
<%
Object message = request.getAttribute("message");
if(message != null && !"".equals(message)){
%>
<script type="text/javascript">
alert("<%=request.getAttribute("message")%>");
</script>
<%}%>
<div align="center">
<h1 style="color: black;">个人课表</h1>
<table border="1px">
<tr>
<td>课程名称</td>
<td>开课时间</td>
<td>开课节次</td>
</tr>
<c:forEach items="${list}" var="item">
<tr>
<td>${item.KName}</td>
<td>${item.KTime}</td>
<td>${item.KJie}</td>
<td><a href="index.jsp">返回主页</a></td>
</tr>
</c:forEach>
</table>
</div>
</body>
</html>
(四)教师
教师主界面
<%--
Created by IntelliJ IDEA.
User: wanghongbing
Date: 2022/11/11
Time: 15:57
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>Title</title>
</head>
<body>
<%
Object message = request.getAttribute("message");
if(message != null && !"".equals(message)){
%>
<script type="text/javascript">
alert("<%=request.getAttribute("message")%>");
</script>
<%}%>
<div align="center">
<div class="a">
<input type="button" value="查看个人信息" onclick="location.href='T_Servlet?method=Tget_by_ID&&id=${requestScope.teacher.teacherID}'"/>
</div>
<div class="a">
<input type="button" value="修改个人基本信息" onclick="location.href='T_Servlet?method=Tget_by_id&&id=${requestScope.teacher.teacherID}'"/>
</div>
<div class="a">
<input type="button" value="修改个人密码" onclick="location.href='TUpP.jsp'"/>
</div>
<div class="a">
<input type="button" value="修改个人所教授课程" onclick="location.href='T_Servlet?method=TKe_biao&&id=${requestScope.teacher.teacherID}'"/>
</div>
<div class="a">
<input type="button" value="查询个人课表" onclick="location.href='T_Servlet?method=TKe_biao&&id=${requestScope.teacher.teacherID}'"/>
</div>
</div>
</body>
</html>
其余(略)
标签：Exception,String,管理系统,选课,request,学生,id,response,pstmt From： https://www.cnblogs.com/fan-wang/p/16907013.html