开发工具：eclipse/idea/myeclipse/sts等均可配置运行
适用
课程设计，大作业，毕业设计，项目练习，学习演示等
//学生课程退选 及 该课程“已选人数”减1
public boolean courseDelete(String sid,String cid) {
if(studentDao.isExistRecord(sid,cid)) { //选修记录存在
return studentDao.courseDelete(sid,cid) & studentDao.cutCourseNum(cid);
}
else {
return false;
}
}
//增加学生选课记录 及 该课程“已选人数”加1
public boolean addChooseCourse(Score score) {
//选修记录不存在 和 可选人数>0 才能增加
if(!studentDao. isExistRecord(score.getsId(),score.getcId())) {
if(studentDao.surplusCount(score.getcId())>0) { // =0:系统异常和可选人数为0
return studentDao.addChooseCourse(score) & studentDao.addCourseNum(score.getcId());
}
else {
return false;
}
}
connection=con.getConnection();
String sql="select cId,cName,credit,period,cPlace,cNumAll,cNum,tName from course,teacher where course.tId=teacher.tId";
pstmt=connection.prepareStatement(sql);
rs=pstmt.executeQuery();
while(rs.next()) {
String cid=rs.getString("cId");
String cname=rs.getString("cName");
String credit=rs.getString("credit");
String period=rs.getString("period");
String cplace=rs.getString("cPlace");
String cnumall=rs.getString("cNumAll");
String cnum=rs.getString("cNum");
String tname=rs.getString("tName");
course=new Course(cid,cname,credit,period,cplace,cnumall,cnum,tname);
courses.add(course);
}
return courses;
}catch(ClassNotFoundException e) {
e.printStackTrace();
}
}
}
//根据教师号删除教师详细信息
public boolean deleteTeadetailByTid(String tid) {
Connection connection=null;
PreparedStatement pstmt=null;
int row;
try{
DBUtil con=new DBUtil();
connection=con.getConnection();
String sql="delete from teadetail where tId=?";
pstmt=connection.prepareStatement(sql);
pstmt.setString(1, tid); //替换上面的？
row=pstmt.executeUpdate();
if(row>0) {
return true;
}
else {
return false;
}
}catch(ClassNotFoundException e) {
<li>
<a href="addstudent.jsp">添加学生</a><hr>
</li>
<li>
<a href="addteacher.jsp">添加老师</a><hr>
</li>
<li>
<a href="AllStuQueryServlet">查询学生</a><hr>
</li>
<li>
<a href="AllTeaQueryServlet">查询老师</a><hr>
</li>
<li>
}catch(ClassNotFoundException e) {
e.printStackTrace();
return false;
}catch(SQLException e) {
e.printStackTrace();
return false;
}catch(Exception e) {
e.printStackTrace();
return false;
}finally {
try {
}catch(ClassNotFoundException e) {
e.printStackTrace();
return false;
}catch(SQLException e) {
e.printStackTrace();
return false;
}catch(Exception e) {
e.printStackTrace();
return false;
}finally {
try {
if(pstmt!=null)pstmt.close();
if(connection!=null)connection.close();
}catch(SQLException e) {
e.printStackTrace();
}
}
}
#middle{
display:table;
table-layout:fixed;
margin-top:0;
width:100%;
heigth:950px;
}
#nav-wrapper{
margin-top: 2px;
padding: 0.75em;
background-color:#87CEFA;
border-right: 1px solid #bbb;
border-bottom: 1px solid #bbb;
font-size: 10pt;
border-bottom-right-radius: 0px;
box-shadow: 0 0 5px #aaa;
e.printStackTrace();
}
}
}
public boolean isExistAid(String aid) {//true:此人存在 false：此人不存在
return queryByAid(aid)==null? false:true;
}
public Admin queryByAid(String aid) {
Connection connection=null;
PreparedStatement pstmt=null;
ResultSet rs=null;
Admin admin=null;
try{
DBUtil con=new DBUtil();
connection=con.getConnection();
String sql="select * from admin where aId=?";
pstmt=connection.prepareStatement(sql);
connection=con.getConnection();
String sql="delete from choosecourse where sId=?";
pstmt=connection.prepareStatement(sql);
pstmt.setString(1, sid); //替换上面的？
row=pstmt.executeUpdate();
if(row>0) {
return true;
}
else {
return false;
try {
if(rs!=null)rs.close();
if(pstmt!=null)pstmt.close();
if(connection!=null)connection.close();
}catch(SQLException e) {
e.printStackTrace();
}
}
}
//增加学生
public boolean addStudent(Student student1) {
Connection connection=null;
PreparedStatement pstmt=null;
int row;
try{
DBUtil con=new DBUtil();
connection=con.getConnection();
border-collapse: collapse;
text-align: left;
}
#middle > div { display: table-row; }
#middle > div > div { display: table-cell; vertical-align: top; }
#mainLeft {
width: 190px;
transition: width 0.4s;
height:400px;
padding-left: 7px;
padding-top:20px;
<td align="center"><%=course.getPeriod() %></td>
<td align="center"><%=course.getcPlace() %></td>
<td align="center"><%=course.getcNum() %></td>
</tr>
<%
}
%>
</table>
<%
}catch(Exception e){
e.printStackTrace();
}
%>
</div>
</nav>
</div>
</div>
</div>
</main>
</div>
</body>
text-decoration: none;
color: #444;
}
#mainRight {
padding-left: 14px;
padding-right: 15px;
padding-top:20px;
text-indent: 0.6em;
}
#ind{
color:#8B4513;
}
#hea{
color:white;
}
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>开课</title>
<style type="text/css">
body, input {
font-family: 'Open Sans', sans-serif;
font-size: 10.5pt;
}
table {
border-collapse: collapse;
text-align: left;
}
#middle > div { display: table-row; }
#middle > div > div { display: table-cell; vertical-align: top; }
#mainLeft {
width: 190px;
transition: width 0.4s;
padding-left: 7px;
<%
while (iter.hasNext()) {
Course course = iter.next();
%>
<tr>
<td height="30" bgcolor="wheat"><%=course.getcName()%></td>
<td height="30" bgcolor="beige"><%=course.getCredit()%></td>
<td height="30" bgcolor="wheat"><%=course.getPeriod()%></td>
<td height="30" bgcolor="beige"><%=course.getcPlace()%></td>
<td height="30" bgcolor="wheat"><%=course.gettName()%></td>
<td height="30" bgcolor="beige">
<a href="StuCourseDelServlet?sid=<%=(String) session.getAttribute("id")%>&cid=<%=course.getcId()%>">退选</a></td>
</tr>
<%
}
%>
</table>
<%
} catch (Exception e) {
e.printStackTrace();
}
%>
</div>
}
#mainRight {
padding-left: 14px;
padding-right: 15px;
padding-top:20px;
text-indent: 0.6em;
}
#ind{
color:#4169E1;
}
#hea{
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
doGet(request, response);
}
}
package com.demo.servlet;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
String credit=request.getParameter("credit");
String period=request.getParameter("period");
String cPlace=request.getParameter("cPlace");
String cNumAll=request.getParameter("cNumAll");
String cNum=request.getParameter("cNum");
String dId=request.getParameter("dId");
Course course=new Course(cId,cName,tId,credit,period,cPlace,cNumAll,cNum,dId); //封装到实体类
AdminService adminService=new AdminService();
boolean result=adminService.addCourse(course);
//PrintWriter out=response.getWriter();
/*if(result) {
out.println("注册成功！");
response.sendRedirect("StudentQueryAllServlet");
}
else {
out.println("注册失败，该学生已存在，请检查学号是否正确！");
}*/
if(!result) { //注册失败
request.setAttribute("error", "addError");
}
else { //注册成功
margin-top:0;
width:100%;
heigth:950px;
}
#nav-wrapper{
margin-top: 2px;
padding: 0.75em;
background-color:#87CEFA;
border-right: 1px solid #bbb;
border-bottom: 1px solid #bbb;
font-size: 10pt;
border-bottom-right-radius: 0px;
box-shadow: 0 0 5px #aaa;
heigth:400px;
}
#nav-wrapper1{
margin-top: 2px;
padding: 0.75em;
background-color:#ADD8E6;
PreparedStatement pstmt=null;
ResultSet rs=null;
Teacher teacher=null;
try{
DBUtil con=new DBUtil();
connection=con.getConnection();
String sql="select teacher.*,teadetail.* from teacher,teadetail where teacher.tId=teadetail.tId and teacher.tId=?";
pstmt=connection.prepareStatement(sql);
pstmt.setString(1, tid); //替换上面的？
rs=pstmt.executeQuery();
if(rs.next()) { //只有一条数据，不用循环
}
}
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ page import="com.demo.vo.Course"%>
<%@ page import="java.util.*" %>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>选课查询及其退选</title>
<style type="text/css">
td{text-align:center}
</style>
<style type="text/css">
body, input {
border-bottom-right-radius: 0px;
box-shadow: 0 0 5px #aaa;
heigth:400px;
}
#nav-wrapper1{
margin-top: 2px;
padding: 0.75em;
background-color:#ADD8E6;
border-left: 1px solid #bbb;
border-bottom: 1px solid #bbb;
font-size: 10pt;
border-bottom-left-radius: 0px;
box-shadow: 0 0 5px #aaa;
heigth:500px;
}
#mainLeft h2 {
margin-bottom: 0.2em;
font-size: 1.2em;
}
public void settPass(String tPass) {
this.tPass = tPass;
}
public String getdId() {
return dId;
}
public void setdId(String dId) {
this.dId = dId;
}
public String gettSex() {
return tSex;
}
public void settSex(String tSex) {
this.tSex = tSex;
}
public String gettAge() {
return tAge;
}
<li>
<a href="StuCourseQueryServlet?sid=<%=(String)session.getAttribute("id")%>">选课查询以及退选</a><hr>
</li>
<li>
<a href="StuAllCourseQueryServlet">选课</a><hr>
</li>
<li>
<a href="StuDeleteServlet?sid=<%=(String)session.getAttribute("id")%>">注销</a><hr>
</li>
</ul>
<br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br>
</div>
</nav>
</div>
</div>
<div id="mainRight">
<div id="nav-wrapper1">
<nav>
String name=rs.getString("sName");
String pass=rs.getString("sPass");
String did=rs.getString("dId");
String sex=rs.getString("sSex");
String mobil=rs.getString("sMobil");
String adr=rs.getString("sAddress");
student=new Student(id,name,pass,did,sex,mobil,adr);
students.add(student);
}
return students;
}catch(ClassNotFoundException e) {
e.printStackTrace();
return null;
}catch(SQLException e) {
e.printStackTrace();
return null;
}catch(Exception e) {
e.printStackTrace();
return null;
}finally {
try {
}
}
}
//删除所有选修了该老师所教授课程的选课记录
public boolean deleteRecord(String tid) {
Connection connection=null;
PreparedStatement pstmt=null;
int row;
try{
DBUtil con=new DBUtil();
connection=con.getConnection();
String sql="delete from choosecourse where cId in (select cId from course where tId=?)";
pstmt=connection.prepareStatement(sql);
pstmt.setString(1, tid); //替换上面的？
row=pstmt.executeUpdate();
if(row>0) {
return true;
}
else {
return false;
}
适用
课程设计，大作业，毕业设计，项目练习，学习演示等
运行环境
Java≥8、Tomcat≥7.0、MySQL≥5.5
开发工具
eclipse/idea/myeclipse/sts等均可配置运行
技术框架
CSS JavaScript JSP Servlet JDBC MySQL
适用
课程设计，大作业，毕业设计，项目练习，学习演示等
功能说明
管理员：个人信息、学生、老师、学生、课程等管理
教师：个人信息、成绩、选课管理、教室查看
学生：个人信息、成绩查看、选课和查看
eclipse或MyEclipse或idea
管理员
学生
教师
