目录
一、系统介绍
1.运行环境
开发工具：Eclipse/IDEA
JDK版本：jdk1.8
Mysql版本：5.7
2.技术说明
Java+Swing+Mysql
3.系统功能
主要功能包括 1.管理学生信息，其中包括添加，删除，修改等操作。2.管理课程信息，其中包括添加，删除，修改等操作。3.管理选课信息，其中包括添加，删除，修改等操作。4.查询信息，其中包括查询学生信息，查询课程信息，查询选课信息等操作
4.数据库实体E-R图设计
学生管理实体E-R图
课程管理实体E-R图
选课管理实体E-R图
5.数据库表的设计
数据库名：user
管理员表（user）
| 列名 |
数据类型 |
长度 |
是否为空 |
| uno |
int |
11 |
否 |
| name |
varchar |
10 |
否 |
| password |
varchar |
10 |
否 |
数据库名：stu
学生表（stu）
| 列名 |
数据类型 |
长度 |
是否为空 |
| sno |
Int |
11 |
否 |
| name |
varchar |
10 |
否 |
| sex |
varchar |
10 |
否 |
| age |
int |
10 |
是 |
| sdept |
varchar |
10 |
是 |
数据库名：course
课程表（course）
| 列名 |
数据类型 |
长度 |
是否为空 |
| cno |
char |
4 |
否 |
| cname |
varchar |
10 |
否 |
| credit |
Int |
10 |
是 |
数据库名：sc
选课表（sc）
| 列名 |
数据类型 |
长度 |
是否为空 |
| sno |
char |
11 |
否 |
| cno |
char |
4 |
否 |
| score |
Int |
10 |
是 |
二、系统实现
根据需求分析阶段得到的功能需求，可将系统功能大概分为六个模块：这几个模块用户登录、学生管理、课程管理、选课管理、查询管理、系统退出
系统数据流程图
1.用户登录
public void actionPerformed(ActionEvent e) {
if (e.getActionCommand().equals("登录")) {
try {
DBUtil.initst();
String stuname=nameField.getText();
String stupwd=passwordField.getText();
//根据数据库表中的用户名查密码进行匹配
DBUtil.rs=DBUtil.st.executeQuery("select password from user where name='"+stuname+"'");
if (DBUtil.rs.next()) {
if (DBUtil.rs.getString(1).equals(stupwd)) {
//如果密码正确就显示主页面
this.hide();
new Main().show();
} else {
//如果密码错误弹出框
JOptionPane.showMessageDialog(null, "密码错误，请联系管理员");}
}else {
//姓名不对弹出提示框
JOptionPane.showMessageDialog(null, "用户不存在");
}
DBUtil.closeDB();
} catch (SQLException ex) {
ex.printStackTrace();
}
}else {System.exit(0)} }
2.主界面
主界面主要是用于对选择相应的功能进行相应的功能，主界面主要包括学生管理、课程管理、选课管理、数据查询、系统退出五大功能。 主界面添加JMenuBar菜单条，和JMenu菜单，和JMenuItem菜单项。三个菜单包括：学生管理、课程管理、选课管理和数据查询。学生管理中包括：增加学生、修改学生、删除学生。课程管理中包括：增加课程、修改课程、删除课程。选课管理中包括：增加选课、修改选课、删除选课。数据查询主要包括学生查询、课程查询、选课查询。还有一个单独的系统退出。
重要代码：
// 学生表
JTable jTable = new JTable();
jTable.setModel(userModel);
JScrollPane jScrollPane = new JScrollPane();
jScrollPane.setViewportView(jTable);
add(jScrollPane, BorderLayout.CENTER);
// 菜单栏
JMenuBar menuBar = new JMenuBar();
setJMenuBar(menuBar);
// 学生信息菜单栏
JMenu user = new JMenu(" 学生管理 ");
menuBar.add(user);
JMenuItem addstu = new JMenuItem("增加学生");
JMenuItem updatestu = new JMenuItem("修改学生");
JMenuItem deletestu = new JMenuItem("删除学生");
user.add(addstu);
user.add(updatestu);
user.add(deletestu);
// 系统退出
JLabel exit = new JLabel(" 系统退出");
exit.setForeground(Color.red);
exit.setFont(new java.awt.Font("宋体", 1, 15));
menuBar.add(exit);
// 查询区
JPanel jPaneln = new JPanel();
JLabel nameJLabel = new JLabel("学号/课程号：");
JTextField nameField = new JTextField(20);
JButton selectbtn = new JButton("查询");
jPaneln.add(nameJLabel);
jPaneln.add(nameField);
jPaneln.add(selectbtn);
add(jPaneln, BorderLayout.NORTH);
// 查询学号/课程号按钮
selectbtn.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
String stu = nameField.getText();
String sql = "select * from stu where sno='" + stu + "'";
userModel.reload(sql);
String sql1 = "select * from course where cno='" + stu + "'";
coursemodel.reload(sql1);
String sql2 = "SELECT sc.sno,stu.name,sc.cno,course.cname,credit,score FROM sc,stu,course where sc.sno=stu.sno and course.cno=sc.cno and sc.sno='"+ stu + "'";
selectsmodel.reload(sql2);}});
3.数据库连接
学生、课程以及成绩的增删改查都是建立在连接数据库的基础之上，在MySQL里建立用户管理员表、学生表、课程表、选课表等。建立JDBC数据源的连接。
连接数据库重要代码：
public class DBUtil {
static Connection con;
public static Statement st;
static PreparedStatement ps;
public static ResultSet rs;
static String url="jdbc:mysql://localhost:3306/studb?useUnicode=true&characterEncoding=UTF-8";
static String name="root";
static String pwd="123456";
public static void initst() {
try {
Class.forName("com.mysql.jdbc.Driver");
con=DriverManager.getConnection(url,name,pwd);
st=con.createStatement();
} catch (SQLException e) {
e.printStackTrace();
}catch (ClassNotFoundException e) {
e.printStackTrace();
}
}
public static void initps(String sql) {
try {
Class.forName("com.mysql.jdbc.Driver");
con=DriverManager.getConnection(url,name,pwd);
ps=con.prepareStatement(sql);
rs= ps.executeQuery();
} catch (SQLException e) {
e.printStackTrace();
}catch (ClassNotFoundException e) {
e.printStackTrace();
}
}
public static void closeDB() {
try {
if (rs!=null) {
rs.close();
}
if (ps!=null) {
ps.close();
}
if (st!=null) {
st.close();
}
if (con!=null) {
con.close();
}
} catch (Exception e) {
// TODO: handle exception
e.printStackTrace();
4.数据查询
5.查询课程信息
重要代码:
/*
* 查询管理
*/
// 查询所有学生信息
querystu.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
// 刷新jTable并把jTable显示出来
userModel.reload(null);
jTable.setModel(userModel);
}
});
// 查询所有课程信息
querycourse.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
// 刷新jTable并把jTable显示出来
coursemodel.reload(null);
jTable.setModel(coursemodel);
}
});
// 查询所有学生选课信息
queryselect.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
// 刷新jTable并把jTable显示出来
selectsmodel.reload(null);
jTable.setModel(selectsmodel);
}
});
6.添加学生信息
添加学生信息主要代码：
public void actionPerformed(ActionEvent e) {
if (e.getActionCommand().equals("确定")) {
try {
DBUtil.initst();
String sno=snoField.getText();
String stuname=nameField.getText();
String sex=sexField.getText();
String age=ageField.getText();
String sdept=sdeptField.getText();
int n=DBUtil.st.executeUpdate("insert into stu values('"+sno+"','"+stuname+"','"+sex+"','"+age+"','"+sdept+"')");
if (n>0) {
JOptionPane.showMessageDialog(null, "添加成功");
} else {
JOptionPane.showMessageDialog(null, "添加失败");
}
DBUtil.closeDB();
} catch (SQLException ex) {
ex.printStackTrace();
}
DBUtil.closeDB();
}else {
this.hide();
UserModel.reload(null);
}
}
7.修改学生信息
这部分的主要功能是更改数据库中学生的基本信息。查询出学生表，点击表中的某一行进行选中，再点击学生信息菜单栏的修改学生信息就可以进行修改
修改学生信息：
三、部分代码
1.ChangePwd.java
package body;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.sql.SQLException;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPasswordField;
import javax.swing.JTextField;
public class ChangePwd extends JFrame implements ActionListener {
JTextField nameField;
JPasswordField passwordField;
public ChangePwd() {
setTitle("修改密码");
setLayout(null);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(500,200,350,300);
JLabel nameJLabel=new JLabel("账号");
nameField=new JTextField();
JLabel passJLabel=new JLabel("密码");
passwordField=new JPasswordField();
nameJLabel.setBounds(50,15,100,100);
nameField.setBounds(100,50,200,30);
passJLabel.setBounds(50,70,100,100);
passwordField.setBounds(100,100,200,30);
JButton loginButton=new JButton("确定");
JButton cancelButton=new JButton("取消");
loginButton.setBounds(100,150,80,30);
cancelButton.setBounds(200,150,80,30);
add(nameJLabel);
add(nameField);
add(passJLabel);
add(passwordField);
add(loginButton);
add(cancelButton);
loginButton.setActionCommand("登录");
cancelButton.setActionCommand("取消");
loginButton.addActionListener(this);
cancelButton.addActionListener(this);
setVisible(true);
}
@Override
public void actionPerformed(ActionEvent e) {
if (e.getActionCommand().equals("登录")) {
try {
DBUtil.initst();
String stuname=nameField.getText();
String stupwd=passwordField.getText();
int n=DBUtil.st.executeUpdate("update user set password='"+stupwd+"' where name='"+stuname+"'");
if (n>0) {
JOptionPane.showMessageDialog(null, "修改成功");
} else {
JOptionPane.showMessageDialog(null, "修改失败");
}
DBUtil.closeDB();
} catch (SQLException ex) {
ex.printStackTrace();
}
}else {
this.hide();
new Login().show();
}
}
public static void main(String[] args) {
ChangePwd changePwd=new ChangePwd();
}
}
2.Login.java
package body;
import java.awt.Graphics;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.sql.SQLException;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JPasswordField;
import javax.swing.JTextField;
public class Login extends JFrame implements ActionListener {
JTextField nameField;
JPasswordField passwordField;
public Login() {
JPanel panel = new ImagePanel();
add(panel);
panel.setLayout(null);
setTitle("系统登录");
setLayout(null);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(500,200,350,300);
//添加账号密码文本及文本框
JLabel nameJLabel=new JLabel("账号");
nameField=new JTextField();
JLabel passJLabel=new JLabel("密码");
passwordField=new JPasswordField();
nameJLabel.setBounds(50,15,100,100);
nameField.setBounds(100,50,200,30);
passJLabel.setBounds(50,70,100,100);
passwordField.setBounds(100,100,200,30);
//登录取消按钮
JButton loginButton=new JButton("登录");
JButton cancelButton=new JButton("取消");
loginButton.setBounds(50,150,80,30);
cancelButton.setBounds(220,150,80,30);
//添加到面版
add(nameJLabel);
add(nameField);
add(passJLabel);
add(passwordField);
add(loginButton);
add(cancelButton);
//给登录取消按钮添加控件
loginButton.setActionCommand("登录");
cancelButton.setActionCommand("取消");
loginButton.addActionListener(this);
cancelButton.addActionListener(this);
setVisible(true);
}
@Override
public void actionPerformed(ActionEvent e) {
if (e.getActionCommand().equals("登录")) {
try {
DBUtil.initst();
String stuname=nameField.getText();
String stupwd=passwordField.getText();
//根据数据库表中的用户名查密码进行匹配
DBUtil.rs=DBUtil.st.executeQuery("select password from user where name='"+stuname+"'");
if (DBUtil.rs.next()) {
if (DBUtil.rs.getString(1).equals(stupwd)) {
//如果密码正确就显示主页面
this.hide();
new Main().show();
} else {
//如果密码错误弹出框
JOptionPane.showMessageDialog(null, "密码错误，请联系管理员");
}
}else {
//姓名不对弹出提示框
JOptionPane.showMessageDialog(null, "用户不存在");
}
DBUtil.closeDB();
} catch (SQLException ex) {
ex.printStackTrace();
}
}else {
System.exit(0);
}
}
class ImagePanel extends JPanel {
protected void paintComponent(Graphics g) {
super.paintComponent(g);
ImageIcon icon = new ImageIcon("icon/1.jpg");
g.drawImage(icon.getImage(), 0, 0, null);
}
}
public static void main(String[] args) {
Login login=new Login();
}
}
3.Main.java
package body;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.sql.SQLException;
import java.util.Vector;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JTextField;
import course.AddCourse;
import course.CourseModel;
import course.UpdateCourse;
import selects.AddSelect;
import selects.SelectsModel;
import selects.UpdateSelect;
import stu.AddStu;
import stu.UpdateStu;
import stu.UserModel;
public class Main extends JFrame {
public static UserModel userModel;
public static CourseModel coursemodel;
public static SelectsModel selectsmodel;
JTextField exit;
public Main() {
setTitle("学生选课管理系统");
setBounds(300, 100, 1000, 800);
String sql = "select * from stu";
userModel = new UserModel();
userModel.init(sql);
String sql1 = "select * from course";
coursemodel = new CourseModel();
coursemodel.init(sql1);
String sql2 = "SELECT sc.sno,stu.name,sc.cno,course.cname,credit,score FROM sc,stu,course where sc.sno=stu.sno and course.cno=sc.cno";
selectsmodel = new SelectsModel();
selectsmodel.init(sql2);
// 学生表
JTable jTable = new JTable();
jTable.setModel(userModel);
JScrollPane jScrollPane = new JScrollPane();
jScrollPane.setViewportView(jTable);
add(jScrollPane, BorderLayout.CENTER);
// 菜单栏
JMenuBar menuBar = new JMenuBar();
setJMenuBar(menuBar);
// 学生信息菜单栏
JMenu user = new JMenu(" 学生管理 ");
menuBar.add(user);
JMenuItem addstu = new JMenuItem("增加学生");
JMenuItem updatestu = new JMenuItem("修改学生");
JMenuItem deletestu = new JMenuItem("删除学生");
user.add(addstu);
user.add(updatestu);
user.add(deletestu);
// 课程管理菜单栏
JMenu course = new JMenu(" 课程管理 ");
menuBar.add(course);
JMenuItem addcourse = new JMenuItem("增加课程");
JMenuItem updatecourse = new JMenuItem("修改课程");
JMenuItem deletecourse = new JMenuItem("删除课程");
course.add(addcourse);
course.add(updatecourse);
course.add(deletecourse);
// 选课管理菜单栏
JMenu select = new JMenu(" 选课管理 ");
menuBar.add(select);
JMenuItem addselect = new JMenuItem("添加选课");
JMenuItem updateselect = new JMenuItem("修改选课");
JMenuItem deleteselect = new JMenuItem("删除选课");
select.add(addselect);
select.add(updateselect);
select.add(deleteselect);
// 查询管理菜单栏
JMenu query = new JMenu(" 查询管理 ");
menuBar.add(query);
JMenuItem querystu = new JMenuItem("查询所有学生");
JMenuItem querycourse = new JMenuItem("查询所有课程");
JMenuItem queryselect = new JMenuItem("查询所有选课");
query.add(querystu);
query.add(querycourse);
query.add(queryselect);
// 系统退出
JLabel exit = new JLabel(" 系统退出");
exit.setForeground(Color.red);
exit.setFont(new java.awt.Font("宋体", 1, 15));
menuBar.add(exit);
// 查询区
JPanel jPaneln = new JPanel();
JLabel nameJLabel = new JLabel("学号/课程号：");
JTextField nameField = new JTextField(20);
JButton selectbtn = new JButton("查询");
jPaneln.add(nameJLabel);
jPaneln.add(nameField);
jPaneln.add(selectbtn);
add(jPaneln, BorderLayout.NORTH);
// 查询学号/课程号按钮
selectbtn.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
String stu = nameField.getText();
String sql = "select * from stu where sno='" + stu + "'";
userModel.reload(sql);
String sql1 = "select * from course where cno='" + stu + "'";
coursemodel.reload(sql1);
String sql2 = "SELECT sc.sno,stu.name,sc.cno,course.cname,credit,score FROM sc,stu,course where sc.sno=stu.sno and course.cno=sc.cno and sc.sno='"
+ stu + "'";
selectsmodel.reload(sql2);
}
});
/*
* 学生管理
*/
// 增加学生信息
addstu.addMouseListener(new MouseListener() {
@Override
public void mouseReleased(MouseEvent e) {
// TODO Auto-generated method stub
}
@Override
public void mousePressed(MouseEvent e) {
// TODO Auto-generated method stub
new AddStu().show();
}
@Override
public void mouseExited(MouseEvent e) {
// TODO Auto-generated method stub
}
@Override
public void mouseEntered(MouseEvent e) {
// TODO Auto-generated method stub
}
@Override
public void mouseClicked(MouseEvent e) {
// TODO Auto-generated method stub
}
});
// 删除学生信息
deletestu.addMouseListener(new MouseListener() {
@Override
public void mouseReleased(MouseEvent e) {
// TODO Auto-generated method stub
}
@Override
public void mousePressed(MouseEvent e) {
// TODO Auto-generated method stub
int index = jTable.getSelectedRow();
if (index == -1) {
JOptionPane.showMessageDialog(null, "未选中");
} else {
Object user = userModel.rowData.get(index);
String sno = ((Vector) user).get(0).toString();
try {
DBUtil.initst();
int n = DBUtil.st.executeUpdate("delete from stu where sno='" + sno + "'");
if (n > 0) {
JOptionPane.showMessageDialog(null, "删除成功");
} else {
JOptionPane.showMessageDialog(null, "删除失败");
}
UserModel.reload(null);
DBUtil.closeDB();
} catch (SQLException ex) {
ex.printStackTrace();
}
}
}
@Override
public void mouseExited(MouseEvent e) {
// TODO Auto-generated method stub
}
@Override
public void mouseEntered(MouseEvent e) {
// TODO Auto-generated method stub
}
@Override
public void mouseClicked(MouseEvent e) {
// TODO Auto-generated method stub
}
});
// 修改学生信息
updatestu.addMouseListener(new MouseListener() {
@Override
public void mouseReleased(MouseEvent e) {
// TODO Auto-generated method stub
}
@Override
public void mousePressed(MouseEvent e) {
// TODO Auto-generated method stub
int index = jTable.getSelectedRow();
if (index == -1) {
JOptionPane.showMessageDialog(null, "未选中");
} else {
Object user = userModel.rowData.get(index);
new UpdateStu(user).show();
}
}
@Override
public void mouseExited(MouseEvent e) {
// TODO Auto-generated method stub
}
@Override
public void mouseEntered(MouseEvent e) {
// TODO Auto-generated method stub
}
@Override
public void mouseClicked(MouseEvent e) {
// TODO Auto-generated method stub
}
});
/*
* 课程管理
*/
// 增加课程信息
addcourse.addMouseListener(new MouseListener() {
@Override
public void mouseReleased(MouseEvent e) {
// TODO Auto-generated method stub
}
@Override
public void mousePressed(MouseEvent e) {
// TODO Auto-generated method stub
new AddCourse().show();
}
@Override
public void mouseExited(MouseEvent e) {
// TODO Auto-generated method stub
}
@Override
public void mouseEntered(MouseEvent e) {
// TODO Auto-generated method stub
}
@Override
public void mouseClicked(MouseEvent e) {
// TODO Auto-generated method stub
}
});
// 删除课程信息
deletecourse.addMouseListener(new MouseListener() {
@Override
public void mouseReleased(MouseEvent e) {
// TODO Auto-generated method stub
}
@Override
public void mousePressed(MouseEvent e) {
// TODO Auto-generated method stub
int index = jTable.getSelectedRow();
if (index == -1) {
JOptionPane.showMessageDialog(null, "未选中");
} else {
Object course = coursemodel.rowData1.get(index);
String cno = ((Vector) course).get(0).toString();
try {
DBUtil.initst();
int n = DBUtil.st.executeUpdate("delete from course where cno='" + cno + "'");
if (n > 0) {
JOptionPane.showMessageDialog(null, "删除成功");
} else {
JOptionPane.showMessageDialog(null, "删除失败");
}
CourseModel.reload(null);
DBUtil.closeDB();
} catch (SQLException ex) {
ex.printStackTrace();
}
}
}
@Override
public void mouseExited(MouseEvent e) {
// TODO Auto-generated method stub
}
@Override
public void mouseEntered(MouseEvent e) {
// TODO Auto-generated method stub
}
@Override
public void mouseClicked(MouseEvent e) {
// TODO Auto-generated method stub
}
});
// 修改课程信息
updatecourse.addMouseListener(new MouseListener() {
@Override
public void mouseReleased(MouseEvent e) {
// TODO Auto-generated method stub
}
@Override
public void mousePressed(MouseEvent e) {
// TODO Auto-generated method stub
int index = jTable.getSelectedRow();
if (index == -1) {
JOptionPane.showMessageDialog(null, "未选中");
} else {
Object course = coursemodel.rowData1.get(index);
new UpdateCourse(course).show();
}
}
@Override
public void mouseExited(MouseEvent e) {
// TODO Auto-generated method stub
}
@Override
public void mouseEntered(MouseEvent e) {
// TODO Auto-generated method stub
}
@Override
public void mouseClicked(MouseEvent e) {
// TODO Auto-generated method stub
}
});
/*
* 学生选课管理
*/
// 增加学生选课信息
addselect.addMouseListener(new MouseListener() {
@Override
public void mouseReleased(MouseEvent e) {
// TODO Auto-generated method stub
}
@Override
public void mousePressed(MouseEvent e) {
// TODO Auto-generated method stub
new AddSelect().show();
}
@Override
public void mouseExited(MouseEvent e) {
// TODO Auto-generated method stub
}
@Override
public void mouseEntered(MouseEvent e) {
// TODO Auto-generated method stub
}
@Override
public void mouseClicked(MouseEvent e) {
// TODO Auto-generated method stub
}
});
// 删除学生选课信息
deleteselect.addMouseListener(new MouseListener() {
@Override
public void mouseReleased(MouseEvent e) {
// TODO Auto-generated method stub
}
@Override
public void mousePressed(MouseEvent e) {
// TODO Auto-generated method stub
int index = jTable.getSelectedRow();
if (index == -1) {
JOptionPane.showMessageDialog(null, "未选中");
} else {
Object select = selectsmodel.rowData2.get(index);
String sno = ((Vector) select).get(0).toString();
try {
DBUtil.initst();
int n = DBUtil.st.executeUpdate("delete from sc where sno='" + sno + "'");
if (n > 0) {
JOptionPane.showMessageDialog(null, "删除成功");
} else {
JOptionPane.showMessageDialog(null, "删除失败");
}
SelectsModel.reload(null);
DBUtil.closeDB();
} catch (SQLException ex) {
ex.printStackTrace();
}
}
}
@Override
public void mouseExited(MouseEvent e) {
// TODO Auto-generated method stub
}
@Override
public void mouseEntered(MouseEvent e) {
// TODO Auto-generated method stub
}
@Override
public void mouseClicked(MouseEvent e) {
// TODO Auto-generated method stub
}
});
// 修改学生选课信息
updateselect.addMouseListener(new MouseListener() {
@Override
public void mouseReleased(MouseEvent e) {
// TODO Auto-generated method stub
}
@Override
public void mousePressed(MouseEvent e) {
// TODO Auto-generated method stub
int index = jTable.getSelectedRow();
if (index == -1) {
JOptionPane.showMessageDialog(null, "未选中");
} else {
Object select = selectsmodel.rowData2.get(index);
new UpdateSelect(select).show();
}
}
@Override
public void mouseExited(MouseEvent e) {
// TODO Auto-generated method stub
}
@Override
public void mouseEntered(MouseEvent e) {
// TODO Auto-generated method stub
}
@Override
public void mouseClicked(MouseEvent e) {
// TODO Auto-generated method stub
}
});
/*
* 查询管理
*/
// 查询所有学生信息
querystu.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
// 刷新jTable并把jTable显示出来
userModel.reload(null);
jTable.setModel(userModel);
}
});
// 查询所有课程信息
querycourse.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
// 刷新jTable并把jTable显示出来
coursemodel.reload(null);
// jTable.show();
jTable.setModel(coursemodel);
}
});
// 查询所有学生选课信息
queryselect.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
// 刷新jTable并把jTable显示出来
selectsmodel.reload(null);
// jTable.show();
jTable.setModel(selectsmodel);
}
});
/*
* 系统退出
*/
exit.addMouseListener(new MouseListener() {
public void mouseClicked(MouseEvent e) {
System.exit(0);
// 处理鼠标点击
}
public void mouseEntered(MouseEvent e) {
// 处理鼠标移入
}
public void mouseExited(MouseEvent e) {
// 处理鼠标离开
}
public void mousePressed(MouseEvent e) {
// 处理鼠标按下
}
public void mouseReleased(MouseEvent e) {
// 处理鼠标释放
}
});
setVisible(true);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
public static void main(String[] args) {
Main main = new Main();
}
}
5.备注
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