在大学的选课和授课活动中，学生有自己的个人信息，还有课程和成绩，老师除了个人信息还有课程和上课地点，学生成绩，而课程除了课程号、课程名之外还有学分，对于教师、学生和课程之间的关系可以借助我们的课程成绩管理系统来管理。
我们的系统开发的是面对学生、教师、系统管理员三类对象的教务平台，
学生可以登录、修改密码、选课、查看已选课程成绩，选课总数不能超过3门；
教师可以登录、修改密码、查看所授课程的学生、录入成绩；
系统管理员可以增加学生、教师账号，删除学生、教师账号。
于是就模仿修改了例子，下面是代码：
AdmPanel :
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.table.DefaultTableModel;
import java.sql.*;
import java.util.Vector;
public class AdmPanel extends JPanel implements ActionListener,ItemListener,MouseListener
{
JButton b1,b2,b3,b4,b5,b6;
JPanel p1,p2,pCenter;
CardLayout card=null;
JTextField t1=new JTextField(10),
t2=new JTextField(10),
t3=new JTextField(10),
tt1=new JTextField(10),
tt2=new JTextField(10),
tt3=new JTextField(10);
ButtonGroup sex1=new ButtonGroup(),
sex2=new ButtonGroup();
JRadioButton radio1=new JRadioButton("男",true),
radio2=new JRadioButton("女");
JRadioButton r1=new JRadioButton("男",true),
r2=new JRadioButton("女");
JComboBox year,month,date,yy,mm,dd,post;
JTable table1,table2;
Vector vectorColName1=new Vector(),
vectorColName2=new Vector();
Vector vector1=new Vector(),
vector2=new Vector();
DefaultTableModel model1=new DefaultTableModel(vectorColName1,0){
public boolean isCellEditable(int row, int column)
{
return false;
}
};
DefaultTableModel model2=new DefaultTableModel(vectorColName2,0){
public boolean isCellEditable(int row, int column)
{
return false;
}
};
AdmPanel()
{
setLayout(new BorderLayout());
t1=new JTextField(10);
t2=new JTextField(10);
t3=new JTextField(10);
tt1=new JTextField(10);
tt2=new JTextField(10);
tt3=new JTextField(10);
sex1.add(radio1);
sex1.add(radio2);
sex2.add(r1);
sex2.add(r2);
year=new JComboBox();
month=new JComboBox();
date=new JComboBox();
yy=new JComboBox();
mm=new JComboBox();
dd=new JComboBox();
post=new JComboBox();
post.addItem("助教");
post.addItem("讲师");
post.addItem("副教授");
post.addItem("教授");
for(int i=1980;i<1995;i++)
year.addItem(i);
for(int i=1;i<=12;i++)
month.addItem(i);
for(int i=1;i<=31;i++)
date.addItem(i);
for(int i=1950;i<1995;i++)
yy.addItem(i);
for(int i=1;i<=12;i++)
mm.addItem(i);
for(int i=1;i<=31;i++)
dd.addItem(i);
year.addItemListener(this);
month.addItemListener(this);
yy.addItemListener(this);
mm.addItemListener(this);
post.addItemListener(this);
b1=new JButton("学生信息管理");
b2=new JButton("教师信息管理");
b3=new JButton("输入");
b4=new JButton("删除");
b5=new JButton("输入");
b6=new JButton("删除");
b1.addActionListener(this);
b2.addActionListener(this);
b3.addActionListener(this);
b4.addActionListener(this);
b5.addActionListener(this);
b6.addActionListener(this);
JPanel p0=new JPanel();
p0.add(b1);
p0.add(b2);
pCenter=new JPanel();
card=new CardLayout();
pCenter.setLayout(card);
p1=createStuPanel();
p2=createTeaPanel();
pCenter.add("学生信息管理",p1);
pCenter.add("教师信息管理",p2);
add(p0,BorderLayout.NORTH);
add(pCenter,BorderLayout.CENTER);
}
private JPanel createStuPanel()
{
JPanel p=new JPanel();
JScrollPane p1;
JPanel p2=new JPanel();
p.setLayout(new GridLayout(2,1));
SqlManager DBm=SqlManager.createInstance();//单态模式获取实例
DBm.connectDB();
String sql="exec ProcAllStu";
ResultSet rs=DBm.executeQuery(sql);
vectorColName1.addElement("学号");
vectorColName1.addElement("姓名");
vectorColName1.addElement("性别");
vectorColName1.addElement("生日");
vectorColName1.addElement("班级");
model1.setDataVector(vector1,vectorColName1);
table1=new JTable(model1);
table1.addMouseListener(this);
p1=new JScrollPane(table1);
p.add(p1);
try{
while(rs.next()){
Vector rec_vector=new Vector();//从结果集中取数据放入向量rec_vector中
rec_vector.addElement(rs.getString(1));
rec_vector.addElement(rs.getString(2));
rec_vector.addElement(rs.getString(3));
rec_vector.addElement(rs.getString(4));
rec_vector.addElement(rs.getString(5));
vector1.addElement(rec_vector);//向量rec_vector加入向量vect中
}
//tm.fireTableStructureChanged();//更新表格，显示向量vect的内容
rs.close();
}catch(SQLException e){
e.printStackTrace();
}
DBm.closeDB();
//构造p2
Box base=Box.createHorizontalBox(),
boxleft=Box.createVerticalBox(),
boxright=Box.createVerticalBox();
JPanel pp1=new JPanel(),
pp2=new JPanel(),
pp3=new JPanel(),
pp4=new JPanel(),
pp5=new JPanel(),
pp6=new JPanel(),
psex=new JPanel(),
pbirth=new JPanel();
psex.add(radio1);
psex.add(radio2);
pbirth.add(year);
pbirth.add(month);
pbirth.add(date);
pp1.add(new JLabel("学生编号："));
pp1.add(t1);
pp2.add(new JLabel("学生姓名："));
pp2.add(t2);
pp3.add(new JLabel("学生性别："));
pp3.add(psex);
pp4.add(new JLabel("学生生日："));
pp4.add(pbirth);
pp5.add(new JLabel("所在班级："));
pp5.add(t3);
pp6.add(b3);
pp6.add(b4);
boxleft.add(Box.createVerticalStrut(30));
boxleft.add(pp1);
boxleft.add(Box.createVerticalStrut(20));
boxleft.add(pp2);
boxleft.add(Box.createVerticalStrut(20));
boxleft.add(pp3);
boxright.add(Box.createVerticalStrut(20));
boxright.add(pp4);
boxright.add(Box.createVerticalStrut(20));
boxright.add(pp5);
boxright.add(Box.createVerticalStrut(20));
boxright.add(pp6);
base.add(boxleft);
base.add(Box.createHorizontalStrut(80));
base.add(boxright);
p2.add(base);
p.add(p2);
return p;
}
private JPanel createTeaPanel()
{
JPanel p=new JPanel();
JScrollPane p1;
JPanel p2=new JPanel();
p.setLayout(new GridLayout(2,1));
SqlManager DBm=SqlManager.createInstance();//单态模式获取实例
DBm.connectDB();
String sql="exec ProcAllTea";
ResultSet rs=DBm.executeQuery(sql);
vectorColName2.addElement("教师编号");
vectorColName2.addElement("教师姓名");
vectorColName2.addElement("教师性别");
vectorColName2.addElement("生日");
vectorColName2.addElement("职称");
vectorColName2.addElement("所在院系");
model2.setDataVector(vector2,vectorColName2);
table2=new JTable(model2);
table2.addMouseListener(this);
p1=new JScrollPane(table2);
p.add(p1);
try{
while(rs.next()){
Vector rec_vector=new Vector();//从结果集中取数据放入向量rec_vector中
rec_vector.addElement(rs.getString(1));
rec_vector.addElement(rs.getString(2));
rec_vector.addElement(rs.getString(3));
rec_vector.addElement(rs.getString(4));
rec_vector.addElement(rs.getString(5));
rec_vector.addElement(rs.getString(6));
vector2.addElement(rec_vector);//向量rec_vector加入向量vect中
}
//tm.fireTableStructureChanged();//更新表格，显示向量vect的内容
rs.close();
}catch(SQLException e){
e.printStackTrace();
}
DBm.closeDB();
//构造p2
Box base=Box.createHorizontalBox(),
boxleft=Box.createVerticalBox(),
boxright=Box.createVerticalBox();
JPanel pp1=new JPanel(),
pp2=new JPanel(),
pp3=new JPanel(),
pp4=new JPanel(),
pp5=new JPanel(),
pp6=new JPanel(),
pp7=new JPanel(),
psex=new JPanel(),
pbirth=new JPanel();
psex.add(r1);
psex.add(r2);
pbirth.add(yy);
pbirth.add(mm);
pbirth.add(dd);
pp1.add(new JLabel("教职工号："));
pp1.add(tt1);
pp2.add(new JLabel("教师姓名："));
pp2.add(tt2);
pp3.add(new JLabel("教师性别："));
pp3.add(psex);
pp4.add(new JLabel("教师生日："));
pp4.add(pbirth);
pp5.add(new JLabel("教师职称："));
pp5.add(post);
pp6.add(new JLabel("所在院系："));
pp6.add(tt3);
pp7.add(b5);
pp7.add(b6);
boxleft.add(Box.createVerticalStrut(40));
boxleft.add(pp1);
boxleft.add(Box.createVerticalStrut(20));
boxleft.add(pp2);
boxleft.add(Box.createVerticalStrut(20));
boxleft.add(pp3);
boxright.add(Box.createVerticalStrut(30));
boxright.add(pp4);
boxright.add(Box.createVerticalStrut(10));
boxright.add(pp5);
boxright.add(Box.createVerticalStrut(10));
boxright.add(pp6);
boxright.add(pp7);
base.add(boxleft);
base.add(Box.createHorizontalStrut(80));
base.add(boxright);
p2.add(base);
p.add(p2);
return p;
}
public void actionPerformed(ActionEvent e)
{
if(e.getSource()==b1)
{
card.show(pCenter, "学生信息管理");
}
else if(e.getSource()==b2)
{
card.show(pCenter, "教师信息管理");
}
if(e.getSource()==b3)
{
String userid=t1.getText(),
username=t2.getText(),
classs=t3.getText();
String sex="男";
if(radio2.isSelected())
{
sex="女";
}
String birth=String.valueOf((Integer)year.getSelectedItem())+"-"
+String.valueOf((Integer)month.getSelectedItem())
+"-"+String.valueOf((Integer)date.getSelectedItem());
String sql="exec InsertStudent'"+userid+"','"+username+"','"+sex+"','"+birth+"','"+classs+"'";
String s="exec IsExistsStu'"+userid+"'";
String inserlog="exec InsertLogon'"+userid+"'";
System.out.println(sql);
SqlManager DBm=SqlManager.createInstance();//单态模式获取实例
DBm.connectDB();
ResultSet rset=DBm.executeQuery(s);
System.out.println(s);
try{
if (rset.next())
{
JOptionPane.showMessageDialog(this,"学生信息插入失败，该学生ID号已存在",
"警告",JOptionPane.WARNING_MESSAGE);
rset.close();
}
else{
ResultSet rs=DBm.executeQuery(sql);
if(rs.next())
{
JOptionPane.showMessageDialog(this,"学生信息插入成功",
"成功",JOptionPane.WARNING_MESSAGE);
DBm.connectDB();
DBm.executeUpdate(inserlog);
t1.setText("S");
t2.setText(null);
t3.setText(null);
radio1.setSelected(true);
//this.post.setSelectedIndex(0);
year.setSelectedIndex(0);
month.setSelectedIndex(0);
date.setSelectedIndex(0);
//sql="select * from Inserted";
//ResultSet rs=DBm.executeQuery(sql);
Vector rec_vector=new Vector();//从结果集中取数据放入向量rec_vector中
rec_vector.addElement(rs.getString(1));
rec_vector.addElement(rs.getString(2));
rec_vector.addElement(rs.getString(3));
rec_vector.addElement(rs.getString(4));
rec_vector.addElement(rs.getString(5));
vector1.addElement(rec_vector);//向量rec_vector加入向量vect中
model1.fireTableStructureChanged();//更新表格，显示向量vect的内容
rs.close();
}
else{
JOptionPane.showMessageDialog(this,"学生信息插入失败",
"警告",JOptionPane.WARNING_MESSAGE);
rs.close();
}
}
}catch(SQLException ex){
ex.printStackTrace();
}
DBm.closeDB();
}
if(e.getSource()==b4)
{
//同步删除数据库中的数据
int selectrow = 0;
selectrow =table1.getSelectedRow();
String id =table1.getValueAt(selectrow,0).toString();
String sql="exec DeleteStudent'"+id+"'";
String deletelog="exec DeleteLogon'"+id+"'";
SqlManager DBm=SqlManager.createInstance();//单态模式获取实例
DBm.connectDB();
if(DBm.executeUpdate(sql)==1)
{
JOptionPane.showMessageDialog(this,"学生信息已删除",
"删除成功",JOptionPane.INFORMATION_MESSAGE);
DBm.connectDB();
DBm.executeUpdate(deletelog);
model1.removeRow(selectrow);
t1.setText("S");
t2.setText(null);
t3.setText(null);
radio1.setSelected(true);
year.setSelectedIndex(0);
month.setSelectedIndex(0);
date.setSelectedIndex(0);
}
DBm.closeDB();
}
if(e.getSource()==b5)
{
String userid=tt1.getText(),
username=tt2.getText(),
depart=tt3.getText(),
post=(String)this.post.getSelectedItem();
String sex="男";
if(r2.isSelected())
{
sex="女";
}
String birth=String.valueOf((Integer)yy.getSelectedItem())+"-"+String.valueOf((Integer)mm.getSelectedItem())
+"-"+String.valueOf((Integer)dd.getSelectedItem());
String sql="exec InsertTeacher'"+userid+"','"+username+"','"+sex+"','"+birth+"','"+post+"','"+depart+"'";
String s="exec IsExistsTea'"+userid+"'";
String insertlog="exec InsertLogon'"+userid+"'";
System.out.println(sql);
SqlManager DBm=SqlManager.createInstance();//单态模式获取实例
DBm.connectDB();
ResultSet rset=DBm.executeQuery(s);
System.out.println(s);
try{
if (rset.next())
{
JOptionPane.showMessageDialog(this,"教师信息插入失败，该教师ID号已存在",
"警告",JOptionPane.WARNING_MESSAGE);
rset.close();
}
else{
ResultSet rs=DBm.executeQuery(sql);
if(rs.next())
{
JOptionPane.showMessageDialog(this,"教师信息插入成功",
"成功",JOptionPane.WARNING_MESSAGE);
DBm.connectDB();
DBm.executeUpdate(insertlog);
tt1.setText("T");
tt2.setText(null);
tt3.setText(null);
r1.setSelected(true);
this.post.setSelectedIndex(0);
yy.setSelectedIndex(0);
mm.setSelectedIndex(0);
dd.setSelectedItem(0);
Vector rec_vector=new Vector();//从结果集中取数据放入向量rec_vector中
rec_vector.addElement(rs.getString(1));
rec_vector.addElement(rs.getString(2));
rec_vector.addElement(rs.getString(3));
rec_vector.addElement(rs.getString(4));
rec_vector.addElement(rs.getString(5));
rec_vector.addElement(rs.getString(6));
vector2.addElement(rec_vector);//向量rec_vector加入向量vect中
model2.fireTableStructureChanged();//更新表格，显示向量vect的内容
rs.close();
}
else{
JOptionPane.showMessageDialog(this,"教师信息插入失败",
"警告",JOptionPane.WARNING_MESSAGE);
rs.close();
}
}
}catch(SQLException ex){
ex.printStackTrace();
}
DBm.closeDB();
}
if(e.getSource()==b6)
{
//同步删除数据库中的数据
int selectrow = 0;
selectrow =table2.getSelectedRow();
String id =table2.getValueAt(selectrow,0).toString();
String sql="exec DeleteTeacher'"+id+"'";
String deletelog="exec DeleteLogon'"+id+"'";
SqlManager DBm=SqlManager.createInstance();//单态模式获取实例
DBm.connectDB();
if(DBm.executeUpdate(sql)==1)
{
JOptionPane.showMessageDialog(this,"教师信息信息已删除",
"删除成功",JOptionPane.INFORMATION_MESSAGE);
DBm.connectDB();
DBm.executeUpdate(deletelog);
model2.removeRow(selectrow);
tt1.setText("T");
tt2.setText(null);
tt3.setText(null);
r1.setSelected(true);
yy.setSelectedIndex(0);
mm.setSelectedIndex(0);
dd.setSelectedIndex(0);
}
DBm.closeDB();
}
}
public void mousePressed(MouseEvent e){}
public void mouseReleased(MouseEvent e){}
public void mouseEntered(MouseEvent e){}
public void mouseExited(MouseEvent e){}
public void mouseMoved(MouseEvent e){}
public void mouseDraged(MouseEvent e){}
public void mouseClicked(MouseEvent e)
{
if(e.getSource()==table1)
{
int selectrow = 0;
selectrow =table1.getSelectedRow();
String id =table1.getValueAt(selectrow,0).toString();
String name=table1.getValueAt(selectrow,1).toString();
String sex=table1.getValueAt(selectrow,2).toString();
String birth=table1.getValueAt(selectrow,3).toString().substring(0,10);
String classs=table1.getValueAt(selectrow,4).toString();
t1.setText(id);
t2.setText(name);
t3.setText(classs);
if(sex.trim().equals("男"))
radio1.setSelected(true);
else if(sex.equals("女"))
radio2.setSelected(true);
int y=Integer.parseInt(birth.substring(0, 4));
int m=Integer.parseInt(birth.substring(5, 7));
int d=Integer.parseInt(birth.substring(8));
year.setSelectedIndex(y-1980);
month.setSelectedIndex(m-1);
date.setSelectedIndex(d-1);
}
else if(e.getSource()==table2)
{
int selectrow = 0;
selectrow =table2.getSelectedRow();
String id =table2.getValueAt(selectrow,0).toString();
String name=table2.getValueAt(selectrow,1).toString();
String sex=table2.getValueAt(selectrow,2).toString();
String birth=table2.getValueAt(selectrow,3).toString().substring(0,10);
String position=table2.getValueAt(selectrow,4).toString();
String depart=table2.getValueAt(selectrow,5).toString();
tt1.setText(id);
tt2.setText(name);
tt3.setText(depart);
if(sex.trim().equals("男"))
r1.setSelected(true);
else if(sex.equals("女"))
r2.setSelected(true);
int y=Integer.parseInt(birth.substring(0, 4));
int m=Integer.parseInt(birth.substring(5, 7));
int d=Integer.parseInt(birth.substring(8));
yy.setSelectedIndex(y-1950);
mm.setSelectedIndex(m-1);
dd.setSelectedIndex(d-1);
if(position.equals("助教"))
post.setSelectedIndex(0);
else if(position.equals("讲师"))
post.setSelectedIndex(1);
else if(position.equals("副教授"))
post.setSelectedIndex(2);
else if(position.equals("教授"))
post.setSelectedIndex(3);
}
}
public void itemStateChanged(ItemEvent e)
{
if(e.getSource()==year)
{
int y=(Integer)year.getSelectedItem();
int m=(Integer)month.getSelectedItem();
if(((y%4==0)&&(y%100!=0))||(y%400==0))
{
if(m==2)
{
date.removeAll();
for(int i=1;i<=29;i++)
{
date.addItem(i);
}
}
else if(m==1||m==3||m==5||m==7||m==8||m==10||m==12)
{
date.removeAll();
for(int i=1;i<=31;i++)
{
date.addItem(i);
}
}
else if(m==4||m==6||m==9||m==11)
{
date.removeAll();
for(int i=1;i<=30;i++)
{
date.addItem(i);
}
}
}
else{
if(m==2)
{
date.removeAll();
for(int i=1;i<=28;i++)
{
date.addItem(i);
}
}
else if(m==1||m==3||m==5||m==7||m==8||m==10||m==12)
{
date.removeAll();
for(int i=1;i<=31;i++)
{
date.addItem(i);
}
}
else if(m==4||m==6||m==9||m==11)
{
date.removeAll();
for(int i=1;i<=30;i++)
{
date.addItem(i);
}
}
}
}
else if(e.getSource()==month)
{
int y=(Integer)year.getSelectedItem();
int m=(Integer)month.getSelectedItem();
if(((y%4==0)&&(y%100!=0))||(y%400==0))
{
if(m==2)
{
date.removeAll();
for(int i=1;i<=29;i++)
{
date.addItem(i);
}
}
else if(m==1||m==3||m==5||m==7||m==8||m==10||m==12)
{
date.removeAll();
for(int i=1;i<=31;i++)
{
date.addItem(i);
}
}
else if(m==4||m==6||m==9||m==11)
{
date.removeAll();
for(int i=1;i<=30;i++)
{
date.addItem(i);
}
}
}
else{
if(m==2)
{
date.removeAll();
for(int i=1;i<=28;i++)
{
date.addItem(i);
}
}
else if(m==1||m==3||m==5||m==7||m==8||m==10||m==12)
{
date.removeAll();
for(int i=1;i<=31;i++)
{
date.addItem(i);
}
}
else if(m==4||m==6||m==9||m==11)
{
date.removeAll();
for(int i=1;i<=30;i++)
{
date.addItem(i);
}
}
}
}
else if(e.getSource()==yy)
{
int y=(Integer)yy.getSelectedItem();
int m=(Integer)mm.getSelectedItem();
if(((y%4==0)&&(y%100!=0))||(y%400==0))
{
if(m==2)
{
dd.removeAll();
for(int i=1;i<=29;i++)
{
dd.addItem(i);
}
}
else if(m==1||m==3||m==5||m==7||m==8||m==10||m==12)
{
dd.removeAll();
for(int i=1;i<=31;i++)
{
dd.addItem(i);
}
}
else if(m==4||m==6||m==9||m==11)
{
dd.removeAll();
for(int i=1;i<=30;i++)
{
dd.addItem(i);
}
}
}
else{
if(m==2)
{
dd.removeAll();
for(int i=1;i<=28;i++)
{
dd.addItem(i);
}
}
else if(m==1||m==3||m==5||m==7||m==8||m==10||m==12)
{
date.removeAll();
for(int i=1;i<=31;i++)
{
date.addItem(i);
}
}
else if(m==4||m==6||m==9||m==11)
{
date.removeAll();
for(int i=1;i<=30;i++)
{
date.addItem(i);
}
}
}
}
else if(e.getSource()==mm)
{
int y=(Integer)yy.getSelectedItem();
int m=(Integer)mm.getSelectedItem();
if(((y%4==0)&&(y%100!=0))||(y%400==0))
{
if(m==2)
{
dd.removeAll();
for(int i=1;i<=29;i++)
{
dd.addItem(i);
}
}
else if(m==1||m==3||m==5||m==7||m==8||m==10||m==12)
{
dd.removeAll();
for(int i=1;i<=31;i++)
{
dd.addItem(i);
}
}
else if(m==4||m==6||m==9||m==11)
{
dd.removeAll();
for(int i=1;i<=30;i++)
{
dd.addItem(i);
}
}
}
else{
if(m==2)
{
dd.removeAll();
for(int i=1;i<=28;i++)
{
dd.addItem(i);
}
}
else if(m==1||m==3||m==5||m==7||m==8||m==10||m==12)
{
dd.removeAll();
for(int i=1;i<=31;i++)
{
dd.addItem(i);
}
}
else if(m==4||m==6||m==9||m==11)
{
dd.removeAll();
for(int i=1;i<=30;i++)
{
dd.addItem(i);
}
}
}
}
}
}