学生管理系统(图形界面)——Java

1、学生管理系统（图形界面）Java源代码：package exp10;import javax.swing.JFrame;public class MainClass /* * param args */public static void main(String args) / TODO Auto-generated method stubJFrame myFrame=new JFrame("学生成绩管理系统");myFrame.setLocation(300,100);/myFrame.setContentPane(new LoginPane(myFrame);myFra

2、me.pack();myFrame.setVisible(true);package exp10;import java.sql.Connection;import java.sql.DriverManager;import java.sql.ResultSet;import java.sql.SQLException;import java.sql.Statement;public class DataBase Connection conn=null;public Connection getConn()return this.conn;public void setConn(Connec

3、tion conn)this.conn=conn;public boolean getConnection()String url="jdbc:mysql:/localhost:3306/ScoreManagement?user=root&password=123"tryClass.forName("org.gjt.mm.mysql.Driver");conn=DriverManager.getConnection(url);return true;catch(SQLException e)System.out.println(e.getMess

4、age();return false; catch (ClassNotFoundException e) / TODO Auto-generated catch blocke.printStackTrace();return false;public ResultSet executeQuery(String sql)ResultSet rs=null;Statement stmt=null;if(conn=null)this.getConnection();trystmt=conn.createStatement();rs=stmt.executeQuery(sql);return rs;c

5、atch(SQLException e)return null;public int executeUpdate(String sql)Statement stmt=null;int linecount=0;if(conn=null)this.getConnection();trystmt=conn.createStatement();linecount=stmt.executeUpdate(sql);catch(SQLException e)return linecount;package exp10;import java.awt.event.ActionEvent;import java

6、.awt.event.ActionListener;import java.sql.ResultSet;import java.sql.SQLException;import javax.swing.Box;import javax.swing.ButtonGroup;import javax.swing.JButton;import javax.swing.JFrame;import javax.swing.JLabel;import javax.swing.JPanel;import javax.swing.JPasswordField;import javax.swing.JRadioB

7、utton;import javax.swing.JTextField;public class LoginPane extends JPanel implements ActionListener/* * */private static final long serialVersionUID = 1L;JFrame myFrame;JLabel lab_username=new JLabel("用户名");JTextField jt_username=new JTextField(20);JLabel lab_password=new JLabel("密 码&

8、quot;);JPasswordField jt_pwd=new JPasswordField(20);JRadioButton jrb_manager=new JRadioButton("管理员");JRadioButton jrb_teacher=new JRadioButton("教师");JRadioButton jrb_student=new JRadioButton("学生");public LoginPane(JFrame myFrame)this.myFrame=myFrame;this.init();public v

9、oid init()Box box_user=Box.createHorizontalBox();box_user.add(lab_username);box_user.add(Box.createHorizontalStrut(20);box_user.add(jt_username);jt_pwd.setEchoChar('#');Box box_pwd=Box.createHorizontalBox();box_pwd.add(lab_password);box_pwd.add(Box.createHorizontalStrut(20);box_pwd.add(jt_pw

10、d);ButtonGroup bg=new ButtonGroup();bg.add(jrb_manager);bg.add(jrb_teacher);bg.add(jrb_student);Box box_role=Box.createHorizontalBox();box_role.add(jrb_manager);box_role.add(Box.createHorizontalStrut(5);box_role.add(jrb_teacher);box_role.add(Box.createHorizontalStrut(5);box_role.add(jrb_student);JBu

11、tton jb_login=new JButton("登陆");JButton jb_exit=new JButton("退出");Box box_button=Box.createHorizontalBox();box_button.add(jb_login);box_button.add(Box.createHorizontalStrut(30);box_button.add(jb_exit);jb_login.addActionListener(this);jb_exit.addActionListener(this);jb_login.setAc

12、tionCommand("login");jb_exit.setActionCommand("exit");Box box_login=Box.createVerticalBox();box_login.add(box_user);box_login.add(Box.createHorizontalStrut(10);box_login.add(box_pwd);box_login.add(Box.createHorizontalStrut(10);box_login.add(box_role);box_login.add(Box.createHoriz

13、ontalStrut(10);box_login.add(box_button);this.add(box_login);Overridepublic void actionPerformed(ActionEvent e) / TODO Auto-generated method stubif(e.getActionCommand().equals("login")String username=this.jt_username.getText().trim();String pwd=String.valueOf(this.jt_pwd.getPassword();Data

14、Base db=new DataBase();String sql="select * from User where name='"+username+"' and password='"+pwd+"'"ResultSet rs=db.executeQuery(sql);if(rs!=null)this.myFrame.setContentPane(new ManagerPane(this.myFrame);myFrame.setSize(800,500);this.myFrame.validate(

15、);elsethis.myFrame.dispose();package exp10;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.awt.event.ItemEvent;import java.awt.event.ItemListener;import javax.swing.JFrame;import javax.swing.JMenu;import javax.swing.JMenuBar;import javax.swing.JMenuItem;import java

16、x.swing.JPanel;import javax.swing.JTable;public class ManagerPane extends JPanel implements ActionListenerJFrame myFrame;public ManagerPane(JFrame myFrame)this.myFrame=myFrame;this.init();public void init()JMenuBar menu=new JMenuBar();JMenu jm_user=new JMenu("人员管理");JMenuItem jmi_add=new J

17、MenuItem("增加人员");JMenuItem jmi_search=new JMenuItem("查询人员");jmi_add.addActionListener(this);jmi_add.setActionCommand("addUser");jmi_search.addActionListener(this);jmi_search.setActionCommand("searchUser");jm_user.add(jmi_add);jm_user.add(jmi_search);JMenu jm_e

18、xit=new JMenu("退出");menu.add(jm_user);menu.add(jm_exit);this.add(menu,0);Overridepublic void actionPerformed(ActionEvent e) / TODO Auto-generated method stubif(e.getActionCommand().equals("searchUser")this.myFrame.setContentPane(new SearchUserPane(this.myFrame);this.myFrame.valid

19、ate();package exp10;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.sql.ResultSet;import java.sql.SQLException;import java.util.Vector;import javax.swing.Box;import javax.swing.JButton;import javax.swing.JFrame;import javax.swing.JLabel;import javax.swing.JPanel;im

20、port javax.swing.JTable;import javax.swing.JTextField;import javax.swing.table.DefaultTableModel;public class SearchUserPane extends JPanel implements ActionListener /* * */private static final long serialVersionUID = 1L;JFrame myFrame;JLabel jlb_name=new JLabel("查询用户名");JTextField jt_name

21、=new JTextField(20);JButton btn_search=new JButton("查询");DataBase db=new DataBase();DefaultTableModel tableModel;JTable jt_show;public SearchUserPane(JFrame myFrame)this.myFrame=myFrame;init();public void init()Box box_user=Box.createHorizontalBox();box_user.add(jlb_name);box_user.add(Box.

22、createHorizontalStrut(20);box_user.add(jt_name);btn_search.addActionListener(this);box_user.add(btn_search);String colname="编号","姓名","密码","身份"tableModel=new DefaultTableModel(null,colname);jt_show=new JTable(tableModel);Box box_show=Box.createHorizontalBox();b

23、ox_show.add(jt_show);ResultSet rs=db.executeQuery("select * from User");try while(rs.next()Vector data=new Vector();data.add(rs.getString("id");data.add(rs.getString("name");data.add(rs.getString("password");data.add(rs.getString("role");tableModel.a

24、ddRow(data); catch (SQLException e) / TODO Auto-generated catch blocke.printStackTrace();Box box_search=Box.createVerticalBox();box_search.add(box_user);box_search.add(Box.createVerticalStrut(50);box_search.add(box_show);this.add(box_search);Overridepublic void actionPerformed(ActionEvent e) / TODO

25、Auto-generated method stubif(e.getSource()=this.btn_search)String username=this.jt_name.getText().trim();ResultSet rs=db.executeQuery("select * from User where name='"+username+"'");try while(rs.next()Vector data=new Vector();data.add(rs.getString("id");data.add

26、(rs.getString("name");data.add(rs.getString("password");data.add(rs.getString("role");tableModel.fireTableDataChanged();tableModel.addRow(data); catch (SQLException e1) / TODO Auto-generated catch blocke1.printStackTrace();package exp10;import javax.swing.JTable;import javax.swing.table.DefaultTableModel;public class UserTable extends JTable public UserTable()package exp10;import java.sql.ResultSet;import java.sql.ResultSetMetaData;import java.sql.SQLException;i