用java语言编写的信用卡管理系统

package card; import java.awt.*; import java.awt.event.*; import javax.swing.*; import javax.swing.event.*; import java.sql.*; import java.awt.event.ActionListener; import java.awt.event.ActionEvent; import javax.swing.JOptionPane; public class loginFrame extends JFrame { JPanel contentPane; BorderLayout borderLayout1 = new BorderLayout(); String CardID; String loginQuery; String passwordtemp; PreparedStatement loginStmt; Connection con; ResultSet rs; JLabel jLabel1 = new JLabel(); JPanel jPanel1 = (JPanel)getGlassPane(); JLabel jLabel2 = new JLabel(); JLabel jLabel3 = new JLabel(); JLabel jLabel4 = new JLabel(); JTextField jTextField1 = new JTextField(); JPasswordField jTextField2 = new JPasswordField(); JButton jButton1 = new JButton(); JButton jButton2 = new JButton(); ImageIcon img1,img2; public loginFrame() { try { setDefaultCloseOperation( EXIT_ON_CLOSE ); setUndecorated(true);//不显示标题栏 jPanel1.addMouseMotionListener(new moveFrameEvent(this)); setResizable(false); jbInit(); } catch( Exception exception ) { exception.printStackTrace(); } } /** * Component initialization. * * @throws java.lang.Exception */ private void jbInit() throws Exception { contentPane = ( JPanel ) getContentPane(); contentPane.setLayout( borderLayout1 ); setSize( new Dimension( 385, 320 ) ); setTitle( "信用卡管理" ); //图标 //img1=new ImageIcon("img/log001.gif"); img1=new ImageIcon("img/1.jpg"); img2=new ImageIcon("img/log002.gif"); jLabel1.setIcon( img1 ); jLabel1.setText( "" ); jPanel1.setLayout( null ); jLabel3.setFont( new java.awt.Font( "Dialog", Font.PLAIN, 13 ) ); jLabel3.setText( "卡号：" ); jLabel3.setBounds( new Rectangle( 64, 103, 48, 22 ) ); jLabel4.setFont( new java.awt.Font( "Dialog", Font.PLAIN, 13 ) ); jLabel4.setText( "密码：" ); jLabel4.setBounds( new Rectangle( 66, 163, 53, 24 ) ); jTextField1.setBounds( new Rectangle( 138, 102, 155, 23 ) ); jTextField1.setBorder( BorderFactory.createLineBorder( Color.black ) ); jTextField1.setBackground(new Color(84,103,206)); jTextField1.addActionListener( new ActionListener() { public void actionPerformed( ActionEvent e ) { jTextField1_actionPerformed( e ); } } ); jTextField1.addFocusListener(new java.awt.event.FocusAdapter() { public void focusLost(FocusEvent e) { text1_focusLost(e); } }); jTextField1.addFocusListener(new java.awt.event.FocusAdapter() { public void focusGained(FocusEvent e) { text1_focusGained(e); } }); jTextField2.setBounds( new Rectangle( 138, 161, 155, 22 ) ); jTextField2.setBorder( BorderFactory.createLineBorder( Color.black ) ); jTextField2.setBackground(new Color(84,103,206)); jTextField2.addActionListener( new ActionListener() { public void actionPerformed( ActionEvent e ) { jTextField2_actionPerformed( e ); } } ); jTextField2.addFocusListener(new java.awt.event.FocusAdapter() { public void focusLost(FocusEvent e) { text1_focusLost(e); } }); jTextField2.addFocusListener(new java.awt.event.FocusAdapter() { public void focusGained(FocusEvent e) { text1_focusGained(e); } }); jButton1.setBounds( new Rectangle( 72, 219, 84, 20 ) ); jButton1.setFont( new java.awt.Font( "Dialog", Font.PLAIN, 12 ) ); jButton1.setText( "登　录" ); //jButton1.setBorder( BorderFactory.createEtchedBorder() ); jButton1.setBackground(new Color(84,103,206)); jButton1.addActionListener( new ActionListener() { public void actionPerformed( ActionEvent e ) { jButton1_actionPerformed( e ); } } ); jButton2.setBounds( new Rectangle( 201, 217, 90, 22 ) ); jButton2.setFont( new java.awt.Font( "Dialog", Font.PLAIN, 12 ) ); jButton2.setText( "退　出" ); //jButton2.setBorder( BorderFactory.createEtchedBorder() ); jButton2.setBackground(new Color(84,103,206)); jButton2.addActionListener( new ActionListener() { public void actionPerformed( ActionEvent e ) { jButton2_actionPerformed( e ); } } ); jLabel2.setIcon( img2); jPanel1.add( jTextField2 ); jPanel1.add( jLabel3 ); jPanel1.add( jButton2 ); jPanel1.add( jTextField1 ); jPanel1.add( jButton1 ); jPanel1.add( jLabel4 ); jPanel1.setVisible(true); //contentPane.add( jPanel1, java.awt.BorderLayout.CENTER ); //contentPane.add( jLabel1, java.awt.BorderLayout.NORTH ); //contentPane.add( jLabel2, java.awt.BorderLayout.SOUTH ); contentPane.add( jLabel1, java.awt.BorderLayout.CENTER ); //定义数据 Connection con=cardConnect.getconn(); loginQuery="Select * from card Where CardID=? and Password=?"; loginStmt=con.prepareStatement(loginQuery); } void text1_focusLost(FocusEvent e) { JTextField jt=(JTextField)e.getSource(); jt.setBackground(new Color(84,103,206)); } void text1_focusGained(FocusEvent e) { JTextField jt=(JTextField)e.getSource(); jt.setBackground(Color.white); } public void jButton1_actionPerformed( ActionEvent e ) { protocol(); } public void jButton2_actionPerformed( ActionEvent e ) { System.exit(0); } //警告对话框 public void showMessageDialog(String s1,String s2) { JOptionPane.showMessageDialog(this,s1,s2,JOptionPane.ERROR_MESSAGE); } //登录 public void protocol() { if(jTextField1.getText().trim().equals("")) { showMessageDialog("请输入用户名！","警告"); jTextField1.selectAll(); jTextField1.requestFocus(); return; } if(jTextField2.getPassword().toString().equals("")) { showMessageDialog("请输入密码！","警告"); jTextField2.setText(""); jTextField2.requestFocus(); return; } CardID=jTextField1.getText();//提取CardID的值 try { loginStmt.setString( 1, CardID ); //给出第一主机变量赋值 passwordtemp=""; for(int i=0;i<jTextField2.getPassword().length;i++) { passwordtemp+=jTextField2.getPassword()[i]; }//提取用户输入密码的值 loginStmt.setString(2,passwordtemp); rs=loginStmt.executeQuery();//执行查询，返回一个结果集 if(rs.next())//验证卡号和密码 { eventFrame ef=new eventFrame();//通过验证 ef.setCardID(CardID); ef.setVisible(true); this.setVisible(false); this.dispose(); }else//没有通过验证 { showMessageDialog("用户名或密码错误！","警告"); jTextField1.selectAll(); jTextField1.requestFocus(); jTextField2.setText(""); } }catch(SQLException ex) { System.out.println("数据库错误1！"); return; } } public void jTextField1_actionPerformed( ActionEvent e ) { jTextField2.requestFocus(); } public void jTextField2_actionPerformed( ActionEvent e ) { protocol(); } }