loginframe.java

供初学者学习用的JBUILDER制作的非常简单的信用卡管理系统

package card;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.sql.*;


public class loginFrame extends JFrame {
  JPanel contentPane;
  JLabel jLabel1 = new JLabel();
  JLabel jLabel2 = new JLabel();
  JLabel jLabel3 = new JLabel();
  JTextField jTextField1 = new JTextField();
  JTextField jTextField2 = new JTextField();
  JButton jButton1 = new JButton();
  JButton jButton2 = new JButton();
  JLabel jLabel4 = new JLabel();

  //Construct the frame
  public loginFrame() {
    enableEvents(AWTEvent.WINDOW_EVENT_MASK);
    try {
      jbInit();
    }
    catch (Exception e) {
      e.printStackTrace();
    }
  }

  //Component initialization
  private void jbInit() throws Exception {
    contentPane = (JPanel)this.getContentPane();
    jLabel1.setFont(new java.awt.Font("Dialog", 1, 25));
    jLabel1.setForeground(Color.blue);
    jLabel1.setHorizontalAlignment(SwingConstants.CENTER);
    jLabel1.setText("欢迎访问信用卡系统");
    jLabel1.setBounds(new Rectangle(36, 28, 285, 58));
    contentPane.setLayout(null);
    this.setSize(new Dimension(400, 300));
    this.setTitle("Frame Title");
    jLabel2.setFont(new java.awt.Font("Dialog", 1, 20));
    jLabel2.setForeground(Color.blue);
    jLabel2.setText("卡号：");
    jLabel2.setBounds(new Rectangle(82, 91, 88, 40));
    jLabel3.setFont(new java.awt.Font("Dialog", 1, 20));
    jLabel3.setForeground(Color.blue);
    jLabel3.setText("密码:");
    jLabel3.setBounds(new Rectangle(82, 142, 82, 31));
    jTextField1.setText("");
    jTextField1.setBounds(new Rectangle(150, 100, 100, 33));
    jTextField2.setText("");
    jTextField2.setBounds(new Rectangle(150, 145, 100, 32));
    jButton1.setBounds(new Rectangle(85, 206, 87, 29));
    jButton1.setFont(new java.awt.Font("Dialog", 1, 20));
    jButton1.setForeground(Color.blue);
    jButton1.setText("确定");
    jButton1.addActionListener(new loginFrame_jButton1_actionAdapter(this));
    jButton2.setBounds(new Rectangle(185, 206, 82, 29));
    jButton2.setFont(new java.awt.Font("Dialog", 1, 20));
    jButton2.setForeground(Color.blue);
    jButton2.setText("重置");
    jButton2.addActionListener(new loginFrame_jButton2_actionAdapter(this));
    jLabel4.setBounds(new Rectangle(84, 237, 248, 42));
    contentPane.add(jLabel4, null);
    contentPane.add(jLabel2, null);
    contentPane.add(jLabel3, null);
    contentPane.add(jTextField2, null);
    contentPane.add(jTextField1, null);
    contentPane.add(jLabel1, null);
    contentPane.add(jButton2, null);
    contentPane.add(jButton1, null);
  }

  //Overridden so we can exit when window is closed
  protected void processWindowEvent(WindowEvent e) {
    super.processWindowEvent(e);
    if (e.getID() == WindowEvent.WINDOW_CLOSING) {
      System.exit(0);
    }
  }

  void jButton1_actionPerformed(ActionEvent e) {
    try {
      String CardID,ps;
      CardID=jTextField1.getText();
      ps= jTextField2.getText();
      Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
      String url = "jdbc:odbc:creditCard";
      Connection con = DriverManager.getConnection(url, "", "");
      Statement stat = con.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_UPDATABLE);
      String sql = "select CardID,Password from card where CardID='"+CardID+"' and Password='"+ps+"'" ;
      ResultSet rs = stat.executeQuery(sql);
      rs.beforeFirst();
      if (rs.next()){
        this.dispose();
        eventFrame ef=new eventFrame(CardID);
        ef.setBounds(200,150,400,350);
        ef.show();
        ef.validate();
      }
      else
        jLabel4.setText("该用户不存在！");
      //con.close();
      //stat.close();
      //rs.close();

    }
    catch (Exception ex) {
      System.out.print(ex.getMessage());
    }

  }

  void jButton2_actionPerformed(ActionEvent e) {
    jTextField1.setText("");
    jTextField2.setText("");
  }
}


class loginFrame_jButton1_actionAdapter implements java.awt.event.ActionListener {
  loginFrame adaptee;

  loginFrame_jButton1_actionAdapter(loginFrame adaptee) {
    this.adaptee = adaptee;
  }
  public void actionPerformed(ActionEvent e) {
    adaptee.jButton1_actionPerformed(e);
  }
}

class loginFrame_jButton2_actionAdapter implements java.awt.event.ActionListener {
  loginFrame adaptee;

  loginFrame_jButton2_actionAdapter(loginFrame adaptee) {
    this.adaptee = adaptee;
  }
  public void actionPerformed(ActionEvent e) {
    adaptee.jButton2_actionPerformed(e);
  }
}