loginframe2.java

Java做的简单登陆注册窗体

package sfms;
import java.sql.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import com.borland.jbcl.layout.*;

public class loginFrame2 extends JFrame {
  JPanel contentPane;
  XYLayout xYLayout1 = new XYLayout();
  JLabel jLabel1 = new JLabel();
  JLabel jLabel2 = new JLabel();
  JLabel jLabel3 = new JLabel();
  JTextField jTextField1 = new JTextField();
  JButton jButton1 = new JButton();
  JButton jButton2 = new JButton();
  Connection con;
  Statement set;
  ResultSet re;
  JPasswordField jPasswordField1 = new JPasswordField();

  //Construct the frame
  public loginFrame2() {
    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, 18));
    jLabel1.setForeground(new Color(255, 144, 85));
    jLabel1.setHorizontalAlignment(SwingConstants.CENTER);
    jLabel1.setText("欢迎进入学生信息管理系统");
    contentPane.setLayout(xYLayout1);
    this.setSize(new Dimension(400, 300));
    this.setTitle("简易学生信息管理系统 SFMS");
    jLabel2.setFont(new java.awt.Font("Dialog", 1, 15));
    jLabel2.setForeground(Color.blue);
    jLabel2.setText("用户名");
    jLabel3.setFont(new java.awt.Font("Dialog", 1, 15));
    jLabel3.setForeground(Color.blue);
    jLabel3.setText("密码");
    jTextField1.setText("");
    jButton1.setFont(new java.awt.Font("Dialog", 1, 15));
    jButton1.setForeground(Color.blue);
    jButton1.setText("提   交");
    jButton1.addActionListener(new Frame1_jButton1_actionAdapter(this));
    jButton2.setFont(new java.awt.Font("Dialog", 1, 15));
    jButton2.setForeground(Color.blue);
    jButton2.setText("清   除");
    jButton2.addActionListener(new Frame1_jButton2_actionAdapter(this));
    contentPane.add(jLabel1,  new XYConstraints(7, 0, 380, 40));
    contentPane.add(jLabel2,   new XYConstraints(47, 87, 94, 31));
    contentPane.add(jLabel3,  new XYConstraints(46, 165, 93, 32));
    contentPane.add(jTextField1,    new XYConstraints(180, 88, 130, 32));
    contentPane.add(jButton1,  new XYConstraints(67, 237, 92, 32));
    contentPane.add(jButton2,    new XYConstraints(244, 237, 92, 32));
    contentPane.add(jPasswordField1, new XYConstraints(180, 154, 130, 32));
  }
  //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 jButton2_actionPerformed(ActionEvent e) {
   jTextField1.setText("");
  }

  public void jButton1_actionPerformed(ActionEvent e) {
    String  sd=jTextField1.getText();
        String sd1=jPasswordField1.getText().trim();
        if(sd.length()==0&&sd1.length()==0){
            JOptionPane .showMessageDialog(this,"未填入姓名或密码");
        }else{
            try{
                Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
                String urll="jdbc:odbc:student";
                con=DriverManager.getConnection(urll);
                set=con.createStatement();
                String dd="select  *  from users  where Username='"+sd+"' and Password='"+sd1+"'";
                 re=set.executeQuery(dd);
                 if(re.next()){
                   this.setVisible(false);
                   new mainWindow().show();
             //  if(sd.equals(re.getString(1))&& sd1.equals(re.getString(2))){
                   //   mainWindow mw=new mainWindow();
                    //  mw.show();

                     // this.setVisible(false);

               }//else{
                   //JOptionPane.showMessageDialog(this,"姓名或密码有错,");
               // }

               //}
               else{
                  JOptionPane .showMessageDialog(this,"用户名或密码错误！！！");
               }



            }catch(Exception ex){
                ex.printStackTrace();
            }
        }

  }
}

class Frame1_jButton1_actionAdapter
    implements ActionListener {
  private loginFrame2 adaptee;
  Frame1_jButton1_actionAdapter(loginFrame2 adaptee) {
    this.adaptee = adaptee;
  }

  public void actionPerformed(ActionEvent e) {
    adaptee.jButton1_actionPerformed(e);
  }
}

class Frame1_jButton2_actionAdapter implements java.awt.event.ActionListener {
  loginFrame2 adaptee;

  Frame1_jButton2_actionAdapter(loginFrame2 adaptee) {
    this.adaptee = adaptee;
  }
  public void actionPerformed(ActionEvent e) {
    adaptee.jButton2_actionPerformed(e);
  }
}