logindialog.java~9~

简单的学生管理系统。。用JBUILER和SQL2000。

package studentgl;

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


/**
 * <p>Title: </p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2004</p>
 * <p>Company: </p>
 * @author not attributable
 * @version 1.0
 */

public class LoginDialog extends JDialog {
  JPanel panel1 = new JPanel();
  JLabel jLabel1 = new JLabel();
  JLabel jLabel2 = new JLabel();
  JLabel jLabel3 = new JLabel();
  JTextField jTextField1 = new JTextField();
  JPasswordField jPasswordField1 = new JPasswordField();
  JButton jButton1 = new JButton();
  JButton jButton2 = new JButton();
  private  Connection con;
  private  mainFrame Frame1;
  private  Statement stmt;


  public LoginDialog(mainFrame frame, String title, boolean modal) {
    super(frame, title, modal);
     this.setLocation(309,239);
    Frame1=frame;
    try {

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

  public LoginDialog() {
    this(null, "", false);
  }
  private void jbInit() throws Exception {
    panel1.setLayout(null);
    jLabel1.setFont(new java.awt.Font("Serif", 1, 25));
    jLabel1.setForeground(SystemColor.textHighlight);
    jLabel1.setHorizontalAlignment(SwingConstants.CENTER);
    jLabel1.setText("请输入学号和密码");
    jLabel1.setBounds(new Rectangle(-1, 15, 402, 52));
    jLabel2.setFont(new java.awt.Font("Serif", 1, 16));
    jLabel2.setForeground(Color.red);
    jLabel2.setHorizontalAlignment(SwingConstants.CENTER);
    jLabel2.setText("学号：");
    jLabel2.setBounds(new Rectangle(64, 89, 92, 25));
    jLabel3.setBounds(new Rectangle(65, 141, 92, 25));
    jLabel3.setText("密码：");
    jLabel3.setHorizontalAlignment(SwingConstants.CENTER);
    jLabel3.setForeground(Color.red);
    jLabel3.setFont(new java.awt.Font("Serif", 1, 16));
    jTextField1.setFont(new java.awt.Font("Serif", 0, 16));
    jTextField1.setText("");
    jTextField1.setBounds(new Rectangle(146, 89, 161, 25));
    jPasswordField1.setFont(new java.awt.Font("Dialog", 0, 16));
    jPasswordField1.setText("");
    jPasswordField1.setBounds(new Rectangle(147, 139, 163, 26));
    jButton1.setBounds(new Rectangle(79, 196, 73, 25));
    jButton1.setFont(new java.awt.Font("Serif", 0, 12));
    jButton1.setForeground(Color.red);
    jButton1.setText("确定");
    jButton1.addActionListener(new LoginDialog_jButton1_actionAdapter(this));
    jButton2.setBounds(new Rectangle(254, 196, 73, 25));
    jButton2.setFont(new java.awt.Font("Serif", 0, 12));
    jButton2.setForeground(Color.orange);
    jButton2.setText("重设");
    jButton2.addActionListener(new LoginDialog_jButton2_actionAdapter(this));
    getContentPane().add(panel1);
    panel1.add(jLabel1, null);
    panel1.add(jLabel2, null);
    panel1.add(jTextField1, null);
    panel1.add(jPasswordField1, null);
    panel1.add(jLabel3, null);
    panel1.add(jButton1, null);
    panel1.add(jButton2, null);
    con = connect.getconn();
  }

  void jButton1_actionPerformed(ActionEvent e) {
    try {
      con=connect.getconn();
      stmt=con.createStatement();
      int stID=Integer.parseInt(jTextField1.getText().trim());
      String passwordtemp=jPasswordField1.getText();
      String loginQuery="select * from StudentInfo where StID=" +stID+" and StPWD = " +passwordtemp;
      ResultSet rs = stmt.executeQuery(loginQuery);
      if(rs.next()) {
        JOptionPane.showMessageDialog(this,"登陆成功","信息提示",1);

       // Frame1.StID=stID;
         Frame1.login=true;
         this.hide();
        return;
     }
      else {
     Frame1.login_false();
     jTextField1.setText("学号或者密码错误。");}
      }catch(SQLException ex){
       System.out.print("系统或者输进数据错误！"+ex.toString());
     }

  }

  void jButton2_actionPerformed(ActionEvent e) {
    jTextField1.setText("");
    jPasswordField1.setText("");
  }
}

class LoginDialog_jButton1_actionAdapter implements java.awt.event.ActionListener {
  LoginDialog adaptee;

  LoginDialog_jButton1_actionAdapter(LoginDialog adaptee) {
    this.adaptee = adaptee;
  }
  public void actionPerformed(ActionEvent e) {
    adaptee.jButton1_actionPerformed(e);
  }
}

class LoginDialog_jButton2_actionAdapter implements java.awt.event.ActionListener {
  LoginDialog adaptee;

  LoginDialog_jButton2_actionAdapter(LoginDialog adaptee) {
    this.adaptee = adaptee;
  }
  public void actionPerformed(ActionEvent e) {
    adaptee.jButton2_actionPerformed(e);
  }
}