login.java

医疗管理系统

package cliniquemanager;

import javax.swing.*;
import java.awt.Dimension;
import java.awt.Rectangle;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.sql.*;

import cliniquemanager.MyDatabase;
/**
 * <p>Title: CliniqueManager</p>
 *
 * <p>Description: </p>
 *
 * <p>Copyright: Copyright (c) 2007</p>
 *
 * <p>Company: shine</p>
 *
 * @author robin
 * @version 1.0
 */
public class Login extends JFrame {
    JPanel contentPane;
    JTextField tfUsername = new JTextField();
    JLabel lblPassword = new JLabel();
    JPasswordField pfPassword = new JPasswordField();
    JLabel lblUsername = new JLabel();
    JButton btnLogin = new JButton();
    JButton btnCancel = new JButton();
    ButtonGroup bg=new ButtonGroup();
    public Login() {
        try {
            setDefaultCloseOperation(EXIT_ON_CLOSE);
            jbInit();
        } catch (Exception exception) {
            exception.printStackTrace();
        }
    }

    /**
     * Component initialization.
     *
     * @throws java.lang.Exception
     */
    private void jbInit() throws Exception {
        contentPane = (JPanel) getContentPane();
        contentPane.setLayout(null);
        this.setResizable(false);
        setSize(new Dimension(300, 200));
        setTitle("登陆");
        //设置默认按钮为“登陆”按钮
        JRootPane RootPane = getRootPane();
        RootPane.setDefaultButton(btnLogin);
        tfUsername.setBounds(new Rectangle(99, 30, 159, 29));
        lblPassword.setText("密码：");
        lblPassword.setBounds(new Rectangle(34, 79, 96, 25));
        pfPassword.setBounds(new Rectangle(100, 77, 158, 28));
        lblUsername.setText("用户名：");
        lblUsername.setBounds(new Rectangle(34, 33, 99, 26));
        btnLogin.setBounds(new Rectangle(32, 124, 99, 30));
        btnLogin.setText("登陆");
        btnLogin.addActionListener(new Login_btnLogin_actionAdapter(this));
        btnCancel.setBounds(new Rectangle(159, 124, 100, 30));
        btnCancel.setText("取消");
        btnCancel.addActionListener(new Login_btnCancel_actionAdapter(this));
        contentPane.add(lblUsername);
        contentPane.add(pfPassword);
        contentPane.add(tfUsername);
        contentPane.add(lblPassword);
        contentPane.add(btnLogin);
        contentPane.add(btnCancel);
    }
    int checkData(){
        if(tfUsername.getText().equals("")==true || String.valueOf(pfPassword.getPassword()).equals("")==true)
        {
            JOptionPane.showMessageDialog(null,"请输入完整信息！","系统提示",JOptionPane.OK_OPTION);
            return 0;
        }
        return 1;
    }

    public void btnLogin_actionPerformed(ActionEvent e) {
        String username= new String();
        String pwd=new String();
        if(checkData()==0)
            return;
        username=tfUsername.getText().toString();
        pwd=String.valueOf(pfPassword.getPassword());
        MyDatabase db = new MyDatabase();
        ResultSet rs=db.getResultSet("SELECT * FROM login WHERE username='"+username+"' AND pwd='"+pwd+"'");
        try {
            if (rs.next())
            {
                MyDatabase.username = username;
            }
            else{
                JOptionPane.showMessageDialog(null,"你输入的用户名或密码错误，请重新输入！","系统提示",JOptionPane.ERROR_MESSAGE);
                return;
            }
        }catch(SQLException se){
            se.printStackTrace();
            JOptionPane.showMessageDialog(null,e,"系统提示",JOptionPane.ERROR_MESSAGE);
        }

       db.close();
       MainFrame mf=new MainFrame();
       mf.setVisible(true);
       dispose();

    }

    public void btnCancel_actionPerformed(ActionEvent e) {
        dispose();
    }

    public void jRadioButton1_actionPerformed(ActionEvent e) {
        lblUsername.setEnabled(true);
        tfUsername.setEnabled(true);
        lblPassword.setEnabled(true);
        pfPassword.setEnabled(true);
    }

    public void jRadioButton2_actionPerformed(ActionEvent e) {
        lblUsername.setEnabled(true);
        tfUsername.setEnabled(true);
        lblPassword.setEnabled(true);
        pfPassword.setEnabled(true);

    }

    public void jRadioButton3_actionPerformed(ActionEvent e) {
        lblUsername.setEnabled(false);
        tfUsername.setEnabled(false);
        lblPassword.setEnabled(false);
        pfPassword.setEnabled(false);

    }
}


class Login_btnLogin_actionAdapter implements ActionListener {
    private Login adaptee;
    Login_btnLogin_actionAdapter(Login adaptee) {
        this.adaptee = adaptee;
    }

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


class Login_btnCancel_actionAdapter implements ActionListener {
    private Login adaptee;
    Login_btnCancel_actionAdapter(Login adaptee) {
        this.adaptee = adaptee;
    }

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