loginframe.java

学生管理系统

package edu.sm.view;

import java.awt.BorderLayout;
import java.awt.Button;
import java.awt.FlowLayout;
import java.awt.Frame;
import java.awt.Label;
import java.awt.Panel;
import java.awt.TextField;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

/**
 * 登录界面
 * @author wy
 *
 */
public class LoginFrame extends BaseFrame {
	
	/**
	 * 用户名
	 */
	private TextField name;
	
	/**
	 * 密码
	 */
	private TextField password;
	
	/**
	 * 提示窗口
	 */
	private Label message;
	
	public LoginFrame() {
		super("登陆界面", 150, 200, 300, 180);
		
		message = new Label();
		
		this.addWindowListener(new WindowAdapter() {
			@Override
			public void windowClosing(WindowEvent e) {
				System.exit(0);
			}
		});
		Panel p1 = new Panel();
		Panel p2 = new Panel();
		
		Label l1 = new Label("用户名");
		name = new TextField(10);
		
		Label l2 = new Label("密码");
		password = new TextField(10);
		
		Panel t1 = new Panel();
		t1.setLayout(new FlowLayout(FlowLayout.CENTER));
		t1.add(l1);
		t1.add(name);
		
		Panel t2 = new Panel();
		t2.setLayout(new FlowLayout(FlowLayout.CENTER));
		t2.add(l2);
		t2.add(password);
		
		p1.setLayout(new BorderLayout());
		p1.add(BorderLayout.NORTH,t1);
		p1.add(BorderLayout.SOUTH,t2);
		
		p2.setLayout(new FlowLayout(FlowLayout.CENTER));
		Button ok = new Button("登录");
		p2.add(message);
		p2.add(ok);
		
		this.setLayout(new BorderLayout());
		
		this.add(BorderLayout.NORTH,p1);
		this.add(BorderLayout.SOUTH,p2);
		add(BorderLayout.CENTER,p1);
		add(BorderLayout.SOUTH,p2);
		pack();
		
		ok.addActionListener(new LoginAction(this));
		
		this.setVisible(true);
	}
	
	private class LoginAction implements ActionListener {
		private Frame lf;
		
		LoginAction(Frame lf) {
			this.lf = lf;
		}
		
		@Override
		public void actionPerformed(ActionEvent e) {
			String names = name.getText();
			String pas = password.getText();
			if("root".equalsIgnoreCase(names)&&"root".equalsIgnoreCase(pas)) {
				lf.dispose();
				new MainFrame();
			} else {
				message.setText("用户名或密码错误!");
			}
		}
	}
}