serverlogin.java

自己用java编写的基于B/S的在线考试系统

import java.awt.HeadlessException;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

import javax.swing.JButton;

import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPasswordField;
import javax.swing.JTextField;
public class ServerLogin extends JFrame implements ActionListener {

	private JLabel jLabel1;

	private JLabel jLabel2;

	private JPasswordField password;

	private JLabel jLabel3;

	private JButton jButton2;

	private JButton jButton1;

	private JTextField name;

	public ServerLogin() throws HeadlessException {
		this.setTitle("网络考试系统-服务端");
		this.setResizable(false);
		{
			getContentPane().setLayout(null);
			{
				jLabel1 = new JLabel();
				getContentPane().add(jLabel1);
				jLabel1.setText("\u7528\u6237\u540d");
				jLabel1.setBounds(50, 69, 51, 15);
			}
			{
				jLabel2 = new JLabel();
				getContentPane().add(jLabel2);
				jLabel2.setText("\u5bc6 \u7801");
				jLabel2.setBounds(50, 104, 36, 22);
			}
			{
				name = new JTextField();
				getContentPane().add(name);
				name.setBounds(107, 65, 121, 22);
			}
			{
				password = new JPasswordField();
				getContentPane().add(password);
				password.setBounds(107, 104, 121, 22);
			}
			{
				jButton1 = new JButton();
				getContentPane().add(jButton1);
				jButton1.setText("\u767b\u9646");
				jButton1.setBounds(50, 148, 74, 22);
				jButton1.addActionListener(this);
			}
			{
				jButton2 = new JButton();
				getContentPane().add(jButton2);
				jButton2.setText("\u9000\u51fa");
				jButton2.setBounds(163, 148, 76, 22);
			}
			{
				jLabel3 = new JLabel();
				getContentPane().add(jLabel3);
				jLabel3.setText("          管理员登陆");
				jLabel3.setBounds(0, 0, 302, 53);
				jButton2.addActionListener(this);
				jLabel3.setBackground(new java.awt.Color(192, 192, 192));
				jLabel3.setFont(new java.awt.Font("宋体", 1, 18));
				jLabel3.setOpaque(true);
				jLabel3.setDoubleBuffered(true);
				jLabel3.setAutoscrolls(true);
			}
		}
		{
			this.setSize(303, 225);
			this.setLocation(300, 180);
			this.setVisible(true);
			this.addWindowListener(new WindowAdapter() {

				public void windowClosing(WindowEvent e) {
					System.exit(0);
				}

			});
			validate();
		}
	}

	public void actionPerformed(ActionEvent e) {
		StudentManager st = new StudentManager();
		if (e.getSource() == jButton1) {
			String adminName = this.name.getText();
			String adminPassword = new String(password.getPassword());
			if (adminName == null || adminName.trim().equals("")) {
				JOptionPane.showMessageDialog(this, "用户名不能为空");
				this.name.setText(null);
				this.password.setText(null);
				return;
			}
			Admin admin = new Admin();
			admin.setName(adminName);
			admin.setPassword(adminPassword);
			if (st.isLoginByAdmin(admin)) {
				// JOptionPane.showMessageDialog(this,"登陆成功");
				this.setVisible(false);
				MainFrame mf = new MainFrame();
				this.name.setText(null);
				this.password.setText(null);
				this.dispose();
			} else {
				JOptionPane.showMessageDialog(this, "用户名及密码错误");
				this.name.setText(null);
				this.password.setText(null);
				return;
			}
		}
		if (e.getSource() == jButton2) {
			System.exit(0);
		}
	}

	public static void main(String[] args) {
		ServerLogin l = new ServerLogin();
	}

}