《Java》— 学生管理系统——登录界面

学生管理系统登录界面

 

package javaapplication10;

import java.awt.Color;
import java.awt.Container;
import java.awt.Cursor;
import java.awt.Font;
import java.awt.Image;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPasswordField;
import javax.swing.JRootPane;
import javax.swing.JTextField;

public class XSGL extends JFrame{
	
	private static final long serialVersionUID = -6788045638380819221L;
	//用户名
	private JTextField ulName;
	//密码
	private JPasswordField ulPasswd;
	//小容器
	private JLabel j1;
	private JLabel j2;
	private JLabel j3;
	private JLabel j4;
	//小按钮
	private JButton b1;
	private JButton b2;
	private JButton b3;
	//复选框
	private JCheckBox c1;
	private JCheckBox c2;
	//列表框
	private JComboBox cb1;
	/**
	 * 初始化QQ登录页面
	 * */
	public XSGL (){
		//设置登录窗口标题
		this.setTitle("学生选课系统");
		//去掉窗口的装饰(边框)
//		this.setUndecorated(true); 
		//采用指定的窗口装饰风格
		this.getRootPane().setWindowDecorationStyle(JRootPane.NONE);
		//窗体组件初始化
		init();
		this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		//设置布局为绝对定位
		this.setLayout(null);
		this.setBounds(0, 0, 355, 265);
		//设置窗体的图标
		Image img0 = new ImageIcon("F:/1.jpg").getImage();
		this.setIconImage(img0);
		//窗体大小不能改变
		this.setResizable(false);
		//居中显示
		this.setLocationRelativeTo(null);
		//窗体显示
		this.setVisible(true);
	}
	/**
	 * 窗体组件初始化
	 * */
	public void init(){
		//创建一个容器,其中的图片大小和setBounds第三、四个参数要基本一致(需要自己计算裁剪)
		Container container = this.getContentPane();
		j1 = new JLabel();
		//设置背景图片
		Image img1 = new ImageIcon("F:/2.jpg").getImage();
		j1.setIcon(new ImageIcon(img1));
		j1.setBounds(0, 0, 355, 265);
		//LOGE设定
		j2 = new JLabel();
		Image img2 = new ImageIcon("D:/hdimg.png").getImage();
		j2.setIcon(new ImageIcon(img2));
		j2.setBounds(40, 95, 50, 53);
		//用户名输入框//注册账号
		j3 = new JLabel("用户名");
		ulName = new JTextField();
		ulName.setBounds(100, 100, 150, 20);
		//注册账号
		j3 = new JLabel("用户名");
		j3.setBounds(260, 100, 70, 20);
		//密码输入框
		ulPasswd = new JPasswordField();
		ulPasswd.setBounds(100, 130, 150, 20);
		//找回密码
		j4= new JLabel("密码");
		j4.setBounds(260, 130, 70, 20);
		//记住密码
		c1 = new JCheckBox("记住密码");
		c1.setBounds(105, 155, 80, 15);
		//自动登陆
		c2 = new JCheckBox("自动登陆");
		c2.setBounds(185, 155, 80, 15);
		//用户登陆状态选择
		cb1 = new JComboBox();
		cb1.addItem("学生");
		cb1.addItem("老师");
		cb1.addItem("管理");
		cb1.setBounds(40, 150, 55, 20);
		//登陆按钮
		b1 = new JButton("登录");
		//设置字体和颜色和手形指针
		b1.setFont(new Font("宋体", Font.PLAIN, 12));
		b1.setForeground(Color.RED);
		b1.setCursor(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR));
		b1.setBounds(280, 200, 65, 20);
		//给按钮添加
		b1.addActionListener(new ActionListener() {
			@Override
			public void actionPerformed(ActionEvent e) {
				String cmd = e.getActionCommand();
				if("登录".equals(cmd)){
					String username = ulName.getText();
					String userpassword = ulPasswd.getText();
					if(username.equals("20155104009") && userpassword.equals("20155104009")){
						JOptionPane.showConfirmDialog(null, "登录成功");
					}else{
						JOptionPane.showConfirmDialog(null, "登录失败");
					}
				}
			}
		});
		//多账号
		b2 = new JButton("注册");
		b2.setBounds(5, 200, 75, 20);
		//设置
		b3 = new JButton("设置");
		b3.setBounds(100, 200, 65, 20);
		//所有组件用容器装载
		j1.add(j2);
		j1.add(j3);
		j1.add(j4);
		j1.add(c1);
		j1.add(c2);
		j1.add(cb1);
		j1.add(b1);
		j1.add(b2);
		j1.add(b3);
		container.add(j1);
		container.add(ulName);
		container.add(ulPasswd);
	}
	public static void main(String[] args) {
		new XSGL();
	}
}