JAVA SWing实现登陆界面
1、我们先看演示效果
2、下面看具体实现,启动eclipse,创建java 工程
3、新建添加类和包名
4、工程中需要导入的系统中的包
import java.awt.*;
import javax.swing.*;
//对按键监控需要用到的包
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
//对鼠标操作监控需要用到的包
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseMotionAdapter;
5、java 代码如下:工程正常工作,需要加入背景图片和logo图片,背景图片大小是600*544, logo图片大小是150*150,图片所在目录是工程所在目录的子目录img中
package com.fnn.login;
/*import com.fnn.main.MainFrame;*/
//所需要的包
import java.awt.*;
import javax.swing.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseMotionAdapter;
public class LoginFrame extends JFrame {
Color logoPaneColor = new Color(230, 230, 250);
Color mainPaneColor = new Color(230, 230, 250);
Color mainFrameColor = new Color(186, 110 ,64);
Color logoFramColor = new Color(186, 110, 64);
JLayeredPane layeredPane = new JLayeredPane(); // 面板层
ImageIcon bgImage = new ImageIcon("./img/bgImage.png"); // 背景图片
ImageIcon lgImage =new ImageIcon("./img/lgImage.png");
JPanel bgPanel = new JPanel(); // 背景面板
JPanel mainPanel = new JPanel(); // 登陆面板
JPanel logoPanel = new JPanel(); //企业logo
final JLabel server_ip = new JLabel("服务器:");
final JLabel user_name = new JLabel("用户名:");
final JLabel user_password = new JLabel("密 码:");
JButton button_ok = new JButton("登陆"); // 确认按钮
JButton button_cansel = new JButton("取消"); //取消按钮
JComboBox text_ip = null; //服务器IP和端口号
JTextField text_name = new JTextField(); // 登陆用户名
JPasswordField text_password = new JPasswordField(); // 登陆密码
private static final long serialVersionUID = 1L;
// 用于处理拖动事件,表示鼠标按下时的坐标,相对于JFrame
int xOld = 0;
int yOld = 0;
class LoginOKAction implements ActionListener {
public void actionPerformed(ActionEvent e) {
setVisible(false);
// new MainFrame().setVisible(true);
}
}
class LoginCanselAction implements ActionListener {
public void actionPerformed(ActionEvent e) {
System.exit(0);
}
}
public LoginFrame() {
super();
initialize();
}
public void initialize() {
this.setLayout(null);
// 处理拖动事件
this.addMouseListener(new MouseAdapter() {
@Override
public void mousePressed(MouseEvent e) {
xOld = e.getX();
yOld = e.getY();
}
});
this.addMouseMotionListener(new MouseMotionAdapter() {
@Override
public void mouseDragged(MouseEvent e) {
int xOnScreen = e.getXOnScreen();
int yOnScreen = e.getYOnScreen();
int xx = xOnScreen - xOld;
int yy = yOnScreen - yOld;
LoginFrame.this.setLocation(xx, yy);
}
});
layeredPane.setBounds(0, 0, 600, 544);
this.add(layeredPane);
// 背景Panel
bgPanel.setBounds(0, 0, 600, 544);
layeredPane.add(bgPanel, new Integer(Integer.MIN_VALUE));
// 背景图片,添加到背景Panel里面
JLabel bgLabel = new JLabel(bgImage);
bgPanel.add(bgLabel);
JPanel jp = (JPanel) this.getContentPane();
jp.setOpaque(false);
//logo界面, 传播企业文化
logoPanel.setBounds(50, 150, 150, 170);
logoPanel.setLayout(null);
logoPanel.setBackground(Color.WHITE);
logoPanel.setBorder(BorderFactory.createTitledBorder(""));
// logoPanel.setBorder(BorderFactory.createLineBorder(logoFramColor));
layeredPane.add(logoPanel);
JLabel logo = new JLabel(lgImage);
logoPanel.add(logo);
logo.setBounds(new Rectangle(0, 0, 150, 150));
// 主界面,登陆界面,包含服务器ip,用户名,密码等
mainPanel.setBounds(200, 150, 350, 170);
mainPanel.setLayout(null);
mainPanel.setBackground(mainPaneColor);
mainPanel.setBorder(BorderFactory.createTitledBorder(""));
// mainPanel.setBorder(BorderFactory.createLineBorder(mainFrameColor));
layeredPane.add(mainPanel);
mainPanel.add(server_ip);
server_ip.setBounds(new Rectangle(25, 40, 62, 25));
server_ip.setFont(new java.awt.Font("微软雅黑", 1, 14));
mainPanel.add(user_name);
user_name.setBounds(new Rectangle(25, 70, 62, 25));
user_name.setFont(new java.awt.Font("微软雅黑", 1, 14));
mainPanel.add(user_password);
user_password.setBounds(new Rectangle(25, 100, 62, 25));
user_password.setFont(new java.awt.Font("微软雅黑", 1, 14));
String[] default_ip={"127.0.0.1:8080"};
text_ip = new JComboBox(default_ip);
mainPanel.add(text_ip);
text_ip.setBounds(new Rectangle(95, 40, 240 , 25));
text_ip.setFont(new java.awt.Font("微软雅黑", 1, 12));
text_ip.setEditable(true);
mainPanel.add(text_name);
text_name.setBounds(new Rectangle(95, 70, 240, 25));
text_name.setFont(new java.awt.Font("微软雅黑", 1, 12));
mainPanel.add(text_password);
text_password.setBounds(new Rectangle(95, 100, 240, 25));
text_password.setFont(new Font("", Font.PLAIN, 30)); // 设置回显字符大小
mainPanel.add(button_ok);
button_ok.setBounds(new Rectangle(115, 130, 80, 25));
button_ok.addActionListener(new LoginOKAction()); // 给按钮加事件监听器
button_ok.setFont(new java.awt.Font("微软雅黑", 1, 12));
mainPanel.add(button_cansel);
button_cansel.setBounds(new Rectangle(225, 130, 80, 25));
button_cansel.addActionListener(new LoginOKAction()); // 给按钮加事件监听器
button_cansel.setFont(new java.awt.Font("微软雅黑", 1, 12));
this.setBounds(0, 0, 600, 544);
this.setUndecorated(true);
this.setLocationRelativeTo(null);
this.setVisible(true);
}
public static void main(String[] args) {
// TODO Auto-generated method stub
new LoginFrame();
}
}
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