java swing登录界面_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();

}

}