Java swing 实现QQ登录注册页面

  代码如下
1 package com.lty;
  2 import javax.swing.*;
  3 import java.awt.*;
  4 import java.awt.event.ActionEvent;
  5 import java.awt.event.ActionListener;
  6 import java.util.Random;
  7 
  8 public class QQLoginPage {
  9     private JFrame frame;
 10     private char[] codeSequence = { 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'M', 'N', 'P', 'Q', 'R',
 11             'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', '2', '3', '4', '5', '6', '7', '8', '9' };
 12     private JTextField accountField;
 13     Font f1=new Font("宋体", Font.PLAIN, 14);   //设置字体
 14     private JPasswordField passwordField;
 15     private JLabel captchaLabel;
 16     private JTextField captchaField;
 17 
 18     public QQLoginPage() {
 19         JFrame.setDefaultLookAndFeelDecorated(true);
 20         frame = new JFrame("QQ登录");
 21         frame.setSize(350, 200);
 22         frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
 23         frame.setLayout(new FlowLayout());
 24         frame.setLocation(700,500);
 25         frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
 26         JLabel jp_jlb3=new JLabel("注册账号");
 27         jp_jlb3.setFont(f1);
 28         jp_jlb3.setForeground(Color.BLUE);
 29         jp_jlb3.setBounds(300, 10, 70,25);
 30         JLabel jp_jlb4=new JLabel("找回密码");
 31         jp_jlb4.setFont(f1);//设置"找回密码"字体
 32         jp_jlb4.setForeground(Color.BLUE); //设置"找回密码"字体颜色
 33         jp_jlb4.setBounds(300, 43, 70,25);
 34         JLabel accountLabel = new JLabel("账户：");
 35         accountField = new JTextField("账号/手机号",20);
 36         accountField.setForeground(Color.LIGHT_GRAY);
 37         accountField.setBounds(118, 11, 170,25);
 38         JLabel passwordLabel = new JLabel("密码：");
 39         passwordField = new JPasswordField(20);
 40         passwordField.setBounds(118, 11, 170,25);
 41         frame.add(accountLabel);
 42         frame.add(accountField);
 43         frame.add(jp_jlb3);
 44         frame.add(passwordLabel);
 45         frame.add(passwordField);
 46         frame.add(jp_jlb4);
 47         captchaLabel = new JLabel();
 48 
 49 
 50         JLabel captchaInputLabel = new JLabel("验证码：");
 51         captchaField = new JTextField(10);
 52         captchaField.setBounds(240,187,175,30);
 53         frame.add(captchaInputLabel);
 54         frame.add(captchaField);
 55 
 56         JButton refreshButton = new JButton("刷新");
 57         refreshCaptcha();
 58         refreshButton.addActionListener(new ActionListener() {
 59             @Override
 60             public void actionPerformed(ActionEvent e) {
 61                 refreshCaptcha();
 62             }
 63         });
 64 
 65         JButton loginButton = new JButton("登录");
 66         loginButton.addActionListener(new ActionListener() {
 67             @Override
 68             public void actionPerformed(ActionEvent e) {
 69                 String account = accountField.getText();
 70                 String password = new String(passwordField.getPassword());
 71                 String captchaInput = captchaField.getText();
 72 
 73                 if (validateCaptcha(captchaInput)) {
 74                     // 在这里执行登录逻辑
 75                     System.out.println("账户：" + account);
 76                     System.out.println("密码：" + password);
 77                     System.out.println("验证码：" + captchaInput);
 78                     JOptionPane.showMessageDialog(frame, "登录成功");
 79                 } else {
 80                     JOptionPane.showMessageDialog(frame, "验证码错误", "错误", JOptionPane.ERROR_MESSAGE);
 81                     refreshCaptcha();
 82                 }
 83             }
 84         });
 85         JCheckBox jp_jcb1=new JCheckBox("记住密码");
 86         jp_jcb1.setFont(f1);
 87         jp_jcb1.setBounds(114, 78, 90,20);
 88         JCheckBox jp_jcb2=new JCheckBox("自动登录");
 89         jp_jcb2.setFont(f1);
 90         jp_jcb2.setBounds(206, 78, 90,20);
 91         JButton jp_jb2=new JButton("注册");
 92         jp_jb2.setFont(f1);
 93         jp_jb2.setBounds(95, 120, 65,21);
 94         frame.add(captchaLabel);
 95         frame.add(refreshButton);
 96         frame.add(jp_jcb1);
 97         frame.add(jp_jcb2);
 98         frame.add(loginButton);
 99         frame.add(jp_jb2);
100         frame.setResizable(false);
101         frame.setIconImage(new ImageIcon("image/image.png").getImage());
102         frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
103 //        frame.pack();
104         frame.setVisible(true);
105     }
106 
107     private void refreshCaptcha() {
108         Random random = new Random();
109         String captcha="";
110         for(int i=0;i<4;i++){
111             captcha+=codeSequence[random.nextInt(codeSequence.length)];
112         }
113         captchaLabel.setText(String.valueOf(captcha));
114     }
115 
116     private boolean validateCaptcha(String captchaInput) {
117         String captcha = captchaLabel.getText();
118         return captcha.equals(captchaInput);
119     }
120 
121     public static void main(String[] args) {
122         new QQLoginPage();
123     }
124 }

运行结果如下

 可以刷新验证码，运用的流式结构。