From 4ebc155285fbe994b7ba4ae12a05e6b417a5ab79 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=9D=A8=E9=BB=98=E6=B6=B5?=
 <15530826+wgll926@user.noreply.gitee.com>
Date: Sat, 11 Oct 2025 15:13:05 +0800
Subject: [PATCH] =?UTF-8?q?=E6=B7=BB=E5=8A=A0=E6=B3=A8=E5=86=8C=E5=8A=9F?=
 =?UTF-8?q?=E8=83=BD=E5=B9=B6=E5=AE=8C=E5=96=84=E9=82=AE=E7=AE=B1=E9=AA=8C?=
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MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../mathsystemtogether/EmailService.java      | 186 +++++++++++
 .../RegisterController.java                   | 310 ++++++++++++++++++
 .../mathsystemtogether/register-view.fxml     | 131 ++++++++
 src/main/resources/mail.properties            |  43 +++
 user_data.txt                                 |   1 +
 5 files changed, 671 insertions(+)
 create mode 100644 src/main/java/com/example/mathsystemtogether/EmailService.java
 create mode 100644 src/main/java/com/example/mathsystemtogether/RegisterController.java
 create mode 100644 src/main/resources/com/example/mathsystemtogether/register-view.fxml
 create mode 100644 src/main/resources/mail.properties
 create mode 100644 user_data.txt

diff --git a/src/main/java/com/example/mathsystemtogether/EmailService.java b/src/main/java/com/example/mathsystemtogether/EmailService.java
new file mode 100644
index 0000000..b5f5155
--- /dev/null
+++ b/src/main/java/com/example/mathsystemtogether/EmailService.java
@@ -0,0 +1,186 @@
+package com.example.mathsystemtogether;
+
+import jakarta.mail.*;
+import jakarta.mail.internet.*;
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.Properties;
+import java.util.Random;
+
+/**
+ * 邮件服务类
+ * 负责发送验证码邮件
+ */
+public class EmailService {
+    
+    private String smtpHost;
+    private String smtpPort;
+    private String fromEmail;
+    private String fromPassword;
+    private Session session;
+    private boolean isConfigured = false;
+    
+    public EmailService() {
+        loadConfiguration();
+        if (isConfigured) {
+            initializeSession();
+        }
+    }
+    
+    /**
+     * 从配置文件加载邮件配置
+     */
+    private void loadConfiguration() {
+        try (InputStream input = getClass().getClassLoader().getResourceAsStream("mail.properties")) {
+        if (input == null) {
+            return;
+        }
+            
+            Properties props = new Properties();
+            props.load(input);
+            
+            smtpHost = props.getProperty("mail.smtp.host");
+            smtpPort = props.getProperty("mail.smtp.port");
+            fromEmail = props.getProperty("mail.from.email");
+            fromPassword = props.getProperty("mail.from.password");
+            
+            // 检查配置是否完整
+            if (smtpHost != null && smtpPort != null && fromEmail != null && fromPassword != null) {
+                isConfigured = true;
+            }
+            
+        } catch (IOException e) {
+            // 配置加载失败，静默处理
+        }
+    }
+    
+    /**
+     * 初始化邮件会话
+     */
+    private void initializeSession() {
+        if (!isConfigured) {
+            return;
+        }
+        
+        Properties props = new Properties();
+        props.put("mail.smtp.host", smtpHost);
+        props.put("mail.smtp.port", smtpPort);
+        props.put("mail.smtp.auth", "true");
+        props.put("mail.smtp.starttls.enable", "true");
+        props.put("mail.smtp.ssl.trust", smtpHost);
+        
+        // 创建认证器
+        Authenticator authenticator = new Authenticator() {
+            @Override
+            protected PasswordAuthentication getPasswordAuthentication() {
+                return new PasswordAuthentication(fromEmail, fromPassword);
+            }
+        };
+        
+        session = Session.getInstance(props, authenticator);
+    }
+    
+    /**
+     * 生成6位数字验证码
+     */
+    public String generateVerificationCode() {
+        Random random = new Random();
+        return String.format("%06d", random.nextInt(1000000));
+    }
+    
+    /**
+     * 发送验证码邮件
+     * @param toEmail 接收方邮箱
+     * @param verificationCode 验证码
+     * @return 发送是否成功
+     */
+    public boolean sendVerificationCode(String toEmail, String verificationCode) {
+        if (!isConfigured) {
+            return false;
+        }
+        
+        try {
+            Message message = new MimeMessage(session);
+            message.setFrom(new InternetAddress(fromEmail));
+            message.setRecipients(Message.RecipientType.TO, InternetAddress.parse(toEmail));
+            message.setSubject("数学考试系统 - 邮箱验证码");
+            
+            // 创建邮件内容
+            String htmlContent = createEmailContent(verificationCode);
+            message.setContent(htmlContent, "text/html; charset=UTF-8");
+            
+            // 发送邮件
+            Transport.send(message);
+            return true;
+            
+        } catch (MessagingException e) {
+            return false;
+        }
+    }
+    
+    /**
+     * 创建邮件HTML内容
+     */
+    private String createEmailContent(String verificationCode) {
+        StringBuilder html = new StringBuilder();
+        html.append("<!DOCTYPE html>");
+        html.append("<html>");
+        html.append("<head>");
+        html.append("<meta charset=\"UTF-8\">");
+        html.append("<title>邮箱验证码</title>");
+        html.append("<style>");
+        html.append("body { font-family: Arial, sans-serif; background-color: #f5f5f5; margin: 0; padding: 20px; }");
+        html.append(".container { max-width: 600px; margin: 0 auto; background-color: white; border-radius: 10px; box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1); overflow: hidden; }");
+        html.append(".header { background: linear-gradient(135deg, #8A2BE2, #9932CC); color: white; padding: 30px; text-align: center; }");
+        html.append(".header h1 { margin: 0; font-size: 24px; }");
+        html.append(".content { padding: 30px; }");
+        html.append(".verification-code { background-color: #f8f9fa; border: 2px solid #8A2BE2; border-radius: 8px; padding: 20px; text-align: center; margin: 20px 0; }");
+        html.append(".code { font-size: 32px; font-weight: bold; color: #8A2BE2; letter-spacing: 5px; margin: 10px 0; }");
+        html.append(".footer { background-color: #f8f9fa; padding: 20px; text-align: center; color: #666; font-size: 14px; }");
+        html.append(".warning { background-color: #fff3cd; border: 1px solid #ffeaa7; border-radius: 5px; padding: 15px; margin: 20px 0; color: #856404; }");
+        html.append("</style>");
+        html.append("</head>");
+        html.append("<body>");
+        html.append("<div class=\"container\">");
+        html.append("<div class=\"header\">");
+        html.append("<h1>数学考试系统</h1>");
+        html.append("<p>邮箱验证码</p>");
+        html.append("</div>");
+        html.append("<div class=\"content\">");
+        html.append("<h2>您好！</h2>");
+        html.append("<p>您正在注册数学考试系统，请使用以下验证码完成注册：</p>");
+        html.append("<div class=\"verification-code\">");
+        html.append("<p><strong>验证码：</strong></p>");
+        html.append("<div class=\"code\">").append(verificationCode).append("</div>");
+        html.append("</div>");
+        html.append("<div class=\"warning\">");
+        html.append("<p><strong>重要提示：</strong></p>");
+        html.append("<ul>");
+        html.append("<li>验证码有效期为 <strong>5分钟</strong></li>");
+        html.append("<li>请勿将验证码泄露给他人</li>");
+        html.append("<li>如非本人操作，请忽略此邮件</li>");
+        html.append("</ul>");
+        html.append("</div>");
+        html.append("<p>如果您没有注册数学考试系统，请忽略此邮件。</p>");
+        html.append("<p>祝您使用愉快！</p>");
+        html.append("<p><strong>数学考试系统团队</strong></p>");
+        html.append("</div>");
+        html.append("<div class=\"footer\">");
+        html.append("<p>此邮件由系统自动发送，请勿回复</p>");
+        html.append("<p>2024 数学考试系统. All rights reserved.</p>");
+        html.append("</div>");
+        html.append("</div>");
+        html.append("</body>");
+        html.append("</html>");
+        
+        return html.toString();
+    }
+    
+    
+    /**
+     * 检查邮件服务是否可用
+     */
+    public boolean isAvailable() {
+        return isConfigured && session != null;
+    }
+}
diff --git a/src/main/java/com/example/mathsystemtogether/RegisterController.java b/src/main/java/com/example/mathsystemtogether/RegisterController.java
new file mode 100644
index 0000000..9939189
--- /dev/null
+++ b/src/main/java/com/example/mathsystemtogether/RegisterController.java
@@ -0,0 +1,310 @@
+package com.example.mathsystemtogether;
+
+import javafx.fxml.FXML;
+import javafx.fxml.FXMLLoader;
+import javafx.scene.Scene;
+import javafx.scene.control.*;
+import javafx.stage.Stage;
+import javafx.collections.FXCollections;
+import javafx.collections.ObservableList;
+import java.util.*;
+import java.util.regex.Pattern;
+import java.io.*;
+import java.nio.file.Files;
+import java.nio.file.Paths;
+import java.nio.file.StandardOpenOption;
+
+/**
+ * 注册控制器
+ */
+public class RegisterController {
+
+    @FXML private TextField usernameField;
+    @FXML private PasswordField passwordField;
+    @FXML private PasswordField confirmPasswordField;
+    @FXML private TextField emailField;
+    @FXML private TextField verificationCodeField;
+    @FXML private Button sendCodeButton;
+    @FXML private Button registerButton;
+    @FXML private Button backToLoginButton;
+    @FXML private ComboBox<String> levelComboBox;
+    @FXML private Label statusLabel;
+
+    // 验证码相关
+    private String generatedCode;
+    private long codeGenerationTime;
+    private static final int CODE_VALIDITY_MINUTES = 5;
+    private static final String EMAIL_REGEX = "^[A-Za-z0-9+_.-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,}$";
+    private static final Pattern EMAIL_PATTERN = Pattern.compile(EMAIL_REGEX);
+    
+    // 用户数据文件路径
+    private static final String USER_DATA_FILE = "user_data.txt";
+    
+    // 邮件服务
+    private EmailService emailService;
+
+    @FXML
+    public void initialize() {
+        setupLevelComboBox();
+        // 初始化时禁用注册按钮
+        registerButton.setDisable(true);
+        // 初始化邮件服务
+        emailService = new EmailService();
+        
+        // 检查邮件服务配置
+        if (!emailService.isAvailable()) {
+            showStatus("⚠️ 邮件服务未配置，请检查mail.properties文件", true);
+        }
+    }
+
+    private void setupLevelComboBox() {
+        ObservableList<String> levels = FXCollections.observableArrayList("小学", "初中", "高中");
+        levelComboBox.setItems(levels);
+        levelComboBox.setValue("小学");
+    }
+
+    @FXML
+    private void handleSendCode() {
+        String email = emailField.getText().trim();
+        
+        if (email.isEmpty()) {
+            showStatus("请输入邮箱地址", true);
+            return;
+        }
+        
+        if (!isValidEmail(email)) {
+            showStatus("请输入有效的邮箱地址", true);
+            return;
+        }
+        
+        // 检查邮件服务是否可用
+        if (!emailService.isAvailable()) {
+            showStatus("❌ 邮件服务不可用，请检查配置", true);
+            return;
+        }
+        
+        // 生成6位数字验证码
+        generatedCode = emailService.generateVerificationCode();
+        codeGenerationTime = System.currentTimeMillis();
+        
+        // 发送真实邮件
+        showStatus("📤 正在发送验证码到邮箱：" + email + "，请稍候...", false);
+        
+        // 在后台线程中发送邮件
+        new Thread(() -> {
+            boolean success = emailService.sendVerificationCode(email, generatedCode);
+            
+            javafx.application.Platform.runLater(() -> {
+                if (success) {
+                    showStatus("✅ 验证码已发送到邮箱：" + email + "，请查收邮件", false);
+                    // 启用注册按钮
+                    registerButton.setDisable(false);
+                } else {
+                    showStatus("❌ 邮件发送失败，请检查邮箱地址或稍后重试", true);
+                    // 显示验证码用于调试（仅开发环境）
+                    showStatus("❌ 邮件发送失败，请检查邮箱地址或稍后重试。验证码：" + generatedCode + "（调试用）", true);
+                }
+            });
+        }).start();
+        
+        // 禁用发送按钮60秒
+        sendCodeButton.setDisable(true);
+        sendCodeButton.setText("60秒后可重发");
+        
+        // 启动倒计时
+        startCountdown();
+    }
+
+    @FXML
+    private void handleRegister() {
+        String username = usernameField.getText().trim();
+        String password = passwordField.getText();
+        String confirmPassword = confirmPasswordField.getText();
+        String email = emailField.getText().trim();
+        String verificationCode = verificationCodeField.getText().trim();
+        String level = levelComboBox.getValue();
+
+        // 验证输入
+        if (username.isEmpty() || password.isEmpty() || confirmPassword.isEmpty() || 
+            email.isEmpty() || verificationCode.isEmpty()) {
+            showStatus("请填写所有字段", true);
+            return;
+        }
+
+        if (username.length() < 3) {
+            showStatus("用户名至少需要3个字符", true);
+            return;
+        }
+
+        if (password.length() < 6) {
+            showStatus("密码至少需要6个字符", true);
+            return;
+        }
+
+        if (!password.equals(confirmPassword)) {
+            showStatus("两次输入的密码不一致", true);
+            return;
+        }
+
+        if (!isValidEmail(email)) {
+            showStatus("请输入有效的邮箱地址", true);
+            return;
+        }
+
+        // 验证验证码
+        if (!verifyCode(verificationCode)) {
+            showStatus("验证码错误或已过期", true);
+            return;
+        }
+
+        // 检查用户名是否已存在
+        if (isUserExists(username)) {
+            showStatus("用户名已存在，请选择其他用户名", true);
+            return;
+        }
+
+        // 检查邮箱是否已注册
+        if (isEmailExists(email)) {
+            showStatus("该邮箱已被注册", true);
+            return;
+        }
+
+        // 保存用户信息
+        if (saveUserData(username, password, email, level)) {
+            showStatus("注册成功！正在跳转到登录界面...", false);
+            
+            // 延迟跳转到登录界面
+            Timer timer = new Timer();
+            timer.schedule(new TimerTask() {
+                @Override
+                public void run() {
+                    javafx.application.Platform.runLater(() -> {
+                        handleBackToLogin();
+                    });
+                }
+            }, 2000);
+        } else {
+            showStatus("注册失败，请重试", true);
+        }
+    }
+
+    @FXML
+    private void handleBackToLogin() {
+        try {
+            // 关闭当前窗口
+            Stage currentStage = (Stage) backToLoginButton.getScene().getWindow();
+            currentStage.close();
+            
+            // 打开登录界面
+            FXMLLoader loader = new FXMLLoader(getClass().getResource("exam-view.fxml"));
+            Scene scene = new Scene(loader.load(), 900, 900);
+            Stage loginStage = new Stage();
+            loginStage.setTitle("数学考试系统 - 登录");
+            loginStage.setScene(scene);
+            loginStage.setResizable(true);
+            loginStage.show();
+            
+        } catch (Exception e) {
+            showStatus("跳转失败：" + e.getMessage(), true);
+        }
+    }
+
+
+    private boolean verifyCode(String inputCode) {
+        if (generatedCode == null) {
+            return false;
+        }
+        
+        // 检查验证码是否过期
+        long currentTime = System.currentTimeMillis();
+        long elapsedMinutes = (currentTime - codeGenerationTime) / (1000 * 60);
+        
+        if (elapsedMinutes > CODE_VALIDITY_MINUTES) {
+            return false;
+        }
+        
+        return generatedCode.equals(inputCode);
+    }
+
+    private boolean isValidEmail(String email) {
+        return EMAIL_PATTERN.matcher(email).matches();
+    }
+
+    private boolean isUserExists(String username) {
+        try {
+            if (!Files.exists(Paths.get(USER_DATA_FILE))) {
+                return false;
+            }
+            
+            List<String> lines = Files.readAllLines(Paths.get(USER_DATA_FILE));
+            for (String line : lines) {
+                if (line.startsWith(username + "|")) {
+                    return true;
+                }
+            }
+        } catch (IOException e) {
+            System.err.println("检查用户存在性时出错：" + e.getMessage());
+        }
+        return false;
+    }
+
+    private boolean isEmailExists(String email) {
+        try {
+            if (!Files.exists(Paths.get(USER_DATA_FILE))) {
+                return false;
+            }
+            
+            List<String> lines = Files.readAllLines(Paths.get(USER_DATA_FILE));
+            for (String line : lines) {
+                String[] parts = line.split("\\|");
+                if (parts.length >= 3 && parts[2].equals(email)) {
+                    return true;
+                }
+            }
+        } catch (IOException e) {
+            System.err.println("检查邮箱存在性时出错：" + e.getMessage());
+        }
+        return false;
+    }
+
+    private boolean saveUserData(String username, String password, String email, String level) {
+        try {
+            String userData = username + "|" + password + "|" + email + "|" + level + "|" + System.currentTimeMillis() + "\n";
+            Files.write(Paths.get(USER_DATA_FILE), userData.getBytes(), StandardOpenOption.CREATE, StandardOpenOption.APPEND);
+            return true;
+        } catch (IOException e) {
+            System.err.println("保存用户数据时出错：" + e.getMessage());
+            return false;
+        }
+    }
+
+    private void showStatus(String message, boolean isError) {
+        statusLabel.setText(message);
+        if (isError) {
+            statusLabel.setStyle("-fx-text-fill: #DC143C; -fx-font-weight: bold; -fx-font-size: 14;");
+        } else {
+            statusLabel.setStyle("-fx-text-fill: #228B22; -fx-font-weight: bold; -fx-font-size: 14;");
+        }
+    }
+
+    private void startCountdown() {
+        Timer timer = new Timer();
+        timer.schedule(new TimerTask() {
+            int countdown = 60;
+            
+            @Override
+            public void run() {
+                javafx.application.Platform.runLater(() -> {
+                    if (countdown > 0) {
+                        sendCodeButton.setText(countdown + "秒后可重发");
+                        countdown--;
+                    } else {
+                        sendCodeButton.setDisable(false);
+                        sendCodeButton.setText("📤 发送验证码");
+                        timer.cancel();
+                    }
+                });
+            }
+        }, 0, 1000);
+    }
+}
diff --git a/src/main/resources/com/example/mathsystemtogether/register-view.fxml b/src/main/resources/com/example/mathsystemtogether/register-view.fxml
new file mode 100644
index 0000000..da5f9f4
--- /dev/null
+++ b/src/main/resources/com/example/mathsystemtogether/register-view.fxml
@@ -0,0 +1,131 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<?import javafx.geometry.Insets?>
+<?import javafx.scene.control.*?>
+<?import javafx.scene.layout.*?>
+<?import javafx.scene.text.Font?>
+<?import javafx.scene.effect.DropShadow?>
+<?import javafx.scene.paint.LinearGradient?>
+<?import javafx.scene.paint.Stop?>
+
+<BorderPane xmlns="http://javafx.com/javafx/11.0.1" xmlns:fx="http://javafx.com/fxml/1" fx:controller="com.example.mathsystemtogether.RegisterController" style="-fx-background-color: linear-gradient(to bottom, #6A0DAD, #4B0082, #2E0854);">
+   <top>
+      <VBox spacing="15.0" style="-fx-background-color: linear-gradient(to right, #8A2BE2, #9932CC, #8B008B); -fx-background-radius: 15; -fx-padding: 20;">
+         <padding>
+            <Insets bottom="15.0" left="20.0" right="20.0" top="20.0"/>
+         </padding>
+         <Label text="🎓 用户注册" textFill="white" textAlignment="CENTER" style="-fx-effect: dropshadow(gaussian, rgba(0,0,0,0.5), 10, 0, 0, 2);">
+            <font>
+               <Font name="System Bold" size="28.0"/>
+            </font>
+         </Label>
+         <Label text="✨ 创建新账户 · 邮箱验证 · 安全可靠" textFill="#E6E6FA" textAlignment="CENTER">
+            <font>
+               <Font name="System" size="14.0"/>
+            </font>
+         </Label>
+      </VBox>
+   </top>
+   <center>
+      <VBox spacing="10.0">
+         <padding>
+            <Insets bottom="10.0" left="15.0" right="15.0" top="10.0"/>
+         </padding>
+
+         <!-- 注册区域 -->
+         <VBox spacing="15.0" style="-fx-background-color: linear-gradient(to bottom, #E6E6FA, #D8BFD8, #DDA0DD); -fx-padding: 20; -fx-background-radius: 15; -fx-effect: dropshadow(gaussian, rgba(139,0,139,0.3), 15, 0, 0, 5);">
+            <Label text="📝 填写注册信息" textFill="#4B0082" textAlignment="CENTER">
+               <font>
+                  <Font name="System Bold" size="18.0"/>
+               </font>
+            </Label>
+            
+            <!-- 用户名输入 -->
+            <HBox spacing="15.0" alignment="CENTER_LEFT">
+               <Label text="👤 用户名:" minWidth="100.0" textFill="#6A0DAD">
+                  <font>
+                     <Font name="System Bold" size="14.0"/>
+                  </font>
+               </Label>
+               <TextField fx:id="usernameField" promptText="请输入用户名" prefWidth="200.0" style="-fx-background-color: white; -fx-background-radius: 8; -fx-border-color: #8A2BE2; -fx-border-radius: 8; -fx-border-width: 2; -fx-padding: 8;"/>
+            </HBox>
+            
+            <!-- 密码输入 -->
+            <HBox spacing="15.0" alignment="CENTER_LEFT">
+               <Label text="🔑 密码:" minWidth="100.0" textFill="#6A0DAD">
+                  <font>
+                     <Font name="System Bold" size="14.0"/>
+                  </font>
+               </Label>
+               <PasswordField fx:id="passwordField" promptText="请输入密码" prefWidth="200.0" style="-fx-background-color: white; -fx-background-radius: 8; -fx-border-color: #8A2BE2; -fx-border-radius: 8; -fx-border-width: 2; -fx-padding: 8;"/>
+            </HBox>
+            
+            <!-- 确认密码输入 -->
+            <HBox spacing="15.0" alignment="CENTER_LEFT">
+               <Label text="🔒 确认密码:" minWidth="100.0" textFill="#6A0DAD">
+                  <font>
+                     <Font name="System Bold" size="14.0"/>
+                  </font>
+               </Label>
+               <PasswordField fx:id="confirmPasswordField" promptText="请再次输入密码" prefWidth="200.0" style="-fx-background-color: white; -fx-background-radius: 8; -fx-border-color: #8A2BE2; -fx-border-radius: 8; -fx-border-width: 2; -fx-padding: 8;"/>
+            </HBox>
+            
+            <!-- 邮箱输入 -->
+            <HBox spacing="15.0" alignment="CENTER_LEFT">
+               <Label text="📧 邮箱:" minWidth="100.0" textFill="#6A0DAD">
+                  <font>
+                     <Font name="System Bold" size="14.0"/>
+                  </font>
+               </Label>
+               <TextField fx:id="emailField" promptText="请输入邮箱地址" prefWidth="200.0" style="-fx-background-color: white; -fx-background-radius: 8; -fx-border-color: #8A2BE2; -fx-border-radius: 8; -fx-border-width: 2; -fx-padding: 8;"/>
+            </HBox>
+            
+            <!-- 验证码输入 -->
+            <HBox spacing="15.0" alignment="CENTER_LEFT">
+               <Label text="🔢 验证码:" minWidth="100.0" textFill="#6A0DAD">
+                  <font>
+                     <Font name="System Bold" size="14.0"/>
+                  </font>
+               </Label>
+               <TextField fx:id="verificationCodeField" promptText="请输入验证码" prefWidth="120.0" style="-fx-background-color: white; -fx-background-radius: 8; -fx-border-color: #8A2BE2; -fx-border-radius: 8; -fx-border-width: 2; -fx-padding: 8;"/>
+               <Button fx:id="sendCodeButton" text="📤 发送验证码" onAction="#handleSendCode" style="-fx-background-color: linear-gradient(to right, #32CD32, #228B22); -fx-text-fill: white; -fx-background-radius: 8; -fx-padding: 8 15; -fx-font-size: 12; -fx-font-weight: bold; -fx-effect: dropshadow(gaussian, rgba(0,0,0,0.3), 3, 0, 0, 1);"/>
+            </HBox>
+            
+            <!-- 难度级别选择 -->
+            <HBox spacing="15.0" alignment="CENTER_LEFT">
+               <Label text="📚 难度级别:" minWidth="100.0" textFill="#6A0DAD">
+                  <font>
+                     <Font name="System Bold" size="14.0"/>
+                  </font>
+               </Label>
+               <ComboBox fx:id="levelComboBox" prefWidth="140.0" style="-fx-background-color: white; -fx-background-radius: 8; -fx-border-color: #8A2BE2; -fx-border-radius: 8; -fx-border-width: 2;"/>
+            </HBox>
+            
+            <!-- 按钮区域 -->
+            <HBox spacing="15.0" alignment="CENTER">
+               <Button fx:id="registerButton" text="🚀 注册" onAction="#handleRegister" style="-fx-background-color: linear-gradient(to right, #8A2BE2, #9932CC); -fx-text-fill: white; -fx-background-radius: 10; -fx-padding: 12 25; -fx-font-size: 14; -fx-font-weight: bold; -fx-effect: dropshadow(gaussian, rgba(0,0,0,0.3), 5, 0, 0, 2);"/>
+               <Button fx:id="backToLoginButton" text="🔙 返回登录" onAction="#handleBackToLogin" style="-fx-background-color: linear-gradient(to right, #DC143C, #B22222); -fx-text-fill: white; -fx-background-radius: 10; -fx-padding: 12 25; -fx-font-size: 14; -fx-font-weight: bold; -fx-effect: dropshadow(gaussian, rgba(0,0,0,0.3), 5, 0, 0, 2);"/>
+            </HBox>
+            
+            <!-- 状态标签 -->
+            <Label fx:id="statusLabel" textFill="#8B0000" style="-fx-font-weight: bold; -fx-font-size: 14;" textAlignment="CENTER"/>
+         </VBox>
+
+         <!-- 注册说明 -->
+         <VBox spacing="15.0" style="-fx-background-color: linear-gradient(to bottom, #F8F0FF, #E6E6FA, #D8BFD8); -fx-padding: 20; -fx-background-radius: 15; -fx-effect: dropshadow(gaussian, rgba(139,0,139,0.2), 10, 0, 0, 3);">
+            <Label text="📖 注册说明" textFill="#4B0082" textAlignment="CENTER">
+               <font>
+                  <Font name="System Bold" size="16.0"/>
+               </font>
+            </Label>
+            <VBox spacing="8.0" style="-fx-padding: 10; -fx-background-color: rgba(255,255,255,0.8); -fx-background-radius: 10; -fx-effect: dropshadow(gaussian, rgba(139,0,139,0.1), 5, 0, 0, 2);">
+               <Label text="① 填写用户名、密码和邮箱信息" textFill="#6A0DAD" style="-fx-font-weight: bold;"/>
+               <Label text="② 点击'发送验证码'获取邮箱验证码" textFill="#6A0DAD" style="-fx-font-weight: bold;"/>
+               <Label text="③ 输入收到的验证码完成验证" textFill="#6A0DAD" style="-fx-font-weight: bold;"/>
+               <Label text="④ 选择适合的难度级别" textFill="#6A0DAD" style="-fx-font-weight: bold;"/>
+               <Label text="⑤ 点击'注册'完成账户创建" textFill="#6A0DAD" style="-fx-font-weight: bold;"/>
+            </VBox>
+         </VBox>
+      </VBox>
+   </center>
+</BorderPane>
diff --git a/src/main/resources/mail.properties b/src/main/resources/mail.properties
new file mode 100644
index 0000000..fbeb580
--- /dev/null
+++ b/src/main/resources/mail.properties
@@ -0,0 +1,43 @@
+# 邮件服务配置
+# QQ邮箱配置
+
+# QQ邮箱SMTP配置
+mail.smtp.host=smtp.qq.com
+mail.smtp.port=587
+mail.smtp.auth=true
+mail.smtp.starttls.enable=true
+mail.smtp.ssl.trust=smtp.qq.com
+
+# 发送方邮箱配置
+mail.from.email=1961004835@qq.com
+mail.from.password=nixyzbpbcrekhgfe
+
+# 其他邮箱服务商配置示例：
+
+# Gmail配置
+# mail.smtp.host=smtp.gmail.com
+# mail.smtp.port=587
+# mail.smtp.auth=true
+# mail.smtp.starttls.enable=true
+# mail.smtp.ssl.trust=smtp.gmail.com
+
+# 163邮箱配置
+# mail.smtp.host=smtp.163.com
+# mail.smtp.port=587
+# mail.smtp.auth=true
+# mail.smtp.starttls.enable=true
+# mail.smtp.ssl.trust=smtp.163.com
+
+# 126邮箱配置
+# mail.smtp.host=smtp.126.com
+# mail.smtp.port=587
+# mail.smtp.auth=true
+# mail.smtp.starttls.enable=true
+# mail.smtp.ssl.trust=smtp.126.com
+
+# 企业邮箱配置示例
+# mail.smtp.host=smtp.exmail.qq.com
+# mail.smtp.port=587
+# mail.smtp.auth=true
+# mail.smtp.starttls.enable=true
+# mail.smtp.ssl.trust=smtp.exmail.qq.com
diff --git a/user_data.txt b/user_data.txt
new file mode 100644
index 0000000..af77928
--- /dev/null
+++ b/user_data.txt
@@ -0,0 +1 @@
+wgll|123456|ymhlovesLQX@163.com|小学|1760162416490