src/main/java/com/wsf/mathapp/controller/SceneManager.java

@@ -6,7 +6,7 @@ import javafx.stage.Stage;
 public class SceneManager {
   private final Stage primaryStage;
   private final LoginView loginView;
-  private final RegisterView registerView;
+  private RegisterView registerView;
   private final MainMenuView mainMenuView;
   private final LevelSelectionView levelSelectionView;
   private final QuestionCountView questionCountView;
@@ -31,12 +31,14 @@ public class SceneManager {
 
   public void showLoginView() {
     System.out.println("切换到登录界面");
+    loginView.clearFields();
     primaryStage.setScene(loginView.getScene());
     primaryStage.show();
   }
 
   public void showRegisterView() {
     System.out.println("切换到注册界面");
+    registerView.clearFields();
     primaryStage.setScene(registerView.getScene());
     primaryStage.show();
   }

src/main/java/com/wsf/mathapp/view/LoginView.java

@@ -15,6 +15,11 @@ public class LoginView {
   private Scene scene;
   private final SceneManager sceneManager;
 
+  // 将UI组件声明为类的成员变量
+  private TextField usernameOrEmailField;
+  private PasswordField passwordField;
+  private Label statusLabel;
+
   public LoginView(SceneManager sceneManager) {
     this.sceneManager = sceneManager;
     createScene();
@@ -32,12 +37,12 @@ public class LoginView {
     subtitleLabel.setFont(Font.font(18));
 
     // 修改提示文本
-    TextField usernameOrEmailField = new TextField();
+    usernameOrEmailField = new TextField();
     usernameOrEmailField.setPromptText("请输入用户名或邮箱");
     usernameOrEmailField.setMaxWidth(300);
     usernameOrEmailField.setPrefHeight(40);
 
-    PasswordField passwordField = new PasswordField();
+    passwordField = new PasswordField();
     passwordField.setPromptText("请输入密码");
     passwordField.setMaxWidth(300);
     passwordField.setPrefHeight(40);
@@ -50,7 +55,7 @@ public class LoginView {
     registerButton.setStyle("-fx-background-color: #2196F3; -fx-text-fill: white; -fx-font-size: 14px;");
     registerButton.setPrefSize(300, 40);
 
-    Label statusLabel = new Label();
+    statusLabel = new Label();
 
     loginButton.setOnAction(e -> {
       String usernameOrEmail = usernameOrEmailField.getText().trim();
@@ -97,6 +102,15 @@ public class LoginView {
     scene = new Scene(root, 400, 500);
   }
 
+  /**
+   * 清空所有输入字段和状态信息
+   */
+  public void clearFields() {
+    usernameOrEmailField.clear();
+    passwordField.clear();
+    statusLabel.setText("");
+  }
+
   private void showError(Label label, String message) {
     label.setText(message);
     label.setStyle("-fx-text-fill: red;");

src/main/java/com/wsf/mathapp/view/MainMenuView.java

@@ -3,6 +3,7 @@ package com.wsf.mathapp.view;
 import com.wsf.mathapp.controller.SceneManager;
 import com.ybw.mathapp.util.ChangePassword;
 import com.ybw.mathapp.util.Login;
+import com.ybw.mathapp.util.Register;
 import javafx.geometry.Insets;
 import javafx.geometry.Pos;
 import javafx.scene.Scene;
@@ -187,7 +188,7 @@ public class MainMenuView {
     oldPassword.setPrefWidth(200);
 
     javafx.scene.control.PasswordField newPassword = new javafx.scene.control.PasswordField();
-    newPassword.setPromptText("请输入新密码");
+    newPassword.setPromptText("请输入新密码（密码要6-10位，包含大，小写字母和数字）");
     newPassword.setPrefWidth(200);
 
     javafx.scene.control.PasswordField confirmPassword = new javafx.scene.control.PasswordField();
@@ -228,10 +229,14 @@ public class MainMenuView {
           showAlert("错误", "两次输入的新密码不一致！");
           return null;
         }
-
+        if (!Register.isVaildPassword(newPwd)) {
+          showAlert("错误", "密码要6-10位，包含大，小写字母和数字");
+          return null;
+        }
         // 调用修改密码的后端逻辑
         if(!ChangePassword.changePassword(currentUsername, confirmPwd)){
           showAlert("错误", "密码修改失败");
+          return null;
         }
         else{
           showAlert("成功", "密码修改成功！");

src/main/java/com/wsf/mathapp/view/RegisterView.java

@@ -16,6 +16,15 @@ public class RegisterView {
   private Scene scene;
   private final SceneManager sceneManager;
 
+  // 将UI组件声明为类的成员变量
+  private TextField usernameField;
+  private TextField emailField;
+  private TextField codeField;
+  private PasswordField passwordField;
+  private PasswordField confirmPasswordField;
+  private Label statusLabel;
+  private Button sendCodeButton;
+
   public RegisterView(SceneManager sceneManager) {
     this.sceneManager = sceneManager;
     createScene();
@@ -30,31 +39,31 @@ public class RegisterView {
     titleLabel.setFont(Font.font(20));
 
     // 添加用户名输入框
-    TextField usernameField = new TextField();
+    usernameField = new TextField();
     usernameField.setPromptText("请输入用户名(3-20位字母、数字、下划线)");
     usernameField.setMaxWidth(300);
     usernameField.setPrefHeight(35);
 
-    TextField emailField = new TextField();
+    emailField = new TextField();
     emailField.setPromptText("请输入邮箱");
     emailField.setMaxWidth(300);
     emailField.setPrefHeight(35);
 
-    Button sendCodeButton = new Button("发送验证码");
+    sendCodeButton = new Button("发送验证码");
     sendCodeButton.setStyle("-fx-background-color: #FF9800; -fx-text-fill: white;");
     sendCodeButton.setPrefSize(120, 35);
 
-    TextField codeField = new TextField();
+    codeField = new TextField();
     codeField.setPromptText("请输入验证码");
     codeField.setMaxWidth(300);
     codeField.setPrefHeight(35);
 
-    PasswordField passwordField = new PasswordField();
+    passwordField = new PasswordField();
     passwordField.setPromptText("请输入密码(6-10位，含大小写字母和数字)");
     passwordField.setMaxWidth(300);
     passwordField.setPrefHeight(35);
 
-    PasswordField confirmPasswordField = new PasswordField();
+    confirmPasswordField = new PasswordField();
     confirmPasswordField.setPromptText("请再次输入密码");
     confirmPasswordField.setMaxWidth(300);
     confirmPasswordField.setPrefHeight(35);
@@ -67,7 +76,7 @@ public class RegisterView {
     backButton.setStyle("-fx-background-color: #757575; -fx-text-fill: white;");
     backButton.setPrefSize(300, 35);
 
-    Label statusLabel = new Label();
+    statusLabel = new Label();
 
     sendCodeButton.setOnAction(e -> {
       String username = usernameField.getText().trim();
@@ -159,7 +168,8 @@ public class RegisterView {
 
       if (Register.register(username, email, password)) {
         showSuccess(statusLabel, "注册成功！用户名: " + username);
-        sceneManager.showLoginView();
+        sceneManager.setCurrentUserName(username);
+        sceneManager.showMainMenuView();
       } else {
         showError(statusLabel, "注册失败，请检查信息！");
       }
@@ -185,6 +195,22 @@ public class RegisterView {
     scene = new Scene(root, 400, 550); // 增加高度以适应新字段
   }
 
+  /**
+   * 清空所有输入字段和状态信息
+   */
+  public void clearFields() {
+    usernameField.clear();
+    emailField.clear();
+    codeField.clear();
+    passwordField.clear();
+    confirmPasswordField.clear();
+    statusLabel.setText("");
+
+    // 重置发送验证码按钮状态
+    sendCodeButton.setText("发送验证码");
+    sendCodeButton.setDisable(false);
+  }
+
   private void startCountdown(Button button) {
     new Thread(() -> {
       try {
@@ -218,12 +244,13 @@ public class RegisterView {
   public Scene getScene() {
     return scene;
   }
+
   public static boolean isValidUsername(String username) {
     if (username == null || username.trim().isEmpty()) {
       return false;
     }
-    // 用户名规则：只能包含英文字母和数字
-    String usernameRegex = "^[a-zA-Z0-9]{3,100}$";
+    // 用户名规则：只包含英文字母和数字，不限制长度
+    String usernameRegex = "^[a-zA-Z0-9]+$";
     return Pattern.matches(usernameRegex, username.trim());
   }
-}
+}

users.txt

@@ -1,2 +1,2 @@
-wsf,3310207578@qq.com,Wsf1234
 ybw,1798231811@qq.com,Ybw1234
+wsf,3310207578@qq.com,Wsf1234