v2.2 添加了用户名功能，并测试基本功能

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

@@ -67,10 +67,12 @@ public class SceneManager {
     primaryStage.show(); // 添加这行
   }
 
-  public void showQuizView() {
-    System.out.println("切换到答题界面");
+  public void showQuizView(String level, int count) {
+    System.out.println("切换到答题界面 - 级别: " + level + ", 题目数量: " + count);
+    // 设置测验参数
+    quizView.setQuizParameters(level, count);
     primaryStage.setScene(quizView.getScene());
-    primaryStage.show(); // 添加这行
+    primaryStage.show();
   }
 
   public void showResultView(double score) {

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

@@ -58,9 +58,8 @@ public class QuestionCountView {
           return;
         }
 
-        // 设置题目数量和级别，然后开始答题
-        sceneManager.getQuizView().setQuizParameters(level, count);
-        sceneManager.showQuizView();
+        // 直接调用 showQuizView 并传递参数
+        sceneManager.showQuizView(level, count);
 
       } catch (NumberFormatException ex) {
         showError(statusLabel, "请输入有效的数字！");

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

@@ -67,19 +67,62 @@ public class QuizView {
   }
 
   public void setQuizParameters(String level, int count) {
+    System.out.println("设置测验参数 - 级别: " + level + ", 题目数量: " + count);
+
     this.currentLevel = level;
     this.questionCount = count;
     this.correctAnswers = 0;
 
     // 生成题目
     generateQuestions();
+
+    // 检查是否成功生成题目
+    if (questions == null || questions.isEmpty()) {
+      System.out.println("题目生成失败，显示空状态");
+      showEmptyState();
+      return;
+    }
+
+    System.out.println("成功生成 " + questions.size() + " 道题目，开始显示第一题");
     showQuestion(0);
   }
 
   private void generateQuestions() {
-    QuestionGenerator questionGenerator = QuestionService.createGenerator(currentLevel);
-    multipleChoiceGenerator = new MultipleChoiceGenerator(questionGenerator,currentLevel);
-    questions = multipleChoiceGenerator.generateMultipleChoiceQuestions(questionCount);
+    try {
+      System.out.println("开始生成题目，级别: " + currentLevel + ", 数量: " + questionCount);
+
+      QuestionGenerator questionGenerator = QuestionService.createGenerator(currentLevel);
+      if (questionGenerator == null) {
+        System.err.println("题目生成器创建失败，级别: " + currentLevel);
+        questions = java.util.Collections.emptyList();
+        return;
+      }
+
+      System.out.println("题目生成器创建成功: " + questionGenerator.getClass().getSimpleName());
+
+      multipleChoiceGenerator = new MultipleChoiceGenerator(questionGenerator, currentLevel);
+      questions = multipleChoiceGenerator.generateMultipleChoiceQuestions(questionCount);
+
+      System.out.println("题目生成完成，数量: " + (questions != null ? questions.size() : "null"));
+
+    } catch (Exception e) {
+      System.err.println("生成题目时出现异常: " + e.getMessage());
+      e.printStackTrace();
+      questions = java.util.Collections.emptyList();
+    }
+  }
+
+  private void showEmptyState() {
+    VBox root = (VBox) scene.getRoot();
+    root.getChildren().clear();
+
+    Label emptyLabel = new Label("无法生成题目，请返回重试");
+    emptyLabel.setFont(Font.font(16));
+
+    Button backButton = new Button("返回");
+    backButton.setOnAction(e -> sceneManager.showLevelSelectionView());
+
+    root.getChildren().addAll(emptyLabel, backButton);
   }
 
   private void showQuestion(int index) {

src/main/java/com/ybw/mathapp/Main.java

@@ -9,12 +9,13 @@ import java.util.List;
 public class Main {
   public static void main(String[] args) {
     // 生成小学选择题
+    /*
     System.out.println("--- Primary School MCQs ---");
     PrimarySchoolGenerator primaryGen = new PrimarySchoolGenerator();
     MultipleChoiceGenerator primaryMC = new MultipleChoiceGenerator(primaryGen, "小学"); // 传入级别
     List<QuestionWithOptions> primaryMCQs = primaryMC.generateMultipleChoiceQuestions(10);
     primaryMCQs.forEach(q -> System.out.println(q + "\n"));
-
+    */
     // 生成初中选择题
     System.out.println("--- Junior High MCQs ---");
     JuniorHighGenerator juniorGen = new JuniorHighGenerator();

users.txt

@@ -1 +1,2 @@
 张三,1798231811@qq.com,123456
+wsf,3310207578@qq.com,Wsf1234