add JavaFX demo application

- Add FxMain as JavaFX application entry with IOC integration
- Add FxConfig with @Bean factory methods for DateTimeFormatter
- Add MainController with constructor injection
- Add UserService and MessageService layers
- Add main.fxml view with user management UI
- Add javafx-fxml dependency and javafx-maven-plugin
- Add demo documentation and run script
- Demonstrate @Controller, @Service, @Qualifier, @PostConstruct in JavaFX context

Run with: mvn javafx:run or run-javafx-demo.bat

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

src/test/java/com/imyeyu/inject/javafxdemo/FxConfig.java

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+package com.imyeyu.inject.javafxdemo;
+
+import com.imyeyu.inject.annotation.Bean;
+import com.imyeyu.inject.annotation.Configuration;
+
+import java.time.format.DateTimeFormatter;
+
+/**
+ * JavaFX 应用配置
+ *
+ * @author 夜雨
+ */
+@Configuration
+public class FxConfig {
+
+    @Bean
+    public DateTimeFormatter dateTimeFormatter() {
+        return DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
+    }
+
+    @Bean("appTitle")
+    public String appTitle() {
+        return "Timi-Inject JavaFX Demo";
+    }
+
+    @Bean("version")
+    public String version() {
+        return "0.0.2";
+    }
+}

src/test/java/com/imyeyu/inject/javafxdemo/FxMain.java

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+package com.imyeyu.inject.javafxdemo;
+
+import com.imyeyu.inject.TimiInject;
+import com.imyeyu.inject.annotation.Import;
+import com.imyeyu.inject.annotation.TimiInjectApplication;
+import javafx.application.Application;
+import javafx.fxml.FXMLLoader;
+import javafx.scene.Parent;
+import javafx.scene.Scene;
+import javafx.stage.Stage;
+
+/**
+ * JavaFX 应用入口
+ *
+ * @author 夜雨
+ */
+@TimiInjectApplication("com.imyeyu.inject.javafxdemo")
+@Import(FxConfig.class)
+public class FxMain extends Application {
+
+    private static TimiInject inject;
+
+    public static void main(String[] args) {
+        // 启动 IOC 容器
+        inject = TimiInject.run(FxMain.class);
+
+        // 启动 JavaFX 应用
+        launch(args);
+    }
+
+    @Override
+    public void start(Stage primaryStage) throws Exception {
+        // 创建 FXMLLoader 并设置控制器工厂
+        FXMLLoader loader = new FXMLLoader(getClass().getResource("/javafxdemo/main.fxml"));
+        loader.setControllerFactory(type -> inject.di(type));
+
+        Parent root = loader.load();
+
+        Scene scene = new Scene(root, 600, 400);
+        primaryStage.setTitle("Timi-Inject JavaFX Demo");
+        primaryStage.setScene(scene);
+        primaryStage.show();
+    }
+
+    /**
+     * 获取 IOC 容器实例
+     */
+    public static TimiInject getInject() {
+        return inject;
+    }
+}

src/test/java/com/imyeyu/inject/javafxdemo/MainController.java

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+package com.imyeyu.inject.javafxdemo;
+
+import com.imyeyu.inject.annotation.Controller;
+import com.imyeyu.inject.annotation.PostConstruct;
+import javafx.collections.FXCollections;
+import javafx.collections.ObservableList;
+import javafx.fxml.FXML;
+import javafx.scene.control.*;
+
+/**
+ * 主界面控制器
+ *
+ * @author 夜雨
+ */
+@Controller
+public class MainController {
+
+    @FXML
+    private Label welcomeLabel;
+
+    @FXML
+    private Label timeLabel;
+
+    @FXML
+    private Label countLabel;
+
+    @FXML
+    private TextField usernameField;
+
+    @FXML
+    private ListView<String> userListView;
+
+    @FXML
+    private TextArea logArea;
+
+    private final UserService userService;
+    private final MessageService messageService;
+    private final ObservableList<String> userList = FXCollections.observableArrayList();
+
+    public MainController(UserService userService, MessageService messageService) {
+        this.userService = userService;
+        this.messageService = messageService;
+    }
+
+    @PostConstruct
+    public void init() {
+        log("MainController initialized");
+    }
+
+    @FXML
+    public void initialize() {
+        // 设置欢迎消息
+        welcomeLabel.setText(messageService.getWelcomeMessage());
+
+        // 加载用户列表
+        refreshUserList();
+
+        // 更新时间
+        updateTime();
+
+        log("UI initialized");
+    }
+
+    @FXML
+    private void handleAddUser() {
+        String username = usernameField.getText().trim();
+        if (username.isEmpty()) {
+            showError("Please enter a username");
+            return;
+        }
+
+        try {
+            userService.addUser(username);
+            refreshUserList();
+            usernameField.clear();
+            log(messageService.getSuccessMessage("User added"));
+        } catch (Exception e) {
+            showError(e.getMessage());
+        }
+    }
+
+    @FXML
+    private void handleRemoveUser() {
+        String selectedUser = userListView.getSelectionModel().getSelectedItem();
+        if (selectedUser == null) {
+            showError("Please select a user to remove");
+            return;
+        }
+
+        userService.removeUser(selectedUser);
+        refreshUserList();
+        log(messageService.getSuccessMessage("User removed"));
+    }
+
+    @FXML
+    private void handleRefresh() {
+        refreshUserList();
+        updateTime();
+        log("Refreshed");
+    }
+
+    @FXML
+    private void handleClearLog() {
+        logArea.clear();
+        log("Log cleared");
+    }
+
+    private void refreshUserList() {
+        userList.clear();
+        userList.addAll(userService.getAllUsers());
+        userListView.setItems(userList);
+        countLabel.setText("Total Users: " + userService.getUserCount());
+    }
+
+    private void updateTime() {
+        timeLabel.setText("Current Time: " + userService.getCurrentTime());
+    }
+
+    private void showError(String message) {
+        log(messageService.getErrorMessage(message));
+        Alert alert = new Alert(Alert.AlertType.ERROR);
+        alert.setTitle("Error");
+        alert.setHeaderText(null);
+        alert.setContentText(message);
+        alert.showAndWait();
+    }
+
+    private void log(String message) {
+        String timestamp = userService.getCurrentTime();
+        logArea.appendText(String.format("[%s] %s%n", timestamp, message));
+    }
+}

src/test/java/com/imyeyu/inject/javafxdemo/MessageService.java

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+package com.imyeyu.inject.javafxdemo;
+
+import com.imyeyu.inject.annotation.Qualifier;
+import com.imyeyu.inject.annotation.Service;
+
+/**
+ * 消息服务
+ *
+ * @author 夜雨
+ */
+@Service
+public class MessageService {
+
+    private final String appTitle;
+    private final String version;
+
+    public MessageService(@Qualifier("appTitle") String appTitle,
+                         @Qualifier("version") String version) {
+        this.appTitle = appTitle;
+        this.version = version;
+    }
+
+    public String getWelcomeMessage() {
+        return String.format("Welcome to %s v%s!", appTitle, version);
+    }
+
+    public String getSuccessMessage(String action) {
+        return action + " successfully!";
+    }
+
+    public String getErrorMessage(String error) {
+        return "Error: " + error;
+    }
+}

src/test/java/com/imyeyu/inject/javafxdemo/UserService.java

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+package com.imyeyu.inject.javafxdemo;
+
+import com.imyeyu.inject.annotation.PostConstruct;
+import com.imyeyu.inject.annotation.Service;
+
+import java.time.LocalDateTime;
+import java.time.format.DateTimeFormatter;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * 用户服务
+ *
+ * @author 夜雨
+ */
+@Service
+public class UserService {
+
+    private final DateTimeFormatter dateTimeFormatter;
+    private final List<String> users = new ArrayList<>();
+
+    public UserService(DateTimeFormatter dateTimeFormatter) {
+        this.dateTimeFormatter = dateTimeFormatter;
+    }
+
+    @PostConstruct
+    public void init() {
+        users.add("Admin");
+        users.add("User1");
+        users.add("User2");
+        System.out.println("UserService initialized with " + users.size() + " users");
+    }
+
+    public List<String> getAllUsers() {
+        return new ArrayList<>(users);
+    }
+
+    public void addUser(String username) {
+        if (username == null || username.isBlank()) {
+            throw new IllegalArgumentException("Username cannot be empty");
+        }
+        if (users.contains(username)) {
+            throw new IllegalArgumentException("User already exists");
+        }
+        users.add(username);
+    }
+
+    public void removeUser(String username) {
+        users.remove(username);
+    }
+
+    public String getCurrentTime() {
+        return LocalDateTime.now().format(dateTimeFormatter);
+    }
+
+    public int getUserCount() {
+        return users.size();
+    }
+}