feat: add guided learning cockpit

src/main/java/com/example/demo/event/UserEventPublisher.java

@@ -1,55 +1,30 @@
 package com.example.demo.event;
 
 import com.example.demo.model.UserEvent;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.context.ApplicationEventPublisher;
 import org.springframework.stereotype.Component;
-import org.springframework.beans.factory.annotation.Autowired;
 
-/**
- * 事件发布器 - 演示如何发布事件
- * 
- * 学习点：
- * - ApplicationEventPublisher 接口
- * - 依赖注入发布器
- * - 解耦：发布者不需要知道监听者
- */
 @Component
 public class UserEventPublisher {
-    
+
     @Autowired
     private ApplicationEventPublisher eventPublisher;
-    
-    /**
-     * 发布用户事件
-     */
+
     public void publishEvent(UserEvent event) {
-        System.out.println("[EventPublisher] 发布事件: " + event.getType() + " - " + event.getUserName());
+        System.out.println("[EventPublisher] Publish event " + event.getType() + " for " + event.getUserName());
         eventPublisher.publishEvent(event);
     }
-    
-    /**
-     * 便捷方法：发布用户创建事件
-     */
+
+    public void publishUserEvent(Long userId, String userName, UserEvent.Type type, String detail) {
+        publishEvent(new UserEvent(type, userId, userName, detail));
+    }
+
     public void publishUserCreated(Long userId, String userName) {
-        UserEvent event = new UserEvent(
-            UserEvent.Type.CREATED,
-            userId,
-            userName,
-            "新用户注册成功"
-        );
-        publishEvent(event);
+        publishUserEvent(userId, userName, UserEvent.Type.CREATED, "User created successfully");
     }
-    
-    /**
-     * 便捷方法：发布用户登录事件
-     */
+
     public void publishUserLogin(Long userId, String userName) {
-        UserEvent event = new UserEvent(
-            UserEvent.Type.LOGIN,
-            userId,
-            userName,
-            "用户登录成功"
-        );
-        publishEvent(event);
+        publishUserEvent(userId, userName, UserEvent.Type.LOGIN, "User login succeeded");
     }
-}
+}