feat: 完善后端架构和service层实现

- 创建完整的entity实体类体系，包括所有业务实体
- 实现BaseEntity基类，统一管理公共字段
- 创建雪花算法ID生成器和自动填充处理器
- 简化所有mapper接口，只继承BaseMapper
- 重构service层，使用LambdaQueryWrapper进行数据库操作
- 创建BasePageRequest分页查询基类
- 完善用户上下文管理和JWT认证
- 新增WebSocket聊天功能和相关控制器
- 更新前端配置和组件，完善用户认证流程
- 同步数据库建表脚本

backend-single/src/main/java/com/emotion/controller/WebSocketController.java

@@ -10,6 +10,8 @@ import org.springframework.messaging.handler.annotation.SendTo;
 import org.springframework.messaging.simp.SimpMessageHeaderAccessor;
 import org.springframework.messaging.simp.SimpMessagingTemplate;
 import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.ResponseBody;
 
 import java.util.HashMap;
 import java.util.Map;
@@ -31,59 +33,9 @@ public class WebSocketController {
     @Autowired
     private AiService aiService;
 
-    /**
-     * 处理聊天消息
-     */
-    @MessageMapping("/chat.send")
-    @SendTo("/topic/public")
-    public Map<String, Object> sendMessage(@Payload Map<String, Object> chatMessage) {
-        log.info("收到WebSocket消息: {}", chatMessage);
-        
-        try {
-            String content = (String) chatMessage.get("content");
-            String sender = (String) chatMessage.get("sender");
-            String type = (String) chatMessage.get("type");
-            
-            // 构建响应消息
-            Map<String, Object> response = new HashMap<>();
-            response.put("content", content);
-            response.put("sender", sender);
-            response.put("type", type);
-            response.put("timestamp", System.currentTimeMillis());
-            
-            return response;
-        } catch (Exception e) {
-            log.error("处理WebSocket消息失败", e);
-            Map<String, Object> errorResponse = new HashMap<>();
-            errorResponse.put("content", "消息处理失败");
-            errorResponse.put("type", "ERROR");
-            errorResponse.put("timestamp", System.currentTimeMillis());
-            return errorResponse;
-        }
-    }
+    // 已移除旧的WebSocket消息处理方法，使用新的ChatWebSocketController
 
-    /**
-     * 处理用户连接
-     */
-    @MessageMapping("/chat.connect")
-    @SendTo("/topic/public")
-    public Map<String, Object> connectUser(@Payload Map<String, Object> chatMessage,
-                                          SimpMessageHeaderAccessor headerAccessor) {
-        String username = (String) chatMessage.get("sender");
-        
-        // 在WebSocket会话中添加用户名
-        headerAccessor.getSessionAttributes().put("username", username);
-        
-        log.info("用户连接: {}", username);
-        
-        Map<String, Object> response = new HashMap<>();
-        response.put("content", username + " 加入了聊天");
-        response.put("type", "JOIN");
-        response.put("sender", "System");
-        response.put("timestamp", System.currentTimeMillis());
-        
-        return response;
-    }
+    // 已移除旧的用户连接处理方法，使用新的ChatWebSocketController
 
     /**
      * 处理AI聊天消息
@@ -142,7 +94,22 @@ public class WebSocketController {
         systemMessage.put("sender", "System");
         systemMessage.put("type", "SYSTEM");
         systemMessage.put("timestamp", System.currentTimeMillis());
-        
+
         messagingTemplate.convertAndSend(destination, systemMessage);
     }
+
+    /**
+     * WebSocket状态监控接口
+     */
+    @GetMapping("/api/ws/status")
+    @ResponseBody
+    public Map<String, Object> getWebSocketStatus() {
+        Map<String, Object> status = new HashMap<>();
+        status.put("status", "active");
+        status.put("timestamp", System.currentTimeMillis());
+        status.put("endpoint", "/ws/chat");
+        status.put("protocols", new String[]{"websocket", "sockjs"});
+        status.put("message", "WebSocket服务正常运行");
+        return status;
+    }
 }