对话逻辑修复

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

@@ -3,7 +3,6 @@ package com.emotion.controller;
 import com.emotion.common.Result;
 import com.emotion.dto.request.AiChatRequest;
 import com.emotion.dto.request.AiSummaryRequest;
-import com.emotion.dto.request.ChatStatsRequest;
 import com.emotion.dto.request.GuestChatRequest;
 import com.emotion.dto.request.ConversationCreateRequest;
 import com.emotion.dto.response.AiChatResponse;
@@ -14,7 +13,7 @@ import com.emotion.dto.response.GuestChatResponse;
 import com.emotion.dto.response.GuestUserInfoResponse;
 import com.emotion.dto.response.ConversationResponse;
 import com.emotion.entity.Conversation;
-import com.emotion.service.AIChatService;
+import com.emotion.service.AiChatService;
 import com.emotion.service.MessageService;
 import com.emotion.service.ConversationService;
 import lombok.extern.slf4j.Slf4j;
@@ -25,7 +24,6 @@ import org.springframework.web.bind.annotation.*;
 import javax.servlet.http.HttpServletRequest;
 import javax.validation.Valid;
 import java.time.format.DateTimeFormatter;
-import java.util.HashMap;
 import java.util.Map;
 
 /**
@@ -40,7 +38,7 @@ import java.util.Map;
 public class AiChatController {
     
     @Autowired
-    private AIChatService aiChatService;
+    private AiChatService aiChatService;
 
     @Autowired
     private MessageService messageService;