增加ragflow_controller中的流式返回聊天结果的支持

ruoyi-fastapi-backend/.gitignore

@@ -143,3 +143,10 @@ cython_debug/
 # VSCode
 .vscode/
 
+*.jpg 
+*.png
+*.jpeg
+*.gif
+*.ico
+*.svg
+

ruoyi-fastapi-backend/module_admin/controller/ragflow_controller.py

@@ -1,6 +1,6 @@
 # from datetime import datetime
 from typing import List
-from fastapi import APIRouter, Depends, Request, UploadFile, File, Form
+from fastapi import APIRouter, Depends, Request, UploadFile, File, Form, StreamingResponse
 # from pydantic_validation_decorator import ValidateFields
 # from sqlalchemy.ext.asyncio import AsyncSession
 # from config.enums import BusinessType
@@ -203,12 +203,24 @@ async def converse_with_chat_assistant(
     """
     与聊天助手进行对话
     """
-    
     result = await RAGFlowService.converse_with_chat_assistant_services(converse_params)
+    
+    # 如果是流式响应，返回 StreamingResponse, result sse格式
+    if converse_params.stream:
+        return StreamingResponse(
+            result,
+            media_type="text/event-stream",
+            headers={
+                "Cache-Control": "no-cache",
+                "Connection": "keep-alive",
+            }
+        )
+    else:
         return parse_result(result)
 
     
    
+ 
     # return parse_result(result)
     
 # 获取用户权限

ruoyi-fastapi-backend/module_admin/service/ragflow_service.py

@@ -4,8 +4,10 @@ from module_admin.entity.vo.ragflow_vo import RagflowListQueryModel, ListDocumen
     ,CreateSessionWithChatModel, ConverseWithChatAssistantModel
 from config.env import RAGFlowConfig
 from typing import List
+
 import asyncio
 import string
+import json
 import re
 
 class RAGFlowService:
@@ -180,6 +182,7 @@ class RAGFlowService:
     @classmethod
     async def converse_with_chat_assistant_services(cls, converse_params: ConverseWithChatAssistantModel):
         if converse_params.stream:
+            async def generate():
                 async with AsyncRAGFlowClient(RAGFlowConfig.RAGFLOW_BASE_URL, RAGFlowConfig.RAGFLOW_API_KEY) as client:
                     result = await client.converse_with_chat_assistant(**(converse_params.model_dump()))
                     
@@ -188,12 +191,20 @@ class RAGFlowService:
                         try:
                             answer = t["data"].get("answer", "")
                             answer = cls.clean_text(answer)
-                        print(repr(answer[i:]))
+                            # 只发送新增的内容
+                            new_content = answer[i:]
+                            if new_content:
+                                # 以 SSE 格式发送
+                                yield f"data: {json.dumps({'content': new_content}, ensure_ascii=False)}\n\n"
                                 i = len(answer)
                         except Exception as e:
-                        print(e)
-                        print(t)
+                            yield f"data: {json.dumps({'error': str(e)}, ensure_ascii=False)}\n\n"
                         await asyncio.sleep(0.2)
+                    
+                    # 发送结束标记
+                    yield "data: [DONE]\n\n"
+            
+            return generate()
         else:
             async with AsyncRAGFlowClient(RAGFlowConfig.RAGFLOW_BASE_URL, RAGFlowConfig.RAGFLOW_API_KEY) as client:
                 result = await client.converse_with_chat_assistant(**(converse_params.model_dump()))

ruoyi-fastapi-backend/requirements.txt

@@ -1,18 +1,25 @@
+aiohttp==3.12.15
 APScheduler==3.11.0
-asyncmy==0.2.10
-DateTime==5.5
-fastapi[all]==0.115.8
+compreface_sdk==0.6.0
+fastapi==0.119.0
+httpx==0.28.1
+Jinja2==3.1.6
 loguru==0.7.3
 openpyxl==3.1.5
-pandas==2.2.3
-passlib[bcrypt]==1.7.4
-Pillow==11.1.0
+pandas==2.3.3
+passlib==1.7.4
+Pillow==11.3.0
 psutil==7.0.0
-pydantic-validation-decorator==0.1.4
-PyJWT[crypto]==2.10.1
-PyMySQL==1.1.1
+pydantic==2.12.0
+pydantic_settings==2.11.0
+pydantic_validation_decorator==0.1.4
+PyJWT==2.10.1
+python-dotenv==1.1.1
+python_dateutil==2.9.0.post0
 redis==5.2.1
-requests==2.32.3
-SQLAlchemy[asyncio]==2.0.38
-sqlglot[rs]==26.6.0
-user-agents==2.2.0
+Requests==2.32.5
+SQLAlchemy==2.0.38
+sqlglot==26.6.0
+starlette==0.48.0
+user_agents==2.2.0
+uvicorn==0.37.0