修复jmidjourney流式数据没有实时推送的问题

apps/jmidjourney/api.py

@@ -40,7 +40,11 @@ async def ve_generate_image(data: dict, request: Request):
             yield json.dumps(result, ensure_ascii=False) + "\n"
     
     return StreamingResponse(
-        generate(), 
+        generate(),
         media_type="application/x-ndjson",
-        headers={"X-Content-Type-Options": "nosniff"}
+        headers={
+            "Cache-Control": "no-cache",
+            "X-Accel-Buffering": "no",
+            "X-Content-Type-Options": "nosniff"
+        }
     )

apps/jmidjourney/service.py

@@ -447,4 +447,4 @@ class MidjourneyService:
             "status": "error",
             "message": f"任务超时，已轮询 {settings.vectorengine_max_polling_attempts} 次",
             "task_id": task_id
-        }
+        }