fix rag

api/products/rag_service.py

@@ -1,13 +1,13 @@
 #!/usr/bin/env python3
 """
-RAG Service Module for 徵象防伪验证平台
+RAG Service Module for Themblem
 基于 LangChain 的实时知识库检索服务，支持缓存优化
 """
 
-from langchain.text_splitter import RecursiveCharacterTextSplitter
-from langchain.embeddings import HuggingFaceEmbeddings
-from langchain.vectorstores import FAISS
-from langchain.schema import Document
+from langchain_text_splitters import RecursiveCharacterTextSplitter
+from langchain_community.embeddings import HuggingFaceEmbeddings
+from langchain_community.vectorstores import FAISS
+from langchain_core.documents import Document
 from .models import Article
 from django.core.cache import cache
 from typing import List, Dict, Any

requirements.txt

@@ -12,7 +12,12 @@ requests
 # RAG dependencies
 langchain>=0.1.0
 langchain-community>=0.1.0
+langchain-core>=0.1.0
+langchain-text-splitters>=0.1.0
 sentence-transformers>=2.2.0
 faiss-cpu>=1.7.4
 beautifulsoup4>=4.12.0
 openai>=1.0.0
+
+# Protobuf version constraint (compatibility with transformers/tensorflow)
+protobuf>=3.19.0,<3.21.0