直接新建后端把所有逻辑做完了

backend/utils.py

@@ -1,6 +1,24 @@
 from urllib.parse import urlparse, urlunparse
 from sqlalchemy import create_engine, MetaData, Table, select, update, and_
+# backend/llm_service.py
+import dashscope
+from http import HTTPStatus
+from .config import settings
 
+# 初始化 Dashscope
+dashscope.api_key = settings.DASHSCOPE_API_KEY
+
+def get_embeddings(texts: list[str]):
+    """调用通义千问 embedding 模型"""
+    resp = dashscope.TextEmbedding.call(
+        model=dashscope.TextEmbedding.Models.text_embedding_v3, # 或其他模型
+        input=texts
+    )
+    if resp.status_code == HTTPStatus.OK:
+        return [item['embedding'] for item in resp.output['embeddings']]
+    else:
+        print(f"Embedding Error: {resp}")
+        return []
 def normalize_url(url: str) -> str:
     if not url: return ""
     url = url.strip()