增加前端分支

main.py

@@ -1,4 +1,5 @@
 from fastapi import FastAPI
+from fastapi.middleware.cors import CORSMiddleware
 from database import engine, Base
 from api.statistics_api import BasicInformationAPI
 from model import statistics_model   #不可以删
@@ -6,6 +7,13 @@ Base.metadata.create_all(engine)    #创建所有的表
 
 app = FastAPI()
 
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=["*"],
+    allow_methods=["*"],
+    allow_headers=["*"],
+)
+
 app.include_router(BasicInformationAPI)