from fastapi import FastAPI from fastapi.middleware.cors import CORSMiddleware from api.modbus_api import modbus app = FastAPI() ''' 添加CORS中间件,允许跨域请求 ''' app.add_middleware( CORSMiddleware, allow_origins=["*"], allow_credentials=True, allow_methods=["*"], allow_headers=["*"], ) app.include_router(modbus, prefix="/modbus", tags=["modbus的api"])