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FastAPI 跨域问题

FastAPI 跨域问题

使用FastAPI开发接口时,跨域调用报错如下:

Access to XMLHttpRequest at 'http://127.0.0.1:8000/API/ADMIN/ADDUSER' from origin 'null' has been blocked by CORS policy: Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource.

解决办法:

from fastapi import FastAPI
from fastapi.middleware.cors import CORSMiddleware


app = FastAPI()

app.add_middleware(
    CORSMiddleware,
    allow_origins=["*"],#允许进行跨域请求的来源列表,*作为通配符
    allow_credentials=True,#跨域请求支持cookie,默认为否
    allow_methods=["*"],#允许跨域请求的HTTP方法
    allow_headers=["*"],#允许跨域请求的HTTP头列表
)

FastAPI原文介绍:https://fastapi.tiangolo.com/tutorial/cors/

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