它通过 call_next(request) 调用下一个中间件或路由处理器，并可以修改请求或响应。1.2 创建自定义中间件以下是一个简单的中间件示例，用于记录请求的处理时间。from fastapi import FastAPI, Requestimport timeapp = FastAPI()# 自定义中间件@app.middleware("http")asyncdef
在FastAPI(以及其底层的 Starlette 框架)中,'http' 是目前唯一支持的中间件类型,它用于处理 HTTP 层面的请求和响应 """@app.middleware('http')asyncdefadd_process_time_header(request:Request,call_next):""" 中间件 """print('add_process_time_header middleware begin')response:Response=awaitcall_next(r...
1.必须使用装饰器@app.middleware("http"),且middleware_type必须为http 2.中间件参数:request, call_next,且call_next 它将接收 request 作为参数 @app.middleware("http") async def custom_middleware(request: Request, call_next): logger.info("Before request") response = await call_next(request) # ...
importuvicornfromfastapiimportFastAPI, Request, Query, Body, statusfromfastapi.encodersimportjsonable_encoderfrompydanticimportBaseModelapp = FastAPI()@app.middleware("http")# 必须用 asyncasyncdefadd_process_time_header(request: Request, call_next):# 1、可针对 Request 或其他功能,自定义代码块print("...
app=FastAPI()@app.middleware("http")# 必须用asyncasyncdefadd_process_time_header(request:Request,call_next):#1、可针对 Request 或其他功能,自定义代码块print("=== 针对 request 或其他功能执行自定义逻辑代码块 ===")print(request.query_params)print(request.method)#2、将 Request 传回给对应的路径...
自定义中间件BaseHTTPMiddleware BaseHTTPMiddleware是一个抽象类,允许您针对请求/响应接口编写ASGI中间件 要使用 实现中间件类BaseHTTPMiddleware,您必须重写该async def dispatch(request, call_next)方法, 如果您想为中间件类提供配置选项,您应该重写该__init__方法,确保第一个参数是app,并且任何剩余参数都是可选关...
call_这名称是可自定义的,但是最好就按这个默认写法call_next。 call_底层实际调用的是BaseHTTPMiddleware类: <coroutine object BaseHTTPMiddleware.__call__.<locals>.call_next at 0x0000015ADA9219A0> BaseHTTPMiddleware类的部分源码: class BaseHTTPMiddleware: def __init__(self, app: ASGIApp, dispatch...
import timefrom fastapi import FastAPI, Request@app.middleware("http")# 必须用 asyncasync def add_process_time_header(request: Request, call_next):start_time = time.time()# 必须用 awaitresponse = await call_next(request)process_time = time.time() - start_time# 自定义请求头response.headers...
middleware("http") async def add_process_time_header(request: Request, call_next): start_time = time.time() response = await call_next(request) process_time = time.time() - start_time response.headers["X-Process-Time"] = str(process_time) return response if __name__ == '__main_...
__init__(app) async def dispatch(self, request: Request, call_next) -> Response: print("调用-中间件-TestMiddleware---before") # 调用下一个中间件或路由处理函数 result = await call_next(request) print("调用-中间件-TestMiddleware---after") return result # --- 另外一个中间件 --- # ...