Next.js 中间件与 Edge Runtime 实战

Next.js 中间件与 Edge Runtime 实战// middleware.ts

import { NextResponse } from 'next/server'

import type { NextRequest } from 'next/server'

export function middleware(req: NextRequest) {

const url = req.nextUrl

if (url.pathname.startsWith('/private') && !req.headers.get('x-auth')) {

url.pathname = '/login'

return NextResponse.redirect(url)

}

const res = NextResponse.next()

res.headers.set('x-powered-by', 'edge')

return res

}

export const config = {

matcher: ['/((?!_next/static|_next/image|favicon.ico).*)']

}

总结中间件在边缘执行，适合轻量鉴权与路由控制，降低后端压力并提升体验。