"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。