How to handle redirects in Next.js

'use server'
 
import { redirect } from 'next/navigation'
import { revalidatePath } from 'next/cache'
 
export async function createPost(id: string) {
  try {
    // 调用数据库
  } catch (error) {
    // 处理错误
  }
 
  revalidatePath('/posts') // 更新缓存的帖子
  redirect(`/post/${id}`) // 导航到新帖子页面
}

'use server'
 
import { permanentRedirect } from 'next/navigation'
import { revalidateTag } from 'next/cache'
 
export async function updateUsername(username: string, formData: FormData) {
  try {
    // 调用数据库
  } catch (error) {
    // 处理错误
  }
 
  revalidateTag('username') // 更新所有对用户名的引用
  permanentRedirect(`/profile/${username}`) // 导航到新的用户资料
}

'use client'
 
import { useRouter } from 'next/navigation'
 
export default function Page() {
  const router = useRouter()
 
  return (
    <button type="button" onClick={() => router.push('/dashboard')}>
      Dashboard
    </button>
  )
}

import type { NextConfig } from 'next'
 
const nextConfig: NextConfig = {
  async redirects() {
    return [
      // 基本重定向
      {
        source: '/about',
        destination: '/',
        permanent: true,
      },
      // 通配符路径匹配
      {
        source: '/blog/:slug',
        destination: '/news/:slug',
        permanent: true,
      },
    ]
  },
}
 
export default nextConfig

import { NextResponse, NextRequest } from 'next/server'
import { authenticate } from 'auth-provider'
 
export function proxy(request: NextRequest) {
  const isAuthenticated = authenticate(request)
 
  // 如果用户已通过身份验证，正常继续
  if (isAuthenticated) {
    return NextResponse.next()
  }
 
  // 如果未通过身份验证，重定向到登录页面
  return NextResponse.redirect(new URL('/login', request.url))
}
 
export const config = {
  matcher: '/dashboard/:path*',
}

{
  "/old": {
    "destination": "/new",
    "permanent": true
  },
  "/blog/post-old": {
    "destination": "/blog/post-new",
    "permanent": true
  }
}

import { NextResponse, NextRequest } from 'next/server'
import { get } from '@vercel/edge-config'
 
type RedirectEntry = {
  destination: string
  permanent: boolean
}
 
export async function proxy(request: NextRequest) {
  const pathname = request.nextUrl.pathname
  const redirectData = await get(pathname)
 
  if (redirectData && typeof redirectData === 'string') {
    const redirectEntry: RedirectEntry = JSON.parse(redirectData)
    const statusCode = redirectEntry.permanent ? 308 : 307
    return NextResponse.redirect(redirectEntry.destination, statusCode)
  }
 
  // 未找到重定向，继续而不重定向
  return NextResponse.next()
}

import { NextResponse, NextRequest } from 'next/server'
import { ScalableBloomFilter } from 'bloom-filters'
import GeneratedBloomFilter from './redirects/bloom-filter.json'
 
type RedirectEntry = {
  destination: string
  permanent: boolean
}
 
// 从生成的 JSON 文件初始化 bloom filter
const bloomFilter = ScalableBloomFilter.fromJSON(GeneratedBloomFilter as any)
 
export async function proxy(request: NextRequest) {
  // 获取传入请求的路径
  const pathname = request.nextUrl.pathname
 
  // 检查路径是否在 bloom filter 中
  if (bloomFilter.has(pathname)) {
    // 将路径名转发到 Route Handler
    const api = new URL(
      `/api/redirects?pathname=${encodeURIComponent(request.nextUrl.pathname)}`,
      request.nextUrl.origin
    )
 
    try {
      // 从 Route Handler 获取重定向数据
      const redirectData = await fetch(api)
 
      if (redirectData.ok) {
        const redirectEntry: RedirectEntry | undefined =
          await redirectData.json()
 
        if (redirectEntry) {
          // 确定状态码
          const statusCode = redirectEntry.permanent ? 308 : 307
 
          // 重定向到目标
          return NextResponse.redirect(redirectEntry.destination, statusCode)
        }
      }
    } catch (error) {
      console.error(error)
    }
  }
 
  // 未找到重定向，继续请求而不重定向
  return NextResponse.next()
}

import { NextRequest, NextResponse } from 'next/server'
import redirects from '@/app/redirects/redirects.json'
 
type RedirectEntry = {
  destination: string
  permanent: boolean
}
 
export function GET(request: NextRequest) {
  const pathname = request.nextUrl.searchParams.get('pathname')
  if (!pathname) {
    return new Response('Bad Request', { status: 400 })
  }
 
  // 从 redirects.json 文件获取重定向条目
  const redirect = (redirects as Record<string, RedirectEntry>)[pathname]
 
  // 处理 bloom filter 误报
  if (!redirect) {
    return new Response('No redirect', { status: 400 })
  }
 
  // 返回重定向条目
  return NextResponse.json(redirect)
}