65 lines
2.2 KiB
TypeScript
65 lines
2.2 KiB
TypeScript
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import { NextResponse } from 'next/server';
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import type { NextRequest } from 'next/server';
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const locales = ['zh-CN', 'zh-TW', 'en'];
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const defaultLocale = 'zh-CN';
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// 获取首选语言
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function getLocale(request: NextRequest): string {
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// 1. 检查URL路径中是否已包含语言代码
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const pathname = request.nextUrl.pathname;
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const pathnameIsMissingLocale = locales.every(
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(locale) => !pathname.startsWith(`/${locale}/`) && pathname !== `/${locale}`
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);
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if (!pathnameIsMissingLocale) {
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return locales.find(locale => pathname.startsWith(`/${locale}`)) || defaultLocale;
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}
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// 2. 检查Accept-Language头
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const acceptLanguage = request.headers.get('accept-language');
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if (acceptLanguage) {
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const preferredLocale = locales.find(locale =>
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acceptLanguage.toLowerCase().includes(locale.toLowerCase())
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);
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if (preferredLocale) {
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return preferredLocale;
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}
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}
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return defaultLocale;
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}
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export function middleware(request: NextRequest) {
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const pathname = request.nextUrl.pathname;
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// 检查路径是否已经包含语言代码
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const pathnameIsMissingLocale = locales.every(
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(locale) => !pathname.startsWith(`/${locale}/`) && pathname !== `/${locale}`
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);
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// 如果路径缺少语言代码，则重定向
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if (pathnameIsMissingLocale) {
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const locale = getLocale(request);
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return NextResponse.redirect(
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new URL(`/${locale}${pathname.startsWith('/') ? '' : '/'}${pathname}`, request.url)
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);
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}
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}
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export const config = {
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// 匹配所有路径，除了api、_next/static、_next/image、favicon.ico等
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matcher: [
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/*
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* 匹配所有请求路径，除了以下开头的：
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* - api (API routes)
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* - _next/static (静态文件)
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* - _next/image (图片优化文件)
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* - favicon.ico (网站图标)
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* - locales (翻译文件)
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* - docs (文档文件)
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* - 各种静态资源文件
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*/
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'/((?!api|_next/static|_next/image|favicon.ico|locales|docs|.*\\.png$|.*\\.jpg$|.*\\.jpeg$|.*\\.gif$|.*\\.svg$|.*\\.ico$|.*\\.css$|.*\\.js$|.*\\.json$|.*\\.md$).*)',
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],
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};
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