.

components/utility/home-redirector.tsx

@@ -3,6 +3,7 @@
 import { useEffect } from 'react'
 import { useRouter } from 'next/navigation'
 import i18nConfig from '@/i18nConfig'
+import { useTranslation } from 'react-i18next' // 引入 useTranslation
 
 const isValidLocale = (locale: string): locale is (typeof i18nConfig.locales)[number] => {
   return (i18nConfig.locales as readonly string[]).includes(locale)
@@ -10,6 +11,7 @@ const isValidLocale = (locale: string): locale is (typeof i18nConfig.locales)[nu
 
 export default function HomeRedirector() {
   const router = useRouter()
+  const { i18n } = useTranslation() // 获取 i18n 实例
 
   useEffect(() => {
     const preferred = localStorage.getItem('preferred-language')
@@ -25,6 +27,9 @@ export default function HomeRedirector() {
   
     // ✅ 同步写入 cookie
     document.cookie = `preferred-language=${preferred}; path=/; max-age=31536000` // 1 年
+
+    // 修改 i18n 中的语言
+    i18n.changeLanguage(preferred) // 更新 i18n 的 locale
   
     const pathLocale = currentPath.split('/')[1]
     const hasLocaleInPath = isValidLocale(pathLocale)