HTAccess重写需求：语言路径触发跨域名跳转（子目录失效问题）

Hey there! The issue with your current rule is that it only matches the exact path ^en$ — meaning it only works for the root /en page, not any subdirectories like /en/page1. Let's tweak the rule to catch all paths starting with en, no matter what comes after.

Here's the corrected Apache mod_rewrite rule:

RewriteCond %{HTTP_HOST} ^www\.mywebsite\.de$
RewriteRule ^en(.*)$ https://www.mywebsite.com/en$1?%{QUERY_STRING} [R=301,L]

Let me break down what each part does:

• ^en(.*)$: This regex matches any URL path that starts with en. The (.*) captures everything after en (whether it's a subdirectory, filename, or even nothing) and stores it in the $1 variable.
• https://www.mywebsite.com/en$1: We append the captured $1 to the target domain's /en path, so /en/page1 becomes /en/page1 on the new domain — preserving your full URL structure perfectly.
• ?%{QUERY_STRING}: This ensures any query parameters from the original URL (like ?utm_source=foo) get carried over to the redirected URL, so you don't lose any tracking or dynamic data.
• [R=301,L]: R=301 sets a permanent redirect (great for SEO, as it tells search engines the page has moved permanently), and L tells mod_rewrite this is the last rule to process once matched.

Quick tip: If you're testing this out, you can use R=302 instead of 301 first — that's a temporary redirect, so you don't accidentally cache a wrong rule in browsers or search engines. Once you confirm everything works, switch back to 301.

内容的提问来源于stack exchange，提问作者onclesam