htaccess将域名a.com重定向到b.com/blog，并保留a.com地址

Question

I want redirect domain a.com to b.com/blog
but want keep a.com adress in browser bar.

I currently have

RewriteEngine On
RewriteCond %{HTTP_HOST} ^a\.com$ [NC]
RewriteRule ^(.*)$ b.com/$1 [L,R=301]

Answer 1

You can't. It would be quite a security hole for a browser to be redirected to a different domain without the address bar showing this!

You could use iFrames ... but I would first question why you want to do this at all.