Wordpress Permalink Problem 404

Question

My website old permalink http://example.com/postid.html . Now I changed my permalink structure to http://example.com/postname .

My old link which is now 404.

I tried using Yoast Generator and redirect plugin for .htaccess code for 301 redirect and updated my .htaccess but the problem not solved yet.

May I know how can I 301 redirect all my Old post postid.html to new post postname?

Thanks in advance.

Answer 1

After a bit of googling, I myself sorted out.

Just add the following line in your .htacess

RedirectMatch 301 ^/(\d+).html$ http://sitename.com/?p=$1