301 redirect after url rewrite

I did some htaccess URL rewrite. To keep my go开发者_如何转开发ogle ranking I must redirect the old URL to the new one; the problem is the old URL still 'exist' and I'm not sure how to do the redirect. This is an example:

old url: mypage.php?id=myId which now is rewritten as: mypage-myId.html

this is the htaccess directive

RewriteRule ^mypage-([A-Za-z0-9_-]+).html$ mypage.php?id=$1 [L]

now I want to 301 redirect all the old url (mypage.php?id=myIds) to the new url (mypage-myIds.html). I tried this at the top of my htaccess file: redirect 301 mypage.php?id=1 to mypage-1.html but nothing happens, the page stays on mypage.php?id=1.

What's wrong with this? I found another post about this problem url rewrite & redirect question but the solution wasn't that clear to me.

Thanks in advance Vittorio

You could try this:

RewriteEngine On

RewriteCond %{QUERY_STRING} ^id=([A-Za-z0-9_-]+)$  # fetch ID
RewriteRule ^mypage\.php$ http://domain.com/mypage-%1.html [R=301,L]  # redirect old URL to new

RewriteRule ^mypage-([A-Za-z0-9_-]+)\.html$ mypage.php?id=$1 [L]  # rewrite