mod_rewrite: query string gets lost on rewrite

Question

I have limited .htaccess knowledge and requires some help. I need to redirect all page request to www.newdomain.com except for www.olddomain/page.json but the query string get dropped when it redirect. how can i preserve it? thankyou very much!

Current code:

RewriteEngine on
RewriteCond %{REQUEST_URI} !^/page.json
RewriteRule (.*) http://newdomain.com/$1 [R=301,L]

Edit: Just to make it clear, i only need to stay on page.json on the old domain, lets say user request for www.olddomain.com/page1.json?session=gVgr30ExUlM i need to redirect to www.newdomain.com/page1.json?session=gVgr30ExUlM BUT when it is www.olddomain.com/page.json?=LKJHGF i need it to stay on that old domain and wont redirect is it possible?

Answer 1

使用[QSA]标志（“查询字符串追加”）

Answer 2

您需要添加[QSA]和可选的[NE]这应该给您：

RewriteRule (.*) http://newdomain.com/$1 [QSA,NE,R=301,L]