什么是重定向的index.php，index.html，然后非www变种到www根目录的.htaccess最简单的方法是什么？例如重定向

  http://example.com/index.php
http://www.example.com/index.html
http://example.com
 

要 http://www.example.com ？

 的RewriteCond％{HTTP_HOST} ^例如 .COM [NC]
重写规则^（。*）$ http://www.example.com/$1 [L，R = 301]
 

What is the simplest way to redirect index.php, index.html and non-www variants to the www root with .htaccess? For example redirecting

http://example.com/index.php
http://www.example.com/index.html
http://example.com

to http://www.example.com?

RewriteCond %{HTTP_HOST} ^example.com [NC]
RewriteRule ^(.*)$ http://www.example.com/$1 [L,R=301]