以下为HDHOO使用的htaccess，我已经加了标注·
# RewriteEngine模式开启
RewriteEngine on
# 定义默认首页
DirectoryIndex index.php default.php index.htm index.html default.htm default.html index.shtml default.shtml
# 修改程序上传文件大小限制
Options All -Indexes
php_value upload_max_filesize 50M
# 域名重定向
# news
RewriteCond %{HTTP_HOST} ^(news.)?hdhoo.com$
RewriteCond %{REQUEST_URI} !^/news/
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ /news/$1
RewriteCond %{HTTP_HOST} ^(news.)?hdhoo.com$
RewriteRule ^(/)?$ /news/index.html [L]
# 自定义错误页面
ErrorDocument 401 /404.html
ErrorDocument 403 /404.html
ErrorDocument 404 /404.html
ErrorDocument 500 /404.html