apt-get install lighttpd lighttpd-mod-webdav apache2-utils
#install lighttpd and additional module lighttpd-mod-webdav
#apache2-utils:htpasswd to generate webdav password file, lighttpd also reuse it

chown www-data:www-data /var/run/lighttpd/
#access to www-data user and group

lighty-enable-mod auth
lighty-enable-mod webdav
#enable authorization

htpasswd -c /var/www/passwd.dav testuser
#prompt to input password
chown root:www-data /var/www/passwd.dav
chmod 640 /var/www/passwd.dav
#create users

mkdir -p /var/www/dav
chown www-data:www-data /var/www/dav
#create directory to be shared by webdav

vi /etc/lighttpd/lighttpd.conf
#reroute webdav
#server.modules              = (
#	"mod_access",
#	"mod_webdav",#+
#	#...
#	$HTTP["host"] == "www.example.com" {
#	  server.document-root = "/var/www/web"
#	  alias.url = ( "/webdav" => "/var/www/dav" )
#	  $HTTP["url"] =~ "^/webdav($|/)" {
#	    webdav.activate = "enable"
#	    webdav.is-readonly = "disable"
#	    webdav.sqlite-db-name = "/var/run/lighttpd/lighttpd.webdav_lock.db"
#	    auth.backend = "htpasswd"
#	    auth.backend.htpasswd.userfile = "/var/www/passwd.dav"
#	    auth.require = ( "" => ( "method" => "basic",
#	                             "realm" => "webdav",
#	                             "require" => "valid-user" ) )
#	  }
#	}


/etc/init.d/lighttpd restart
#take effect

转自：https://gist.github.com/huazhihao/3753705