1、编写rewrite脚本，编辑/etc/lighttpd/local.lighttpd.conf内容如下：
url.rewrite-once = (
        "^/forum/archiver/((fid|tid)-[\w\-]+\.html)$" => "forum/archiver/index.php?$1",
        "^/forum/forum-([0-9]+)-([0-9]+)\.html$" => "forum/forumdisplay.php?fid=$1&page=$2",
        "^/forum/thread-([0-9]+)-([0-9]+)-([0-9]+)\.html$" => "forum/viewthread.php?tid=$1&extra=page%%53D$3&page=$2",
        "^/forum/space-(username|uid)-(.+)\.html$" => "forum/space.php?$1=$2",
        "^/forum/tag-(.+)\.html$" => "forum/tag.php?name=$1"
)
这里假设论坛装在forum目录下，如果是装在根目录下则是：
url.rewrite-once = (
        "^/archiver/((fid|tid)-[\w\-]+\.html)$" => "archiver/index.php?$1",
        "^/forum-([0-9]+)-([0-9]+)\.html$" => "forumdisplay.php?fid=$1&page=$2",
        "^/thread-([0-9]+)-([0-9]+)-([0-9]+)\.html$" => "viewthread.php?tid=$1&extra=page%%53D$3&page=$2",
        "^/space-(username|uid)-(.+)\.html$" => "space.php?$1=$2",
        "^/tag-(.+)\.html$" => "tag.php?name=$1"
)
2、重启lighttpd，重启方法：/etc/init.d/lighttpd restart