dedecms搜索页面不能使用arclist等标签的解决方法

require_once(DEDEINC."/taglib/hotwords.lib.php");
require_once(DEDEINC."/taglib/channel.lib.php");

require_once(DEDEINC."/taglib/arclist.lib.php");
require_once(DEDEINC."/taglib/channelartlist.lib.php");

else if($tagname=="hotwords")
{
$this->dtp->Assign($tagid,lib_hotwords($ctag,$this));
}

else if($tagname=="arclist")
{
$this->dtp->Assign($tagid,lib_arclist($ctag,$this));
}
else if($tagname=="channelartlist")
{
$this->dtp->Assign($tagid,lib_channelartlist($ctag,$this));
}