Question

此时我在我的网站上使用投票系统这段代码（在PHP文件中，但我整合为JavaScript，希望抓取工具看不到）：

$rater.= '<script data-cfasync="true" type="text/javascript">';
for ($ncount = 1; $ncount <= $units; $ncount++) {
    if(!$voted) {
         $rater.='document.write("<p onClick=\"parent.location=\'\/db.php?j='.$ncount.'&q='.$id.'&t='.$ip.'&c='.$units.'\'\" style=\"cursor:pointer\" class=\"r'.$ncount.'-unit rater\"></p>");';
    }
}
$rater.='</script>';

它功能完善，但我必须才能从链接中取出db.php，因为谷歌会看到此文件并且在此文件中是302重定向。

但我发现a site正在使用相同的评级系统，但找到一种方法使评级系统能够通过“rel”属性工作。

有人知道他们是怎么做到的吗？

这是包含所有php内容的原始文件：

<?php
/*
Page:           _drawrating.php
Created:        Aug 2006
Last Mod:       Mar 18 2007
The function that draws the rating bar.
--------------------------------------------------------- 
ryan masuga, masugadesign.com
ryan@masugadesign.com 
Licensed under a Creative Commons Attribution 3.0 License.
http://creativecommons.org/licenses/by/3.0/
See readme.txt for full credit details.
--------------------------------------------------------- */
function rating_bar($id,$units='',$static='') { 
global $LANG;
require('_config-rating.php'); // get the db connection info

//set some variables
$ip = $_SERVER['REMOTE_ADDR'];
if (!$units) {$units = 10;}
if (!$static) {$static = FALSE;}

// get votes, values, ips for the current rating bar
$query=mysql_query("SELECT total_votes, total_value, used_ips FROM `$rating_dbname`.$rating_tableName WHERE id='$id' ")or die(" Error: ".mysql_error());


// insert the id in the DB if it doesn't exist already
// see: http://www.masugadesign.com/the-lab/scripts/unobtrusive-ajax-star-rating-bar/#comment-121
if (mysql_num_rows($query) == 0) {
$sql = "INSERT INTO `$rating_dbname`.$rating_tableName (`id`,`total_votes`, `total_value`, `used_ips`) VALUES ('$id', '0', '0', '')";
$result = mysql_query($sql);
}

$numbers=mysql_fetch_assoc($query);


if ($numbers['total_votes'] < 1) {
    $count = 0;
} else {
    $count=$numbers['total_votes']; //how many votes total
}
$current_rating=$numbers['total_value']; //total number of rating added together and stored
$tense=($count==1) ? $LANG->l('vote') : $LANG->l('votes'); //plural form votes/vote

// determine whether the user has voted, so we know how to draw the ul/li
$voted=mysql_num_rows(mysql_query("SELECT used_ips FROM `$rating_dbname`.$rating_tableName WHERE used_ips LIKE '%".$ip."%' AND id='".$id."' ")); 

// now draw the rating bar
$rating_width = @number_format($current_rating/$count,2)*$rating_unitwidth;
$rating1 = @number_format($current_rating/$count,1);
$rating2 = @number_format($current_rating/$count,2);


if ($static == 'static') {

        $static_rater = array();
        $static_rater[] .= "\n".'<div class="ratingblock static">';
        $static_rater[] .= '<div id="unit_long'.$id.'">';
        $static_rater[] .= '<ul id="unit_ul'.$id.'" class="unit-rating" style="width:'.$rating_unitwidth*$units.'px;">';
        $static_rater[] .= '<li class="current-rating" style="width:'.$rating_width.'px;">'.$rating2.'/'.$units.'</li>';
        $static_rater[] .= '</ul>';
//      $static_rater[] .= '<p class="static">('.$count.' '.$tense.') <em>This is \'static\'.</em></p>';
        $static_rater[] .= '</div>';
        $static_rater[] .= '</div>'."\n\n";

        return join("\n", $static_rater);


} else {

      $rater ='';
      $rater.='<div class="rating-text">'.$LANG->l('Rate this wallpaper:').' </div><div class="ratingblock nonstatic">';

      $rater.='<div id="unit_long'.$id.'">';
      $rater.='<ul id="unit_ul'.$id.'" class="unit-rating" style="width:'.$rating_unitwidth*$units.'px;">';
      $rater.='<li class="current-rating" style="width:'.$rating_width.'px;">'.$rating2.'/'.$units.'</li>';

      for ($ncount = 1; $ncount <= $units; $ncount++) { // loop from 1 to the number of units
           if(!$voted) { // if the user hasn't yet voted, draw the voting stars
              $rater.='<li><a href="'.WEB_PATH.'db.php?j='.$ncount.'&amp;q='.$id.'&amp;t='.$ip.'&amp;c='.$units.'" title="'.$ncount.' out of '.$units.'" class="r'.$ncount.'-unit rater" rel="nofollow">'.$ncount.'</a></li>';
           }
      }
      $ncount=0; // resets the count

      $rater.='</ul>';
      $rater.='<p';
      if($voted){ $rater.=' class="voted"'; }
      $rater.='>('.$count.' '.$tense.')';
      $rater.='</p>';
      $rater.='</div>';
      $rater.='</div>';
      return $rater;
 }
}
?>

Answer 1

如果您将属性rel="nofollow"添加到链接，则告知Google（和其他抓取工具）不要关注此链接。他们无法保证会遵守这一规定，但大多数人都会这样做。

另一种方法是使用robots.txt（或者您可以同时使用），它们可以包含不应编入索引的网址或网址掩码列表。

您还可以尝试识别脚本中的抓取工具，但这意味着您必须创建一个与数据保持一致的列表，并对每个请求进行大量检查。不是最好的选择。

无论如何，如果没有登录用户，我会通过使db.php不做任何特殊操作来解决这个问题。每次违规爬虫都会丢失时，您不希望保存一堆投票，因为每个链接都是匿名保存的。这样的投票系统可能很容易被搞乱，因为人们可以通过将请求写入该URL来模拟数千个upvotes。

如何解决我的评级系统问题？

1 个答案: