将你的内容放在验证码后面意味着机器人将很难访问你的内容。然而，人类会不方便，所以这可能是不可取的。

将你的内容放在验证码后面意味着机器人将很难访问你的内容。然而，人类会不方便，所以这可能是不可取的。

快速解决这个问题的方法是设置一个陷阱。

Make a page that if it's opened a certain amount of times or even opened at all, will collect certain information like the IP and whatnot (you can also consider irregularities or patterns but this page shouldn't have to be opened at all). Make a link to this in your page that is hidden with CSS display:none; or left:-9999px; positon:absolute; try to place it in places that are less unlikely to be ignored like where your content falls under and not your footer as sometimes bots can choose to forget about certain parts of a page. In your robots.txt file set a whole bunch of disallow rules to pages you don't want friendly bots (LOL, like they have happy faces!) to gather information on and set this page as one of them. Now, If a friendly bot comes through it should ignore that page. Right but that still isn't good enough. Make a couple more of these pages or somehow re-route a page to accept differnt names. and then place more disallow rules to these trap pages in your robots.txt file alongside pages you want ignored. Collect the IP of these bots or anyone that enters into these pages, don't ban them but make a function to display noodled text in your content like random numbers, copyright notices, specific text strings, display scary pictures, basically anything to hinder your good content. You can also set links that point to a page which will take forever to load ie. in php you can use the sleep() function. This will fight the crawler back if it has some sort of detection to bypass pages that take way too long to load as some well written bots are set to process X amount of links at a time. If you have made specific text strings/sentences why not go to your favorite search engine and search for them, it might show you where your content is ending up.

无论如何，如果你从战术和创造性的角度思考，这可能是一个很好的起点。最好的办法就是学习机器人是如何工作的。

我还会考虑打乱一些ID或页面元素上的属性显示方式:

<a class="someclass" href="../xyz/abc" rel="nofollow" title="sometitle"> 

每次都会改变它的形式，因为一些机器人可能会在你的页面或目标元素中寻找特定的模式。

<a title="sometitle" href="../xyz/abc" rel="nofollow" class="someclass"> 

id="p-12802" > id="p-00392"

我已经做了很多网络抓取，并在我的博客上总结了一些技巧来阻止网络抓取，基于我觉得讨厌的东西。

这是你的用户和刮刀者之间的权衡。如果你限制IP，使用验证码，要求登录，等等，你会给刮刀器带来困难。但这也可能会赶走真正的用户。

对不起，这真的很难做到……

我建议你礼貌地要求他们不要使用你的内容(如果你的内容是受版权保护的)。

如果是这样，他们不把它撤下来，那么你可以采取进一步的行动，给他们发一封停止通知信。

一般来说，无论你做什么来防止抓取可能最终会产生更负面的影响，例如可访问性，机器人/蜘蛛等。

可能对初学者不利的事情:

IP封锁 大量使用ajax 检查引用请求头 需要登录

通常会有帮助的事情:

每周改变你的布局 robots . txt

有帮助但会让你的用户讨厌你的东西:

验证码