Shulou(Shulou.com)06/03 Report--

This article mainly introduces the website how to carry out the anti-crawler mechanism, has a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, let the editor take you to understand it.

1. To make a joint decision, UserAgent is the identity tag of the requesting browser and the user agent.

The anti-crawler mechanism identifies the crawler by determining that there is no UA in the header of the access request, which is low-level and will not be regarded as the only criterion, because the anti-crawler is very simple and can be attacked with a random number of UA.

2. Pass the Cookie judgment.

Cookie is to verify the password login of a membership account to determine how often the account will be crawled in a short period of time. This method is also difficult to resist crawlers, and it is necessary to choose multi-account crawling.

3. Based on the number of visits.

The anti-crawler mechanism determines whether it is a crawler by the number of visits to a single IP, so the crawler can visit the target website multiple times in a short time. This kind of anti-crawling is difficult to resist and can only be solved by changing the IP.

4. Determined by the verification code.

Anti-crawler is a cost-effective anti-crawler implementation method, usually need to visit the OCR CAPTCHA recognition platform, or use TesseractOCR for recognition, or through neural network training to identify CAPTCHA and so on.

5. Load dynamic pages.

Dynamically loaded websites are often used to facilitate users to click and see, and there is no way to interact with the crawler, which greatly increases the difficulty of the crawler.

Generally speaking, the information that users climb to the website will be restricted by "crawlers", which will hinder users' access to information.

Thank you for reading this article carefully. I hope the article "how to carry out the anti-crawler mechanism on the website" shared by the editor will be helpful to everyone. At the same time, I also hope that you will support and pay attention to the industry information channel. More related knowledge is waiting for you to learn!

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