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

This article is about the analysis of the reasons why crawlers need to use proxy tools. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look.

Crawling agent is an indispensable link in the crawling process of reptiles. After getting a certain amount of data, you will find that the program will report errors to you from time to time, and more and more frequently. It indicates that your crawler is recognized by its anti-scraping system and forbids your crawler. In general, you will be told that the connection timed out, the connection was broken, or even interrupted the program directly.

The proxy tool is a special string that is widely used to display browser client information, allowing the server to identify the operating system and version, CPU type, browser and version, browser rendering engine, browser language, and so on, used by the client.

Each browser uses a different user agent string as its own logo, and when a search engine accesses a web page through a web crawler, the agent string also displays its own logo, which is why site statistics reports can count browser information, crawler information, and so on. The site needs to get the information of the user client and understand the content of the website displayed on the client side. Some sites judge that UA is sent to different operating systems and different browsers send different web pages, but it can also cause some web pages to not display properly in some browsers.

The random use of proxy IP tools can solve the problems of most websites, but there will still be some sites with strong anti-scraping measures, and you also need to use proxy IP to break IP restrictions.

Thank you for reading! This is the end of this article on the analysis of the reasons why reptiles need to use proxy tools. I hope the above content can be of some help to you, so that you can learn more knowledge. If you think the article is good, you can share it for more people to see!

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