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

This article will explain in detail what problems will be encountered in general using crawlers. The editor thinks it is very practical, so I share it with you as a reference. I hope you can get something after reading this article.

At least half of the Internet traffic is caused by crawlers, and many enterprises use crawlers to collect data. although crawlers are widely used, they often encounter problems, which lead to problems in collecting information. what problems do you generally encounter with crawlers?

1, the problem of confusion, although we successfully caught the web page information, we can not successfully carry out data analysis.

Many times when we grab web information, we will find that the information we crawled is garbled.

2. Update the web page frequently, and the information on the Internet is always updated constantly.

Therefore, when we grab the information, we need to operate it regularly, that is, to set the time interval to grab the information, so as not to crawl the server updates of the website, and what we do is not to work hard.

3. Data analysis.

In fact, at this stage, basically our work has achieved great success, but the workload of data analysis is very large, and it takes a lot of time to complete large-scale data analysis.

4. Crawlers are prohibited on some websites.

In order to prevent some malicious crawling, some websites will set up anti-crawling programs, and you will find that a lot of data is displayed on the browser, but you can't catch it.

This is the end of this article on "what problems will be encountered with general reptiles". I hope the above content can be helpful to you, so that you can learn more knowledge. if you think the article is good, please share it for more people to see.

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