Among the universal crawlers, the ForeSpider crawler has the strongest collection speed and collection capabilities, supporting the collection of login, Cookie, Post, https, verification code, JS, Ajax, keyword search and other technologies. , the collection efficiency can reach 5 million pieces of data/day on an ordinary desktop computer. This kind of collection speed is 8 to 10 times that of ordinary general-purpose crawlers.
For some anti-crawler websites, in addition to the verification code itself, there are generally more anti-crawler measures, such as the National Foundation for Nature website, the National Enterprise Information Disclosure System, etc. The most difficult websites have no problem at all. You can use ForeSpider's built-in crawler scripting language system to collect difficult websites with just a few lines of code. For a large number of website collection needs, the ForeSpider crawler can start scheduled collection after the rule template is fixed. Supports data cleaning multiple times.
For keyword search needs, the ForeSpider crawler supports keyword search and data mining functions. It comes with a keyword library and data mining dictionary, which can effectively collect keyword-related content.
You can download the free version, which does not limit the collection function. There is a detailed operation manual to learn from.