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Nodejs crawler how to start quickly, I believe that many inexperienced people do not know what to do, so this paper summarizes the causes of the problem and solutions, through this article I hope you can solve this problem.

Nodejs supports asynchronous and concurrent architecture and can collect data quickly. If you use python for asynchronous implementation, you will need a lot of work, and debugging is also very time-consuming. Under the input of short working time, Nodejs crawler is not only easy to use, but also several times more efficient than python crawler. In order to avoid the anti-crawling strategy of some websites, using the crawler agent IP can collect data continuously and stably. Here is my code:

Const request = require ("request"); / / Target page const targetUrl = "http://httpbin.org/ip";// proxy server (product website www.16yun.cn) const proxyHost =" t.16yun.cn "; const proxyPort =" 31111 "; / / Agent verification information const proxyUser =" username "; const proxyPass =" password "; const proxyUrl =" http://" + proxyUser + ":" + proxyPass + "@" + proxyHost + ":" + proxyPort Const proxiedRequest = request.defaults ({'proxy': proxyUrl}); const options = {url: targetUrl, headers: {}}; proxiedRequest. Get (options, function (err, res, body) {console.log ("got response:" + res.statusCode);}) .on ("error", function (err) {console.log (err);}) After reading the above, have you mastered how to get started quickly with nodejs crawlers? If you want to learn more skills or want to know more about it, you are welcome to follow the industry information channel, thank you for reading!

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