111 lines
5.3 KiB
Markdown
111 lines
5.3 KiB
Markdown
# Colly
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Lightning Fast and Elegant Scraping Framework for Gophers
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Colly provides a clean interface to write any kind of crawler/scraper/spider.
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With Colly you can easily extract structured data from websites, which can be used for a wide range of applications, like data mining, data processing or archiving.
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[](https://godoc.org/github.com/gocolly/colly)
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[](#backers) [](#sponsors) [](https://travis-ci.org/gocolly/colly)
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[](http://goreportcard.com/report/gocolly/colly)
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[](https://github.com/gocolly/colly/tree/master/_examples)
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[](https://codecov.io/github/gocolly/colly?branch=master)
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[](https://app.fossa.io/projects/git%2Bgithub.com%2Fgocolly%2Fcolly?ref=badge_shield)
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[](https://twitter.com/gocolly)
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## Features
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* Clean API
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* Fast (>1k request/sec on a single core)
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* Manages request delays and maximum concurrency per domain
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* Automatic cookie and session handling
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* Sync/async/parallel scraping
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* Caching
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* Automatic encoding of non-unicode responses
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* Robots.txt support
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* Distributed scraping
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* Configuration via environment variables
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* Extensions
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## Example
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```go
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func main() {
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c := colly.NewCollector()
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// Find and visit all links
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c.OnHTML("a[href]", func(e *colly.HTMLElement) {
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e.Request.Visit(e.Attr("href"))
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})
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c.OnRequest(func(r *colly.Request) {
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fmt.Println("Visiting", r.URL)
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})
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c.Visit("http://go-colly.org/")
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}
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```
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See [examples folder](https://github.com/gocolly/colly/tree/master/_examples) for more detailed examples.
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## Installation
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```
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go get -u github.com/gocolly/colly/...
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```
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## Bugs
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Bugs or suggestions? Visit the [issue tracker](https://github.com/gocolly/colly/issues) or join `#colly` on freenode
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## Other Projects Using Colly
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Below is a list of public, open source projects that use Colly:
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* [greenpeace/check-my-pages](https://github.com/greenpeace/check-my-pages) Scraping script to test the Spanish Greenpeace web archive
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* [altsab/gowap](https://github.com/altsab/gowap) Wappalyzer implementation in Go
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* [jesuiscamille/goquotes](https://github.com/jesuiscamille/goquotes) A quotes scrapper, making your day a little better!
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* [jivesearch/jivesearch](https://github.com/jivesearch/jivesearch) A search engine that doesn't track you.
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If you are using Colly in a project please send a pull request to add it to the list.
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## Contributors
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This project exists thanks to all the people who contribute. [[Contribute]](CONTRIBUTING.md).
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<a href="https://github.com/gocolly/colly/graphs/contributors"><img src="https://opencollective.com/colly/contributors.svg?width=890" /></a>
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## Backers
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Thank you to all our backers! 🙏 [[Become a backer](https://opencollective.com/colly#backer)]
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<a href="https://opencollective.com/colly#backers" target="_blank"><img src="https://opencollective.com/colly/backers.svg?width=890"></a>
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## Sponsors
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Support this project by becoming a sponsor. Your logo will show up here with a link to your website. [[Become a sponsor](https://opencollective.com/colly#sponsor)]
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<a href="https://opencollective.com/colly/sponsor/0/website" target="_blank"><img src="https://opencollective.com/colly/sponsor/0/avatar.svg"></a>
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<a href="https://opencollective.com/colly/sponsor/1/website" target="_blank"><img src="https://opencollective.com/colly/sponsor/1/avatar.svg"></a>
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<a href="https://opencollective.com/colly/sponsor/2/website" target="_blank"><img src="https://opencollective.com/colly/sponsor/2/avatar.svg"></a>
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<a href="https://opencollective.com/colly/sponsor/3/website" target="_blank"><img src="https://opencollective.com/colly/sponsor/3/avatar.svg"></a>
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<a href="https://opencollective.com/colly/sponsor/4/website" target="_blank"><img src="https://opencollective.com/colly/sponsor/4/avatar.svg"></a>
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<a href="https://opencollective.com/colly/sponsor/5/website" target="_blank"><img src="https://opencollective.com/colly/sponsor/5/avatar.svg"></a>
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<a href="https://opencollective.com/colly/sponsor/6/website" target="_blank"><img src="https://opencollective.com/colly/sponsor/6/avatar.svg"></a>
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<a href="https://opencollective.com/colly/sponsor/7/website" target="_blank"><img src="https://opencollective.com/colly/sponsor/7/avatar.svg"></a>
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<a href="https://opencollective.com/colly/sponsor/8/website" target="_blank"><img src="https://opencollective.com/colly/sponsor/8/avatar.svg"></a>
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<a href="https://opencollective.com/colly/sponsor/9/website" target="_blank"><img src="https://opencollective.com/colly/sponsor/9/avatar.svg"></a>
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## License
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[](https://app.fossa.io/projects/git%2Bgithub.com%2Fgocolly%2Fcolly?ref=badge_large)
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