CRAWL-PET

Simplified crawler framework of Nodejs

Installation

$ npm install crawl-pet -g

Usage

Create a project

$ crawl-pet new [url]

Generate crawler.js file

// crawler.js

module.exports = {
    projectDir: __dirname,
    url: "https://imgur.com",
    outdir: "/downloade/imgur.com",
    saveMode: "type",
    keepName: true,
    limits: 5,
    timeout: 60000,
    limitWidth: 700,
    limitHeight: 0,
    proxy: "http://127.0.0.1:1087",
    userAgent: "Mozilla/5.0 .... Chrome/62.0.3202.62 Safari/537.36",
    cookies: null,

    fileTypes: "png|gif|jpg|jpeg|mp4",
    sleep: 1000,
    crawl_data: {},
    
    // crawl_js: "parser.js"
  
  	/**
     * Parser part
     */
  
  	// init(queen) {},
    // prep(queen) {},
    // start(queen) {},
    // filter(url) {},
    // filterDownload(url) {},
    // willLoad(request) {},
    // loaded(body, links, files, crawler) {},

}

Crawler parser methods

• init(queen) 爬虫初始化时被调用

• prep(queen) 第一次运行，或传入 --restart 参数时被调用

• start(queen) 开始爬取时被调用

• filter(url) 筛选页面的 url，返回 true 时同过，返回 false 排除

• filterDownload(url) 筛选下地的 url

• willLoad(request) 每个网络请求前被调用

• loaded(body, links, files, crawler) 每个网络请求返回时被调用

  ​

API

• Queen
  • Event:
    • start
    • loading
    • downloading
    • loaded
    • downloaded
    • appendPage
    • appendDownload
    • over
  • Queen.prototype.runing
  • Queen.prototype.db
  • Queen.prototype.loader
  • Queen.prototype.head
  • Queen.prototype.agent
  • Queen.prototype.start(restart)
  • Queen.prototype.over()
  • Queen.prototype.appendPage(url)
  • Queen.prototype.appendDownload(url)
  • Queen.prototype.load(url)
  • Queen.prototype.loadPage(url)
  • Queen.prototype.download(url, to)
  • Queen.prototype.saveContent(to, content)
  • Queen.prototype.read(name)
  • Queen.prototype.save(name, value)
• Crawler
  • Crawler.prototype.queen
  • Crawler.prototype.appendPage(url)
  • Crawler.prototype.appendDownload(url)
  • Crawler.prototype.load(url)
  • Crawler.prototype.loadPage(url)
  • Crawler.prototype.download(url, load)
  • Crawler.prototype.saveContent(to, content)
  • Crawler.prototype.read(name)
  • Crawler.prototype.save(name, value)

Command help

Crawl Pet Help:
  Usage: crawl-pet [path]
  
  Options:
    +new            [url]                                     新建一个项目
    -r, --restart                                             从起始地址重新加载
    -c, --config    <name[=value]>...                         读写项目配置
    -i, --info                                                查看项目的信息
    -l, --list      <page|download|local>                     查看队列数据
    -f, --find      <type> <keyword>                          查找队列的数据
    -d, --delete                                              删除匹配的队列数据
    --json                                                    对的数据以json格式输出
    --proxy         <127.0.0.1:1087>                          临时改变项目的代理配置
    --parser        <path>                                    临时改变项目的解析器
    --debug                                                   启用调试
    -v, --version                                             查看软件版本
    -h, --help                                                查看帮助信息

More configuration in crawler.js file!