听说最近下载妹子图很火？
Nodejs （javascrpt）自然不能落后~
虽然从没写过像样的Nodejs程序，但作为至少翻过书的前端同学来说，Nodejs用得还蛮顺手的哈~
花了一点事件学习了下Nodejs的网页获取和文件下载方法，没事乱捣腾就写了这个半成品的下载器
使用方法：
1）新建一个download目录
2）新建download.js（其实名字随便取），并复制到download目录下
3）复制两段代码到download.js中
4）打开命令行工具，并将当前目录转到与download目录下
5）在命令行中输入：node download.js
6）等着收妹子图吧~
简单的妹子图对象(新增断定下载支持)
var http = require('http'); var fs = require('fs'); function Mzitu(options) { this.id = 1; this.initialize.call(this, options); return this; } Mzitu.prototype = { constructor: Mzitu, initialize: function _initialize(options) { this.baseUrl = options.baseUrl; this.dir = options.dir || ''; this.reg = options.reg; this.total = options.total; this.page = options.from || 1; }, start: function _start() { this.getPage(); }, getPage: function _getPage() { var self = this, data = null; if (this.page <= this.total) { http.get(this.baseUrl + this.page, function (res) { res.setEncoding("utf8"); res.on('data', function (chunk) { data += chunk; }).on('end', function () { self.parseData(data); }); }); } }, parseData: function _parseData(data) { var res = [], match; while ((match = this.reg.exec(data)) != null) { res.push(match[1]); } this.download(res); }, download: function _download(resource) { var self = this, currentPage = self.page; resource.forEach(function (src, idx) { var filename = src.substring(src.lastIndexOf('https://www.jb51.net/') + 1), writestream = fs.createWriteStream(self.dir + filename); http.get(src, function (res) { res.pipe(writestream); }); writestream.on('finish', function () { console.log('page: ' + currentPage + ' id: ' + self.id++ + ' download: ' + filename); }); }); self.page++; self.getPage(); } };
妹子图下载启动方式
var mzitu = new Mzitu({ baseUrl: 'http://www.mzitu.com/share/comment-page-', dir: '', reg: /<img\s*src="(.*?)"\s*alt=".*"\s*\/>/g, total: 141, from: 1 }); mzitu.start();