Node.js实现批量下载图片简单操作示例

前端  /  管理员 发布于 4年前   778

本文实例讲述了Node.js实现批量下载图片简单操作。分享给大家供大家参考，具体如下：

使用Node.js批量下载图片

首先要获取到图片链接：

const img = [  "http://yw-yx.oss-cn-hangzhou.aliyuncs.com/ywwl-jylesson/2019/08/52218400506629423.jpg",  "http://yw-yx.oss-cn-hangzhou.aliyuncs.com/ywwl-jylesson/2019/08/52218400540139692.jpg",  "http://yw-yx.oss-cn-hangzhou.aliyuncs.com/ywwl-jylesson/2019/08/52218400540118251.jpg",  "http://yw-yx.oss-cn-hangzhou.aliyuncs.com/ywwl-jylesson/2019/08/52218400540069242.jpg",  "http://yw-yx.oss-cn-hangzhou.aliyuncs.com/ywwl-jylesson/2019/08/52218400681111127.jpg",  "http://yw-yx.oss-cn-hangzhou.aliyuncs.com/ywwl-jylesson/2019/08/52218400703641344.jpg",  "http://yw-yx.oss-cn-hangzhou.aliyuncs.com/ywwl-jylesson/2019/08/52218400854321042.jpg",  "http://yw-yx.oss-cn-hangzhou.aliyuncs.com/ywwl-jylesson/2019/08/52218400847773096.jpg",  "http://yw-yx.oss-cn-hangzhou.aliyuncs.com/ywwl-jylesson/2019/08/52218400859178000.jpg",  "http://yw-yx.oss-cn-hangzhou.aliyuncs.com/ywwl-jylesson/2019/08/52218400865596453.jpg",  "http://yw-yx.oss-cn-hangzhou.aliyuncs.com/ywwl-jylesson/2019/08/52218400902911909.jpg",  "http://yw-yx.oss-cn-hangzhou.aliyuncs.com/ywwl-jylesson/2019/08/52218400953029599.jpg",  "http://yw-yx.oss-cn-hangzhou.aliyuncs.com/ywwl-jylesson/2019/08/52218400989455804.jpg",  "http://yw-yx.oss-cn-hangzhou.aliyuncs.com/ywwl-jylesson/2019/08/52218401005976517.jpg",  "http://yw-yx.oss-cn-hangzhou.aliyuncs.com/ywwl-jylesson/2019/08/52218400968714979.jpg",  "http://yw-yx.oss-cn-hangzhou.aliyuncs.com/ywwl-jylesson/2019/08/52218401035049758.jpg",  "http://yw-yx.oss-cn-hangzhou.aliyuncs.com/ywwl-jylesson/2019/08/52218401049432628.jpg",  "http://yw-yx.oss-cn-hangzhou.aliyuncs.com/ywwl-jylesson/2019/08/52218401077574176.jpg",  "http://yw-yx.oss-cn-hangzhou.aliyuncs.com/ywwl-jylesson/2019/08/52218401130741871.jpg",  "http://yw-yx.oss-cn-hangzhou.aliyuncs.com/ywwl-jylesson/2019/08/52218401189588504.jpg",  "http://yw-yx.oss-cn-hangzhou.aliyuncs.com/ywwl-jylesson/2019/08/52218401178924270.jpg",  "http://yw-yx.oss-cn-hangzhou.aliyuncs.com/ywwl-jylesson/2019/08/52218401236159469.jpg",  "http://yw-yx.oss-cn-hangzhou.aliyuncs.com/ywwl-jylesson/2019/08/52218401233410806.jpg",  "http://yw-yx.oss-cn-hangzhou.aliyuncs.com/ywwl-jylesson/2019/08/52218401271226281.jpg",  "http://yw-yx.oss-cn-hangzhou.aliyuncs.com/ywwl-jylesson/2019/08/52218401296600908.jpg",  "http://yw-yx.oss-cn-hangzhou.aliyuncs.com/ywwl-jylesson/2019/08/52218401331496769.jpg",  "http://yw-yx.oss-cn-hangzhou.aliyuncs.com/ywwl-jylesson/2019/08/52218401294723014.jpg",  "http://yw-yx.oss-cn-hangzhou.aliyuncs.com/ywwl-jylesson/2019/08/52218401355737956.jpg",  "http://yw-yx.oss-cn-hangzhou.aliyuncs.com/ywwl-jylesson/2019/08/52218401375565373.jpg",  "http://yw-yx.oss-cn-hangzhou.aliyuncs.com/ywwl-jylesson/2019/08/52218401430489282.jpg",  "http://yw-yx.oss-cn-hangzhou.aliyuncs.com/ywwl-jylesson/2019/08/52218401429130694.jpg",  "http://yw-yx.oss-cn-hangzhou.aliyuncs.com/ywwl-jylesson/2019/08/52218401443905011.jpg",  "http://yw-yx.oss-cn-hangzhou.aliyuncs.com/ywwl-jylesson/2019/08/52218401494231215.jpg",  "http://yw-yx.oss-cn-hangzhou.aliyuncs.com/ywwl-jylesson/2019/08/52218401470554382.jpg",  "http://yw-yx.oss-cn-hangzhou.aliyuncs.com/ywwl-jylesson/2019/08/52218401544523253.jpg",  "http://yw-yx.oss-cn-hangzhou.aliyuncs.com/ywwl-jylesson/2019/08/52218401585803008.jpg",  "http://yw-yx.oss-cn-hangzhou.aliyuncs.com/ywwl-jylesson/2019/08/52218401632787055.jpg",  "http://yw-yx.oss-cn-hangzhou.aliyuncs.com/ywwl-jylesson/2019/08/52218401681076773.jpg",  "http://yw-yx.oss-cn-hangzhou.aliyuncs.com/ywwl-jylesson/2019/08/52218401666198563.jpg",  "http://yw-yx.oss-cn-hangzhou.aliyuncs.com/ywwl-jylesson/2019/08/52218401687089797.jpg",  "http://yw-yx.oss-cn-hangzhou.aliyuncs.com/ywwl-jylesson/2019/08/52218401796465344.jpg",  "http://yw-yx.oss-cn-hangzhou.aliyuncs.com/ywwl-jylesson/2019/08/52218401847533545.jpg"];

批量下载图片：

var fs = require('fs');var request = require("request");img.forEach(src => {  var writeStream = fs.createWriteStream(src.split('/2019/08/')[1]);  var readStream = request(src)  readStream.pipe(writeStream);  readStream.on('end', function() {    console.log('文件下载成功');  });  readStream.on('error', function() {    console.log(1);    // console.log("错误信息:" + err)  })  writeStream.on("finish", function() {    console.log("文件写入成功");    writeStream.end();  });});

希望本文所述对大家node.js程序设计有所帮助。

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