Node.js實現批量下載圖片簡單操作示例
阿新 • • 發佈：2020-01-20
本文例項講述了Node.js實現批量下載圖片簡單操作。分享給大家供大家參考，具體如下：
使用Node.js批量下載圖片
首先要獲取到圖片連結：
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" ];
批量下載圖片：
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('檔案下載成功');
});
readStream.on('error',function() {
console.log(1);
// console.log("錯誤資訊:" + err)
})
writeStream.on("finish",function() {
console.log("檔案寫入成功");
writeStream.end();
});
});
希望本文所述對大家node.js程式設計有所幫助。