How to download pictures in node.js-JS Tutorial-php.cn

This article introduces you to the 2 ways to download images in node.js and the implementation code for downloading remote images through example code. It is very good and has reference value. Friends who need it can refer to it

Specific code As shown below:

var request=require("request"); var fs=require("fs"); function download1(url,filename,fn){ request(url).pipe(fs.createWriteStream(filename).on("close",function(err,res){ if(err){ console.log(err); }else{ fn&&fn(); } })) } function download2(url,filename,fn){ request.get({uri:url, encoding:'binary'},function(err,res){ if(!err){ fs.writeFile(filename,res.body,"binary",function(err,res){ if(!err){ fn&&fn(); }else{ console.log(err); } }) } }) }

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ps: Let’s take a look at the implementation code of nodejs downloading remote images. The specific code is as follows:

var express = require('express'); var request = require('request'); var http = require('http'); var url = require('url'); var fs = require("fs"); var router = express.Router(); /* GET home page. */ router.get('/', function (req, res, next) { var url = "http://www.valu.cn/images/1.gif"; //request('http://www.valu.cn/images/1.gif').pipe(fs.createWriteStream('./public/upload/downImg/logonew.png')); var req = http.get(url, function (res) { var imgData = ""; res.setEncoding("binary"); //一定要设置response的编码为binary否则会下载下来的图片打不开 res.on("data", function (chunk) { imgData += chunk; }); res.on("end", function () { fs.writeFile("./public/upload/downImg/logonew.png", imgData, "binary", function (err) { if (err) { console.log("保存失败"); } console.log("保存成功"); }); }); res.on("error", function (err) { console.log("请求失败"); }); }); req.on('error', function (err) { console.log("请求失败2" + err.message); }); res.render('index', {title: '首页2'}); }); module.exports = router;

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The above is what I compiled for everyone. I hope it will be helpful to everyone in the future.

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