nodejs用request下载图片

安装依赖

npm install request

代码

var fs = require('fs');
var request = require("request");
var src = "https://www.google.com.hk/images/srpr/logo3w.png";
var writeStream = fs.createWriteStream('image.png');
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("错误信息:" + err)
})
writeStream.on("finish", function() {
    console.log("文件写入成功");
    writeStream.end();
});