Buffer
(logo.png)
以下代码读取logo.png为buffer类型
然后将buffer转化为string
可以将字符串配置： data:image/png;Base64,Buffer.toString()
var fs = require(‘fs‘)fs.readFile(‘logo.png‘,function(err,origin_buffer){ ???console.log(‘origin_buffer是否Buffer格式：‘+Buffer.isBuffer(origin_buffer)) ???//console.log(‘读取到origin_buffer:‘ + origin_buffer) ???//创建文件 ???fs.writeFile(‘log_buffer.png‘,origin_buffer,function(err){ ???????if(err) console.log(err) ???}) ???//var base84Image = new Buffer(origin_buffer).toString(‘base64‘) ???//转为字符串 ???var base64Image = origin_buffer.toString(‘base64‘) ???console.log(‘字符串base64Image:‘ + base64Image) ???var decodedImage = new Buffer(base64Image, ‘base64‘) ???//console.log(‘编码decodedImage:‘+decodedImage) ???//console.log(‘比较origin_buffer和decodedImage：‘ + Buffer.compare(origin_buffer,decodedImage)) ???fs.writeFile(‘logo_decoded.png‘,decodedImage,function(err){ ???????if(err) console.log(err) ???})})11慕课网《进击Node.js基础（一）》Buffer和Stream
原文地址：https://www.cnblogs.com/-beauTiFul/p/9200760.html