javascript - 将 Base64 block 写入 writestream

Question

我与node.js v0.8建立了客户端/服务器套接字连接。客户端将jpg编码为base64字符串并发送给服务器。服务器正在接收这些 block 并将其写入写入流。写入数据后，新图像文件的大小与原始图像文件相同，但当我尝试打开它时显示损坏的消息。我的base64编码或流写入有问题吗？

Client.js 和 Server.js 片段:

//Client sending base64 encoded string from image

var net = require('net');
var fs = require('fs');

var socket = new net.Socket();

socket.connect(3000, '127.0.0.1', function() {

    var stream = fs.createReadStream(__dirname + '/node.jpg', {encoding: 'base64'});

    stream.on('data', function(chunk){
        socket.write(chunk, 'base64');
    });

});


//Server should write base64 string into new image file

var net = require('net');
var fs = require('fs');

var imageFilename = "node-copy.jpg";

var writeStream = fs.createWriteStream(__dirname + '/node-copy.jpg', {flags: 'a',  encoding: 'base64'});    

var server = net.createServer(function(socket){  

  socket.setEncoding('base64');

  socket.on("data", function(chunk){
    writeStream.write(chunk, 'base64');
  });

}).listen(3000, '127.0.0.1');

Answer 1

您将每个 block 编码为单独的实体，这是错误的做法。

使用流式base64模块，例如this one .