从这个问题的不可接受答案之一中调整代码：
var express = require('express'), fs = require('fs'), app = express()app.get('/', function (req, res) { var filePath = 'music.mp3'; var stat = fs.statSync(filePath); var total = stat.size; if (req.headers.range) { var range = req.headers.range; var parts = range.replace(/bytes=/, "").split("-"); var partialstart = parts[0]; var partialend = parts[1]; var start = parseInt(partialstart, 10); var end = partialend ? parseInt(partialend, 10) : total-1; var chunksize = (end-start)+1; var readStream = fs.createReadStream(filePath, {start: start, end: end}); res.writeHead(206, { 'Content-Range': 'bytes ' + start + '-' + end + '/' + total, 'Accept-Ranges': 'bytes', 'Content-Length': chunksize, 'Content-Type': 'video/mp4' }); readStream.pipe(res); } else { res.writeHead(200, { 'Content-Length': total, 'Content-Type': 'audio/mpeg' }); fs.createReadStream(filePath).pipe(res); }});
