Question

我正在尝试使用节点模块vtt2srt将VTT字符串转换为SRT文件并保存输出。它只能工作一次，并且我的字幕可以正确保存，但是如果我碰到了端点，第二次节点将崩溃，并显示以下错误：

Error: write after end
at writeAfterEnd

我尝试了.close .on（'close'）的所有组合

我从前端发送了唯一的vid和VTT数据

router.post('/downloadsubs', function(req,res,next) {
    var vttObj = webvtt.compile(req.body.data);

    fs.unlink(__dirname + '/../static/videos/'+req.body.vid+'/subtitles.srt', function(){
        srtStream.write(vttObj);
        var writestream = fs.createWriteStream(__dirname + '/../static/videos/'+req.body.vid+'/subtitles.srt')
        srtStream.end()
        srtStream.pipe(writestream)
        res.send(req.body.vid);
    }) 
})

Answer 1

我弄清楚我的问题所在，希望有一天对其他人有用。

以前，我需要在路由器文件的开头添加模块：

const vtt2srt = require('node-vtt-to-srt');
const srtStream = vtt2srt();

router.post('/downloadsubs', function(req,res,next) {
    var vttObj = webvtt.compile(req.body.data);

    fs.unlink(__dirname + '/../static/videos/'+req.body.vid+'/subtitles.srt', function(){
        srtStream.write(vttObj);
        srtStream.end()
        var writestream = fs.createWriteStream(__dirname + '/../static/videos/'+req.body.vid+'/subtitles.srt');
        srtStream.pipe(writestream)
        writestream.on('finish', function () { res.send(req.body.vid) });
    })
})

现在，我在路由器方法中创建了一个新的srtStream：

const vtt2srt = require('node-vtt-to-srt');

router.post('/downloadsubs', function(req,res,next) {
    var srtStream = vtt2srt();
    var vttObj = webvtt.compile(req.body.data);

    fs.unlink(__dirname + '/../static/videos/'+req.body.vid+'/subtitles.srt', function(){
        srtStream.write(vttObj);
        srtStream.end()
        var writestream = fs.createWriteStream(__dirname + '/../static/videos/'+req.body.vid+'/subtitles.srt');
        srtStream.pipe(writestream)
        writestream.on('finish', function () { res.send(req.body.vid) });
    })
})

它有效。

如何关闭fs.createWriteStream？

1 个答案: