[英]NodeJS + AngularJS + File Upload - connect-busboy doesn't call callback
[英]nodejs, connect-busboy. Upload few files
通过 busboy 上传几个文件时,我遇到了事件问题。 我的代码:
app.post('/multiupload', function(req, res) {
var fstream;
var files = [];
var busboy = new Busboy({headers: req.headers});
busboy.on('file', function (fieldname, file, filename) {
fstream = fs.createWriteStream(__dirname + '/../static/uploaded/' + filename);
file.pipe(fstream);
fstream.on('close', function(){
console.log('file ' + filename + ' uploaded');
files.push(filename);
});
});
busboy.on('end', function(){console.log('END')});
busboy.on('finish', function(){
console.log('finish, files uploaded ', files);
res.redirect('back');
});
req.pipe(busboy);
});
我的表格(翡翠模板)
form(method="POST", action="/multiupload" name="multiupload_form", enctype="multipart/form-data")
input(type='file' name='multifile', multiple)
input(type="submit" value="Upload!")
事件“结束”被忽略,在文件上传过程中完成触发。 我哪里错了?
服务器控制台报告:
file 111.gz uploaded
file 222.mp4 uploaded
file 333.jpg uploaded
finish, files uploaded [ '111.gz', '222.mp4', '333.jpg' ]
file 444 uploaded
file 555.jpg uploaded
busboy
不会发出end
事件。 一旦处理了整个请求并且已完全读取所有file
流,就会发出finish
事件。 所以问题是底层文件描述符的关闭发生在下一个滴答(左右),它发生在发出finish
之后。
如果您需要知道所有文件描述符何时关闭,那么您需要想出一种方法来跟踪发出了多少close
事件。
当文件事件关闭时调用 close 事件。 您可以在文件事件中跟踪文件计数,并可以在关闭事件中使用此计数器查看所有文件何时上传。
下面是你可以尝试的东西
let counter = 0
busboy.on('file', function (fieldname, file, filename) {
fstream = fs.createWriteStream(__dirname + '/../static/uploaded/' + filename);
file.pipe(fstream);
counter++;
fstream.on('close', function(){
counter--;
console.log('file ' + filename + ' uploaded');
files.push(filename);
if(counter == 0){
res.send({message: "All Files Uploaded", })
}
});
});
req.pipe(busboy);
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