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[英]NodeJS + AngularJS + File Upload - connect-busboy doesn't call callback
[英]nodejs, connect-busboy. Upload few files
通過 busboy 上傳幾個文件時,我遇到了事件問題。 我的代碼:
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“結束”被忽略,在文件上傳過程中完成觸發。 我哪里錯了?
服務器控制台報告:
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
不會發出end
事件。 一旦處理了整個請求並且已完全讀取所有file
流,就會發出finish
事件。 所以問題是底層文件描述符的關閉發生在下一個滴答(左右),它發生在發出finish
之后。
如果您需要知道所有文件描述符何時關閉,那么您需要想出一種方法來跟蹤發出了多少close
事件。
當文件事件關閉時調用 close 事件。 您可以在文件事件中跟蹤文件計數,並可以在關閉事件中使用此計數器查看所有文件何時上傳。
下面是你可以嘗試的東西
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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