我从this post中检索了此代码，但是，当我使用此代码时，出现此错误
Attempting to call a function in a renderer window that has been closed or released.
Function provided here: :127:28
在第127行：session.defaultSession.on('will-download', function (event, downloadItem, webContents) {
开始下载时，它会显示错误消息，指出文件为空，但我的文件不为空
下载文件时进度条显示为0％
在EJS文件中
function sendURL(URL, format) {
let tile = "<%= title %>"
tit = tile.replace(/[`~!@#$^&'",.<>\{\}\[\]\\\/]/gi, '')
window.location.href = `/download?URL=${URL}&title=${tit}&format=${format}`
}
[... More code ...]
const {session} = require('electron').remote
session.defaultSession.on('will-download', function (event, downloadItem, webContents) {
"use strict";
if (downloadItem.getTotalBytes() === 0) {
swal({
position: 'center',
type: 'error',
title: 'Fichier vide !',
showConfirmButton: true,
icon: "warning"
})
}
downloadItem.on('updated', function (event, state) {
process.stdout.write(downloadItem.getTotalBytes())
if (state === 'interrupted') {
swal({
position: 'center',
type: 'error',
title: 'Téléchargement interrompu',
showConfirmButton: true,
icon: "info",
})
} else if (state === 'progressing') {
let jQueryprogress = $(".progress")
let jQuerybar = $(".progress__bar")
let jQuerytext = $(".progress__text")
let percent = 0
let update
let resetColors
let speed = 200
let orange = 30
let yellow = 55
let green = 85
let timer
resetColors = function () {
jQuerybar
.removeClass("progress__bar--green")
.removeClass("progress__bar--yellow")
.removeClass("progress__bar--orange")
.removeClass("progress__bar--blue")
jQueryprogress
.removeClass("progress--complete")
}
update = function () {
timer = setTimeout(function () {
try {
let percentage = downloadItem.getReceivedBytes() / downloadItem.getTotalBytes()
percent = percentage * 100
percent = parseFloat(percent.toFixed(2))
update()
} catch (error) {
clearTimeout(timer)
percent = 100
resetColors()
jQueryprogress.addClass("progress--complete")
jQuerybar.addClass("progress__bar--blue")
jQuerytext.find("em").text("Complete")
percent = 0
}
jQuerytext.find("em").text(percent + "%")
if (downloadItem.isPaused()) jQuerytext.find("span").text('En pause')
else jQuerytext.find("span").text(downloadItem.getFilename())
if (percent >= green) {
jQuerybar.addClass("progress__bar--green")
}
else if (percent >= yellow) {
jQuerybar.addClass("progress__bar--yellow")
}
else if (percent >= orange) {
jQuerybar.addClass("progress__bar--orange")
}
speed = Math.floor(Math.random() * 100)
jQuerybar.css({ width: percent + " %" })
}, speed)
}
$(".itemDL").addClass('bcenter')
jQueryprogress.addClass("progress--active")
update()
resetColors()
}
})
downloadItem.once('done', function (event, state) {
console.log("Inside download done function " + event + state)
if (state === 'completed') {
setTimeout(function () {
$(".itemDL").removeClass("bcenter")
swal({
position: 'center',
type: 'success',
title: 'Téléchargement terminé',
showConfirmButton: true,
icon: "success",
})
}, 50)
} else if (state === 'cancelled' || state === "interrupted") {
$(".itemDL").removeClass("bcenter")
swal({
position: 'center',
type: 'error',
title: 'Téléchargement annulé ou interrompu',
showConfirmButton: true,
icon: "error",
})
} else {
$(".itemDL").removeClass("bcenter")
swal({
position: 'center',
type: 'error',
title: 'Téléchargement échoué',
showConfirmButton: true,
icon: "error"
})
}
})
session.defaultSession.clearStorageData([], function () { console.log(' cleared all storages after download ') })
session.defaultSession.clearCache(function () { console.log('cleared all caches after download') })
})
在router.js中
expressApp.get('/download', async (req, res) => {
let URL = req.query.URL
let title = req.query.title
let format = req.query.format
res.header('Content-Disposition', `attachment; filename="${title}.${format}"`)
await ytdl(URL, {
format: format
}).pipe(res)
})