electron：2.通过COS上传视频video

1.点击文件按钮图标，判断上传文件类型：图片、视频、文件

    // 发送文件入口
		async sendFile() {
			const imageType = ['jpg', 'png', 'jpeg']
			const videoType = ['mkv', 'avi', 'mp4']
			const options = {
				filters: [
					{ name: 'Images', extensions: imageType },
					{ name: 'Videos', extensions: videoType },
					{ name: 'Files', extensions: ['zip', 'rar'] }
				]
			}
			const result = await dialog.showOpenDialog(options)
			if (!result.canceled && result.filePaths) {
				const filePaths = result.filePaths[0]
				const isImage = imageType.some((e) => filePaths.endsWith(e))
				const isVideo = videoType.some((e) => filePaths.endsWith(e))
				if (isImage) {
					this.sendImage(result)
				} else {
					this.sendVideo(result, isVideo)
				}
			}
		}

2.通过COS 上传demo

async sendFile(result, isVideo) {
  const filePaths = result.filePaths[0]
  const pathArr = filePaths.split(/\\/)
  const fileName = pathArr[pathArr.length - 1]
  const path = filePaths.replace(/\\/g, '/')
  const file = await this.srcToFile(path, fileName)
  const fileContentType = /\.zip$/.test(fileName)
    ? 'application/x-zip-compressed'
    : 'application/x-rar-compressed'
  let keyPath = `${common.isUat() ? 'pathUat' : 'pathProd'}`
  let data_taskId = ''
  this.cos.uploadFile(
    {
      Bucket,
      Region,
      Key: keyPath + fileName,
      ContentType: isVideo ? 'video/mp4' : fileContentType,
      Body: file,
      SliceSize: 1024 * 1024 * 5,
      onTaskReady: (taskId) => {
        data_taskId = `[data-taskId=${taskId}]`
        if (isVideo) {
          const fs = require('fs')
          const videoData = fs.readFileSync(path)
          const url = `data:video/mp4;base64,${videoData.toString('base64')}` // 获取本地视频的地址在页面显示
 
          let audioElement = new Audio(URL.createObjectURL(file))
          audioElement.addEventListener('loadedmetadata', (_event) => {
            let duration = common.formatDuraton(Math.floor(audioElement.duration)) // 获取视频时长
            console.log(duration);
          })
        }
      },
      onProgress: (info) => {
        console.log('onProgress', JSON.stringify(info))
        var percent = Math.floor(info.percent * 10000) / 100
        var speed = Math.floor((info.speed / 1024 / 1024) * 100) / 100
        console.log('进度：' + percent + '%; 速度：' + speed + 'Mb/s;')
      }
    },
    (err, data) => {
      if (err) {
        console.log('上传出错', err)
      } else {
        console.log('上传成功', data)
      }
    }
  )
}

3.根据本地路径创建文件对象

		// 根据本地路径创建文件对象
		srcToFile(src, fileName, mimeType) {
			return fetch(src)
				.then(function (res) {
					return res.arrayBuffer()
				})
				.then(function (buf) {
					return new File([buf], fileName)
				})
		}