vue+element+oss實現前端分片上傳和斷點續傳

<template>
 <div class="dashboard-editor-container">
 <el-upload
  class="upload-demo"
  action=""
  ref="upload"
  :file-list="fileList"
  :limit="2"
  :on-change="handleChange"
  :on-remove="handleRemove"
  :auto-upload="false"
  accept=""
 >
  <el-button slot="trigger" size="small" type="primary">選取文件</el-button>
  <el-button style="margin-left: 10px;" size="small" type="success" @click="submitForm">上傳到服務器</el-button>
  <el-button style="margin-left: 10px;" size="small" type="success" @click="resumeUpload">繼續</el-button>
  <el-button style="margin-left: 10px;" size="small" type="success" @click="stopUplosd">暫停</el-button>
  <el-button style="margin-left: 10px;" size="small" type="success" @click="abortMultipartUpload">清除切片</el-button>
 </el-upload>
 <el-progress :percentage="percentage" :status="uploadStatus"></el-progress>
 </div>
</template>

<script>
 let OSS = require('ali-oss') // 引入ali-oss插件
 const client = new OSS({
 region: 'oss-cn-shanghai',//根據那你的Bucket地點來填寫
 accessKeyId: 'LTA*********RaXY',//自己賬戶的accessKeyId
 accessKeySecret: 'uu1************GiS',//自己賬戶的accessKeySecret
 bucket: 'a******o',//bucket名字
 });
export default {
 data () {
 return {
  fileList:[],
  file: null,
  tempCheckpoint: null, // 用來緩存當前切片內容
  uploadId: '',
  uploadStatus: null, // 進度條上傳狀態
  percentage: 0, // 進度條百分比
  uploadName: '', //Object所在Bucket的完整路徑
 }
 },
 mounted() {
 // window.addEventListener('online', this.resumeUpload);
 },
 methods: {
 // 點擊上傳至服務器
 submitForm(file) {
  this.multipartUpload();
 },
 // 取消分片上傳事件
 async abortMultipartUpload() {
  window.removeEventListener('online', this.resumeUpload)
  const name = this.uploadName; // Object所在Bucket的完整路徑。
  const uploadId = this.upload; // 分片上傳uploadId。
  const result = await client.abortMultipartUpload(name, uploadId);
  console.log(result, '=======清除切片====');
 },
 // 暫停分片上傳。
 stopUplosd () {
  window.removeEventListener('online', this.resumeUpload) // 暫停時清除時間監聽
  let result = client.cancel();
  console.log( result, '---------暫停上傳-----------')
 },
 // 切片上傳
 async multipartUpload () {
  if (!this.file) {
  this.$message.error('請選擇文件')
  return
  }
  this.uploadStatus = null
  // console.log("this.uploadStatus",this.file, this.uploadStatus);

  this.percentage = 0
  try {
  //object-name可以自定義為文件名（例如file.txt）或目錄（例如abc/test/file.txt）的形式，實現將文件上傳至當前Bucket或Bucket下的指定目錄。
  let result = await client.multipartUpload(this.file.name, this.file, {
   headers: {
   'Content-Disposition': 'inline',
   'Content-Type': this.file.type //註意：根據圖片或者文件的後綴來設置，我試驗用的‘.png'的圖片，具體為什麼下文解釋
   },
   progress: (p, checkpoint) => {
   this.tempCheckpoint = checkpoint;
   this.upload = checkpoint.uploadId
   this.uploadName = checkpoint.name
   this.percentage = p * 100
   // console.log(p, checkpoint, this.percentage, '---------uploadId-----------')
   // 斷點記錄點。瀏覽器重啟後無法直接繼續上傳，您需要手動觸發上傳操作。
   },
   meta: { year: 2020, people: 'dev' },
   mime: this.file.type
  });
  console.log(result, this.percentage, 'result= 切片上傳完畢=');
  } catch (e) {
  window.addEventListener('online', this.resumeUpload) // 該監聽放在斷網的異常處理
  // 捕獲超時異常。
  if (e.code === 'ConnectionTimeoutError') { // 請求超時異常處理
   this.uploadStatus = 'exception'
   console.log("TimeoutError");
   // do ConnectionTimeoutError operation
  }
  // console.log(e)
  }
 },
 // 恢復上傳。
 async resumeUpload () {
  window.removeEventListener('online', this.resumeUpload)
  if (!this.tempCheckpoint) {
  this.$message.error('請先上傳')
  return
  }
  this.uploadStatus = null
  try {
  let result = await client.multipartUpload(this.file.name, this.file, {
   headers: {
   'Content-Disposition': 'inline',
   'Content-Type': this.file.type //註意：根據圖片或者文件的後綴來設置，我試驗用的‘.png'的圖片，具體為什麼下文解釋
   },

   progress: (p, checkpoint) => {
   this.percentage = p * 100
   console.log(p, checkpoint, 'checkpoint----恢復上傳的切片信息-------')
   this.tempCheckpoint = checkpoint;
   },
   checkpoint: this.tempCheckpoint,
   meta: { year: 2020, people: 'dev' },
   mime: this.file.type
  })
  console.log(result, 'result-=-=-恢復上傳完畢')
  } catch (e) {
  console.log(e, 'e-=-=-');
  }
 },

 // 選擇文件發生改變
 handleChange(file, fileList) {
  this.fileList = fileList.filter(row => row.uid == file.uid)
  this.file = file.raw
  // 文件改變時上傳
  // this.submitForm(file)
 },
 handleRemove(file, fileList) {
  this.percentage = 0 //進度條置空
  this.fileList = []
 },
 }
}
</script>

<style scoped>
</style>

 const client = new OSS({
 region: 'oss-cn-shanghai',//根據那你的Bucket地點來填寫
 accessKeyId: 'LT******XY',//自己賬戶的accessKeyId
 accessKeySecret: 'uu*********GiS',//自己賬戶的accessKeySecret
 bucket: 'a******io',//bucket名字
 });

headers: {
   'Content-Disposition': 'inline',
   'Content-Type': this.file.type //註意：根據圖片或者文件的後綴來設置，我取得是文件的type，具體為什麼下文解釋
   },