百度查了也没明白怎么去掉

<ul class="fileList">
<li v-for="(file, fileIndex) in infoData.files" :key="fileIndex" :class="{ iszip: /\.(zip|rar|7z)$/.test(file.name) }" @click="downLoad(file)">
  <a class="down-load-link">{{ file.name }}</a>
  <a class="down-load-size">{{ file.ext.size | fileSize }}</a>
</li>
</ul>
          
async downLoad(item) {
  console.log(item)
  const path = await this.download(item)
  window.location.href = path
},
      
async download(item) {
      console.log('downLoad--------------------------')
      console.log(item)
      // 检查是否已有 Oss Client
      let client = checkOssClient()
      if (client === null) {
        try {
          if (identity !== 'teacher') {
            const res = await stuOSSToken({ token: hasToken })
            if (res.respCode === '0000') {
              const credentials = res.respResult.Credentials
              client = initOssClient(credentials)
            }
          } else {
            const res = await teaOSSToken({ token: hasToken })
            if (res.respCode === '0000') {
              const credentials = res.respResult.Credentials
              client = initOssClient(credentials)
            }
          }
        } catch (error) {
          this.$message.error(`${error}`)
          return
        }
      }
      const url = item.url
      console.log(url)
      const response = {
        'content-disposition': `attachment; filename=${encodeURIComponent(item.name)}`
      }
      let link
      try {
        const res = await client.signatureUrl(url, { response })
        link = res
      } catch (error) {
        this.$message.error(`${error}`)
      }
      return link
    },