HarmonyOS 鸿蒙Next 文件下载 request.agent.create

一直报错 file operation error 13400001  如何解决

//创建目录
const pdfDir = getContext().filesDir + '/downloadPdf’
let isExistFile = fs.accessSync(pdfDir)
if (!isExistFile) {
  fs.mkdirSync(pdfDir)
}
const fileName = 'No2.pdf’
const filePath = pdfDir + ‘/’ + fileName
//fileIo.openSync(filePath, fileIo.OpenMode.CREATE | fileIo.OpenMode.READ_WRITE)
request.agent.create(getContext(), {
  url: ‘https://h5static.kuwo.cn/www/kw-www/NetworkCultureBusinessLicense20242541122.pdf’,
  action: request.agent.Action.DOWNLOAD, 
  overwrite: true, 
  gauge: true, 
  saveas: filePath 
}, (error: BusinessError, task: request.agent.Task) => {
  console.log(‘callback’);
  if (error) {
    //error  file operation error    13400001
    console.log(‘error’, error.message, error.code)
    return
  }

  this.taskid = task.tid
  task.on(‘progress’, (progress: request.agent.Progress) => {
    this.downloadProgress = Math.ceil(progress.processed * 100 / progress.sizes[0])
  })
  task.on(‘completed’, () => {
    this.downloadProgress = 100
    promptAction.showToast({
      message: ‘文件下载完毕’
    })
  })
  task.on(‘failed’, (progress: request.agent.Progress) => {
    console.info(‘upload task failed.’);
  })
})