#鸿蒙学习大百科#调用fs.write报错如下，如何解决？

let applicationContext = this.context.getApplicationContext();
let cacheDir = applicationContext.cacheDir;
let filePath = cacheDir + "/test1.txt"
fs.open(filePath, fs.OpenMode.READ_WRITE | fs.OpenMode.CREATE).then((file: fs.File) => {
 //fs.OpenMode.READ_WRITE 注意这句不能丢
   write("aaa",file)
})

async function write(data: string, file: fs.File): Promise<void> {
  fs.write(file.fd, data).then((writeLen: number) => {
    console.info('write data length is: ' + writeLen)
  }).catch((err: BusinessError) => {
    console.error(`Failed to write data. Code is ${err.code}, message is ${err.message}`);
  })
}