HarmonyOS 鸿蒙Next中request.downloadFile的url兼容处理

你的url中含有特殊字符空格，在调用downloadFile前需要转义一下，调试如下代码会走on(‘complete’）逻辑

let url2 = "https://xxxx"

let encodedUrl = encodeURI(url2);

try {
  request.downloadFile(getContext(), { url: encodedUrl }).then((data: request.DownloadTask) => {
    let downloadTask: request.DownloadTask = data;

    let completeCallback = () => {
      console.info('Download task completed.');
    };

    downloadTask.on('complete', completeCallback);

    let failCallback = () => {
      console.info('Download task fail.');
    };

    downloadTask.on('fail', failCallback);
  }).catch((err: BusinessError) => {
    console.error(`Failed to request the download. Code: ${err.code}, message: ${err.message}`);
  })
} catch (err) {
  console.error(`Failed to request the download. err: ${JSON.stringify(err)}`);
}