electronDl.download(window, url, options?): Promise<DownloadItem> 返回的 DownloadItem 是什么
时间: 2024-02-19 09:00:36 浏览: 17
在 `electron-dl` 模块中,`electronDl.download` 方法返回一个 `Promise` 对象。当下载完成时,这个 `Promise` 对象会被解析为一个 `DownloadItem` 对象。`DownloadItem` 对象代表了一个正在进行的下载任务,它包含了下载文件的各种信息,比如文件大小、保存路径、下载进度等。
下面是一个示例代码,展示如何使用 `DownloadItem` 对象获取下载任务的信息:
```javascript
const { download } = require('electron-dl');
download(BrowserWindow.getFocusedWindow(), 'https://example.com/file.zip', {
directory: '/path/to/save/directory'
}).then(downloadItem => {
console.log(`Downloaded file name: ${downloadItem.getFilename()}`);
console.log(`Downloaded file size: ${downloadItem.getTotalBytes()}`);
console.log(`Downloaded file path: ${downloadItem.getSavePath()}`);
downloadItem.on('updated', (event, state) => {
console.log(`Download progress: ${state.percent}`);
});
downloadItem.on('done', (event, state) => {
console.log(`Download state: ${state}`);
});
});
```
在上面的代码中,我们使用 `download` 方法创建一个下载任务,并在 `Promise` 对象被解析后获取了 `DownloadItem` 对象。然后,我们使用 `getFilename()`、`getTotalBytes()` 和 `getSavePath()` 方法获取了下载文件的文件名、文件大小和保存路径。此外,我们还为 `DownloadItem` 对象绑定了 `updated` 和 `done` 事件的处理函数,用于监控下载进度和下载完成状态。
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