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electron DownloadItem如何从指定Url中下载文件
要使用electron的DownloadItem来从指定的URL中下载文件,可以按照以下步骤进行操作: 1. 在主进程中使用session对象创建一个下载会话。例如: - const electron = require('electron');
- const { session } = electron;
- const download = require('electron-dl');
- download({
- url: 'http://example.com/file.pdf',
- directory: '~/downloads'
- });
复制代码 2. 在渲染进程中,你可以使用electron-dl模块,结合electron.remote模块获取下载进度和事件。例如:
- const electron = require('electron');
- const { ipcRenderer, remote } = electron;
- const fs = require('fs');
- const downloadItem = remote.getCurrentWebContents().session.availableDownloads[0];
- downloadItem.on('updated', (event, state) => {
- if (state === 'interrupted') {
- console.log('Download is interrupted but can be resumed');
- } else if (state === 'progressing') {
- if (downloadItem.isPaused()) {
- console.log('Download is paused');
- } else {
- console.log(`Received bytes: ${downloadItem.getReceivedBytes()}`);
- }
- }
- });
- downloadItem.on('done', (event, state) => {
- if (state === 'completed') {
- const filePath = downloadItem.getSavePath();
- console.log(`Download is complete, file saved to: ${filePath}`);
- } else {
- console.log('Download failed or was canceled');
- }
- });
复制代码这里的electron-dl模块是一个封装库,可以帮助你在electron中更方便地进行文件下载操作。你可以通过npm install electron-dl进行安装。 注意,上面的代码只是演示了基本的下载操作,你可以根据自己的需求进行扩展和定制。
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