我一直在尝试为 Chrome 构建一个插件，它将把页面上的所有文件下载到一个与桌面上的文件同名的文件夹中。目前，没有任何反应。
我有这些文件：
但是，我现在得到的是弹出按钮出现，但没有发生下载。我在系统日志上看不到任何内容，并且有点不知道该去哪里查看。
这实际上是备份计划 - 我想从网页下载特定文件，但我不知道该怎么做，我研究发现这更容易，所以我想我应该先尝试了解它是如何工作的，然后尝试具体一个。
{
"manifest_version": 2,
"name": "Download Scraper",
"version": "1.0",
"permissions": ["activeTab", "downloads", "storage"],
"background": {
"scripts": ["background.js"],
"persistent": false
},
"browser_action":{
"default_icon": "icon.png",
"default_popup": "popup.html"
},
"content_scripts": [
{
"matches": ["<all_urls>"],
"js": ["content.js"],
"run_at": "document_idle"
}
]
}
<!DOCTYPE html>
<html>
<head>
<title>File Downloader</title>
<script src="popup.js"></script>
</head>
<body>
<button id="downloadButton">Download File</button>
</body>
</html>
document.getElementById('downloadButton').addEventListener('click', function () {
chrome.tabs.query({ active: true, currentWindow: true }, function (tabs) {
var tab = tabs[0];
chrome.tabs.sendMessage(tab.id, { action: 'downloadFile' });
});
});
chrome.runtime.onMessage.addListener(function (message, sender, sendResponse) {
if (message.action === 'downloadAllFiles') {
// Find all links on the page
var fileLinks = document.querySelectorAll('a');
// Loop through each link and trigger a download
fileLinks.forEach(function (link) {
// Get the href attribute of the link (download URL)
var downloadUrl = link.href;
// Extract the file name from the href
var fileName = getFileNameFromUrl(downloadUrl);
// Send file information to the background script
chrome.runtime.sendMessage({ action: 'initiateDownload', fileName: fileName, fileUrl: downloadUrl });
});
}
});
// Function to extract file name from a URL
function getFileNameFromUrl(url) {
var matches = url.match(/\/([^\/?#]+)[^\/]*$/);
return matches && matches.length > 1 ? decodeURIComponent(matches[1]) : null;
}
chrome.runtime.onMessage.addListener((message, sender, sendResponse) => {
if (message.action === 'initiateDownload') {
const fileName = message.fileName;
const folderName = fileName.replace(/[^\w\s]/gi, ''); // Remove special characters from the title
console.log('Folder Name:', folderName);
const filePath = `Desktop/${folderName}/${fileName}.pdf`;
chrome.downloads.download({
url: message.fileUrl,
filename: filePath
}, () => {
console.log('File downloaded and saved.');
});
}
});