通过 C++ 及 JavaScript 验证加密文件的密码
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如果Excel（xlsx、xlsb、xls、xlsm）和Open Office（ODS）文件被密码锁定，Aspose支持简单的密码验证，无需解析文件的具体数据。
验证加密文件的密码
为验证加密文件密码，C++ 通过 Aspose.Cells for JavaScript 提供 FileFormatUtil.verifyPassword(Uint8Array, string) 方法。此方法接受两个参数，文件流和需要验证的密码
以下代码片段演示了使用FileFormatUtil.verifyPassword(Uint8Array, string)方法来验证提供的密码是否有效。
<!DOCTYPE html>
<html>
<head>
<title>Aspose.Cells Example</title>
</head>
<body>
<h1>Verify Excel Password Example</h1>
<input type="file" id="fileInput" accept=".xls,.xlsx,.csv" />
<button id="runExample">Verify Password</button>
<a id="downloadLink" style="display: none;">Download Result</a>
<div id="result"></div>
</body>
<script src="aspose.cells.js.min.js"></script>
<script type="text/javascript">
const { Workbook, SaveFormat, FileFormatUtil, Utils } = AsposeCells;
AsposeCells.onReady({
license: "/lic/aspose.cells.enc",
fontPath: "/fonts/",
fontList: [
"arial.ttf",
"NotoSansSC-Regular.ttf"
]
}).then(() => {
console.log("Aspose.Cells initialized");
});
document.getElementById('runExample').addEventListener('click', async () => {
const fileInput = document.getElementById('fileInput');
if (!fileInput.files.length) {
document.getElementById('result').innerHTML = '<p style="color: red;">Please select an Excel file.</p>';
return;
}
const file = fileInput.files[0];
const arrayBuffer = await file.arrayBuffer();
const bytes = new Uint8Array(arrayBuffer);
const isPasswordValid = FileFormatUtil.verifyPassword(bytes, "1234");
document.getElementById('result').innerHTML = '<p>Password is Valid: ' + isPasswordValid + '</p>';
});
</script>
</html>