使用C++的Aspose.Cells for JavaScript检查修改密码
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有时，您需要通过程序检查提供的密码是否与“修改密码”匹配。Aspose.Cells 提供了
WorkbookSettings.writeProtection.validatePassword() 方法，可以用来验证密码是否正确。
在Microsoft Excel中检查修改密码
您可以在创建Microsoft Excel工作簿时指定打开密码和修改密码。请参阅此截图，显示Microsoft Excel提供的界面以指定这些密码。
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使用C++的Aspose.Cells for JavaScript检查修改密码
以下示例加载了 源Excel文件，其中设置了打开密码为 1234，修改密码为 5678。代码首先验证 567 是否是正确的修改密码，返回 false，然后验证 5678，返回 true。
<!DOCTYPE html>
<html>
<head>
<title>Aspose.Cells Example</title>
</head>
<body>
<h1>Check Write Protection Passwords</h1>
<input type="file" id="fileInput" accept=".xls,.xlsx,.csv" />
<button id="runExample">Run Example</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, LoadOptions, SaveFormat, 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();
// Specify password to open inside the load options
const opts = new LoadOptions();
opts.password = "1234";
// Open the source Excel file with load options
const workbook = new Workbook(new Uint8Array(arrayBuffer), opts);
// Check if 567 is Password to modify
let ret = workbook.settings.writeProtection.validatePassword("567");
let outputHtml = `<p>Is 567 correct Password to modify: ${ret}</p>`;
// Check if 5678 is Password to modify
ret = workbook.settings.writeProtection.validatePassword("5678");
outputHtml += `<p>Is 5678 correct Password to modify: ${ret}</p>`;
document.getElementById('result').innerHTML = outputHtml;
});
</script>
</html>
控制台输出
Is 567 correct Password to modify: False
Is 5678 correct Password to modify: True