使用 C++ 通过 JavaScript 保护和解除保护工作表

在 MS Excel 中保护和取消保护工作表

保护和取消保护工作表

  1. 点击 审阅 > 保护工作表。
  2. 在 密码框 中输入密码。
  3. 选择 允许 选项。
  4. 选择 确定，重新输入密码以确认，然后再次选择 确定。

** 使用 C++ 通过 Aspose.Cells for JavaScript 保护工作表**

只需要以下简单代码行来实现保护 Excel 文件的工作簿结构。

<!DOCTYPE html>
<html>
    <head>
        <title>Aspose.Cells Example</title>
    </head>
    <body>
        <h1>Aspose.Cells Protect Worksheet Example</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, SaveFormat, ProtectionType } = 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 () => {
            // Create a new file (workbook)
            const workbook = new Workbook();

            // Gets the first worksheet.
            const sheet = workbook.worksheets.get(0);

            // Protect contents of the worksheet.
            sheet.protect(ProtectionType.Contents);

            // Protect worksheet with password.
            sheet.protection.password = "test";

            // Save as Excel file and provide download link
            const outputData = workbook.save(SaveFormat.Xlsx);
            const blob = new Blob([outputData]);
            const downloadLink = document.getElementById('downloadLink');
            downloadLink.href = URL.createObjectURL(blob);
            downloadLink.download = 'Book1.xlsx';
            downloadLink.style.display = 'block';
            downloadLink.textContent = 'Download Excel File';

            document.getElementById('result').innerHTML = '<p style="color: green;">Worksheet protected and file is ready. Click the download link to get the file.</p>';
        });
    </script>
</html>

** 使用 C++ 通过 Aspose.Cells for JavaScript 解除保护工作表**

使用Aspose.Cells API轻松取消保护工作表。如果工作表被密码保护，则需要提供正确的密码。

<!DOCTYPE html>
<html>
    <head>
        <title>Aspose.Cells Unprotect Worksheet Example</title>
    </head>
    <body>
        <h1>Unprotect Worksheet Example</h1>
        <input type="file" id="fileInput" accept=".xls,.xlsx,.csv" />
        <button id="runExample">Unprotect Worksheet</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, 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();

            // Instantiate Workbook from uploaded file
            const workbook = new Workbook(new Uint8Array(arrayBuffer));

            // Access the first worksheet
            const sheet = workbook.worksheets.get(0);

            // Unprotect contents of the worksheet using password
            sheet.unprotect("password");

            // Save the modified workbook to XLSX format and provide download link
            const outputData = workbook.save(SaveFormat.Xlsx);
            const blob = new Blob([outputData]);
            const downloadLink = document.getElementById('downloadLink');
            downloadLink.href = URL.createObjectURL(blob);
            downloadLink.download = 'Book1.unprotected.xlsx';
            downloadLink.style.display = 'block';
            downloadLink.textContent = 'Download Unprotected Excel File';

            document.getElementById('result').innerHTML = '<p style="color: green;">Worksheet unprotected successfully! Click the download link to get the modified file.</p>';
        });
    </script>
</html>

高级主题

用 JavaScript 通过 C++ 设置或取消共享工作簿的密码保护 用 JavaScript 通过 C++ 加密 Excel 文件