每个 Excel 工作表渲染一个 PDF 页面 使用 C++ 通过 JavaScript 转换 Excel 为 PDF
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当处理大型 Microsoft Excel 文件（例如，包含许多工作表，每个有50列和300行以上数据的工作簿）时，你可能希望每个工作表显示一页 PDF，无论工作表的大小。这意味着每页的尺寸可能会有很大差异。这可以通过 C++ Aspose.Cells for JavaScript 实现。
请查看以下示例代码，将多个工作表的Excel文件转换为PDF。
<!DOCTYPE html>
<html>
<head>
<title>Aspose.Cells Example - Excel to PDF</title>
</head>
<body>
<h1>Convert Excel to PDF (One Page Per Worksheet)</h1>
<input type="file" id="fileInput" accept=".xls,.xlsx" />
<button id="runExample">Convert to PDF</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, PdfSaveOptions } = 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();
// Initialize a new Workbook by opening the selected Excel file
const workbook = new Workbook(new Uint8Array(arrayBuffer));
// Implement one page per worksheet option
const pdfSaveOptions = new PdfSaveOptions();
pdfSaveOptions.onePagePerSheet = true;
// Save the PDF file (returns binary data)
const outputData = workbook.save(SaveFormat.Pdf, pdfSaveOptions);
const blob = new Blob([outputData], { type: 'application/pdf' });
const downloadLink = document.getElementById('downloadLink');
downloadLink.href = URL.createObjectURL(blob);
downloadLink.download = 'OutputFile.out.pdf';
downloadLink.style.display = 'block';
downloadLink.textContent = 'Download PDF File';
document.getElementById('result').innerHTML = '<p style="color: green;">PDF generated successfully! Click the download link to get the PDF file.</p>';
});
</script>
</html>
如果设置了 PdfSaveOptions.onePagePerSheet 选项为true，所有工作表内容将渲染到一页 PDF 中。
如果你的电子表格包含公式，最好在渲染为 PDF 之前调用 Workbook.calculateFormula()。这确保依赖公式的值被重新计算，PDF 中显示正确的值。