将Excel文件转换为兼容PDF/A 1a的PDF格式,使用JavaScript通过C++
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可能的使用场景
PDF/A是针对长期保存的文件而设计的PDF特殊版本,是ISO标准化的可携带文档格式(PDF)的一种归档格式,嵌入了文档中使用的所有字体。PDF/A与普通PDF的区别在于,禁止某些功能,如字体链接(而非字体嵌入)和加密。Aspose.Cells for Java脚本通过C++支持将Excel文件保存为PDF/A合规的PDF(支持PDF/A-1a、PDF/A-1b、PDF/A-2a、PDF/A-2b、PDF/A-2u、PDF/A-3a、PDF/A-2ab和PDF/A-3u)。此话题介绍了如何将Excel工作簿保存为符合PDF/A标准(PDF/A-1a)的PDF文件。
将Excel文件转换为与PDF/A-1a兼容的PDF格式
开发者可以使用PdfSaveOptions类设置转换的不同属性。设置PdfSaveOptions类的不同属性,可以控制输出PDF的打印、字体、安全性和压缩设置。最重要的属性是PdfSaveOptions.compliance,它允许你将Excel文件保存为符合PDF/A标准的PDF文件。
以下示例代码说明如何将Excel文件转换为兼容PDF/A-1a的PDF格式。请参考其输出PDF及截图。
屏幕截图

示例代码
<!DOCTYPE html>
<html>
<head>
<title>Aspose.Cells Example</title>
</head>
<body>
<h1>Export to PDF (PDFA-1a) 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, 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 () => {
// Create workbook object
const wb = new Workbook();
// Access first worksheet
const ws = wb.worksheets.get(0);
// Access cell B5 and add some message inside it
const cell = ws.cells.get("B5");
cell.value = "This PDF format is compatible with PDFA-1a.";
// Create pdf save options and set its compliance to PDFA-1a
const opts = new AsposeCells.PdfSaveOptions();
opts.compliance = AsposeCells.PdfCompliance.PdfA1a;
// Save the output pdf
const outputData = wb.save(SaveFormat.Pdf, opts);
const blob = new Blob([outputData], { type: "application/pdf" });
const downloadLink = document.getElementById('downloadLink');
downloadLink.href = URL.createObjectURL(blob);
downloadLink.download = 'outputCompliancePdfA1a.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 file.</p>';
});
</script>
</html>