在加载工作簿时使用JavaScript通过C++过滤VBA项目
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用JavaScript通过C++在加载Excel工作簿时过滤VBA项目
一些 .xlsm/.xslb 文件具有大量宏（或非常长的宏）。通过C++的Aspose.Cells for JavaScript在打开此类工作簿时会无条件加载这些（元）数据。你可能需要通过LoadDataFilterOptions控制这一点，当你实际上只需要提取大量工作簿的工作表名称时，从而跳过此类无用内容。该筛选器通过引入一个新选项LoadDataFilterOptions.VBA提供。
示例代码
以下示例代码加载工作簿，仅过滤 VBA。可以从以下链接下载用于测试此功能的示例文件：
sampleMacroEnabledWorkbook.xlsm
<!DOCTYPE html>
<html>
<head>
<title>Aspose.Cells Example</title>
</head>
<body>
<h1>Sample Macro-Enabled Workbook to XLSM</h1>
<input type="file" id="fileInput" accept=".xls,.xlsx,.xlsm,.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, LoadOptions, LoadFormat, LoadFilter, LoadDataFilterOptions } = 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 macro-enabled (.xlsm) file.</p>';
return;
}
const file = fileInput.files[0];
const arrayBuffer = await file.arrayBuffer();
// Set the load options, we do not want to load VBA
const loadOptions = new LoadOptions(LoadFormat.Auto);
const loadFilter = new LoadFilter(LoadDataFilterOptions.All & ~LoadDataFilterOptions.VBA);
loadOptions.loadFilter = loadFilter;
// Create workbook object from uploaded file using load options
const book = new Workbook(new Uint8Array(arrayBuffer), loadOptions);
// Save the output in xlsm format
const outputData = book.save(SaveFormat.Xlsm);
const blob = new Blob([outputData]);
const downloadLink = document.getElementById('downloadLink');
downloadLink.href = URL.createObjectURL(blob);
downloadLink.download = 'OutputSampleMacroEnabledWorkbook.xlsm';
downloadLink.style.display = 'block';
downloadLink.textContent = 'Download OutputSampleMacroEnabledWorkbook.xlsm';
document.getElementById('result').innerHTML = '<p style="color: green;">Processing completed. Click the download link to get the modified file.</p>';
});
</script>
</html>