使用Node.js在C++中提取工作表中的图片
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Microsoft Excel用户可以在电子表格中添加图片。利用Aspose.Cells for Node.js via C++，可以读取Microsoft Excel文件中的图片并保存到本地驱动器。本文展示了具体操作方法。
下面的示例代码显示了如何从 Excel 文件中提取图像并保存。
const path = require("path");
const AsposeCells = require("aspose.cells.node");
// Source directory
const sourceDir = path.join(__dirname, "data");
// Output directory
const outputDir = path.join(__dirname, "output");
// Open a template Excel file
const workbook = new AsposeCells.Workbook(path.join(sourceDir, "sampleExtractImagesFromWorksheets.xlsx"));
// Get the first worksheet
const worksheet = workbook.getWorksheets().get(0);
// Get the first Picture in the first worksheet
const pic = worksheet.getPictures().get(0);
// Set the output image file path
const picformat = pic.getImageType().toString();
// Note: you may evaluate the image format before specifying the image path
// Define ImageOrPrintOptions
const printoption = new AsposeCells.ImageOrPrintOptions();
// Specify the image format
printoption.setImageType(AsposeCells.ImageType.Jpeg);
// Save the image
pic.toImage(path.join(outputDir, "outputExtractImagesFromWorksheets.jpg"), printoption);