转换Excel到高分辨率图像

随着高分辨率屏幕的普及，以默认96 DPI生成的图像往往显得模糊不清。为了确保在高分辨率屏幕上的清晰度，必须以更高的DPI生成图像。Aspose.Cells提供设置 ImageOrPrintOptions.HorizontalResolution 和 ImageOrPrintOptions.VerticalResolution 的功能，从而可以从Excel文件创建在高分辨率显示器上清晰锐利的高质量图像。

// For complete examples and data files, please go to https://github.com/aspose-cells/Aspose.Cells-for-Java

// Load the Excel file
Workbook workbook = new Workbook("input.xlsx");

// Create an instance of ImageOrPrintOptions
ImageOrPrintOptions options = new ImageOrPrintOptions();
// Set horizontal and vertical resolution to 300 DPI
options.setHorizontalResolution(300);
options.setVerticalResolution(300);
// Set the image type
options.setImageType(ImageType.PNG);

// Get the worksheet
Worksheet sheet = workbook.getWorksheets().get(0);

// Create a SheetRender instance
SheetRender render = new SheetRender(sheet, options);

// Generate and save the image
render.toImage(0, "output.png");