NPOI图像大小调整

HSSFWorkbook workbook = new HSSFWorkbook();
HSSFSheet sheet = (HSSFSheet)workbook.CreateSheet("Sheet1");

// 加载图像文件
byte[] imageBytes = File.ReadAllBytes("image.jpg");
int pictureIndex = workbook.AddPicture(imageBytes, PictureType.JPEG);

// 创建绘图对象
HSSFPatriarch patriarch = (HSSFPatriarch)sheet.CreateDrawingPatriarch();
HSSFClientAnchor anchor = new HSSFClientAnchor(0, 0, 0, 0, 0, 0, 1, 1);
HSSFPicture picture = (HSSFPicture)patriarch.CreatePicture(anchor, pictureIndex);

// 设置图像大小
picture.Resize(100, 200);

// 保存Excel文件
using (FileStream fs = new FileStream("output.xls", FileMode.Create))
{
    workbook.Write(fs);
}

XWPFDocument document = new XWPFDocument();
XWPFParagraph paragraph = document.CreateParagraph();

// 加载图像文件
byte[] imageBytes = File.ReadAllBytes("image.jpg");
int pictureType = XWPFDocument.PICTURE_TYPE_JPEG;
int pictureIndex = document.AddPicture(imageBytes, pictureType);

// 创建图像对象
XWPFRun run = paragraph.CreateRun();
CT_Drawing drawing = run.GetCTR().AddNewDrawing();
CT_Inline inline = drawing.AddNewInline();

// 设置图像大小
CT_PositiveSize2D extent = inline.AddNewExtent();
extent.cx = 100 * 9525;
extent.cy = 200 * 9525;

// 设置图像引用
CT_GraphicalObjectData graphicData = inline.AddNewGraphic().AddNewGraphicData();
graphicData.Uri = "http://schemas.openxmlformats.org/drawingml/2006/picture";

CT_Picture picture = graphicData.AddNewPic().AddNewBlipFill().AddNewBlip();
picture.Embed = document.AllPictures[pictureIndex].GetPackageRelationship().Id;

// 保存Word文件
using (FileStream fs = new FileStream("output.docx", FileMode.Create))
{
    document.Write(fs);
}