将图片添加到Excel单元格时，Apache POI-HSSF会使图像大小失真

Question

我正在使用Apache poi-hssf将图片添加到单元格中。该图像是120x100，但无论我做什么，如何调整它的大小，Excel电子表格总是显示它跨越多行，并将其扭曲为比宽度大得多的高度。

InputStream is = new FileInputStream(getImageURL());
byte[] bytes = IOUtils.toByteArray(is);
int pictureIdx = wb.addPicture(bytes, Workbook.PICTURE_TYPE_JPEG);
is.close();

//add a picture shape
CreationHelper helper = wb.getCreationHelper();
ClientAnchor anchor = helper.createClientAnchor();
// Create the drawing patriarch.  This is the top level container for all shapes.
Drawing drawing = sheet1.createDrawingPatriarch();
//set top-left corner of the picture,
//subsequent call of Picture#resize() will operate relative to it

anchor.setAnchorType(0);
anchor.setCol1(1);
anchor.setRow1(1);

Picture pict = drawing.createPicture(anchor, pictureIdx);

//auto-size picture relative to its top-left corner
pict.resize();

我试过所有dx/dy坐标和col/row。位置无关紧要，它的问题是水平拉伸图像。

Answer 1

我一直面临着类似的问题，我添加的图像被扭曲了。我尝试了pict.resize（）和sheet.autoSizeColumn（），但都不起作用。最后，我找到了下面的URL：https://svn.apache.org/repos/asf/poi/trunk/src/examples/src/org/apache/poi/examples/ss/addDimenoneDimage.java

我将上面的类添加到代码中，并使用它的方法将图像添加到Excel中。我能够添加几乎没有失真的图像。希望这对你也有帮助。我写了下面的代码：-

BufferedImage imageIO = ImageIO.read(new URL(image));
int height= imageIO.getHeight();
int width=imageIO.getWidth();
int relativeHeight=(int)(((double)height/width)*28.5);
new AddDimensionedImage().addImageToSheet(2,  sheet.getPhysicalNumberOfRows()-1 , sheet, sheet.createDrawingPatriarch(),new URL(image), 30, relativeHeight, AddDimensionedImage.EXPAND_ROW);