Question

我正在使用Apache POI-HSSF将图片添加到单元格中。图像是120x100，但无论我做什么以及如何调整它，Excel电子表格总是显示它跨越多行并将其扭曲到比宽度更大的高度。

如何保持原始尺寸？

我的代码：

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();

我已经尝试了所有dx / dy坐标和Col / Row。位置无关紧要，它是水平拉伸图像的问题。感谢

Answer 1

我一直面临类似的问题，我添加的图像变形了。我尝试过pict.resize（）和sheet.autoSizeColumn（），但它没有用。最后我找到了以下网址： - https://svn.apache.org/repos/asf/poi/trunk/src/examples/src/org/apache/poi/ss/examples/AddDimensionedImage.java

我将上面的类添加到我的代码中并使用它的方法将图像添加到excel中。我能够添加少量失真的图像。希望这对你也有帮助。我在下面写了代码： -

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);

Answer 2

据我从Apache POI的文档中了解，这是因为pict.resize(); 正如here所述，如果更改了工作簿的默认字体大小，则图片可能会垂直或水平拉伸。

Answer 3

我遇到了同样的问题，我的解决方案是在我的项目中复制这个类 AddDimensionedImage然后使用此方法。

protected void addImageInCell(Sheet sheet, URL url, Drawing<?> drawing, int colNumber, int rowNumber) {
    BufferedImage imageIO = ImageIO.read(url);
    int height = imageIO.getHeight();
    int width = imageIO.getWidth();
    int relativeHeight = (int) (((double) height / width) * 28.5);
    new AddDimensionedImage().addImageToSheet(colNumber, rowNumber, sheet, drawing, url, 30, relativeHeight,
            AddDimensionedImage.EXPAND_ROW_AND_COLUMN);

}

您可以使用以下行调用此方法：

URL url = new URL("https://blog.expedia.mx/por-que-los-viajeros-internacionales-visitan-mexico/");
addImageInCell(sheet, url, sheet.createDrawingPatriarch(), 0, 0);

Answer 4

我创建了另一个空图像，其宽度取自AddDimensionedImage.EXPAND_ROW_AND_COLUMN，在其上绘制必要的图像并使用HSSFRow imageRow = sheet.createRow(row); BufferedImage image = ImageIO.read(Paths.get(pathToImage).toUri().toURL()); AddDimensionedImage addImage = new AddDimensionedImage(); float columnWidth = sheet.getColumnWidthInPixels(0); BufferedImage off_Image = new BufferedImage((int) columnWidth, actualImageHeight, BufferedImage.TYPE_INT_RGB); Graphics2D g2 = off_Image.createGraphics(); g2.setColor(new Color(192,192,192)); g2.fillRect(0, 0, off_Image.getWidth(), off_Image.getHeight()); g2.drawImage(image, 0, 0, null); g2.dispose(); ByteArrayOutputStream baos = new ByteArrayOutputStream(); ImageIO.write(off_Image, "jpg", baos); byte[] bytes = baos.toByteArray(); double reqImageWidthMM = ((double) off_Image.getWidth()) / ConvertImageUnits.PIXELS_PER_MILLIMETRES; double reqImageHeightMM = ((double) off_Image.getHeight()) / ConvertImageUnits.PIXELS_PER_MILLIMETRES; addImage.addImageToSheet("A1", sheet, bytes, reqImageWidthMM, reqImageHeightMM, AddDimensionedImage.EXPAND_ROW_AND_COLUMN);将其精确地放入单元格中：

addImageToSheet

我不得不将AddDimensionedImage.java复制到我的类路径并重载mylist.erase(i);以接受字节数组。

在此之前我尝试了其他选项，但没有帮助。希望我的回答对某人有用。

将图片添加到Excel单元格时，Apache POI-HSSF会扭曲图像大小

4 个答案: