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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大得多的高度。

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，它水平拉伸图像的问题。

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4 回答 4

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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/examples/ss/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);
于 2016-01-20T19:21:47.987 回答
3

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

于 2013-08-07T14:51:34.780 回答
1

我有同样的问题，我的解决方案是在我的项目 AddDimensionedImage中复制这个类，然后使用这个方法。

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);
于 2018-03-28T16:45:00.877 回答
0

我创建了另一个宽度取自 的空图像，在其sheet.getColumnWidthInPixels上绘制必要的图像并用于AddDimensionedImage.EXPAND_ROW_AND_COLUMN将其完全适合单元格：

    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);

我必须将AddDimensionedImage.java复制到我的类路径并重载addImageToSheet以接受字节数组。

在此之前，我尝试了此处提到的其他选项，但没有帮助。希望我的回答对某人有用。

于 2018-02-01T13:15:00.863 回答