使用Apache POI从excel文件获取图像及其位置
可以使用Apache POI从xls电子表格中提取图像的信息吗?
Is it possible to extract an image's information from an xls spreadsheet using Apache POI?
在我的一个项目中,我需要从.xls中读取一些图像文件。我可以一起阅读所有图像,但是如何获取图像的位置(如列和行数或坐标)?否则,我可以获得图像的位置,但我不能知道关于在找到的位置的特定图像的信息,如图片名称或扩展名或其他。我如何获得图像和位置?
In one of my projects, I need to read some images from a .xls file. I can read all images together, but how can I get images position (like columns and rows number or coordinates)? Otherwise I can get images position but I can't know information, like picture name or extension or others, about a specific image at the positions found. How I can get images and positions too?
看看这里:
http://poi.apache.org/spreadsheet/quick-guide.html#Images
示例:
List lst = workbook.getAllPictures();
for (Iterator it = lst.iterator(); it.hasNext(); ) {
PictureData pict = (PictureData)it.next();
String ext = pict.suggestFileExtension();
byte[] data = pict.getData();
if (ext.equals("jpeg")) {
FileOutputStream out = new FileOutputStream("pict.jpg");
out.write(data);
out.close();
}
}
此后,您可以使用工具像ImageInfo,它扩展了Magick,找出各种配置。哟甚至可以将图像转换成不同的大小。
After this, you can use tools like ImageInfo which extends Magick to find out various configs. Yo can even convert images to different sizes.
还要看看这个课程:
http://blog.jaimon.co.uk/simpleimageinfo/SimpleImageInfo.java.html
- 希望这有助于