解析Excel中的图片
public class importExcelByImg {
public static void main(String[] args) {
try {
String filePath = "C:\\Users\\86182\\Desktop\\12312.xlsx";
FileInputStream file = new FileInputStream(filePath);
//建议使用WorkbookFactory.create方法创建Workbook对象，兼容性更好
Workbook workbook = WorkbookFactory.create(file);
File outputDir = new File("E:/images");
if (!outputDir.exists()) {
outputDir.mkdirs();
}
for (PictureData pictureData : workbook.getAllPictures()) {
String uuid = UUID.randomUUID().toString();
String fileExtension;
if (pictureData instanceof HSSFPictureData) {
// 处理 HSSF 图片数据（Excel 2003及更早版本）
// HSSFPictureData hssfPictureData = (HSSFPictureData) pictureData;
// byte[] pictureBytes = hssfPictureData.getData();
// 处理图片数据，例如保存到文件或进行其他操作
HSSFPictureData hssfPictureData = (HSSFPictureData) pictureData;
fileExtension = hssfPictureData.suggestFileExtension();
savePictureDataToFile(outputDir, uuid, fileExtension, hssfPictureData.getData());
} else if (pictureData instanceof XSSFPictureData) {
// 处理 XSSF 图片数据（Excel 2007及更新版本）
// XSSFPictureData xssfPictureData = (XSSFPictureData) pictureData;
// byte[] pictureBytes = xssfPictureData.getData();
// 处理图片数据，例如保存到文件或进行其他操作
XSSFPictureData xssfPictureData = (XSSFPictureData) pictureData;
fileExtension = xssfPictureData.suggestFileExtension();
savePictureDataToFile(outputDir, uuid, fileExtension, xssfPictureData.getData());
}
}
workbook.close();
file.close();
} catch (IOException | InvalidFormatException e) {
e.printStackTrace();
}
}
/**
* 自己根据系统修改
* @param outputDir 保存图片的目录
* @param fileName 保存图片的文件名
* @param fileExtension 保存图片的扩展名
* @param pictureData 图片数据
*/
private static void savePictureDataToFile(File outputDir, String fileName, String fileExtension, byte[] pictureData) {
try (FileOutputStream fileOutputStream = new FileOutputStream(new File(outputDir, fileName + "." + fileExtension))) {
fileOutputStream.write(pictureData);
} catch (IOException e) {
e.printStackTrace();
}
}
导出图片到Excel中
File file = new File(Constants.filePath + imgprefix + imgsuffix);
//画图的顶级管理器，一个sheet只能获取一个（一定要注意这点）
//这里是模板文件所以用XSSFDrawing
XSSFDrawing patriarch = (XSSFDrawing) sheet.createDrawingPatriarch();
BufferedImage bufferImg = null;
ByteArrayOutputStream byteArrayOut = new ByteArrayOutputStream();
bufferImg = ImageIO.read(file);
String type = imgsuffix.substring(imgsuffix.lastIndexOf(".") + 1);
ImageIO.write(bufferImg, type, byteArrayOut);
//anchor主要用于设置图片的属性
/**
* dx1 第一个单元格中x轴的偏移量
* dy1 第一个单元格中y轴的偏移量
* dx2 第二个单元格中x轴的偏移量
* dy2 第二个单元格中y轴的偏移量
* col1 第一个单元格的列号
* row1 第一个单元格的行号
* col2 第二个单元格的列号
* row2 第二个单元格的行号
*/
XSSFClientAnchor anchor = new XSSFClientAnchor(0, 0, 0, 0, (short) 8, 3, (short) 10, 9);
patriarch.createPicture(anchor, workbook.addPicture(byteArrayOut.toByteArray(), "jpg".equals(type) ? XSSFWorkbook.PICTURE_TYPE_JPEG : XSSFWorkbook.PICTURE_TYPE_PNG));