java 使用poi读取excel内浮动图片

注意：仅读取到xls中的浮动图片，嵌入图片此方法读取不到

1、引入poi依赖

  <dependency><groupId>org.apache.poi</groupId><artifactId>poi</artifactId><version>3.17</version></dependency><dependency><groupId>org.apache.poi</groupId><artifactId>poi-ooxml</artifactId><version>3.17</version></dependency>

2、代码测试

import org.apache.commons.io.FileUtils;
import org.apache.poi.hssf.usermodel.*;
import org.apache.poi.ss.usermodel.*;
import org.apache.poi.xssf.usermodel.*;import java.io.File;
import java.io.FileInputStream;
import java.util.*;public class TestReadFile {public static void main(String[] args) throws Exception {File file = new File("D:\\upload\\file.xls");//File file = new File("C:\\Users\\Administrator\\Desktop\\excel\\测试.xlsx");readXls(file);}/*** 读取xls* 	@PostMapping("/test")public R<String> test(@RequestParam("file") MultipartFile file) throws Exception {HSSFWorkbook book1 = new HSSFWorkbook(file.getInputStream());*/public static void readXls(File file) throws Exception {HSSFWorkbook book1 = new HSSFWorkbook(new FileInputStream(file));//方式2 获取sheet数量，直接遍历读取每个工作表数据for (Sheet sheet : book1) {HSSFSheet hssSheet = (HSSFSheet) sheet;//获取工作表中绘图包HSSFPatriarch drawingPatriarch = hssSheet.getDrawingPatriarch();if (drawingPatriarch != null) {//获取所有图像形状List<HSSFShape> shapes = drawingPatriarch.getChildren();if (shapes != null) {//遍历所有形状for (HSSFShape shape : shapes) {//获取形状在工作表中的顶点位置信息（anchor锚点）HSSFClientAnchor anchor = (HSSFClientAnchor) shape.getAnchor();if (shape instanceof HSSFPicture) {//形状获取对应的图片数据HSSFPicture pic = (HSSFPicture) shape;HSSFPictureData picData = pic.getPictureData();//图片形状在工作表中的位置, 所在行列起点和终点位置short c1 = anchor.getCol1();int r1 = anchor.getRow1();String key = r1 + "行," + c1 + "列";//TODO 此处可以将图片位置和数据存入缓存中，以便解析表格数据进行对应操作及保存//保存图片到本地byte[] data = picData.getData();//文件扩展名String suffix = picData.suggestFileExtension();File dir = new File("D:\\upload\\resources\\images\\");if (!dir.exists()) {dir.mkdirs();}FileUtils.writeByteArrayToFile(new File(dir.getPath() + "/" + key + UUID.randomUUID() + "." + suffix), data);}}}}}}/*** 读取xlsx*/public static void readXlsx(File file) throws Exception {XSSFWorkbook book = new XSSFWorkbook(new FileInputStream(file));//方式2 获取sheet数量，直接遍历读取每个工作表数据for (Sheet sheet : book) {XSSFSheet xssSheet = (XSSFSheet) sheet;//获取工作表中绘图包XSSFDrawing drawing = xssSheet.getDrawingPatriarch();if (drawing != null) {//获取所有图像形状List<XSSFShape> shapes = drawing.getShapes();if (shapes != null) {//遍历所有形状for (XSSFShape shape : shapes) {//获取形状在工作表中的顶点位置信息（anchor锚点）XSSFClientAnchor anchor = (XSSFClientAnchor) shape.getAnchor();if (shape instanceof XSSFPicture) {//形状获取对应的图片数据XSSFPicture pic = (XSSFPicture) shape;XSSFPictureData picData = pic.getPictureData();//图片形状在工作表中的位置, 所在行列起点和终点位置short c1 = anchor.getCol1();int r1 = anchor.getRow1();String key = r1 + "行," + c1 + "列";//TODO 此处可以将图片位置和数据存入缓存中，以便解析表格数据进行对应操作及保存//保存图片到本地byte[] data = picData.getData();//文件扩展名String suffix = picData.suggestFileExtension();File dir = new File("D:\\upload\\resources\\images\\");if (!dir.exists()) {dir.mkdirs();}FileUtils.writeByteArrayToFile(new File(dir.getPath() + "/" + key + UUID.randomUUID() + "." + suffix), data);}}}}}}
}