java读取excel图片导入代码示例(亲测有效)
目录
- 从excel文件中获取图片(兼容新老版本)
- 从sheet页中获取图片及图片位置
- main方法-获取excel文件中的图片下载到本地
- 总结
从excel文件中获取图片(兼容新老版本)
/** * 获取excel表中的图片 * * @return * @throws IOException * @throws InvalidFormatException * @throws EncryptedDocumentException * @Param fis 文件输入流 * @Param sheetNum Excel表中的sheet编号 */ public static Map<String, PictureData> getPictureFromExcel(File file, int sheetNum) throws EncryptedDocumentException, IOException { //获取图片PictureData集合 String fileName = file.getName(); Workbook workbook = null; if (StringUtil.isEmpty(fileName)) { return null; } FileInputStream fileInputStream = new FileInputStream(file); if (fileName.endsWith("xls")) { //2003 workbook = new HSSFWorkbook(fileInputStream); HSSFSheet sheet = (HSSFSheet) workbook.getSheetAt(sheetNum - 1); Map<String, PictureData> pictures = getPicturesHyeduU(sheet); return pictures; js } else if (fileName.endsWith("xlsx")) { //2007 workbook = new XSSFWorkbook(fileInputStream); XSSFSheet sheet = (XSSFSheet) workbook.getSheetAt(sheetNum - 1); Map<String, PictureData> pictures = getPictures(sheet); return pictures; } return new HashMap(); }
从sheet页中获取图片及图片位置
/** * 获取图片和位置 (xls版) * @param sheet * @return * @throws IOException */ public static Map<String, PictureData> getPictures (HSSFSheet sheet) throws IOException { Map<String, PictureData> map = new HashMap<String, PictureData>(); List<HSSFShape> list = sheet.getDrawingPatriarch().getChildren(); for (HSSFShape shape : list) { if (shape instanceof HSSFPicture) { HSSFPicture picture = (HSSFPicture) shape; HSSFClientAnchor cAnchor = picture.getClientAnchor(); PictureData pdata = picture.getPictureData(http://www.devze.com); String key = cAnchor.getRow1() + "-" + cAnchor.getCol1(); // 行号-列号 map.put(key, pdata); } } return map; } /** * 获取图片和位置 (xlsx版) * @param sheet * @return * @throws IOException */ public static Map<String, PictureData> getPictures (XSSFSheet sheet) throws IOException { Map<String, PictureData> map = new HashMap<String, PictureData>(); List<POIXMLDocumentPart> list = sheet.getRelations(); for (POIXMLDocumentPart part : list) { if (part instanceof XSSFDrawing) { XSSFDrawing drawing = (XSSFDrawing) part; List<XSSFShape> shapes = drawing.getShapes(); for (XSSFShape shape : shapes) { XSSFPicture picture = (XSSFPicture) shape; XSSFClientAnchor anchor = picture.getPreferredSize(); CTMarker marker = anchor.getFrom(); String key = marker.getRow() + "-" + marker.getCol(); mHyeduUap.put(key, picture.getPictureData()); } } } return map; }
main方法-获取excel文件中的图片下载到本地
public static void main(String [] args) throws IOException { File file = new File("C:\\Users\\A\\Desktop\\test.xlsx"); //获取图片数据 Map<String, PictureData> map = getPictureFromExcel(file, 1); //根据图片行列位置获取图片 PictureData picData = (PictureData)map.get("3"+"-"+14); //后缀名 String extension = picData.suggestFileExtension(); byte[] data = picData.getData(); FileOutputStream out = new FileOutputStream("C:\\Users\\A\\Desktop\\" + "picture." + extension); out.write(data); out.close(); }
遇到问题:图片导入解析报错异常Java.lang.ClassCastException: org.apache.poi.xssf.usermodel.
XSSFSimpleShape cannot be cast to org.apache.poi.xssf.usermodel.XSSFPicture问题解决方法:经过排查,为xslx版本shap对象强转为图片对象报错,添加逻辑首先检验if (shape instanceof XSSFPicture)类型然后HyeduU再进行强转,问题解决
总结
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