Java POI读取excel 支持xls、xlsx

import java.io.File;
import java.io.FileInputStream;
import java.util.List;
 
import org.apache.poi.hssf.usermodel.HSSFPicture;
import org.apache.poi.hssf.usermodel.HSSFPictureData;
import org.apache.poi.hssf.usermodel.HSSFShape;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.DateUtil;
import org.apache.poi.ss.usermodel.Row;
 
public final class TestImportExcel {
 
    public static void main(String[] args) throws Exception  {
 
        File excelFile = new File("test.xls");
        HSSFWorkbook wb = new HSSFWorkbook(new FileInputStream(excelFile));
        HSSFSheet sheet = wb.getSheetAt(0);
 
        for (Row row : sheet) {
            for (Cell cell : row) {
                switch (cell.getCellType()) {
                case Cell.CELL_TYPE_STRING:
                    System.out.print(cell.getRichStringCellValue().getString());
                    break;
                case Cell.CELL_TYPE_NUMERIC:
                    if (DateUtil.isCellDateFormatted(cell)) {
                        System.out.print(String.valueOf(cell.getDateCellValue()));
                    } else {
                        System.out.print(cell.getNumericCellValue());
                    }
                    break;
                case Cell.CELL_TYPE_BOOLEAN:
                    System.out.print(cell.getBooleanCellValue());
                    break;
                default:
                }
            }
            System.out.println();
        }
         
        //读取图片
        List<HSSFPictureData> pictures = wb.getAllPictures();  
        for (HSSFShape shape : sheet.getDrawingPatriarch().getChildren()) {  
            if (shape instanceof HSSFPicture) {
                HSSFPicture pic = (HSSFPicture) shape;  
                int pictureIndex = pic.getPictureIndex()-1;  
                HSSFPictureData picData = pictures.get(pictureIndex);
                System.out.println("image-size:" + picData.getData().length);
            }  
        }  
         
        System.out.println(wb.getSheetName(0));
    }
}