java poi判断excel是xlsx还是xls类型

<dependency>
    <groupId>org.apache.poi</groupId>
    <artifactId>poi-ooxml</artifactId>
    <version>5.2.5</version>
</dependency>

package com.test.excel;
 
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
 
import java.io.File;
import java.nio.file.Files;
 
public class ExcelRateOneTest {
 
    public static void main(String[] args) {
        File file = new File("D:\\年轻干部人才库名册.xls");
        try {
            Workbook workbook = null;
            try {
                workbook = new XSSFWorkbook(Files.newInputStream(file.toPath()));
            } catch (Exception e) {
                System.out.println("该excel文件不是xlsx类型"+e.getMessage());
            }
            try {
                if (null == workbook) {
                    workbook = new HSSFWorkbook(Files.newInputStream(file.toPath()));
                }
            } catch (Exception e) {
                System.out.println("该文件不是excel文件"+e.getMessage());
            }
            if (workbook != null) {
                Sheet sheet = workbook.getSheetAt(0);
                Row row = sheet.getRow(0);
                Cell cell = row.getCell(0);
                System.out.println("单元格内容：" + getCellValue(cell));
            }
        }catch (Exception e){
            System.out.println(e.getMessage());
        }
    }
 
    /**
     * 根据单元格类型获取单元格内容，将内容转为字符串类型
     * @param cell 单元格
     * @return
     */
    public static String getCellValue(Cell cell) {
        if (cell == null) {
            return "";
        }
        switch (cell.getCellType()) {
            case STRING:
                return cell.getStringCellValue();
            case NUMERIC:
                return cell.getNumericCellValue() + "";
            case BOOLEAN:
                return cell.getBooleanCellValue() + "";
            case FORMULA:
                return cell.getCellFormula() + "";
            default:
                return "";
        }
    }
}

//这个方法对cell进行处理，传入cell对象，返回cell中内容，String类型。
public static String getCellFormatValue(Cell cell) {
		String cellValue = "";
		if (cell != null) {
			// 判断cell类型
			switch (cell.getCellType()) {
			case Cell.CELL_TYPE_NUMERIC: {
				cellValue = String.valueOf(cell.getNumericCellValue());
				break;
			}
			case Cell.CELL_TYPE_STRING: {
				cellValue = cell.getRichStringCellValue().getString();
				break;
			}
			default:
				cellValue = "";
			}
		}
		return cellValue;
	}

InputStream inputStream = new FileInputStream("绝对路径.xls");
		HSSFWorkbook workbook = new HSSFWorkbook(inputStream);
		HSSFSheet s = workbook.getSheetAt(0);
		for (int j = 0; j < s.getPhysicalNumberOfRows(); j++) {//获取总行数
			Row row = s.getRow(j); // 取出第i行 getRow(index) 获取第(j)行
			for (int k = 0; k < row.getPhysicalNumberOfCells(); k++) { // getPhysicalNumberOfCells() 获取当前行的总列数
				String value1 = getCellFormatValue(row.getCell(k));//取出第j行第k列的值
				System.out.println(value1);
			}
		}
		workbook.close();

InputStream inputStream = new FileInputStream("绝对路径.xlsx");
		XSSFWorkbook workbook = new XSSFWorkbook(inputStream);
		XSSFSheet s = workbook.getSheetAt(0);
		for (int j = 0; j < s.getPhysicalNumberOfRows(); j++) {//获取总行数
			Row row = s.getRow(j); // 取出第i行 getRow(index) 获取第(j)行
			for (int k = 0; k < row.getPhysicalNumberOfCells(); k++) { // getPhysicalNumberOfCells() 获取当前行的总列数
				String value1 = getCellFormatValue(row.getCell(k));//取出第j行第k列的值
				System.out.println(value1);
			}
		}
		workbook.close();