poi拿文件

public void testReadByPoi() throws IOException{
//创建对象
    Workbook wb = new XSSFWorkbook("test.xlsx");
//调用get方法
    Sheet sheet = wb.getSheetAt(0);
    Row row = sheet.getRow(1);
    Cell cell = row.getCell(2);
//都是get
    double numericCellValue = cell.getNumericCellValue();
//注意get的数据类型  不匹配就拿不到
    System.out.println(numericCellValue);
    wb.close();

}