java 上传读取 excel

	implementation group: 'org.apache.poi', name: 'poi', version: '5.2.2'
	implementation group: 'org.apache.poi', name: 'poi-ooxml', version: '5.2.2'

 // excel导入

 @CrossOrigin
 @PostMapping(value = "/batch_sms_send/parseExcel", produces = {"application/json;charset=UTF-8"})

 public void parseExcel(@RequestParam("file") MultipartFile file,HttpServletRequest request, HttpServletResponse response) {

	try {

                // @RequestParam("file") MultipartFile file 是用来接收前端传递过来的文件
                // 1.创建workbook对象，读取整个文档

		InputStream inputStream = file.getInputStream();

		POIFSFileSystem poifsFileSystem = new POIFSFileSystem(inputStream);

		HSSFWorkbook wb = new HSSFWorkbook(poifsFileSystem);

		// 2.读取页脚sheet

		HSSFSheet sheetAt = wb.getSheetAt(0);

		// 3.循环读取某一行

		for (Row row : sheetAt) {

		    //先将第二列手机号转换为string格式

        	    row.getCell(1).setCellType(Cell.CELL_TYPE_STRING);

        	    // 4.读取每一行的单元格

       		    String stringCellValue="";

        	    String stringCellValue2="";

        	    if(row.getCell(0)!=null && row.getCell(1)!=null){

            	        stringCellValue = row.getCell(0).getStringCellValue(); // 第一列数据

            	        stringCellValue2 = row.getCell(1).getStringCellValue();// 第二列

        		// 写多少个具体看大家上传的文件有多少列.....

        		// 测试是否读取到数据,及数据的正确性

        		System.out.println(stringCellValue);

       	 		System.out.println(stringCellValue2);
                     }
		}




	} catch (Exception e) {

		// TODO Auto-generated catch block

		e.printStackTrace();

	}

}