根据上传的excel文件url，进行文件查询

HttpResponse response = HttpUtil.createGet(fileUrl)
        .setConnectionTimeout(20000)
        .setReadTimeout(120000)
        .timeout(3600000)
        .execute();
InputStream inputStream = response.bodyStream();
boolean xls = ExcelFileUtil.isXls(inputStream);
boolean xlsx = ExcelFileUtil.isXlsx(inputStream);
if(!xls&&!xlsx){
    return R.failed("不是Excel文件!");
}

MultipartFile multipartFile = getMultipartFile(inputStream, "read.xlsx");
try {
    InputStream inputStreamOther = multipartFile.getInputStream();
    //使用hutool的类，内部其实还是调用WorkbookFactory.create方法，只不过多了个关闭流的操作
    Workbook workbook = WorkbookUtil.createBook(inputStreamOther);
    Sheet sheet = workbook.getSheetAt(0);
    //获得当前sheet的开始行
    int firstRowNum = sheet.getFirstRowNum();
    Row row = sheet.getRow(firstRowNum);
    String s;
    for (int i = 0; i < ODPS_CZRKXXSJB_IMPORT.length; i++) {
        s = row.getCell(i).getStringCellValue();
        if (StrUtil.isBlank(s)) {
            return R.failed("警告！模板为空或有误！");
        }
        if (!ODPS_CZRKXXSJB_IMPORT[i].equals(s)) {
            return R.failed("警告！模板为空或有误！第 " + (i + 1) + " 列名错误");
        }
    }
} catch (IOException e) {
    e.printStackTrace();
}

/**
 * 获取封装得MultipartFile
 *
 * @param inputStream inputStream
 * @param fileName    fileName
 * @return MultipartFile
 */
public MultipartFile getMultipartFile(InputStream inputStream, String fileName) {
    FileItem fileItem = createFileItem(inputStream, fileName);
    //CommonsMultipartFile是feign对multipartFile的封装，但是要FileItem类对象
    return new CommonsMultipartFile(fileItem);
}


/**
 * FileItem类对象创建
 *
 * @param inputStream inputStream
 * @param fileName    fileName
 * @return FileItem
 */
public FileItem createFileItem(InputStream inputStream, String fileName) {
    FileItemFactory factory = new DiskFileItemFactory(16, null);
    String textFieldName = "file";
    FileItem item = factory.createItem(textFieldName, MediaType.MULTIPART_FORM_DATA_VALUE, true, fileName);
    int bytesRead = 0;
    byte[] buffer = new byte[8192];
    OutputStream os = null;
    //使用输出流输出输入流的字节
    try {
        os = item.getOutputStream();
        while ((bytesRead = inputStream.read(buffer, 0, 8192)) != -1) {
            os.write(buffer, 0, bytesRead);
        }
        inputStream.close();
    } catch (IOException e) {
        log.error("Stream copy exception", e);
        throw new IllegalArgumentException("文件上传失败");
    } finally {
        if (os != null) {
            try {
                os.close();
            } catch (IOException e) {
                log.error("Stream close exception", e);

            }
        }
        if (inputStream != null) {
            try {
                inputStream.close();
            } catch (IOException e) {
                log.error("Stream close exception", e);
            }
        }
    }

    return item;
}