public CheckResultMessage checkSheetFormat() {
		if(hWorkbook == null && xWorkbook == null){
			return error("读取报表"+fileName+"失败");
		}
		if (checkVersion(file).equals("2003")) {
			for (String sheetName : sheetNames) {
				hSheet = hWorkbook.getSheet(sheetName);
				if (hSheet == null) {
					return error(reportName + " 缺少Sheet " + sheetName);
				}
			}
		} else {
			for (String sheetName : sheetNames) {
				xSheet = xWorkbook.getSheet(sheetName);
				if (xSheet == null) {
					return error(reportName + " 缺少Sheet " + sheetName);
				}
			}
		}

		return pass(reportName + " <" + fileName + "> Sheet格式校验正确");
	}