poi HSSFWorkbook 导出极简模式

	String[] headers = head.toArray(new String[head.size()]);
	HSSFWorkbook workbook = new HSSFWorkbook();
	HSSFSheet sheet = workbook.createSheet("xx");
	sheet.setDefaultColumnWidth(33);
	sheet.setDefaultRowHeightInPoints(20);
	HSSFRow row = sheet.createRow(0);
	ExcelUtils.creatHeader(row, headers);
	int rowNum = 1
	for (List info : data) {
		HSSFRow dataRow = sheet.createRow(rowNum);
		for(int j= 0; j