使用POI3.5時，爲能兼容Excel2007而發生的異常

Workbook book = null;
        try {
            book = new XSSFWorkbook(excelFile);
        } catch (Exception ex) {
            book = new HSSFWorkbook(new FileInputStream(excelFile));
        }

 

感謝：http://www.blogjava.net/spinage/archive/2011/03/16/346409.html