异常信息：
jxl.read.biff.BiffException: Unable to recognize OLE stream
at jxl.read.biff.CompoundFile.<init>(CompoundFile.java:116)
at jxl.read.biff.File.<init>(File.java:127)
at jxl.Workbook.getWorkbook(Workbook.java:268)
at jxl.Workbook.getWorkbook(Workbook.java:253)
at test1.main(test1.java:25)
解决方法：原因：不支出读取 excel 2007 文件(*.xlsx)。只支持 excel 2003 (*.xls)。
