Command format: Demo [-unicode] [-csv] [-hide] excelfile

出现错误

Command format:  Demo [-unicode] [-csv] [-hide] excelfile

                 Demo -xml [-format]  excelfile

                 Demo -readwrite|-rw excelfile output

                 Demo -biffdump | -bd | -wa | -write | -formulas | -features | -escher | -escherdg excelfile

                 Demo -ps excelfile [property] [output]

                 Demo -version | -logtest | -h | -help