Workbook wb = new Workbook("C:/手风琴式折叠图.xls");
Thank you for sharing the sample.
We have evaluated the presented scenario while using the latest version of Aspose.Cells for Java 22.214.171.124, and we are able to notice the said problem. In order to further investigate the matter, we have logged this incident as CELLSJAVA-41860 in our bug tracking system. Please allow us some time to properly analyze this case and revert back with updates in this regard.
Thanks for using Aspose.Cells.
If you open the template file and generated file in Excel 97-2003, the shadow effect is same. The chart must be created by MS Excel 2007 or above version. We do not support advance shadow effect setting in xls file since ME Excel 2007 and the feature could not be supported soon. Please simply save it as xlsx file now.
Please download and try the following fix and let us know your feedback.
The issues you have found earlier (filed as CELLSJAVA-41860) have been fixed in Aspose.Cells for Java 18.6. Please also see the document for your reference: Installation|Documentation