请参阅以下使用aspose.cells for java完成任务的示例代码，以供参考：
例如
示例代码：

// Open an Excel file
Workbook workbook = new Workbook("Book1.xlsx");

// Retrieve a list of all custom document properties of the Excel file
CustomDocumentPropertyCollection customProperties = workbook.getWorksheets().getCustomDocumentProperties();

// Adding a custom document property to the Excel file
DocumentProperty publisher = customProperties.add("Publisher", "Aspose");

// Save the file
workbook.save("out1.xlsx", SaveFormat.XLSX);

另外，我在aspose担任支持开发者/传道者。