我正在研究java,我有一个名为“file.xlsx”的excel文件,我想使用Spire.XLS将其转换为pdf,这是我为此编写的代码:
//Create a Workbook instance
workbook = new Workbook();
//Load an Excel file
workbook.loadFromFile("file.xlsx");
//Get the first worksheet
sheet = workbook.getWorksheets().get(0);
//Add a new worksheet to the workbook
sheet_copy = workbook.getWorksheets().add("Copy of sheet1");
//Copy the first worksheet to the new worksheet
sheet_copy.copyFrom(sheet);
//Save the result file
workbook.saveToFile("file.xlsx");
workbook.saveToFile("result.pdf", com.spire.xls.FileFormat.PDF);
生成了 pdf 文件,但带有签名:评估警告:该文档是使用 Spire.XLS for Java 创建的,我想知道如何删除它,知道吗?