Password Protect XSSFWorkBook Apache POI

Question

I need to password protect XSSFWorkBook. For HSSF, I am able to do it easily but the same implementation is not working for XSSFWorkBook.

I am using Apache POI 3.6 and 3.9 both. I mean I tried using both 3.6 and 3.9.

I guess I need to use POIFSFileSystem but can anyone guide me for the same.

Answer 1

Password Protect is supported by latest version of poi.

Please see http://poi.apache.org/encryption.html

Have tried the suggested method and it is working fine.

Answer 2

Base on Apache POI - Encryption support doc.

It is depend on file system, that mean MS-Office 2003 or MS-Office 2007, etc..

The following program work in MS-Office 2007. Please, check the documentation

POIFSFileSystem filesystem = --> get your filesystem
EncryptionInfo encInfo = new EncryptionInfo(filesystem); 
Decryptor decryptor = new Decryptor(encInfo); 
decryptor.verifyPassword("your-password"); 
XSSFWorkbook wb = new XSSFWorkbook(decryptor.getDataStream(filesystem))

Answer 3

Using Apache POI we can read the password protected files, but their is no option to create the password protected files.

So try some other commercial library like Aspose.