使用Apache POI獲取Excel工作簿密碼

Question

我正在嘗試讀取Excel數據表，我能夠獲取數據並使用HSSFWorkbook讀取數據。一切正常，我能夠獲取數據。

我已經為工作簿設置了密碼，在excel Protect Workbook表Protect Workbook手動將其設置為“ ABCXYZ”，並且在打開excel文件時會詢問我該密碼，並且只有在密碼正確后，它才允許我寫入或讀取excel文件。

我的問題是如何在Java程序中獲取此密碼“ ABCXYZ”。

HSSFWorkbook wb = new HSSFWorkbook(inputStream);
wb.isWriteProtected();--> This returns false.

Answer 1

據我所知，您可以使用：

（在Excel 2003中）

POIFSFileSystem pfs = new POIFSFileSystem(new FileInputStream("yourexcelfile.xls")); 
Biff8EncryptionKey.setCurrentUserPassword("ABCXYZ"); 
HSSFWorkbook wb = new HSSFWorkbook(pfs);

（在Excel 2007中）

POIFSFileSystem pfs = newPOIFSFileSystem(POIDataSamples.getPOIFSInstance().openResourceAsStream("yourexcelfile.xlsx")); 
EncryptionInfo encInfo = new EncryptionInfo(pfs); 
Decryptor decryptor = new Decryptor(encInfo); 
decryptor.verifyPassword("ABCXYZ"); 
XSSFWorkbook wb = new XSSFWorkbook(decryptor.getDataStream(pfs));

希望能幫助到你！

Answer 2

    try {           

        FileInputStream fileInput = new FileInputStream("sample.xls");         
        BufferedInputStream bufferInput = new BufferedInputStream(fileInput);            
        POIFSFileSystem poiFileSystem = new POIFSFileSystem(bufferInput);            

        Biff8EncryptionKey.setCurrentUserPassword("password");            
        HSSFWorkbook workbook = new HSSFWorkbook(poiFileSystem, true);            
        HSSFSheet sheet = workbook.getSheetAt(0);           

        HSSFRow row = sheet.createRow(0);
        Cell cell = row.createCell(0);

        cell.setCellValue("Hello World"); 

        FileOutputStream fileOut = new FileOutputStream(fname);
        workbook.writeProtectWorkbook(Biff8EncryptionKey.getCurrentUserPassword(), "");
        workbook.write(fileOut);



    } catch (Exception ex) {



    }