使用Apache poi將數據寫入Word文檔？

Question

我正在實現AES算法128位密鑰。加密後，加密數據的前16個字節將存儲在.docx文件中。之後，.docx文件將被阻止。

XWPFDocument document = new XWPFDocument() ; 
FileOutputStream out = new FileOutputStream(filename,true);//filename is .docx word document 
XWPFParagraph paragraph = document.createParagraph(); 
XWPFRun run = paragraph.createRun(); 
run.setText(ress1);//ress1 is a String datatype 
document.write(out); 

Answer 1

根據我的理解你的評論，你想加密你的word文件。你可以使用下面的代碼片段實現：

POIFSFileSystem fs = new POIFSFileSystem(); 
EncryptionInfo info = new EncryptionInfo(fs, EncryptionMode.agile); 

Encryptor enc = info.getEncryptor(); 
enc.confirmPassword(<your_password>); 


OPCPackage opc = OPCPackage.open(new File(<file_path>), PackageAccess.READ_WRITE); //opening package for encryption 
OutputStream os = enc.getDataStream(fs); //perform encryption 
opc.save(os); //save package 
opc.close(); 

FileOutputStream fos = new FileOutputStream("file_path"); 
fs.writeFilesystem(fos); //write the file back to file system 
fos.close();