PROSAGA码农传奇-springboot-如何使用openssl与spring boot / mySql和dropzone js

<div class =“post-text”itemprop =“text”>
  <P>
    我发现它只是需要的问题将文件的内容作为字节数组返回。加密类
  </p>
  <P>
    改变类FileController：
  </p>
   <pre>
    <code>
      @RequestMapping(value ="/uploadLobCrypt",method = RequestMethod.POST)

public ResponseEntity <String> fileCrypt(MultipartFile multiPartFile,MultipartHttpServletRequest request) throws IOException, InvalidKeyException, NoSuchAlgorithmException, NoSuchPaddingException, IllegalBlockSizeException, BadPaddingException, InvalidKeySpecException  {

fileLobService.fileCrypt(multiPartFile, request);

return new ResponseEntity<String>("{}", HttpStatus.OK);     
}

</code>
  </pre>
  <P>
    类FileLobService
  </p>
   <pre>
    <code>
      public void fileCrypt(MultipartFile 
multiPartFile,MultipartHttpServletRequest 
request) throws IOException, InvalidKeyException, NoSuchAlgorithmException, 
NoSuchPaddingException,IllegalBlockSizeException, 
BadPaddingException,InvalidKeySpecException {

// ecriture clee public et public dans un path
    String publicKeyPath = "C:\\OpenSSL-Win64\\bin\\public.der";
    //String privateKeyPath = "C:\\OpenSSL-Win64\\bin\\private.pk8";

Iterator<String> itr = request.getFileNames();

String uploadedFile = itr.next();
    MultipartFile file = request.getFile(uploadedFile);

String mimeType = file.getContentType();
    String filename = file.getOriginalFilename();
    byte[] bytes = file.getBytes();
    Long size = file.getSize();

Cryptage cryptage = new Cryptage();
    byte[] encryptedBytes = cryptage.encryptFile(bytes, publicKeyPath);

FileUpload fileUploaded = new FileUpload(filename, encryptedBytes, mimeType,size);

fileUploadRepository.saveAndFlush(fileUploaded);

}

</code>
  </pre>
  <P>
    注意：它对于大文件的小文件很有用，我们必须使用SHA-256消息摘要算法或更多
  </p>
</DIV>