零件文件未保存到数据库中

Question

public String addFile(UploadFileBean uploadFileBean) throws Exception {
SessionFactory sessionFactory = HibernateUtility.createSessionFactory();
    Session session = null;
    session = sessionFactory.openSession();
    session.beginTransaction();
    UploadFileEntity uploadFileEntity = new UploadFileEntity();

    InputStream input = uploadFileBean.getFileData().getInputStream();
    ByteArrayOutputStream output = new ByteArrayOutputStream();
    byte[] buffer = new byte[10240];
    for (int length = 0; (length = input.read(buffer)) > 0;)
        output.write(buffer, 0, length);

    uploadFileEntity.setUploaderId(uploadFileBean.getUploaderId());
    uploadFileEntity.setReviewerId(uploadFileBean.getReviewerId());
    uploadFileEntity.setFileData(output.toByteArray());
    uploadFileEntity.setFileName(uploadFileBean.getFileName());
    uploadFileEntity.setFileStatus("Pending");

    session.persist(uploadFileEntity);
    session.getTransaction().commit();
    session.close();

    return null;
}

这是我用来将部分文件转换为字节并以BLOB格式将其保存到数据库的代码。但是一旦代码完全执行，没有任何东西被保存到数据库中，它显示为null。有人可以建议可能的错误吗？

Image of the output

Answer 1

您的输出未关闭。数据仍在缓存中，需要刷新。