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;
}

这是我用来将零件文件转换为字节并以 BLOB 格式保存到数据库的代码。但是一旦代码完全执行，就不会将任何内容保存到数据库中，并且它显示 null。有人可以建议可能的故障吗？

输出的图像

Answer 1

您的输出未关闭。数据仍在需要刷新的缓存中。