JCIFS 报错transport closed in negotiate

问题遇到的现象和发生背景

下载NAS存储文件，一直保错transport closed in negotiate

用代码块功能插入代码，请勿粘贴截图

public static void smbGet(String shareUrl, String localDirectory) throws Exception {
        NtlmPasswordAuthentication auth = new NtlmPasswordAuthentication(USER_DOMAIN, USER_ACCOUNT,
                USER_PWS);
        SmbFile remoteFile = new SmbFile(shareUrl, auth);
        if (!remoteFile.exists()) {
            System.out.println("共享文件不存在");
            return;
        }
        // 有文件的时候再初始化输入输出流
        InputStream in = null;
        OutputStream out = null;
        System.out.println("下载共享目录的文件 shareUrl 到 localDirectory");
        try {
            String fileName = remoteFile.getName();
            File localFile = new File(localDirectory + File.separator + fileName);
            File fileParent = localFile.getParentFile();
            if (null != fileParent && !fileParent.exists()) {
                fileParent.mkdirs();
            }
            in = new BufferedInputStream(new SmbFileInputStream(remoteFile));
            out = new BufferedOutputStream(new FileOutputStream(localFile));
            byte[] buffer = new byte[1024];
            while (in.read(buffer) != -1) {
                out.write(buffer);
                buffer = new byte[1024];
            }
            out.flush(); //刷新缓冲区输出流

        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            out.close();
            in.close();
        }
    }

运行结果及报错内容

jcifs.smb.SmbException: Failed to connect: 0.0.0.0<00>/172.21.140.132
jcifs.util.transport.TransportException
java.io.IOException: transport closed in negotiate
at jcifs.smb.SmbTransport.negotiate(SmbTransport.java:289)
at jcifs.smb.SmbTransport.doConnect(SmbTransport.java:319)
at jcifs.util.transport.Transport.run(Transport.java:241)
at java.base/java.lang.Thread.run(Thread.java:834)

at jcifs.util.transport.Transport.run(Transport.java:258)
at java.base/java.lang.Thread.run(Thread.java:834)

at jcifs.smb.SmbTransport.connect(SmbTransport.java:309)
at jcifs.smb.SmbTree.treeConnect(SmbTree.java:156)
at jcifs.smb.SmbFile.doConnect(SmbFile.java:911)
at jcifs.smb.SmbFile.connect(SmbFile.java:954)
at jcifs.smb.SmbFile.connect0(SmbFile.java:880)
at jcifs.smb.SmbFile.open0(SmbFile.java:972)
at jcifs.smb.SmbFile.open(SmbFile.java:1006)
at jcifs.smb.SmbFileInputStream.(SmbFileInputStream.java:73)
at jcifs.smb.SmbFileInputStream.(SmbFileInputStream.java:65)
at com.example.demo.controller.shareSmbFileUtil.smbGet(shareSmbFileUtil.java:40)
at com.example.demo.controller.shareSmbFileUtil.main(shareSmbFileUtil.java:103)

Exception in thread "main" java.lang.NullPointerException
at com.example.demo.controller.shareSmbFileUtil.smbGet(shareSmbFileUtil.java:52)
at com.example.demo.controller.shareSmbFileUtil.main(shareSmbFileUtil.java:103)

我的解答思路和尝试过的方法

有权限的IP可以直接io流读写

我想要达到的结果

正常下载文件