net.schmizz.sshj.userauth.UserAuthException：用尽可用的身份验证方法

Question

第一次询问stackoverflow，也使用sshj。除了 sshj 提供的示例之外，我还没有找到任何好的资源来帮助使用这个 API。

我一直在尝试使用 sshj 进行远程端口转发，但遇到了这个错误。

Exception in thread "main" net.schmizz.sshj.userauth.UserAuthException: Exhausted available authentication methods

我使用虚拟机测试了身份验证，但没有使用公钥。我将使用它连接到我知道登录名的 EC2 实例。

public void startRemotePortForwardingConnection(LocalPortForwarder.Parameters parameters) throws IOException{
    sshClient.connect(parameters.getLocalHost());
    this.connectionStatus = CONNECTED;
    System.out.print("Connected to localhost" + NEWLINE);

    try {
        sshClient.authPassword(this.username, this.password);
        System.out.print("Authorized with as user " + username + " with password " + password + NEWLINE);

        // the local port we should be listening on
        RemotePortForwarder.Forward localPortToListenOn = new RemotePortForwarder.Forward(parameters.getLocalPort());
        System.out.print("localPortToListenOn initialized" + NEWLINE);

        // where we should forward the packets
        InetSocketAddress socketAddress = new InetSocketAddress(parameters.getRemoteHost(), parameters.getRemotePort());
        SocketForwardingConnectListener remotePortToForwardTo = new SocketForwardingConnectListener(socketAddress);
        System.out.print("remotePortToForwardTo initialized" + NEWLINE);

        //bind the forwarder to the correct ports
        sshClient.getRemotePortForwarder().bind(localPortToListenOn, remotePortToForwardTo);
        System.out.print("ports bound together" + NEWLINE);

        sshClient.getTransport().setHeartbeatInterval(30);
        sshClient.getTransport().join();
    }
    finally {
        sshClient.disconnect();
    }
}

可能不是最好的（甚至是正确的）方法。

Answer 1

尝试使用 client.addHostKeyVerifier(new PromiscuousVerifier());。我发送了两个配置，第一个是公钥，第二个是用户名/密码。

private static SSHClient setupSshj(String remoteHost, String username, String password) throws Exception {
    SSHClient client = new SSHClient();
    client.addHostKeyVerifier(new PromiscuousVerifier());
    client.connect(remoteHost);
    client.authPassword(username, password);
    return client;
}

private static SSHClient setupSshWithPublicKey(String remoteHost, int port, String username, String publicKey) throws Exception {
    SSHClient client = new SSHClient();
    client.addHostKeyVerifier(new PromiscuousVerifier());
    client.connect(remoteHost, port);
    client.authPublickey(username, publicKey);
    return client;
}

Answer 2

我为之前的一个类似问题写了一个示例，您可以直接在 groovyconsole 中运行该示例，该示例将连接到 EC2 实例：https://stackoverflow.com/a/15800383/311525