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[英]ssh connection fails with j2ssh giving TransportProtocolException
[英]Facing com.sshtools.j2ssh.transport.TransportProtocolException for j2ssh plugin
我知道LeeDavidPainter是j2ssh插件的作者。 我想问一个困扰我的问题。 我正在尝试仅使用IP和密码使用j2ssh插件连接到系统。 我看到此堆栈跟踪:
INFO: Loading key exchange methods
Mar 09, 2016 5:23:05 PM com.sshtools.j2ssh.transport.publickey.SshKeyPairFactory <clinit>
INFO: Loading public key algorithms
Mar 09, 2016 5:23:05 PM com.sshtools.j2ssh.transport.compression.SshCompressionFactory <clinit>
INFO: Loading compression methods
Mar 09, 2016 5:23:05 PM com.sshtools.j2ssh.transport.hmac.SshHmacFactory <clinit>
INFO: Loading message authentication methods
Mar 09, 2016 5:23:05 PM com.sshtools.j2ssh.transport.TransportProtocolCommon startTransportProtocol
INFO: Starting transport protocol
Mar 09, 2016 5:23:05 PM com.sshtools.j2ssh.transport.TransportProtocolCommon run
INFO: Registering transport protocol messages with inputstream
Mar 09, 2016 5:23:06 PM com.sshtools.j2ssh.transport.TransportProtocolCommon negotiateVersion
INFO: Negotiating protocol version
Mar 09, 2016 5:23:06 PM com.sshtools.j2ssh.transport.TransportProtocolCommon negotiateVersion
INFO: Protocol negotiation complete
Mar 09, 2016 5:23:06 PM com.sshtools.j2ssh.transport.TransportProtocolCommon sendMessage
INFO: Sending SSH_MSG_KEX_INIT
Mar 09, 2016 5:23:06 PM com.sshtools.j2ssh.transport.TransportProtocolCommon startBinaryPacketProtocol
INFO: Received SSH_MSG_KEX_INIT
Mar 09, 2016 5:23:06 PM com.sshtools.j2ssh.transport.TransportProtocolCommon beginKeyExchange
INFO: Starting key exchange
Mar 09, 2016 5:23:06 PM com.sshtools.j2ssh.transport.TransportProtocolCommon sendMessage
INFO: Sending SSH_MSG_DISCONNECT
com.sshtools.j2ssh.transport.TransportProtocolException: The connection did not complete
at com.sshtools.j2ssh.transport.TransportProtocolClient.onStartTransportProtocol(Unknown Source)
at com.sshtools.j2ssh.transport.TransportProtocolCommon.startTransportProtocol(Unknown Source)
at com.sshtools.j2ssh.SshClient.connect(Unknown Source)
at com.sshtools.j2ssh.SshClient.connect(Unknown Source)
at checkThat.connect(checkThat.java:34)
at checkThat.main(checkThat.java:19)
我看到他的一篇文章中他说这已经过时了,您可以使用一个新的插件J2SSH Maverick。
但是当我使用它时,我看到这里使用的方法与新插件不兼容。 所以我也必须改变方法。 我还将在下面显示我的代码。
import java.io.IOException;
import java.util.List;
import com.sshtools.j2ssh.SshClient;
import com.sshtools.j2ssh.authentication.AuthenticationProtocolState;
import com.sshtools.j2ssh.authentication.KBIAuthenticationClient;
import com.sshtools.j2ssh.authentication.PasswordAuthenticationClient;
import com.sshtools.j2ssh.transport.IgnoreHostKeyVerification;
public class checkThat {
public static void main(String s[])
{
try {
connect();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public static void connect() throws Exception {
try {
int result =-1;
String m_sUser= "user";
String m_sPassword="pswd";
SshClient ssh = new SshClient();
try{
ssh.connect("1.1.1.1", 22, new IgnoreHostKeyVerification());
}catch (IOException ie)
{
ie.printStackTrace();
}
//System.out.println( "Connect successful");
List authType = ssh.getAvailableAuthMethods(m_sUser);
if(!authType.isEmpty() && authType.contains("password"))
{
//m_logger.severe("FTSSH:Connected to host via password");
PasswordAuthenticationClient pwd = new PasswordAuthenticationClient();
pwd.setUsername(m_sUser);
pwd.setPassword(m_sPassword);
// Authenticate the user
result = ssh.authenticate(pwd);
}
else
{
//m_logger.severe("FTSSH:Connected to host via KBI");
KBIAuthenticationClient kbi = new KBIAuthenticationClient();
kbi.setUsername(m_sUser);
/*ASCKBIRequestHandler kbiHandler = new ASCKBIRequestHandler();
kbiHandler.setPassCode(m_sPassword);
kbi.setKBIRequestHandler(kbiHandler);*/
// Authenticate the user
result = ssh.authenticate(kbi);
}
/* Authenticate.
* If you get an IOException saying something like
* "Authentication method password not supported by the server at this stage."
*/
PasswordAuthenticationClient pwd = new PasswordAuthenticationClient();
pwd.setUsername("user");
pwd.setPassword("pswd");
result = ssh.authenticate(pwd);
if (result != AuthenticationProtocolState.COMPLETE){
throw new Exception("Login to failed");
}
/*session = ssh.openSessionChannel();
sor = new SessionOutputReader(session);
// Request a pseudo terminal, if you do not you may not see the prompt
session.requestPseudoTerminal("gogrid",80,48, 0 , 0, "");
// Start the users shell
session.startShell();*/
} catch (Exception e) {
//log.error(e.getMessage(), e);
System.out.println( e.getMessage());
e.printStackTrace();
throw new Exception("Login to failed");
}
}
}
因此,在这里,如果将.jar文件从j2ssh更改为j2ssh特立独行,则无法解析sshClient
, ignoreHostKeyVerification
, PasswordAuthenticationClient
等方法。
可能是什么问题?
J2SSH API和J2SSH Maverick API是不同的产品。 因此,您不能期望在不重构的情况下使用相同的源代码。 过去我曾提到过,API是相似的。 但是,作为完整的重写,Maverick API具有改进/差异,这意味着您需要查看其随附的示例。
我建议您看一下J2SSH Maverick的PasswordConnect.java示例。
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