我使用JSch制作了一个SSH客户端。该客户端可以正确地与我的Apache Mina SSH服务器配合使用。但是当我尝试用真正的设备进行测试时，它失败了。
这是客户端的代码：
public boolean openConnection() throws ItsSshException {
boolean connectSuccess = false;
Properties config = new Properties();
config.put("StrictHostKeyChecking", "no");
jschSSH.setConfig(config);
try {
sshSession = jschSSH.getSession(username, hostname, port);
sshSession.setPassword(password);
sshSession.connect(connectionTimeout);
LOGGER.info("Connection timeout : " + connectionTimeout);
Thread.sleep(1000);
sshHChannel = sshSession.openChannel("shell");
sshHChannel.connect();
in = sshHChannel.getInputStream();
out = new PrintStream(sshHChannel.getOutputStream());
clearInitialSocketState();
connectSuccess = true;
} catch (Exception e) {
LOGGER.error("Error during connecting to host: " + hostname +
", port: " + port + "!", e);
throw new ItsSshException("Error during connecting to host: " + e.getMessage());
}
LOGGER.info("connectSuccess : " + connectSuccess);
return connectSuccess;
}
代码在这个点上失败了：
sshHChannel = sshSession.openChannel("shell");
连接主机 127.0.0.1，端口 22 时出现错误！
com.jcraft.jsch.JSchException：会话中断
at com.jcraft.jsch.Session.openChannel(Session.java:861)
我的问题是如何解决这个问题并且它是什么原因导致的？
以下是 JSch 日志：
INFO: Connecting to 127.0.0.1 port 22
INFO: Connection established
INFO: Remote version string: SSH-2.0-Mocana SSH
INFO: Local version string: SSH-2.0-JSCH-0.1.54
INFO: CheckCiphers: aes256-ctr,aes192-ctr,aes128-ctr,aes256-cbc,aes192-cbc,aes128-cbc,3des-ctr,arcfour,arcfour128,arcfour256
INFO: aes256-ctr is not available.
INFO: aes192-ctr is not available.
INFO: aes256-cbc is not available.
INFO: aes192-cbc is not available.
INFO: CheckKexes: diffie-hellman-group14-sha1,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521
INFO: CheckSignatures: ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521
INFO: SSH_MSG_KEXINIT sent
INFO: SSH_MSG_KEXINIT received
INFO: kex: server: diffie-hellman-group14-sha1,diffie-hellman-group1-sha1
INFO: kex: server: ssh-dss,ssh-rsa
INFO: kex: server: aes256-cbc,rijndael256-cbc,aes192-cbc,rijndael192-cbc,aes128-cbc,rijndael128-cbc,3des-cbc,arcfour
INFO: kex: server: aes256-cbc,rijndael256-cbc,aes192-cbc,rijndael192-cbc,aes128-cbc,rijndael128-cbc,3des-cbc,arcfour
INFO: kex: server: hmac-sha1,hmac-sha1-96,hmac-md5,hmac-md5-96
INFO: kex: server: hmac-sha1,hmac-sha1-96,hmac-md5,hmac-md5-96
INFO: kex: server: none
INFO: kex: server: none
INFO: kex: server:
INFO: kex: server:
INFO: kex: client: diffie-hellman-group1-sha1
INFO: kex: client: ssh-rsa,ssh-dss,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521
INFO: kex: client: aes128-ctr,aes128-cbc,3des-ctr,3des-cbc,blowfish-cbc
INFO: kex: client: aes128-ctr,aes128-cbc,3des-ctr,3des-cbc,blowfish-cbc
INFO: kex: client: hmac-md5,hmac-sha1,hmac-sha2-256,hmac-sha1-96,hmac-md5-96
INFO: kex: client: hmac-md5,hmac-sha1,hmac-sha2-256,hmac-sha1-96,hmac-md5-96
INFO: kex: client: none
INFO: kex: client: none
INFO: kex: client:
INFO: kex: client:
INFO: kex: server->client aes128-cbc hmac-md5 none
INFO: kex: client->server aes128-cbc hmac-md5 none
INFO: SSH_MSG_KEXDH_INIT sent
INFO: expecting SSH_MSG_KEXDH_REPLY
INFO: ssh_rsa_verify: signature true
WARN: Permanently added '127.0.0.1' (RSA) to the list of known hosts.
INFO: SSH_MSG_NEWKEYS sent
INFO: SSH_MSG_NEWKEYS received
INFO: SSH_MSG_SERVICE_REQUEST sent
INFO: SSH_MSG_SERVICE_ACCEPT received
INFO: Authentications that can continue: publickey,keyboard-interactive,password
INFO: Next authentication method: publickey
INFO: Authentications that can continue: keyboard-interactive,password
INFO: Next authentication method: keyboard-interactive
INFO: Authentications that can continue: password
INFO: Next authentication method: password
INFO: Authentication succeeded (password).
INFO: Caught an exception, leaving main loop due to End of IO Stream Read
INFO: Disconnecting from 127.0.0.1 port 22