我正在创建许多不同的（会话）对象，并从Oracle pl/sql程序包向java类传递登录凭据。然后我将这些（会话）对象存储在一个向量中。该想法是连接，打开所需通道，关闭通道，最后从该向量中断开特定会话。我设法做到了，但每个连接只能工作一次。我的意思是，在向量中，我有（session1，session2，session3），当我调用session1.connect（）然后session1.disconnect（）时，我不能再次调用session1.connect（） ，因为显然它尝试连接到服务器，但是我收到以下错误消息：
检索存储在向量中的会话后，我打开了一个会话并获得：
检索存储在向量中的会话后，我打开了一个会话并获得：
INFO: Connecting to sftp.myserver.com port 2122
INFO: Connection established
INFO: Remote version string: SSH-2.0-OpenSSH_4.7
INFO: Local version string: SSH-2.0-JSCH-0.1.48
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: arcfour256 is not available.
INFO: CheckKexes: diffie-hellman-group14-sha1
INFO: diffie-hellman-group14-sha1 is not available.
INFO: SSH_MSG_KEXINIT sent
INFO: SSH_MSG_KEXINIT received
INFO: kex: server: diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange- sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1
INFO: kex: server: ssh-rsa,ssh-dss
INFO: kex: server: aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,arcfour128,arcfour256,arcfour,aes192-cbc,aes256-cbc,rijndael-cbc@lysator.liu.se,aes128-ctr,aes192-ctr,aes256-ctr
INFO: kex: server: aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,arcfour128,arcfour256,arcfour,aes192-cbc,aes256-cbc,rijndael-cbc@lysator.liu.se,aes128-ctr,aes192-ctr,aes256-ctr
INFO: kex: server: hmac-md5,hmac-sha1,umac-64@openssh.com,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96
INFO: kex: server: hmac-md5,hmac-sha1,umac-64@openssh.com,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96
INFO: kex: server: none,zlib@openssh.com
INFO: kex: server: none,zlib@openssh.com
INFO: kex: server:
INFO: kex: server:
INFO: kex: client: diffie-hellman-group1-sha1,diffie-hellman-group-exchange-sha1
INFO: kex: client: ssh-rsa,ssh-dss
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-sha1-96,hmac-md5-96
INFO: kex: client: hmac-md5,hmac-sha1,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-ctr hmac-md5 none
INFO: kex: client->server aes128-ctr hmac-md5 none
INFO: SSH_MSG_KEXDH_INIT sent
INFO: expecting SSH_MSG_KEXDH_REPLY
INFO: ssh_rsa_verify: signature true
WARN: Permanently added 'sftp.myserver.com' (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: password
INFO: Next authentication method: password
INFO: Authentication succeeded (password).
INFO: Disconnecting from sftp.myserver.com port 2122
一切都正常，最后我断开了session1。
然后当我再次尝试使用session1时，我遇到以下异常...
INFO: Connecting to sftp.myserver.com port 2122
INFO: Connection established
INFO: Remote version string: SSH-2.0-OpenSSH_4.7
INFO: Local version string: SSH-2.0-JSCH-0.1.48
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: arcfour256 is not available.
INFO: CheckKexes: diffie-hellman-group14-sha1
INFO: diffie-hellman-group14-sha1 is not available.
INFO: SSH_MSG_KEXINIT sent
INFO: Disconnecting from sftp.myserver.com port 2122
com.jcraft.jsch.JSchException: Packet corrupt
at com.jcraft.jsch.Session.start_discard(Session.java:994)
at com.jcraft.jsch.Session.read(Session.java)
at com.jcraft.jsch.Session.connect(Session.java:288)
at com.jcraft.jsch.Session.connect(Session.java:162)
at sftp.make_dir(SFTP:118)
我在尝试重用Java对象（Session）的方式上是否有做错的地方？
非常感谢您的帮助。
Luca