JSch 0.1.53 session.connect（）抛出“IO流读取结束”

我下载了一个新的JSch 0.1.53库，并且JSch（sftp）下载任务不再有效。 此发布失败， session.connect()函数抛出错误Session.connect: java.io.IOException: End of IO Stream Read 。

我的旧jsch.jar（2011-10-06）对同一主机工作正常，也许我错过了一个新的配置道具？

 Session session=null; ChannelSftp channel=null; try { JSch.setLogger(SSHUtil.createJschLogger()); JSch jsch=new JSch(); session=jsch.getSession("myuser", "11.22.33.44", 22); session.setConfig("StrictHostKeyChecking", "no"); session.setPassword("mypwd"); session.connect(2000); // <-- FAILS HERE channel = (ChannelSftp)session.openChannel("sftp"); channel.connect(2000); ... 

这是一个广泛的JSch日志记录，表明正在进行什么。

 INFO : Connecting to 11.22.33.44 port 22 INFO : Connection established INFO : Remote version string: SSH-2.0-OpenSSH_6.6.1 INFO : Local version string: SSH-2.0-JSCH-0.1.53 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 : diffie-hellman-group14-sha1 is not available. INFO : ecdh-sha2-nistp256 is not available. INFO : ecdh-sha2-nistp384 is not available. INFO : ecdh-sha2-nistp521 is not available. INFO : CheckSignatures: ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521 INFO : ecdsa-sha2-nistp256 is not available. INFO : ecdsa-sha2-nistp384 is not available. INFO : ecdsa-sha2-nistp521 is not available. INFO : SSH_MSG_KEXINIT sent INFO : SSH_MSG_KEXINIT received INFO : kex: server: [e-mail],ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,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,ecdsa-sha2-nistp256,ssh-ed25519 INFO : kex: server: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,[e-mail],[e-mail],[e-mail],aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,[e-mail] INFO : kex: server: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,[e-mail],[e-mail],[e-mail],aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,[e-mail] INFO : kex: server: [e-mail],[e-mail],[e-mail],[e-mail],[e-mail],[e-mail],[e-mail],[e-mail],[e-mail],hmac-md5,hmac-sha1,[e-mail],[e-mail],hmac-sha2-256,hmac-sha2-512,hmac-ripemd160,[e-mail],hmac-sha1-96,hmac-md5-96 INFO : kex: server: [e-mail],[e-mail],[e-mail],[e-mail],[e-mail],[e-mail],[e-mail],[e-mail],[e-mail],hmac-md5,hmac-sha1,[e-mail],[e-mail],hmac-sha2-256,hmac-sha2-512,hmac-ripemd160,[e-mail],hmac-sha1-96,hmac-md5-96 INFO : kex: server: none,[e-mail] INFO : kex: server: none,[e-mail] INFO : kex: server: INFO : kex: server: INFO : kex: client: diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group1-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-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-ctr hmac-md5 none INFO : kex: client->server aes128-ctr hmac-md5 none INFO : SSH_MSG_KEX_DH_GEX_REQUEST(1024<1024<1024) sent INFO : expecting SSH_MSG_KEX_DH_GEX_GROUP INFO : Disconnecting from 11.22.33.44 port 22 Exception in thread "main" com.jcraft.jsch.JSchException: Session.connect: java.io.IOException: End of IO Stream Read at com.jcraft.jsch.Session.connect(Session.java:558) at com.jcraft.jsch.Session.connect(Session.java:183) at my.test.DownloadSFTP.main(DownloadSFTP.java:37) Caused by: java.io.IOException: End of IO Stream Read at com.jcraft.jsch.IO.getByte(IO.java:84) at com.jcraft.jsch.Session.read(Session.java:918) at com.jcraft.jsch.Session.connect(Session.java:323) 

我还有一个非常古老的Jsch.jar（2011-10-06），下载任务工作正常，这是一个日志。 我想要升级的原因是传输文件非常慢。 新版本应该做得更好我读过。

 INFO : Connecting to 11.22.33.44 port 22 INFO : Connection established INFO : Remote version string: SSH-2.0-OpenSSH_6.6.1 INFO : Local version string: SSH-2.0-JSCH-0.1.44 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 : SSH_MSG_KEXINIT sent INFO : SSH_MSG_KEXINIT received 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 '11.22.33.44' (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 : Authentication succeeded (keyboard-interactive). INFO : Disconnecting from 11.22.33.44 port 22 INFO : Caught an exception, leaving main loop due to socket closed 

编辑我有一个想法在Maven存储库中的 backstep版本，实际上这是一个非常新的版本无法正常工作。 以前的jsch-0.1.52.jar发布工作正常。 我尝试联系库开发人员。

这是一个有效的0.1.52版本的日志。

 INFO : Connecting to 11.22.33.44 port 22 INFO : Connection established INFO : Remote version string: SSH-2.0-OpenSSH_6.6.1 INFO : Local version string: SSH-2.0-JSCH-0.1.52 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 : diffie-hellman-group14-sha1 is not available. INFO : ecdh-sha2-nistp256 is not available. INFO : ecdh-sha2-nistp384 is not available. INFO : ecdh-sha2-nistp521 is not available. INFO : CheckSignatures: ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521 INFO : ecdsa-sha2-nistp256 is not available. INFO : ecdsa-sha2-nistp384 is not available. INFO : ecdsa-sha2-nistp521 is not available. INFO : SSH_MSG_KEXINIT sent INFO : SSH_MSG_KEXINIT received INFO : kex: server: [e-mail],ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,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,ecdsa-sha2-nistp256,ssh-ed25519 INFO : kex: server: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,[e-mail],[e-mail],[e-mail],aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,[e-mail] INFO : kex: server: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,[e-mail],[e-mail],[e-mail],aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,[e-mail] INFO : kex: server: [e-mail],[e-mail],[e-mail],[e-mail],[e-mail],[e-mail],[e-mail],[e-mail],[e-mail],hmac-md5,hmac-sha1,[e-mail],[e-mail],hmac-sha2-256,hmac-sha2-512,hmac-ripemd160,[e-mail],hmac-sha1-96,hmac-md5-96 INFO : kex: server: [e-mail],[e-mail],[e-mail],[e-mail],[e-mail],[e-mail],[e-mail],[e-mail],[e-mail],hmac-md5,hmac-sha1,[e-mail],[e-mail],hmac-sha2-256,hmac-sha2-512,hmac-ripemd160,[e-mail],hmac-sha1-96,hmac-md5-96 INFO : kex: server: none,[e-mail] INFO : kex: server: none,[e-mail] INFO : kex: server: INFO : kex: server: INFO : kex: client: diffie-hellman-group1-sha1,diffie-hellman-group-exchange-sha1,diffie-hellman-group-exchange-sha256 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-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-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 '11.22.33.44' (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 : Authentication succeeded (keyboard-interactive). 

Answer 1

JSch 0.1.53支持（并且更喜欢）diffie diffie-hellman-group-exchange-sha256 KEX，服务器声称也支持，所以JSch尝试使用它。

由于某种原因，服务器之后会断开连接。

要解决这个问题，强制JSch使用diffie-hellman-group1-sha1 KEX，JSch 0.1.52更喜欢：

 session.setConfig("kex", "diffie-hellman-group1-sha1"); 

Answer 2

我有同样的问题我刚刚将jsch版本更改为0.1.54并得到了解决

将其添加到您的pom.xml中

  com.jcraft jsch 0.1.54