JSch连接问题: JSchException:算法协商失败-即使安装了JCE
JSch连接问题: JSchException:算法协商失败-即使安装了JCE
提问于 2020-07-08 14:16:51
我试图使用JSch连接到服务器，但这会给连接带来问题。我能够使用PuTTY连接到服务器，但不使用Java代码。
我正在使用jdk1.8.0_171
下面是代码片段
session = jsch.getSession(username, server, SSH_PORT);
session.setPassword(password);
session.setConfig("StrictHostKeyChecking", "no");
session.setTimeout(timeout);
session.connect(timeout);我得到了以下例外：
com.jcraft.jsch.JSchException: Algorithm negotiation fail
at com.jcraft.jsch.Session.receive_kexinit(Session.java:590)
at com.jcraft.jsch.Session.connect(Session.java:320)下面是JSch日志：
INFO: Connecting to <servername> port 22
INFO: Connection established
INFO: Remote version string: SSH-2.0-OpenSSH_8.0
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: 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: curve25519-sha256@libssh.org,diffie-hellman-group18-sha512,diffie-hellman-group14-sha256,diffie-hellman-group16-sha512
INFO: kex: server: rsa-sha2-512,rsa-sha2-256,ssh-rsa
INFO: kex: server: chacha20-poly1305@openssh.com,aes256-gcm@openssh.com,aes128-gcm@openssh.com,aes256-ctr,aes192-ctr,aes128-ctr
INFO: kex: server: chacha20-poly1305@openssh.com,aes256-gcm@openssh.com,aes128-gcm@openssh.com,aes256-ctr,aes192-ctr,aes128-ctr
INFO: kex: server: hmac-sha2-512-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512,hmac-sha2-256,hmac-sha1-etm@openssh.com,hmac-sha1,umac-128-etm@openssh.com,umac-64-etm@openssh.com,umac-128@openssh.com,umac-64@openssh.com
INFO: kex: server: hmac-sha2-512-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512,hmac-sha2-256,hmac-sha1-etm@openssh.com,hmac-sha1,umac-128-etm@openssh.com,umac-64-etm@openssh.com,umac-128@openssh.com,umac-64@openssh.com
INFO: kex: server: none,zlib@openssh.com
INFO: kex: server: none,zlib@openssh.com
INFO: kex: server:
INFO: kex: server:
INFO: kex: client: ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group14-sha1,diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,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,aes192-ctr,aes192-cbc,aes256-ctr,aes256-cbc
INFO: kex: client: aes128-ctr,aes128-cbc,3des-ctr,3des-cbc,blowfish-cbc,aes192-ctr,aes192-cbc,aes256-ctr,aes256-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: Disconnecting from <servername> port 22
com.jcraft.jsch.JSchException: Algorithm negotiation fail下面是pom文件：
<dependency>
<groupId>com.jcraft</groupId>
<artifactId>jsch</artifactId>
<version>0.1.54</version>
</dependency>我还尝试使用JSch 0.1.55，仍然是相同的问题。
我查过JSchException:算法协商失败了。但是正如你在日志中看到的，所有的密码都是可用的。
最好在服务器端不进行任何更改。
我该怎么解决这个问题？谢谢你的帮助。
Stack Overflow用户
发布于 2022-01-14 17:39:51
对于面临此问题的人，请将pom更改为：
<!-- https://mvnrepository.com/artifact/com.jcraft/jsch -->
<dependency>
<groupId>com.jcraft</groupId>
<artifactId>jsch</artifactId>
<version>0.1.54</version>
</dependency>至：
<!-- https://mvnrepository.com/artifact/com.github.mwiede/jsch -->
<dependency>
<groupId>com.github.mwiede</groupId>
<artifactId>jsch</artifactId>
<version>0.1.72</version>
</dependency>页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/62796891
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