Jsch connection SSH problem exception:algorithm negotiation fail

Using Jenkins to configure the remote SSH server, an unreachable problem occurs, and after viewing the log, locate

[SSH] Exception:algorithm Negotiation Fail
Com.jcraft.jsch.JSchException:Algorithm Negotiation Fail
At Com.jcraft.jsch.Session.receive_kexinit (session.java:520)
At Com.jcraft.jsch.Session.connect (session.java:286)
At Com.jcraft.jsch.Session.connect (session.java:150)
At Org.jvnet.hudson.plugins.SSHSite.createSession (sshsite.java:141)
At Org.jvnet.hudson.plugins.SSHSite.executeCommand (sshsite.java:151)
At Org.jvnet.hudson.plugins.SSHBuildWrapper.executePreBuildScript (sshbuildwrapper.java:75)
At Org.jvnet.hudson.plugins.SSHBuildWrapper.setUp (sshbuildwrapper.java:59)
At Hudson.model.build$buildexecution.dorun (build.java:154)
At Hudson.model.abstractbuild$abstractbuildexecution.run (abstractbuild.java:533)
At Hudson.model.Run.execute (run.java:1754)
At Hudson.model.FreeStyleBuild.run (freestylebuild.java:43)
At Hudson.model.ResourceController.execute (resourcecontroller.java:89)
At Hudson.model.Executor.run (executor.java:240)
Finished:failure

Reason Analysis:

Unlike the exchange algorithms supported by OpenSSH and Jsch, one side is required to open the Exchange algorithm supported by the other.

OpenSSH enables only the following key exchange algorithms by default:
-curve25519-sha256@libssh.org
-ecdh-sha2-nistp256
-ecdh-sha2-nistp384
-ecdh-sha2-nistp521
-diffie-hellman-group-exchange-sha256
-DIFFIE-HELLMAN-GROUP14-SHA1

Where as Jsch claims to support this algorithms for key exchange:
-DIFFIE-HELLMAN-GROUP-EXCHANGE-SHA1
-DIFFIE-HELLMAN-GROUP1-SHA1

Solution:

In the SSH configuration file
/etc/ssh/sshd_config

Add the following two lines to allow SSH to support the corresponding algorithm and Macs

Kexalgorithms curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521, DIFFIE-HELLMAN-GROUP-EXCHANGE-SHA256,DIFFIE-HELLMAN-GROUP14-SHA1,DIFFIE-HELLMAN-GROUP-EXCHANGE-SHA1, Diffie-hellman-group1-sha1

MACs hmac-sha2-512-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-ripemd160-etm@openssh.com, UMAC-128-ETM@OPENSSH.COM,HMAC-SHA2-512,HMAC-SHA2-256,HMAC-RIPEMD160,UMAC-128@OPENSSH.COM,HMAC-MD5,HMAC-SHA1, hmac-sha1-96,hmac-md5-96

Reboot SSH After completion to resolve the problem