java客户端连接ssh失败问题的两种解决方法

<dependency>
    <groupId>com.jcraft</groupId>
    <artifactId>jsch</artifactId>
    <version>0.1.55</version> <!-- 检查最新版本 -->
</dependency>

import com.jcraft.jsch.*;

public class SSHConnector {
    public static void main(String[] args) {
        try {
            JSch jsch = new JSch();
            
            // 设置支持的算法
            java.util.Properties config = new java.util.Properties();
            
            // 关键配置：指定算法
            config.put("kex", "diffie-hellman-group1-sha1,diffie-hellman-group14-sha1");
            config.put("server_host_key", "ssh-rsa,ssh-dss");
            config.put("cipher.s2c", "aes128-ctr,aes128-cbc,3des-cbc");
            config.put("cipher.c2s", "aes128-ctr,aes128-cbc,3des-cbc");
            config.put("mac.s2c", "hmac-sha1");
            config.put("mac.c2s", "hmac-sha1");
            
            Session session = jsch.getSession("username", "172.16.29.254", 22);
            session.setConfig(config);
            session.setPassword("password");
            session.setConfig("StrictHostKeyChecking", "no"); // 临时测试用
            
            session.connect(30000); // 30秒超时
            System.out.println("连接成功");
            
            session.disconnect();
        } catch (JSchException e) {
            e.printStackTrace();
        }
    }
}

#解决no matching key exchange method found报错
KexAlgorithms +diffie-hellman-group14-sha1
#解决no matching host key type found报错
HostKeyAlgorithms +ssh-rsa

hellxz@hz:~$ sudo sshd -T | grep -E "^hostkeyalg|^kexalg"
kexalgorithms sntrup761x25519-sha512@openssh.com,curve25519-sha256,curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group14-sha256,diffie-hellman-group14-sha1
hostkeyalgorithms ssh-ed25519-cert-v01@openssh.com,ecdsa-sha2-nistp256-cert-v01@openssh.com,ecdsa-sha2-nistp384-cert-v01@openssh.com,ecdsa-sha2-nistp521-cert-v01@openssh.com,sk-ssh-ed25519-cert-v01@openssh.com,sk-ecdsa-sha2-nistp256-cert-v01@openssh.com,rsa-sha2-512-cert-v01@openssh.com,rsa-sha2-256-cert-v01@openssh.com,ssh-ed25519,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,sk-ssh-ed25519@openssh.com,sk-ecdsa-sha2-nistp256@openssh.com,rsa-sha2-512,rsa-sha2-256,ssh-rsa