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之前我是用jsch连接服务器的，但是没办法使用私钥连接，搜了一下似乎是不支持新版的SSH-rsa，并且jsch很久没更新了，java - "com.jcraft.jsch.JSchException: Auth fail" with working passwords - Stack Overflow

没办法只好使用sshj来连接，但是sshj并没有找到任何和proxy相关的方法，我在网上也没找到任何sshj使用代理的文章，只好去看git上的源码，发现在老版本是有proxy方法的，在0.33分支上废弃后删掉了，这个信息后来也删除了，只有看history才能看到，实属有点坑

可以看出来要通过注入SocketFactory来实现代理，sshj连接的代码我就不放了，网上都有，就放代理相关的代码

自定义ProxySocketFactory

import javax.net.SocketFactory;
import java.io.IOException;
import java.net.*;public class ProxySocketFactory extends SocketFactory {private final Proxy proxy;public ProxySocketFactory(Proxy proxy) {this.proxy = proxy;}@Overridepublic Socket createSocket() {return new Socket(proxy);}@Overridepublic Socket createSocket(String host, int port) throws IOException, UnknownHostException {Socket socket = new Socket(proxy);socket.connect(new InetSocketAddress(host, port));return socket;}@Overridepublic Socket createSocket(InetAddress address, int port) throws IOException {Socket socket = new Socket(proxy);socket.connect(new InetSocketAddress(address, port));return new Socket(address, port);}@Overridepublic Socket createSocket(String host, int port, InetAddress clientAddress, int clientPort) throws IOException, UnknownHostException {Socket socket = new Socket(proxy);socket.bind(new InetSocketAddress(clientAddress, clientPort));socket.connect(new InetSocketAddress(host, port));return socket;}@Overridepublic Socket createSocket(InetAddress address, int port, InetAddress clientAddress, int clientPort) throws IOException {Socket socket = new Socket(proxy);socket.bind(new InetSocketAddress(clientAddress, clientPort));socket.connect(new InetSocketAddress(address, port));return socket;}
}

在SSHClient.connect之前注入

if(!StringUtils.isEmpty(proxy)){//proxy=127.0.0.1:2100String[] split = proxy.split(":");sshClient.setSocketFactory(new ProxySocketFactory(new Proxy(Proxy.Type.HTTP, new InetSocketAddress(split[0], Integer.valueOf(split[1])))));
}
sshClient.connect(host,port);