import com.jcraft.jsch.ProxySOCKS5; //导入依赖的package包/类
private void connect(String ip, int port, String user, String key, String passphrase, Proxy proxy) throws JSchException {
	jsch = new JSch();
	jsch.addIdentity(key);
	session = jsch.getSession(user, ip, port);
	
	if (proxy != null)
	{
		if ("HTTP".equalsIgnoreCase(proxy.getType()))
		{
			session.setProxy(new ProxyHTTP(proxy.getProxyIp(), proxy.getProxyPort()));
		}
		else if ("SOCKS5".equalsIgnoreCase(proxy.getType()))
		{
			session.setProxy(new ProxySOCKS5(proxy.getProxyIp(), proxy.getProxyPort()));
		}
		else if ("SOCKS4".equalsIgnoreCase(proxy.getType()))
		{
			session.setProxy(new ProxySOCKS4(proxy.getProxyIp(), proxy.getProxyPort()));
		}
	}
	
	session.setUserInfo(new MyUserInfo(null, passphrase));
	Properties conf = new Properties();
	conf.put("StrictHostKeyChecking", "no");
	session.setConfig(conf);
	synchronized (JSch.class) {
		session.connect(timeout);
	}
}
 

import com.jcraft.jsch.ProxySOCKS5; //导入依赖的package包/类
public void setProxySOCKS5(String proxy_host, int proxy_port, String proxy_user, String proxy_password){
	proxySOCKS5 = new ProxySOCKS5(proxy_host, proxy_port);
	if (proxy_user!=null)
		proxySOCKS5.setUserPasswd(proxy_user, proxy_password);
	proxyType=SOCKS5;
	if (myLogger!=null)
		myLogger.log(com.jcraft.jsch.Logger.DEBUG, "PROXY_SOCKS5 host="+proxy_host+"; port="+proxy_port+"; user="+proxy_user);
}
 

import com.jcraft.jsch.ProxySOCKS5; //导入依赖的package包/类
public Response<String> connect(String ip,int port,String user,String passwd, Proxy proxy){
	Response<String> resp = new Response<String>();
	
	try {
		jsch = new JSch();
		session = jsch.getSession(user, ip, port);
		
		if (proxy != null)
		{
			if ("HTTP".equalsIgnoreCase(proxy.getType()))
			{
				session.setProxy(new ProxyHTTP(proxy.getProxyIp(), proxy.getProxyPort()));
			}
			else if ("SOCKS5".equalsIgnoreCase(proxy.getType()))
			{
				session.setProxy(new ProxySOCKS5(proxy.getProxyIp(), proxy.getProxyPort()));
			}
			else if ("SOCKS4".equalsIgnoreCase(proxy.getType()))
			{
				session.setProxy(new ProxySOCKS4(proxy.getProxyIp(), proxy.getProxyPort()));
			}
		}
		
		session.setPassword(passwd);
		Properties conf = new Properties();
		conf.put("StrictHostKeyChecking", "no");
		session.setConfig(conf);
		session.connect();
		ftps = (ChannelSftp) session.openChannel("sftp");
		ftps.connect();
		
		resp.setCode(Response.OK);
		connected = true;
	} catch (JSchException e) {
		resp.setCode(Response.IO_EXCEPTION);
		resp.setPhrase("SftpException: " + e.getMessage());
	}
	return resp;
}
 

import com.jcraft.jsch.ProxySOCKS5; //导入依赖的package包/类
/**
 * Connects the connection.
 * @throws IOException if the unfortunate happens.
 */
@Override
public synchronized void connect() throws IOException {
    logger.debug("connecting...");
    Authentication auth = authentication;
    if (updater != null) {
        Authentication updatedAuth = updater.updateAuthentication(authentication);
        if (updatedAuth != null && auth != updatedAuth) {
            auth = updatedAuth;
        }
    }
    try {
        client = new JSch();
        if (auth.getPrivateKeyPhrase() == null) {
            client.addIdentity(auth.getPrivateKeyFile().getAbsolutePath(),
                    auth.getPrivateKeyFilePassword());
        } else {
            client.addIdentity(auth.getUsername(), auth.getPrivateKeyPhrase(), null,
                    auth.getPrivateKeyFilePassword().getBytes("UTF-8"));
        }
        client.setHostKeyRepository(new BlindHostKeyRepository());
        connectSession = client.getSession(auth.getUsername(), host, port);
        connectSession.setConfig("PreferredAuthentications", "publickey");
        if (proxy != null && !proxy.isEmpty()) {
            String[] splitted = proxy.split(":");
            if (splitted.length > 2 && splitted[1].length() >= PROTO_HOST_DELIM_LENGTH) {
                String pproto = splitted[0];
                String phost = splitted[1].substring(2);
                int pport = Integer.parseInt(splitted[2]);
                if (pproto.equals("socks5") || pproto.equals("http")) {
                    if (pproto.equals("socks5")) {
                         connectSession.setProxy(new ProxySOCKS5(phost, pport));
                    } else {
                         connectSession.setProxy(new ProxyHTTP(phost, pport));
                    }
                } else {
                    throw new MalformedURLException("Only http and socks5 protocols are supported");
                }
            } else {
                throw new MalformedURLException(proxy);
            }
        }
        connectSession.connect(this.connectionTimeout);
        logger.debug("Connected: {}", connectSession.isConnected());
        connectSession.setServerAliveInterval(ALIVE_INTERVAL);
    } catch (JSchException ex) {
        throw new SshException(ex);
    }
}
 

import com.jcraft.jsch.ProxySOCKS5; //导入依赖的package包/类
private com.jcraft.jsch.Proxy createProxy (String proxyHost, int proxyPort) {
    return USE_PROXY_TUNNELING
            ? new ProxyHTTP(proxyHost, proxyPort)
            : new ProxySOCKS5(proxyHost, proxyPort);
}