package utils;

import com.jcraft.jsch.ChannelExec;
import com.jcraft.jsch.JSch;
import com.jcraft.jsch.JSchException;
import com.jcraft.jsch.Session;

import org.apache.commons.io.IOUtils;

import java.io.IOException;
import java.io.InputStream;

/**
 * Created by yanhang0610.
 */
public class SSHUtils {

	private static final String ENCODING = "UTF-8";

	public static Session getJSchSession(DestHost destHost) throws JSchException {
		JSch jsch = new JSch();

		Session session = jsch.getSession(destHost.getUsername(), destHost.getHost(), destHost.getPort());
		session.setPassword(destHost.getPassword());
		session.setConfig("StrictHostKeyChecking", "no");  // 第一次訪問伺服器時不用輸入yes
		session.setTimeout(destHost.getTimeout());
		session.connect();

		return session;
	}

	public static String execCommandByJSch(DestHost destHost, String command) throws IOException, JSchException {
		return execCommandByJSch(destHost, command, ENCODING);
	}

	public static String execCommandByJSch(DestHost destHost, String command, String resultEncoding) throws IOException, JSchException {
		Session session = getJSchSession(destHost);
		String result = execCommandByJSch(session, command, resultEncoding);
		session.disconnect();

		return result;
	}

	public static String execCommandByJSch(Session session, String command) throws IOException, JSchException {
		return execCommandByJSch(session, command, ENCODING);
	}

	public static String execCommandByJSch(Session session, String command, String resultEncoding) throws IOException, JSchException {
		ChannelExec channelExec = (ChannelExec) session.openChannel("exec");
		InputStream in = channelExec.getInputStream();
		channelExec.setCommand(command);
		channelExec.setErrStream(System.err);
		channelExec.connect();

		String result = IOUtils.toString(in, resultEncoding);

		channelExec.disconnect();

		return result;
	}

	/**
	 * 目標登入主機資訊
	 */
	public static class DestHost {
		private String host = "";
		private String username = "";
		private String password = "";
		private int port = 22;
		private int timeout = 60 * 60 * 1000;

		public DestHost(String host, String username, String password) {
			this(host, username, password, 22, 60 * 60 * 1000);
		}

		public DestHost(String host, String username, String password, int timeout) {
			this(host, username, password, 22, timeout);
		}

		public DestHost(String host, String username, String password, int port, int timeout) {
			this.host = host;
			this.username = username;
			this.password = password;
			this.port = port;
			this.timeout = timeout;
		}

		public String getHost() {
			return host;
		}

		public void setHost(String host) {
			this.host = host;
		}

		public String getUsername() {
			return username;
		}

		public void setUsername(String username) {
			this.username = username;
		}

		public String getPassword() {
			return password;
		}

		public void setPassword(String password) {
			this.password = password;
		}

		public int getPort() {
			return port;
		}

		public void setPort(int port) {
			this.port = port;
		}

		public int getTimeout() {
			return timeout;
		}

		public void setTimeout(int timeout) {
			this.timeout = timeout;
		}

	}

}
 

<span style="white-space:pre">		</span>try {
			SSHUtils.DestHost host = new SSHUtils.DestHost("192.168.1.110", "root", "root");

			String stdout = "";

//			stdout = SSHUtils.execCommandByJSch(host, "whoami");

			Session shellSession = SSHUtils.getJSchSession(host);
			stdout = SSHUtils.execCommandByJSch(shellSession, "cd ~");
			stdout = SSHUtils.execCommandByJSch(shellSession, "mkdir testtesttest");
			stdout = SSHUtils.execCommandByJSch(shellSession, "whoami");
			shellSession.disconnect();

			//System.out.println(stdout);
			response.getWriter().println(stdout);
		} catch (Exception e) {
			e.printStackTrace();
		}