JSch简单封装，具体见http://www.jcraft.com/jsch/

JschClient.java

package com.iuni.ops.common;

import com.google.common.collect.Lists;
import com.google.common.io.Files;
import com.jcraft.jsch.*;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.util.Assert;
import org.springframework.util.DigestUtils;

import java.io.BufferedReader;
import java.io.File;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.List;


/**
 * Jsch简单封装，多台主机用户及密码共用并配置至ops.properties
 *
 * @author YAGNLiiN
 * @date 2015-01-16 14:27
 */
public abstract class JschClient {
    private static final Logger log = LoggerFactory.getLogger(JschClient.class);

    private static PropertiesLoader prop = new PropertiesLoader("/ops.properties");


    /**
     * 执行Linux命令，注：执行文件上传请用copyTo方法
     *
     * 如：
     *
     * String commond =
     * "scp -t JschClient.java www@18.8.5.137:/usr/local/tomcat-iuni-order-api/webapps/ROOT/"
     *
     * List<String> rs = JschClient.sh("18.8.5.137", commond);
     *
     *
     * @param host
     * @param commond
     * @return
     */
    public static final List<String> sh(String host, String commond) {
        Assert.hasLength(host, "host不能为空");
        Assert.hasLength(commond, "commond不能为空");

        List<String> rs = Lists.newArrayList();
        ChannelExec channelExec = null;
        BufferedReader reader = null;
        Session session = null;

        try {

            String username = prop.getProperty("ssh.username");
            String password = prop.getProperty("ssh.password");

            JSch jsch = new JSch();
            session = jsch.getSession(username, host);
            session.setPassword(password);
            // 设置第一次登陆的时候提示，可选值：(ask | yes | no)
            session.setConfig("StrictHostKeyChecking", "no");
            session.connect(30000);

            channelExec = (ChannelExec) session.openChannel("exec");

            channelExec.setCommand(commond);
            channelExec.setInputStream(null);
            channelExec.setErrStream(System.err);
            channelExec.connect();

            reader = new BufferedReader(new InputStreamReader(channelExec.getInputStream()));

            String line;
            while ((line = reader.readLine()) != null) {
                rs.add(line);
            }

        } catch (JSchException e) {
            log.error("****Jsch sh 出错了****", e);
        } catch (IOException e) {
            // do nothing
        } finally {
            if (reader != null) {
                try {
                    reader.close();
                } catch (IOException e) {
                }
            }

            if (channelExec != null && channelExec.isConnected()) {
                channelExec.disconnect();
            }

            if (session != null && session.isConnected()) {
                session.disconnect();
            }
        }

        return rs;
    }


    /**
     * 文件上传
     *
     * @param host
     * @param localFile
     * @param remoteFile
     */
    public static final void copyTo(String host, String localFile, String remoteFile) {

        Assert.hasLength(host, "host不能为空");
        Assert.hasLength(localFile, "localFile不能为空");
        Assert.hasLength(remoteFile, "remoteFile不能为空");
        Assert.isTrue(Files.isFile().apply(new File(localFile)), "localFile必须为文件");

        ChannelSftp sftp = null;
        Session session = null;

        try {
            String username = prop.getProperty("ssh.username");
            String password = prop.getProperty("ssh.password");

            JSch jsch = new JSch();
            session = jsch.getSession(username, host);
            session.setPassword(password);
            // 设置第一次登陆的时候提示，可选值：(ask | yes | no)
            session.setConfig("StrictHostKeyChecking", "no");
            session.connect(30000);

            sftp = (ChannelSftp) session.openChannel("sftp");
            sftp.connect();

            sftp.put(localFile, remoteFile, ChannelSftp.OVERWRITE);
            sftp.quit();

        } catch (JSchException e) {
            log.error("****Jsch copyTo 出错了****", e);
        } catch (SftpException e) {
            log.error("****Jsch copyTo 出错了****", e);
        } finally {

            if (sftp != null && sftp.isConnected()) {
                sftp.disconnect();
            }

            if (session != null && session.isConnected()) {
                session.disconnect();
            }
        }

    }


    public static void main(String[] args) {

        String host = "18.8.5.137";

        // 文件上传至tomcat部署的机子
        // String local = "D:/workspace/ops_mgr_plat/ops_mgr/target/ops.war";
        // String remote =
        // "/usr/local/tomcat-iuni-order-api/webapps/test/ops2.zip";
        // JschClient.copyTo(host, local, remote);

        // 查看日志
        // String commond =
        // "tail -n 200 /usr/local/tomcat-iuni-order-api/logs/catalina.out";

        // 压缩文件，备份
        // String commond =
        // "tar zcvf /usr/local/tomcat-iuni-order-api/webapps/ROOT/20150116.tar.gz /usr/local/tomcat-iuni-order-api/webapps/ROOT/WEB-INF/classes";

        // 解压文件，-o 覆盖
        // String commond =
        // "unzip -o -d /usr/local/tomcat-iuni-order-api/webapps/test/ /usr/local/tomcat-iuni-order-api/webapps/test/ops2.zip";

        // 远程文件md5计算，然后取其第一段即可，如："4656844fba00e9cc3bd4c834598e2222  /usr/local/tomcat-iuni-order-api/webapps/test/ops2.zip"
        String commond = "md5sum /usr/local/tomcat-iuni-order-api/webapps/test/ops2.zip";

        List<String> rs = JschClient.sh(host, commond);

        for (String s : rs) {
            System.out.println(s);
        }

        // 本地文件md5计算
        try {
            File f = new File("D:/workspace/ops_mgr_plat/ops_mgr/target/ops.war");
            String md5 = DigestUtils.md5DigestAsHex(Files.toByteArray(f));
        } catch (IOException e) {
        }

    }

}