使用ganymed-ssh2-build通过ssh获得远程服务器参数

1、项目中需要检测到几台远程服务器的参数，差了很多资料，决定用的这个

2、jar包：ganymed-ssh2-build210.jar

3、原理：向远程linux服务器发送脚本命令，得到该台服务器的信息

4、代码如下：

public class Basic {

    public static void main(String[] args) {

        String hostname1 = "";

        String username1 = "";

        String password1 = "";



        String hostname2 = "";

        String username2 = "";

        String password2 = "";

        String hostname3 = "";

        String username3 = "";

        String password3 = "";



        /**

         * 服务器1

         */

        Montor montor1 = getMontor(hostname1, username1, password1);

        /**

         * 服务器2

         */

        Montor montor2 = getMontor(hostname2, username2, password2);

        /**

         * 服务器3

         */

        Montor montor3 = getMontor(hostname3, username3, password3);

        System.out.println(montor1.toString());

        System.out.println(montor2.toString());

        System.out.println(montor3.toString());



    }



    private static Montor getMontor(String hostname, String username,

            String password) {

        Montor montor = null;

        try {

            Connection conn = new Connection(hostname);

            conn.connect();

            boolean isAuthenticated;

            isAuthenticated = conn.authenticateWithPassword(username, password);



            if (isAuthenticated == false)

                throw new IOException("Authentication failed.");



            

            montor = new Montor();

            montor.setHostName(exec(conn, "hostname"));

            montor.setDiskSpace(exec(conn, "df -h | awk 'NR==2 {print $2}'"));

            montor.setUserSpace(exec(conn, "df -h | awk 'NR==2 {print $3}'"));

            montor.setRemainingSpace(exec(conn,

                    "df -h | awk 'NR==2 {print $4}'"));

            montor.setMemory(exec(conn, "free -m | awk 'NR==2 {print $2}'"));

            montor.setUseMemory(exec(conn, "free -m | awk 'NR==2 {print $3}'"));

            montor.setRemainingMemory(exec(conn,

                    "free -m | awk 'NR==2 {print $4}'"));

            BigDecimal b1 = new BigDecimal(exec(conn,

                    "free -m | awk 'NR==2 {print $3}'"));

            BigDecimal b2 = new BigDecimal(exec(conn,

                    "free -m | awk 'NR==2 {print $2}'"));

            montor.setUsageMemory((b1.divide(b2, 2, BigDecimal.ROUND_HALF_UP))

                    .doubleValue()

                    * 100 + "%");

            conn.close();

        } catch (IOException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        }

        return montor;



    };

    /**

     * 

     * @param conn 连接

     * @param command 执行的sheel命令

     * @return

     */

    private static String exec(Connection conn, String command) {

        String data = "";

        try {

            Session sess = conn.openSession();

            //执行命令

            sess.execCommand(command);

            InputStream stdout = new StreamGobbler(sess.getStdout());

            BufferedReader br = new BufferedReader(

                    new InputStreamReader(stdout));



            while (true) {

                String line = br.readLine();

                if (line == null)

                    break;

                data = line;

            }

            br.close();

            sess.close();

        } catch (IOException e) {

            e.printStackTrace(System.err);

            System.exit(2);

        }

        return data;

    }

}

5、目前还需要服务器中各项服务的联通性，如tomcat,active-mq等服务 是否挂机，如有大婶知道，望告知

6、如果还有其他更好的方式望周知。