java遠程調用shell指令碼

import java.io.IOException;import java.io.InputStream;import java.io.UnsupportedEncodingException;import java.nio.charset.Charset;import org.apache.commons.io.IOUtils;import ch.ethz.ssh2.ChannelCondition;import ch.ethz.ssh2.Connection;import ch.ethz.ssh2.Session;import ch.ethz.ssh2.StreamGobbler;public class RemoteShellExecutor {          private Connection conn;     /** 遠程機器IP */     private String ip;     /** 使用者名稱 */     private String osUsername;     /** 密碼 */     private String password;     private String charset = Charset.defaultCharset().toString();     private static final int TIME_OUT = 1000 * 5 * 60;     /**      * 建構函式      * @param ip      * @param usr      * @param pasword      */     public RemoteShellExecutor(String ip, String usr, String pasword) {          this.ip = ip;         this.osUsername = usr;         this.password = pasword;     }     /**     * 登入     * @return     * @throws IOException     */     private boolean login() throws IOException {         conn = new Connection(ip);         conn.connect();         return conn.authenticateWithPassword(osUsername, password);     }     /**     * 執行指令碼     *      * @param cmds     * @return     * @throws Exception     */     public int exec(String cmds) throws Exception {         InputStream stdOut = null;         InputStream stdErr = null;         String outStr = "";         String outErr = "";         int ret = -1;         try {         if (login()) {             // Open a new {@link Session} on this connection             Session session = conn.openSession();             // Execute a command on the remote machine.             session.execCommand(cmds);                          stdOut = new StreamGobbler(session.getStdout());             outStr = processStream(stdOut, charset);                          stdErr = new StreamGobbler(session.getStderr());             outErr = processStream(stdErr, charset);                          session.waitForCondition(ChannelCondition.EXIT_STATUS, TIME_OUT);                          System.out.println("outStr=" + outStr);             System.out.println("outErr=" + outErr);                          ret = session.getExitStatus();         } else {             throw new Exception("登入遠程機器失敗" + ip); // 自訂異常類 實現略         }         } finally {             if (conn != null) {                 conn.close();             }             IOUtils.closeQuietly(stdOut);             IOUtils.closeQuietly(stdErr);         }         return ret;     }     /**     * @param in     * @param charset     * @return     * @throws IOException     * @throws UnsupportedEncodingException     */     private String processStream(InputStream in, String charset) throws Exception {         byte[] buf = new byte[1024];         StringBuilder sb = new StringBuilder();         while (in.read(buf) != -1) {             sb.append(new String(buf, charset));         }         return sb.toString();     }    public static void main(String args[]) throws Exception {        RemoteShellExecutor executor = new RemoteShellExecutor("172.16.22.187", "root", "123456");        // 執行myTest.sh 參數為java Know dummy        System.out.println(executor.exec(" ./mtreceiver.sh start"));    }}