java远程调用shell脚本

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;
/** 远程机器IP */
private String ip;
/** 用户名 */
private String osUsername;
/** 密码 */
private String password;
private String charset = Charset.defaultCharset().toString();

private static final int TIME_OUT = 1000 * 5 * 60;

/**
* 构造函数
* @param ip
* @param usr
* @param pasword
*/
public RemoteShellExecutor(String ip, String usr, String pasword) {
this.ip = ip;
this.osUsername = usr;
this.password = pasword;
}

/**
* 登录
* @return
* @throws IOException
*/
private boolean login() throws IOException {
conn = new Connection(ip);
conn.connect();
return conn.authenticateWithPassword(osUsername, password);
}

/**
* 执行脚本
*
* @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("登录远程机器失败" + ip); // 自定义异常类 实现略
}
} 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");
// 执行myTest.sh 参数为java Know dummy
System.out.println(executor.exec(" ./mtreceiver.sh start"));
}
}