Java中通过jsch来连接远程服务器执行linux命令

public class CogradientImgFileManager{private static final Logger log = LoggerFactory.getLogger(CogradientImgFileManager.class);private static ChannelExec channelExec;private static Session session = null;private static int timeout = 60000; // 测试代码public static void main(String[] args){try{versouSshUtil("10.8.12.189","jmuser","root1234",22);runCmd("java -version","UTF-8");}catch (Exception e){// TODO Auto-generated catch blocke.printStackTrace();}}/*** 连接远程服务器* @param host ip地址* @param userName 登录名* @param password 密码* @param port 端口* @throws Exception*/public static void versouSshUtil(String host,String userName,String password,int port) throws Exception{log.info("尝试连接到....host:" + host + ",username:" + userName + ",password:" + password + ",port:"+ port);JSch jsch = new JSch(); // 创建JSch对象session = jsch.getSession(userName, host, port); // 根据用户名，主机ip，端口获取一个Session对象session.setPassword(password); // 设置密码Properties config = new Properties();config.put("StrictHostKeyChecking", "no");session.setConfig(config); // 为Session对象设置propertiessession.setTimeout(timeout); // 设置timeout时间session.connect(); // 通过Session建立链接}/*** 在远程服务器上执行命令* @param cmd 要执行的命令字符串* @param charset 编码* @throws Exception*/public static void runCmd(String cmd,String charset) throws Exception{channelExec = (ChannelExec) session.openChannel("exec");channelExec.setCommand(cmd);channelExec.setInputStream(null);channelExec.setErrStream(System.err);channelExec.connect();InputStream in = channelExec.getInputStream();BufferedReader reader = new BufferedReader(new InputStreamReader(in, Charset.forName(charset)));String buf = null;while ((buf = reader.readLine()) != null){System.out.println(buf);}reader.close();channelExec.disconnect();}}