SSH连接工具类

public class SshConnTool {

	private Connection conn;

	private String ipAddr;
	private String charset = Charset.defaultCharset().toString();
	private String userName;
	private String password;

	public SshConnTool(String ipAddr, String userName, String password,
			String charset) {
		this.ipAddr = ipAddr;
		this.userName = userName;
		this.password = password;
		if (charset != null) {
			this.charset = charset;
		}
	}

	/**
	 * 登录远程Linux主机
	 * 
	 * @return
	 * @throws IOException
	 */
	public boolean login() throws IOException {
		conn = new Connection(ipAddr);
		conn.connect(); // 连接
		return conn.authenticateWithPassword(userName, password); // 认证
	}

	/**
	 * 执行Shell脚本或命令
	 * 
	 * @param cmds
	 *            命令行序列
	 * @return
	 */
	public String exec(String cmds) {
		InputStream in = null;
		String result = "";
		try {
			if (this.login()) {
				Session session = conn.openSession(); // 打开一个会话
				session.execCommand(cmds);
				in = session.getStdout();
				result = this.processStdout(in, this.charset);
				conn.close();
			}
		} catch (IOException e1) {
			e1.printStackTrace();
		}
		return result;
	}

	/**
	 * 解析流获取字符串信息
	 * 
	 * @param in
	 *            输入流对象
	 * @param charset
	 *            字符集
	 * @return
	 */
	public String processStdout(InputStream in, String charset) {
		byte[] buf = new byte[1024];
		StringBuffer sb = new StringBuffer();
		try {
			while (in.read(buf) != -1) {
				sb.append(new String(buf, charset));
			}
		} catch (IOException e) {
			e.printStackTrace();
		}
		return sb.toString();
	}
	
	public Connection getConn() {
		return conn;
	}

	public void setConn(Connection conn) {
		this.conn = conn;
	}
}