java访问ssh和telnet

import java.io.InputStream; import java.io.PrintStream; import org.apache.commons.net.telnet.TelnetClient; public class Shell { private TelnetClient telnet = new TelnetClient(); private InputStream in; private PrintStream out; private char prompt = '$';// 普通用户结束 public Shell(String ip, int port, String user, String password) { try { telnet.connect(ip, port); in = telnet.getInputStream(); out = new PrintStream(telnet.getOutputStream()); // 根据root用户设置结束符 this.prompt = user.equals("root") ? '#' : '>'; login(user, password); } catch (Exception e) { e.printStackTrace(); } } /** * 登录 * * @param user * @param password */ public void login(String user, String password) { // readUntil("login:"); readUntil("login:"); write(user); readUntil("Password:"); write(password); readUntil(prompt + ""); } /** * 读取分析结果 * * @param pattern * @return */ public String readUntil(String pattern) { try { char lastChar = pattern.charAt(pattern.length() - 1); StringBuffer sb = new StringBuffer(); char ch = (char)in.read(); while (true) { sb.append(ch); if (ch == lastChar) { if (sb.toString().endsWith(pattern)) { return sb.toString(); } } ch = (char)in.read(); System.out.print(ch); } } catch (Exception e) { e.printStackTrace(); } return null; } /** * 写操作 * * @param value */ public void write(String value) { try { out.println(value); out.flush(); } catch (Exception e) { e.printStackTrace(); } } /** * 向目标发送命令字符串 * * @param command * @return */ public String sendCommand(String command) { try { write(command); return readUntil(prompt + ""); } catch (Exception e) { e.printStackTrace(); } return null; } /** * 关闭连接 */ public void disconnect() { try { telnet.disconnect(); } catch (Exception e) { e.printStackTrace(); } } public static void main(String[] args) { TelnetClient telnet = new TelnetClient(); try { Shell she =new Shell("136.160.13.69", 8000, "znxj", "znxj1234"); System.out.println(she); System.out.println(she.sendCommand("ACT CNSCHK:,CONFIRM=Y;")); she.disconnect(); }catch (Exception e) { // TODO: handle exception } } }