WindowShell for Telnet

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package com.wz.test;import java.io.IOException;import java.io.InputStream;import java.io.PrintStream;import org.apache.commons.net.telnet.TelnetClient;public class WindowShell {        private TelnetClient telnet;    private InputStream in;     // 输入流,接收返回信息      private PrintStream out;    // 向服务器写入 命令      private char prompt = '>';   //结束标识字符      private String pwdString;          public WindowShell(String termtype,String ip, int port, String user, String password, int timeout) throws Exception{          telnet = new TelnetClient(termtype);        telnet.setConnectTimeout(timeout);        telnet.connect(ip, port);        in = telnet.getInputStream();          out = new PrintStream(telnet.getOutputStream());        this.pwdString = "password";        login(user, password);    }            /**      * 登录到目标主机      * @param ip      * @param port      * @param username      * @param password      */      public void login(String user, String password){          readUntil("login:");          write(user);          readUntil(pwdString+":");          write(password);          readUntil(prompt + "");    }            /**      * 读取分析结果      *       * @param pattern   匹配到该字符串时返回结果      * @return      */      public String readUntil(String pattern) {      StringBuffer sb = new StringBuffer();    char lastChar = pattern.charAt(pattern.length() - 1);          try {              char ch = (char) in.read();              while (ch != -1) {sb.append(ch);if (ch == lastChar && sb.toString().endsWith(pattern)) {return sb.toString();}ch = (char) in.read();}         } catch (Exception e) {              e.printStackTrace();          }          return sb.toString();      }           /**     * 写操作     * @Title  write      * @author  Administrator     * @param value     * @return  void     */    public void write(String value) {          try {              out.println(value);              out.flush();          } catch (Exception e) {              e.printStackTrace();          }      }            /**      * 发送命令,返回执行结果      *       * @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 {              if(telnet != null) {            telnet.disconnect();              }        } catch (IOException e) {              e.printStackTrace();          }      }        public static void main(String[] args) {System.out.println("启动Telnet...");String ip = "192.168.1.118";int port = 23;String user = "Administrator";String password = "wz";int timeout = 5000;        try {          WindowShell telnet = new WindowShell("VT220",ip,port,user,password,timeout);        String rs = telnet.sendCommand("ipconfig");              System.out.println(new String(rs.getBytes("ISO-8859-1"),"GBK"));            telnet.disConnect();        } catch (Exception e) {              e.printStackTrace();          }      }        }
commons-net
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