java操作telnet遠程登入

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import java.io.IOException;import java.io.InputStream;import java.io.InputStreamReader;import java.io.OutputStream;import java.net.SocketException;import org.apache.commons.net.telnet.TelnetClient;public class Client {    public static void main(String[] args){        try {            TelnetClient tc = new TelnetClient();            tc.connect("192.168.100.8", 23);            InputStream in = tc.getInputStream();            OutputStream os = tc.getOutputStream();                        System.out.print(readUntil(":", in));                        writeUtil("root", os);            System.out.print(readUntil(":", in));                        writeUtil("freewificom", os);            System.out.print(readUntil("[email protected]:~#", in));                                    writeUtil("ls -l / ", os);            System.out.print(readUntil("[email protected]:~#", in));                        writeUtil("ip addr ", os);            System.out.print(readUntil("[email protected]:~#", in));                        writeUtil("ip route ", os);            System.out.print(readUntil("[email protected]:~#", in));                    } catch (SocketException e) {            e.printStackTrace();        } catch (IOException e) {            e.printStackTrace();        }            }        /**     * 寫入命令方法     * @param cmd     * @param os     */    public static void writeUtil(String cmd, OutputStream os){        try {            cmd = cmd + "\n";            os.write(cmd.getBytes());            os.flush();        } catch (IOException e) {            e.printStackTrace();        }            }        /**     * 讀到指定位置,不在向下讀     * @param endFlag     * @param in     * @return     */    public static String readUntil(String endFlag, InputStream in) {                InputStreamReader isr = new InputStreamReader(in);                char[] charBytes = new char[1024];        int n = 0;        boolean flag = false;        String str = "";        try {            while((n = isr.read(charBytes)) != -1){                for(int i=0; i< n; i++){                    char c = (char)charBytes[i];                    str += c;                    //當拼接的字串以指定的字串結尾時,不在繼續讀                    if(str.endsWith(endFlag)){                        flag = true;                        break;                    }                }                if(flag){                    break;                }            }        } catch (IOException e) {            e.printStackTrace();        }                return str;    }}

 

java操作telnet遠程登入