我需要一些指导。不确定我是否走上了正确的道路,但我认为是的。我正在尝试创建一个telnet java程序,它将连接到客户端计算机,执行单个命令,然后断开连接。当我连接到Linux机器或我的路由器时,我能够使程序工作并将InputStream读取到文本字段中(用于测试目的)。但当我连接到Windows机器或其他客户端计算机时,它就无法正常工作。它会读取一些随机字符,然后锁定。
以下是我的代码。我已经看到了其他代码示例以及来自Apache等的API。我真的很想看看是否可以仅使用Java套接字使其正常工作。
以下是我的代码。我已经看到了其他代码示例以及来自Apache等的API。我真的很想看看是否可以仅使用Java套接字使其正常工作。
public class TestSockets extends JFrame implements ActionListener {
/**
* @param args
*/
private String USER = "User";
private String PASS = "Password01";
private final static String CMD = "exit\r\n";
private static Socket telnet = null;
private PrintWriter writer = null;
private static InputStream reader = null;
private String host = "192.168.1.1";
private int port = 23;
TextArea javatext;
public static void main(String[] args) {
// TODO Auto-generated method stub
new TestSockets().setVisible(true);
}
private TestSockets() {
super("Testing Buttons");
//Set JFrame size
setSize(500, 600);
//Gives JFrame a location
setLocation(100, 100);
//set layout
setLayout(new FlowLayout());
javatext = new TextArea(25, 65);
add(javatext);
//Ask for window decorations provided by the look and feel.
JFrame.setDefaultLookAndFeelDecorated(true);
JButton button3 = new JButton("Run Program");
button3.addActionListener(this);
add(button3);
}
@Override
public void actionPerformed(ActionEvent arg0) {
// TODO Auto-generated method stub
try {
telnet = new Socket(host, port);
telnet.setKeepAlive(true);
//reader = telnet.getInputStream();
writer = new PrintWriter(telnet.getOutputStream());
reader = telnet.getInputStream();
//out = telnet.getOutputStream();
//Process p = Runtime.getRuntime().exec("telnet " + server.toString(), null, null);
//DataOutputStream os = new DataOutputStream(p.getOutputStream());
//DataInputStream in = new DataInputStream(p.getInputStream());
StringBuilder sb = new StringBuilder();
byte[] buffer = new byte[4096]; // Read 4K characters at a time
int len; // How many chars read each time
while ((len = reader.read(buffer)) != -1) {
String readchar = new String(buffer, 0, len);
sb.append(readchar + "\n");
System.out.println(readchar);
javatext.append(readchar);
if (readchar.endsWith("login: ")) {
writer.print(USER + "\r\n");
writer.flush();
}
if (readchar.endsWith("Password: ")) {
writer.print(PASS + "\r\n");
writer.flush();
}
if (readchar.endsWith("password: ")) {
writer.print(PASS + "\r\n");
writer.flush();
}
if (readchar.endsWith("# ")) {
writer.print(CMD);
writer.flush();
}
if (readchar.endsWith("# ")) {
writer.print(CMD);
writer.flush();
}
}
} catch (SocketException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}