当我发送第二个命令时,我将无法像工作目录那样保留外壳状态。如何保留以前的状态?我尝试使用同一会话,但行不通。
public String sendCommand(String command) {
StringBuilder outputBuffer = new StringBuilder();
try {
Channel channel = sesConnection.openChannel("exec");
((ChannelExec) channel).setCommand(command);
InputStream commandOutput = channel.getInputStream();
channel.connect();
int readByte = commandOutput.read();
while (readByte != 0xffffffff) {
outputBuffer.append((char) readByte);
readByte = commandOutput.read();
}
channel.disconnect();
} catch (IOException ioX) {
logWarning(ioX.getMessage());
return null;
} catch (JSchException jschX) {
logWarning(jschX.getMessage());
return null;
}
return outputBuffer.toString();
}
private SSHManager getSSHInstance() {
String errorMessage = null;
if (sshInstance == null) {
sshInstance = new SSHManager(username, password, host, "", port);
errorMessage = sshInstance.connect();
System.out.println("Instance created");
if (errorMessage != null) {
throw new RuntimeException("Could not create an ssh connection");
}
}
System.out.println("Returning created instance");
return sshInstance;
}
@MessageMapping("/user")
@SendTo("/topic/user")
public UserResponse getResponse(String command) {
SSHManager currInstance = getSSHInstance();
String result = currInstance.sendCommand(command);
return new UserResponse(result);
}
我是我通过标准输入/输出流的SSH终端的代码:
import com.jcraft.jsch.*;
public class Terminal{
public static void main(String[] args){
try{
JSch jsch=new JSch();
String host = "127.0.0.1";
String user = "user";
String password = "pass";
Session session=jsch.getSession(user, host, 5679);
session.setPassword(password);
session.setConfig("StrictHostKeyChecking", "no");
session.connect(10000);
Channel channel=session.openChannel("shell");
channel.setInputStream(System.in);
channel.setOutputStream(System.out);
channel.connect(3*1000);
}
catch(Exception e){
System.out.println(e.getMessage());
}
}
}
要从UI发送命令,我有以下内容:
function sendCommand() {
if (stompClient != null) {
stompClient.send("/app/user", {}, JSON.stringify({'command': $("#command").val()}));
}
}
如果您想实现交互式外壳,则必须使用“ shell”通道,而不是“ exec”通道。 “ Exec”频道用于自动化单个命令。一些参考:
jsch