当我使用公钥运行grep for grep时，它失败并出现以下错误：
Exception in thread "main" com.jcraft.jsch.JSchException: failed to send channel request
当我使用我的用户名密码运行相同的东西时它工作正常
以下是我的连接和运行命令方法
public boolean validateUser(String host) throws Exception {
logger.info("Validating user " + this.getUserId());
String user = getUserId();
JSch jsch = new JSch();
try {
session = jsch.getSession(user, host, 22);
session.setConfig("PreferredAuthentications", "publickey");
jsch.setKnownHosts("~/.ssh/known_hosts");
jsch.addIdentity("~/.ssh/id_rsa");
session.setConfig("StrictHostKeyChecking", "no");
session.connect(30000);
session.connect();
return true;
} catch (Exception e) {
e.printStackTrace();
logger.info("Exception" + e);
throw e;
}
}
public StringBuilder runCmd(String cmnd) throws JSchException, IOException {
logger.info("connecting to server");
Channel channel = this.session.openChannel("exec");
((ChannelExec) channel).setCommand(cmnd);
channel.setXForwarding(true);
((ChannelExec) channel).setOutputStream(System.out);
((ChannelExec) channel).setErrStream(System.err);
InputStream in = channel.getInputStream();
channel.connect(500000);
channel.setInputStream(System.in);
BufferedInputStream bufIn = new BufferedInputStream(in);
StringBuilder sb = new StringBuilder();
byte[] tmp = new byte[1024];
while (true) {
while (bufIn.available() > 0) {
int i = bufIn.read(tmp, 0, 1024);
if (i < 0)
break;
sb.append((new String(tmp, 0, i)));
}
logger.info("channelStatus is " + channel.isClosed());
logger.info("Exit status = " + channel.getExitStatus());
if (channel.isClosed()) {
bufIn.close();
break;
}
while (channel.getExitStatus() == -1){
try{Thread.sleep(1000);}catch(Exception e){System.out.println(e);}
}
logger.info("Closing unix connection");
}
channel.disconnect();
return sb;
}