try {
((ChannelExec)channel).setCommand(command);
InputStream in=channel.getInputStream();
channel.setInputStream(null);
((ChannelExec)channel).setErrStream(System.err);
channel.connect();
res=FileUtil.readInputStreamToString(in, "UTF-8");
in=null;
// log.info("命令:"+command+"执行完毕\n");
// log.info("命令执行结果为:\n"+res);
} catch (IOException e) {