我在Java jsch中遇到问题。我已经打开了一个Shell通道,并且有要执行的命令以及要从Shell读取的命令列表。
但是在该命令列表中,有一个命令需要在外壳中向下滚动以显示到结束为止。
我正在努力为该命令实现此自动滚动条。
在我的代码中,我做了什么:
ChannelShell channelShell = (ChannelShell) session.openChannel("shell");
OutputStream inputstream_for_the_channel = channelShell.getOutputStream();
InputStream outputstream_from_the_channel = channelShell.getInputStream();
BufferedReader reader = new BufferedReader(new InputStreamReader(outputstream_from_the_channel));
PrintStream commander = new PrintStream(inputstream_for_the_channel, true);
channelShell.connect();
if (!commands.get(0).equals("show system information | match \"System Name\"")) {
commands.add(0, "show system information | match \"System Name\"");
}
String readString = "";
String line;
int index = 0;
for (String cmd : commands) {
System.out.println(cmd);
commander.println(cmd);
try {
Thread.sleep(commandsSleep);
} catch (Exception ee) {
}
while ((line = reader.readLine()) != null)
{
if (cmd.equals("admin display-config")) {
commander.println("");
}
GuiApp.textAreaLog.append("\n"+ ++index + " : " + line);
System.out.println(index + " : " + line);
readString += (line+"\n");
}
}
if (routerType.equals("nokia")) {
commander.println("logout");
System.out.println("logout");
try {
Thread.sleep(commandsSleep);
} catch (Exception ee) {
}
} else if (routerType.equals("linux")){
commander.println("exit");
}
commander.close();
channelShell.disconnect();
try {
Thread.sleep(commandsSleep);
} catch (Exception ee) {
}
return readString;
在该部分:
while ((line = reader.readLine()) != null)
{
if (cmd.equals("admin display-config")) {
commander.println("");
}
GuiApp.textAreaLog.append("\n"+ ++index + " : " + line);
System.out.println(index + " : " + line);
readString += (line+"\n");
}
在这里我试图实现一个While循环,以读取阅读器直至其为null,并在命令程序中添加带有“”的printl,以尝试将该有问题的命令进一步向下滚动。
我设法做的是在读缓冲区中插入一个时间限制。
for (String cmd : commands) {
GuiApp.textAreaLog.append("\n"+"Running Command : " + cmd);
commander.println(cmd);
System.out.println(cmd);
if (cmd.equals("admin display-config")) {
commandDelay = commandsSleep*10;
}else{
commandDelay = commandsSleep;
}
line = reader.readLine();
while (line!=null)
{
System.out.println(++index + " : " + line);
readString += (line+"\n");
try {
line = timeLimiter.callWithTimeout(reader::readLine, commandsSleep, TimeUnit.MILLISECONDS, true);
} catch (Exception e) {
e.printStackTrace();
break;
}
}
try {
Thread.sleep(commandDelay);
} catch (Exception e) {
//e.printStackTrace();
}
GuiApp.textAreaLog.append("\n"+"Comando executado com sucesso");
}