我正在使用JSch在远程linux服务器上运行sudo命令。
下面的示例显示了尝试cd进入目录并返回内容的尝试。我正在测试myDirectory
不存在的用例。
public static List<String> executeExecCommand() {
try {
Session session = new JSch().getSession() // paraphrasing for brevity
Channel channel - session.openChannel("exec");
String command = "echo \"password\" | sudo -S bash -c \"cd myDirectory/ && ls -la \"";
((ChannelExec(channel).setCommand(command);
channel.setInputStream(null);
((ChannelExec(channel).setErrStream(System.err);
InputStream input = channel.getInputStream();
channel.connect();
List<String> output = new ArrayList<>();
try {
InputStreamReader inputReader = new InputStreamReader(input);
BufferedReader bufferedReader = new BufferedReader(InputReader);
String line = null;
while (true) {
while ((line = bufferedReader.readLine()) != null) {
output.add(line);
System.out.println("here is a line " + line);
}
if (channel.isClosed()( {
if (input.available() > 0) {
continue;
}
logger.DEBUG("exit status " + channel.getExitStatus());
break;
}
bufferedReader.close();
inputReader.close();
} catch (IOException ex) {
ex.printStackTrace();
}
channel.disconnect();
session.disconnect();
return output;
} catch (Throwable t) {
throw new JSchException("executeExecCommand : unable to establish SSH session " + t.toString());
}
}
从intelliJ中的单元测试运行时,我得到的输出如下:
.
.
[sudo] password for username : bash: line 0: cd: myDirectory/: No such file or directory
2019-01-03 10:40:18 DEBUG [main] <Filename>:<linenumber> - exit status: 1
.
.
这是预料之中的,但是我的问题是我如何以编程方式访问[sudo]输出行?我看过ErrorStream,但是其中不包含在intelliJ的输出控制台上输出和显示的文本。
请注意,System.out.println("here is a line " + line);
行未执行。
还请注意,从命令提示符运行时,不会输出[sudo]行:即“ mvn test”
那么,我该如何以编程方式访问[sudo]输出行?
答案 0 :(得分:-1)
使用@MartinPrikil的解决方案How to read JSch command output?(但是此解决方案具有无限循环)
我接受了他的一些代码,并将其添加到代码中,如下所示:这使我可以通过变量“ errorBufferedReader”以编程方式访问错误文本
((ChannelExec(channel).setCommand(command);
channel.setInputStream(null);
((ChannelExec(channel).setErrStream(System.err);
InputStream input = channel.getInputStream();
InputStream error = channel.getExtInputStream();
channel.connect();
List<String> output = new ArrayList<>();
List<String> errorOutput = new ArrayList<>();
try {
InputStreamReader inputReader = new InputStreamReader(input);
BufferedReader bufferedReader = new BufferedReader(inputReader);
InputStreamReader errorReader = new InputStreamReader(error);
BufferedReader errorBufferedReader = new BufferedReader(errorReader);
String line = null;
while (true) {
while ((line = bufferedReader.readLine()) != null) {
output.add(line);
System.out.println("here is a line " + line);
}
while ((line = errorBufferedReader.readLine()) != null) {
Output.add(line);
System.out.println("here is an error line " + line);
}
if (channel.isClosed()( { etc etc }