获取在后台运行的Java Runtime Process [英] Get Java Runtime Process running in background

问题描述

我正在编写一个Java应用程序，在该应用程序中，我需要在运行的应用程序的整个生命周期中在后台运行进程.

I'm writing a java application where I require to run a process in background throughout the lifetime of the running application.

这就是我所拥有的:

Runtime.getRuntime().exec("..(this works ok)..");
Process p = Runtime.getRuntime().exec("..(this works ok)..");
InputStream is = p.getInputStream();
InputStreamReader isr = new InputStreamReader(is);
BufferedReader br = new BufferedReader(isr);

所以，基本上我会打印出每个br.readLine().

So, basically I print out every br.readLine().

我不确定的事情是如何在应用程序中实现此代码，因为无论我将它放在哪里(与Runnable一起使用)，它都会阻止其他代码运行(如预期的那样).

The thing that I'm not sure about is how to implement this code in my application because wherever I put it (with Runnable), it blocks other code from running (as expected).

我已经使用了Runnable，Thread，SwingUtilities，但没有任何效果...

I've used Runnable, Thread, SwingUtilities, and nothing works...

任何帮助将不胜感激:)

Any help would be greatly appreciated :)

推荐答案

您可以在线程中读取输入流(即br.readLine()).这样，它始终在后台运行.

You can read the input stream(i.e br.readLine()) in a thread. That way, it's always running in the background.

我们在应用程序中实现此方法的方式大致如下:

The way we have implemented this in our application is roughly like below:

业务逻辑，即您调用脚本的位置:

Business logic, i.e the place where you invoke the script:

// Did something...

InvokeScript.execute("sh blah.sh"); // Invoke the background process here. The arguments are taken in processed and executed.

// Continue doing what you were doing

InvokeScript.execute()如下所示:

InvokeScript.execute() will look something like below:

InvokeScript.execute(String args) {
// Process args, convert them to command array or whatever is comfortable

Process p = Runtime.getRuntime().exec(cmdArray);

ReaderThread rt = new ReaderThread(p.getInputStream());
rt.start();
}

ReaderThread应该继续读取您开始的进程的输出，只要它持续即可.

ReaderThread should continue reading the output of the process you have started, as long as it lasts.

请注意，以上只是伪代码.

Please note that the above is only a pseudo code.

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