如何获取生成的java进程的PID

问题描述：

我正在编写几个java程序，并且在完成我想做的任何事情后，需要在单独的JVM中终止/清理。为此，我需要获取我正在创建的java进程的PID。

I am writing several java programs and will need to kill off/clean up in a seperate JVM after I am done with whatever I wanted to do. For this, I will need to get the PID of the java process which I am creating.

答

jps -l 适用于Windows和Unix。您可以使用 Runtime.getRuntime（）。exec 从java程序中调用此命令。 jps -l 的示例输出如下：

jps -l works both on Windows and Unix. You can invoke this command from your java program using Runtime.getRuntime().exec. Sample output of jps -l is as follows

9412 foo.bar.ClassName
9300 sun.tools.jps.Jps

你可能需要解析这个和然后检查完全限定的名称，然后从相应的行获取pid。

You might need to parse this and then check for the fully qualified name and then get the pid from the corresponding line.

private static void executeJps() throws IOException {
    Process p = Runtime.getRuntime().exec("jps -l");
    String line = null;
    BufferedReader in = new BufferedReader(new InputStreamReader(
                                                p.getInputStream(), "UTF-8"));

    while ((line = in.readLine()) != null) {
        String [] javaProcess = line.split(" ");
        if (javaProcess.length > 1 && javaProcess[1].endsWith("ClassName")) {
            System.out.println("pid => " + javaProcess[0]);
            System.out.println("Fully Qualified Class Name => " + 
                                           javaProcess[1]);
        }
    }
}

如何获取生成的java进程的PID

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