83

Java中有没有办法处理收到的SIGTERM?

4

3 回答 3

78

是的,您可以使用Runtime.addShutdownHook().

于 2010-06-04T14:56:16.320 回答
57

您可以添加一个关闭挂钩来进行任何清理。

像这样:

public class myjava{
    public static void main(String[] args){
        Runtime.getRuntime().addShutdownHook(new Thread() {
        @Override
            public void run() {
                System.out.println("Inside Add Shutdown Hook");
            }   
        }); 

        System.out.println("Shut Down Hook Attached.");

        System.out.println(5/0);     //Operating system sends SIGFPE to the JVM
                                     //the JVM catches it and constructs a 
                                     //ArithmeticException class, and since you 
                                     //don't catch this with a try/catch, dumps
                                     //it to screen and terminates.  The shutdown
                                     //hook is triggered, doing final cleanup.
    }   
}

然后运行它:

el@apollo:~$ javac myjava.java
el@apollo:~$ java myjava 
Shut Down Hook Attached.
Exception in thread "main" java.lang.ArithmeticException: / by zero
        at myjava.main(myjava.java:11)
Inside Add Shutdown Hook
于 2010-06-04T14:56:31.903 回答
4

在 Java 中处理信号的另一种方法是通过 sun.misc.signal 包。请参阅http://www.ibm.com/developerworks/java/library/i-signalhandling/了解如何使用它。

注意: sun.* 包中的功能也意味着它可能无法在所有操作系统中移植/行为相同。但是您可能想尝试一下。

于 2010-06-07T06:15:32.947 回答