Java中是否有办法处理收到的SIGTERM?
答案 0 :(得分:55)
是的,您可以使用Runtime.addShutdownHook()
注册关机挂钩。
答案 1 :(得分:36)
您可以添加shutdown hook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
答案 2 :(得分:5)
在Java中处理信号的另一种方法是通过sun.misc.signal包。有关如何使用它的信息,请参阅http://www.ibm.com/developerworks/java/library/i-signalhandling/。
注意: sun。*包中的功能也意味着它可能在所有操作系统中都不可移植/表现相同。但你可能想尝试一下。