您需要使用动态代理来实现 SignalHandler 接口。剩下的只是基本的反思。
更新
这是你如何做到的。注意,我省略了需要包装所有这些的 try-catch
Class<?> handlerCl = Class.forName("sun.misc.SignalHandler");
Class<?> signalCl = Class.forName("sun.misc.Signal");
Constructor signalCtor = signalCl.getConstructor(String.class);
Method signalHandle = signalCl.getMethod("handle", signalCl, handlerCl);
// Create a proxy class that implements SignalHandler
Class<?> proxyClass = Proxy.getProxyClass(signalCl.getClassLoader(),
handlerCl);
// This is used by the instance of proxyClass to dispatch method calls
InvocationHandler invHandler = new InvocationHandler()
{
public Object invoke(Object proxy,
Method method, Object[] args) throws Throwable
{
// proxy is the SignalHandler's "this" rederence
// method will be the handle(Signal) method
// args[0] will be an instance of Signal
// If you're using this object for multiple signals, you'll
// you'll need to use the "getName" method to determine which
// signal you have caught.
return null;
}
};
// Get the constructor and create an instance of proxyClass
Constructor<?> proxyCtor = proxyClass.getConstructor(InvocationHandler.class);
Object handler = proxyCtor.newInstance(invHandler);
// Create the signal and call Signal.handle to bind handler to signal
Object signal = signalCtor.newInstance("TERM");
signalHandle.invoke(null, signal, handler);