InvocationHandler 位于 JDK 反射包下,其作用是在实现 JDK 动态代理。
package java.lang.reflect; /** * InvocationHandler is the interface implemented by the invocation handler of a proxy instance. */ public interface InvocationHandler { /** * Processes a method invocation on a proxy instance and returns the result. */ public Object invoke(Object proxy, Method method, Object[] args) throws Throwable; }