TimingInvocationHandler.java

package com.codekk.java.test.dynamicproxy;

import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;

/**
 * InvocationHandler to timing proxy class
 * 
 * @author trinea@codekk.com
 */
public class TimingInvocationHandler implements InvocationHandler {

    private Object target;

    public TimingInvocationHandler() {}

    public TimingInvocationHandler(Object target) {
        this.target = target;
    }

    @Override
    public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
        long start = System.currentTimeMillis();
        Object obj = method.invoke(target, args);
        System.out.println(method.getName() + " cost time is:" + (System.currentTimeMillis() - start));
        return obj;
    }
}