cglib实现动态代理构建带参数的代理实例：

package com.carl.test.proxy.cglib;import net.sf.cglib.proxy.Enhancer;
import net.sf.cglib.proxy.MethodInterceptor;
import net.sf.cglib.proxy.MethodProxy;
import java.lang.reflect.Method;/*** Created by Carl on 14-12-30.*/
public class CglibProxy implements MethodInterceptor{/*** 创建代理对象方法** @param target        代理对象* @param args          对应的构造器参数类型**                          例：有构造器如下*                          public Person(name,age){...} name为String.class age为int.class*                          写入name的类型与age的类型**                          则：new Class[]{String.class,int.class}** @param argsValue     对应的构造器参数值**                          例:如此创建对象 new Person("name",23) 用以下方式传入：new Object[]{"name",23}** @param <T>           <泛型方法>* @return              返回跟代理对象类型*/public <T> T getInstance(T target,Class[] args,Object[] argsValue){Enhancer enhancer = new Enhancer();enhancer.setSuperclass(target.getClass());enhancer.setCallback(this);return (T) enhancer.create(args,argsValue);}/*** 创建代理对象方法** @param target        代理对象* @param <T>           <泛型方法>* @return              返回跟代理对象类型*/public <T> T getInstance(T target){Enhancer enhancer = new Enhancer();enhancer.setSuperclass(target.getClass());enhancer.setCallback(this);return (T) enhancer.create();}@Overridepublic Object intercept(Object o, Method method, Object[] objects, MethodProxy methodProxy) throws Throwable {Object result = null;try{System.out.println("Before "+method.getName()+" ..");result = methodProxy.invokeSuper(o,objects);System.out.println("End "+method.getName()+" ..");}catch(Exception e){System.out.println("Errod "+method.getName()+" ..");}return result;}
}

需引入 cglib-2.1.3.jar 和 asm.jar