JDK和Cglib动态代理小demo

一：JDK动态代理

package com.zkn.newlearn.proxyhandler;

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

import org.omg.CORBA.portable.InvokeHandler;

/**
 * 
 * @author zkn
 * 此代理类 代理实现接口的类
 *
 */

public class JdkProxyHandler implements InvocationHandler {

	private Object targetObject;
	
	public Object createObject(Object obj){
		this.targetObject = obj;
		return Proxy.newProxyInstance(targetObject.getClass().getClassLoader(), 
				targetObject.getClass().getInterfaces(), this);
	}
	
	public Object invoke(Object proxy, Method method, Object[] args)
			throws Throwable {
		
		return method.invoke(targetObject, args);
	}
	
}

 

2：CGLIB动态代理

package com.zkn.newlearn.proxyhandler;

import java.lang.reflect.Method;

import net.sf.cglib.proxy.Enhancer;
import net.sf.cglib.proxy.MethodInterceptor;
import net.sf.cglib.proxy.MethodProxy;

/**
 * 
 * @author zkn
 *	代理类不能为final修饰的类
 *	此代理类 代理的是没有实现接口的类
 */

public class CglibProxyHandler implements MethodInterceptor{

	/**
	 * 代理对象
	 */
	private Object targetObj;
	
	public Object createObject(Object obj){
		this.targetObj = obj;
		Enhancer eh = new Enhancer();
		eh.setSuperclass(this.targetObj.getClass());
		eh.setCallback(this);
		return eh.create();
	}
	
	public Object intercept(Object obj, Method arg1, Object[] arg2,
			MethodProxy proxy) throws Throwable {
		
		Object object = proxy.invoke(this.targetObj, arg2);//这里如果换成obj 会陷入死循环中
		return object;
	}
	
}