Proxy范例使用

Proxy实例使用
1.总共有4个类,1个接口类,1个实现接口的类,1个实现invocationHandler接口的类,1个测试类.

package com.meiyoudao.invocationhandle;public interface SayClass {void say();}

package com.meiyoudao.invocationhandle;public class SayClassImpl implements SayClass {public void say() {System.out.println("**************hello***************");}}

package com.meiyoudao.invocationhandle;import java.lang.reflect.InvocationHandler;import java.lang.reflect.Method;public class LogHandle implements InvocationHandler {private Object target = null;public LogHandle(Object obj) {this.target = obj;}public Object invoke(Object proxy, Method method, Object[] args)throws Throwable {System.out.println("Log**************");Object o = method.invoke(target, args);System.out.println("****************Log");return o;}}

package com.meiyoudao.invocationhandle;import java.lang.reflect.Proxy;public class Test {/** * @param args */public static void main(String[] args) {SayClass say = new SayClassImpl();LogHandle log = new LogHandle(say);SayClass clz = (SayClass) Proxy.newProxyInstance(say.getClass().getClassLoader(), new Class[]{SayClass.class}, log);clz.say();}}