JDK动态代理

import java.lang.reflect.*;

public class JDKProxySupport implements InvocationHandler {

private Object targetObj, proxyObj;

public JDKProxySupport() {

}

public JDKProxySupport(Object target) {

targetObj = target;

// 生成代理

proxyObj = Proxy.newProxyInstance(target.getClass().getClassLoader(), target.getClass().getInterfaces(), this);

}

@Override

public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {

System.out.println("在方法之前做了点事情");

Object obj = method.invoke(targetObj, args);

System.out.println("在方法之后做了点事情");

return obj;

}

public Object getProxyObj() {

return proxyObj;

}

public static void main(String[] args) {

JDKProxySupport ps = new JDKProxySupport(new TestProxy());

TestProxyInterface test = (TestProxyInterface) ps.getProxyObj();

test.doSomething();

}

}