JAVA设计模式（结构型）------ 代理模式

为其他对象提供一种代理以控制对这个对象的访问。

public class Proxy_Main {
    public static void main(String[] args) {
        JDKHanlder jdkHanlder = new JDKHanlder();
        Proxyed demo = (Proxyed) jdkHanlder.bind(new ProxyedImpl());
        demo.proxy();
        System.out.println("------------------------");
        CGLIBInterceptor cglibInterceptor = new CGLIBInterceptor();
        Proxyed proxy = (Proxyed) cglibInterceptor.getProxy(ProxyedImpl.class);
        proxy.proxy();
    }
}

interface Proxyed{
    void proxy();
}
class ProxyedImpl implements Proxyed{
    @Override
    public void proxy() {
        System.out.println("动态代理真实实现");
    }
}
class JDKHanlder implements InvocationHandler{

    private Object target;

    public Object bind(Object target){
        this.target = target;
        return Proxy.newProxyInstance(this.getClass().getClassLoader(),target.getClass().getInterfaces(),this);
    }

    @Override
    public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
        System.out.println("handler...start...");
        method.invoke(target,args);
        System.out.println("handler...end...");
        return null;
    }
}
class CGLIBInterceptor implements MethodInterceptor{
    public Object getProxy(Class cla){
        Enhancer enhancer = new Enhancer();
        enhancer.setSuperclass(cla);
        enhancer.setCallback(this);
        return enhancer.create();
    }
    @Override
    public Object intercept(Object o, Method method, Object[] objects, MethodProxy methodProxy) throws Throwable {
        System.out.println("interceptor...start...");
        methodProxy.invokeSuper(o,objects);
        System.out.println("interceptor...end...");
        return null;
    }
}