CglibProxy(Cglib代理模式)

public class ProductDao {
    public void save(){
        System.out.println("保存商品...");
    }

    public void update(){
        System.out.println("修改商品...");
    }

    public void delete(){
        System.out.println("删除商品...");
    }

    public void find(){
        System.out.println("查询商品...");
    }
}

public class MyCglibProxy implements MethodInterceptor{

    private ProductDao productDao;

    public MyCglibProxy(ProductDao productDao){
        this.productDao = productDao;
    }

    public Object createProxy(){
        // 1.创建核心类
        Enhancer enhancer = new Enhancer();
        // 2.设置父类
        enhancer.setSuperclass(productDao.getClass());
        // 3.设置回调
        enhancer.setCallback(this);
        // 4.生成代理
        Object proxy = enhancer.create();
        return proxy;
    }

    public Object intercept(Object proxy, Method method, Object[] args, MethodProxy methodProxy) throws Throwable {
        if("save".equals(method.getName())){
            System.out.println("权限校验===================");
            return methodProxy.invokeSuper(proxy,args);
        }
        return methodProxy.invokeSuper(proxy,args);
    }
}

public class SpringDemo2 {

    @Test
    public void demo1(){
        ProductDao productDao = new ProductDao();

        ProductDao proxy = (ProductDao) new MyCglibProxy(productDao).createProxy();
        proxy.save();
        proxy.update();
        proxy.delete();
        proxy.find();
    }
}