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();
}
}