我有以下示例代码:
MyMethodBeforeAdviceImpl.java
import org.springframework.aop.MethodBeforeAdvice;
import java.lang.reflect.Method;
public class MyMethodBeforeAdviceImpl implements MethodBeforeAdvice {
@Override
public void before(Method method, Object[] args, Object target) throws Throwable {
System.out.println("MyMethodBeforeAdviceImpl#before");
}
}
MyService.java
public interface MyService {
void serve();
}
MyServiceImpl.java
public class MyServiceImpl implements MyService {
@Override
public void serve() {
System.out.println("MyServiceImpl#serve");
}
}
最后 App.java
import org.springframework.aop.MethodBeforeAdvice;
import org.springframework.aop.framework.ProxyFactory;
import org.springframework.aop.framework.ProxyFactoryBean;
public class App {
public static void main(String[] args) {
final MyServiceImpl myService = new MyServiceImpl();
final MethodBeforeAdvice myMethodBeforeAdvice = new MyMethodBeforeAdviceImpl();
final ProxyFactory proxyFactory = new ProxyFactory();
proxyFactory.addAdvice(myMethodBeforeAdvice);
proxyFactory.setTarget(myService);
MyService proxyServiceFromFactory = (MyService) proxyFactory.getProxy();
proxyServiceFromFactory.serve();
final ProxyFactoryBean proxyFactoryBean = new ProxyFactoryBean();
proxyFactoryBean.addAdvice(myMethodBeforeAdvice);
proxyFactoryBean.setTarget(myService);
MyService proxyServiceFromFactoryBean = (MyService) proxyFactoryBean.getObject();
proxyServiceFromFactoryBean.serve();
System.exit(-1);
}
}
主要方法的输出将是:
MyMethodBeforeAdviceImpl#before
MyServiceImpl#serve
MyMethodBeforeAdviceImpl#before
MyServiceImpl#serve
就这个非常小的例子而言,它们完全符合相同的目的。 ProxyFactory documentation州:
AOP代理的工厂用于程序化使用,而不是通过 bean工厂中的声明性设置。这个类提供了一种简单的方法 在自定义用户代码中获取和配置AOP代理实例。
但在我看来,您可以将ProxyFactoryBean用于同一目的吗?
这两个类如何用于不同的目的?
答案 0 :(得分:0)
ProxyFactory独立于Spring的IoC容器。 ProxyFactoryBean将Spring AOP与Spring的IoC容器结合在一起。