程序化创建 @AspectJ 代理

除了使用<aop:config>或<aop:aspectj-autoproxy>在配置中声明方面之外，还可以以编程方式创建代理来建议目标对象。有关Spring AOP API的完整详细信息，请参阅下一章。在这里，我们想关注使用@AspectJ方面自动创建代理的能力。

您可以使用org.springframework.aop.aspectj.annotation.AspectJProxyFactory类为目标对象创建一个代理，该代理由一个或多个@AspectJ方面建议。此类的基本用法非常简单，如下例所示

  • Java

  • Kotlin

// create a factory that can generate a proxy for the given target object
AspectJProxyFactory factory = new AspectJProxyFactory(targetObject);

// add an aspect, the class must be an @AspectJ aspect
// you can call this as many times as you need with different aspects
factory.addAspect(SecurityManager.class);

// you can also add existing aspect instances, the type of the object supplied
// must be an @AspectJ aspect
factory.addAspect(usageTracker);

// now get the proxy object...
MyInterfaceType proxy = factory.getProxy();
// create a factory that can generate a proxy for the given target object
val factory = AspectJProxyFactory(targetObject)

// add an aspect, the class must be an @AspectJ aspect
// you can call this as many times as you need with different aspects
factory.addAspect(SecurityManager::class.java)

// you can also add existing aspect instances, the type of the object supplied
// must be an @AspectJ aspect
factory.addAspect(usageTracker)

// now get the proxy object...
val proxy = factory.getProxy<Any>()

有关更多信息，请参阅javadoc。