6.7. 编程方式创建@AspectJ代理

除了在配置文件中使用 <aop:config> 或者 <aop:aspectj-autoproxy> 来声明切面。 同样可以通过编程方式来创建代理通知(advise)目标对象。关于Spring AOP API的详细介绍,请参看下一章。这里我们重点介绍自动创建代理。

org.springframework.aop.aspectj.annotation.AspectJProxyFactory 可以为@AspectJ切面的目标对象创建一个代理。该类的基本用法非常简单,示例如下。请参看Javadoc获取更详细的信息。

// 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();