Spring AOP - 为什么我需要aspectjweaver？ [英] Spring AOP - why do i need aspectjweaver?

问题描述

我用Spring AOP写了一个非常简单的Aspect。它有效，但我在理解真正发生的事情时遇到了一些问题。我不明白为什么我要添加aspectjweaver.jar？ Spring-AOP文档明确指出，只要我使用Spring-AOP，我就不需要aspectj编译器或weaver：

i wrote a very simple Aspect with Spring AOP. It works, but i have some problems understanding what is really going on. I don't understand why i have to add the aspectjweaver.jar? The Spring-AOP documentation clearly states that i don't need aspectj compiler or weaver as long as i just use Spring-AOP:

AOP运行时仍然是纯Spring AOP，并且不依赖于AspectJ编译器或weaver。

The AOP runtime is still pure Spring AOP though, and there is no dependency on the AspectJ compiler or weaver.

我的配置如下所示：

<aop:aspectj-autoproxy />

@Aspect
@Service
public class RemoteInvocationAspect {

    @Before("execution(* at.test.mypackage.*.*(..))")
    public void test() {
        System.out.println("test");
    }
    ...

我也试过XML配置，没有改变一切。也许我可以放手，但我真的想了解为什么使用aspectj-weaver？如果我不在maven中添加依赖项，我会得到 java.lang.ClassNotFoundException：org.aspectj.weaver.reflect.ReflectionWorld $ ReflectionWorldException

I also tried XML configuration, didn't change anything though. Maybe i could just let it go, but i really would like to understand why aspectj-weaver is used? If i don't add the dependency in maven i get java.lang.ClassNotFoundException: org.aspectj.weaver.reflect.ReflectionWorld$ReflectionWorldException

推荐答案

Spring AOP实现我认为重用了aspectj-weaver中的一些类。它仍然使用动态代理 - 不进行字节代码修改。

Spring AOP implementation I think is reusing some classes from the aspectj-weaver. It still uses dynamic proxies - doesn't do byte code modification.

以下评论可能会澄清。

在这种情况下，Spring没有使用AspectJ编织器。它只是
重用了aspectjweaver.jar中的一些类。

Spring isn't using the AspectJ weaver in this case. It is simply reusing some of the classes from aspectjweaver.jar.

-Ramnivas

-Ramnivas

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