用另一个方面来包装春季方面

问题描述

我已将两个方面声明为foo& bar在功能runFunc上，我想捕获运行功能runcFunc&所花费的时间. Foo中的Bar，但它仅捕获runFunc的时间. Bar独立运行.

I've declared two aspects as foo & bar over a function runFunc and I want to capture time taken to run the function runcFunc & Bar in Foo, but it is capturing the time only for runFunc. Bar is running independently.

我希望如果在函数上放置两个注释，则第一个注释应包装第二个注释，第二个注释应包装函数runfunc.我该如何实现?

I want that If I put two annotation over a function, the 1st annotation should wrap the 2nd annotation and the 2nd one should wrap the function runfunc. How can I achieve that?

推荐答案

事实证明，方面可以像包装函数一样容易地包装其他方面.

It turns out aspect can wrap other aspects just as easily as they can wrap a function.

以下代码有效.

@Target({ElementType.METHOD, ElementType.TYPE})
@Retention(value = RetentionPolicy.RUNTIME)
public @interface Foo {}


@Target({ElementType.METHOD, ElementType.TYPE})
@Retention(value = RetentionPolicy.RUNTIME)
public @interface Bar {}


@Aspect
@Component
public class A {

    @Around("@annotation( foo )")
    public void func1(final ProceedingJoinPoint pjp, Foo foo) throws Throwable {
        System.out.println("foo start");
        pjp.proceed();
        System.out.println("foo end");
    }
}


@Aspect
@Component
public class B {

    @Around("@annotation( bar )")
    public void func2(final ProceedingJoinPoint pjp, Bar bar) throws Throwable {
        System.out.println("bar start");
        pjp.proceed();
        System.out.println("bar end");
    }
}

以下代码:

@Foo
@Bar
public void runFunc(){
    System.out.println("Inside Run.runFunc");
}

输出以下内容:

foo start
bar start
Inside Run.runFunc
bar end
foo end

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