AOP2-五種AOP方法的正常和例外是否執行 (Spring3.x 十九)

上一篇的AOP只有after和before，其實它還有after-returning、after-throwing、around這三個較重要的功能，一樣也是測例外和正常的情形

※XML設定

applicationContext.xml

<aop:config>
    <aop:pointcut expression="execution(public void aop.AOP.A())" id="aaa" />
    <aop:pointcut expression="execution(public void aop.AOP.B(String))" id="bbb" />
    <aop:pointcut expression="execution(public String aop.AOP.C())" id="ccc" />
    <aop:pointcut expression="execution(public String aop.AOP.D(String))" id="ddd" />
    
    <aop:aspect ref="beforeAfter">
        <!-- <aop:after-returning method="after" pointcut-ref="aaa" /> -->
        <!-- <aop:after-returning method="after" pointcut-ref="bbb" /> -->
        <!-- <aop:after-returning method="after" pointcut-ref="ccc" /> -->
        <!-- <aop:after-returning method="after" pointcut-ref="ddd" /> -->
    
        <!-- <aop:after-throwing method="after" pointcut-ref="aaa" /> -->
        <!-- <aop:after-throwing method="after" pointcut-ref="bbb" /> -->
        <!-- <aop:after-throwing method="after" pointcut-ref="ccc" /> -->
        <!-- <aop:after-throwing method="after" pointcut-ref="ddd" /> -->
    
        <aop:around method="after" pointcut-ref="aaa" />
        <aop:around method="after" pointcut-ref="bbb" />
        <aop:around method="after" pointcut-ref="ccc" />
        <aop:around method="after" pointcut-ref="ddd" />
    </aop:aspect>
</aop:config>

※整理成一張表

before/after	程式碼正常	throws	try/catch	無throws和try/catch
會執行AOP	✔	✔	✔	✔
會執行Advice	✔	✔	✔	✔
繼續往下執行	✔	✔	✔
after-returning	程式碼正常	throws	try/catch	無throws和try/catch
會執行AOP	✔		✔
會執行Advice	✔	✔	✔	✔
繼續往下執行	✔	✔	✔
after-throwing	程式碼正常	throws	try/catch	無throws和try/catch
會執行AOP		✔		✔
會執行Advice	✔	✔	✔	✔
繼續往下執行	✔	✔	✔
around	程式碼正常	throws	try/catch	無throws和try/catch
會執行AOP	✔	✔	✔	✔
會執行Advice
繼續往下執行	✔	✔	✔	✔

※Annotation設定

因為不要藕合，所以AOP.java不知道BeforeAfter.java的存在，所以只要在BeforeAfter增加即可

applicationContext.xml

<context:component-scan base-package="\" />
<aop:aspectj-autoproxy/>
<bean class="org.springframework.aop.aspectj.annotation.AnnotationAwareAspectJAutoProxyCreator" />

※第2和第3行擇其一即可

@Named
@Aspect
public class BeforeAfter {
    @Before("execution(public * aop.AOP.*(..))")
    public void before() {
        System.out.println("之前執行！");
    }
    
    @After("execution(public * aop.AOP.*(..))")
    public void after() {
        System.out.println("之後執行！");
    }
}

@Named
@Aspect
public class BeforeAfter {
    @Pointcut("execution(public * aop.AOP.*(..))")
    private void shareAOP(){}
    
    @Before("BeforeAfter.shareAOP()")
    public void before() {
        System.out.println("之前執行！");
    }
    
    @After("BeforeAfter.shareAOP()")
    public void after() {
        System.out.println("之後執行！");
    }
}

※這個等同xml的pointcut-ref 功能，一定要有「()」

@Named
@Aspect
public class BeforeAfter {
    @Pointcut("execution(public * aop.AOP.*(..))")
    private void shareAOP(){}
    
    @AfterReturning(pointcut = "BeforeAfter.shareAOP()")
    //    @AfterReturning("execution(public * aop.AOP.*(..))")
    public void returnAfter() {
        System.out.println("return 之後執行！");
    }
    
    @AfterThrowing(pointcut = "BeforeAfter.shareAOP()")
    //    @AfterThrowing("execution(public * aop.AOP.*(..))")
    public void throwAfter() {
        System.out.println("throw執行！");
    }
    
    @Around("BeforeAfter.shareAOP()")
    //    @Around("execution(public * aop.AOP.*(..))")
    public void after() {
        System.out.println("around執行！");
    }
}

※@AfterReturning、@AfterThrowing、@Around用法都一樣

※如果只要匹配A和C方法，可以這樣下
@Pointcut("execution(public * aop.AOP.A(..)) || execution(public * aop.AOP.C(..))")