探祕Spring AOP （五） Spring AOP 使用講解 4

探祕Spring AOP

一，5種Advice註解的概述

二，代碼演示

/**
 * 
 * @Before("matchAnno()")
 * @After("matchAnno())") //至關於finally
 * @AfterReturning("matchException()")
 * @AfterThrowing("matchException()")
 * @Around("matchException()")
 * @Before(value = "matchLongArg() && args(productId)")
 * public void beforeWithArgs(Long productId)
 * @AfterReturning(value = "matchReturn()",returning = "returnValue")
 * public void getReulst(Object returnValue)
 */
@Aspect
@Component
public class AdviceAspectConfig {

    /******pointcut********/

    @Pointcut("@annotation(cn.evchar.aop.anno.AdminOnly) && within(cn.evchar.aop..*)")
    public void matchAnno(){}

    @Pointcut("execution(* *..find*(Long)) && within(cn.evchar.aop..*) ")
    public void matchLongArg(){}

    @Pointcut("execution(public * cn.evchar.aop.service..*Service.*(..) " +
            "throws java.lang.IllegalAccessException) && within(cn.evchar.aop..*)")
    public void matchException(){}

    @Pointcut("execution(String cn.evchar.aop..*.*(..)) && within(cn.evchar.aop..*)")
    public void matchReturn(){}

    /******advice********/

    @After("matchAnno()")
    public void after(){
        System.out.println("#### after");
    }

    @AfterThrowing("matchException()")
    public void after(){
        System.out.println("#### after throwing");
    }

    @AfterReturning(value = "matchReturn()",returning = "result")
    public void after(Object result){
        System.out.println(" #### after returning result爲：" + result);
    }

    @Around("matchAnno()")
    public Object after(ProceedingJoinPoint joinPoint){
        System.out.println("### before");

        Object res = null;
        try {
            res = joinPoint.proceed(joinPoint.getArgs());

            System.out.println("### after returning");
        } catch (Throwable throwable) {

            System.out.println("######ex");
            throwable.printStackTrace();
        } finally {
            System.out.println("#### finally");
        }

        return res;
    }

    @Before("matchLongArg() && args(productId)")
    public void after(Long productId){
        System.out.println("### before get args "+productId);
    }