Spring AOP 执行顺序。

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 两个不同优先级aop是拦截登录方法，执行顺序。

package com.leusysm.mgr.interceptor;

import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.After;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.AfterThrowing;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.core.annotation.Order;
import org.springframework.stereotype.Component;

/**
 * @author zhouhaiming  Email: [email protected]
 * @date 2018/11/21 10:51
 */
@Component
@Aspect
@Order(-3)
public class MessageQueueAopAspect1 {
    private static final Logger LOG = LoggerFactory.getLogger(MessageQueueAopAspect1.class);


    @Pointcut("execution(public * com.leusysm.mgr.controller.CasController.login(..))")
    private void pointCutMethod() {
    }

    //声明前置通知
    @Before("pointCutMethod()")
    public void doBefore(JoinPoint point) {
        LOG.info("MessageQueueAopAspect1:doBefore");
        return;
    }

    //声明后置通知
    @AfterReturning(pointcut = "pointCutMethod()", returning = "returnValue")
    public void doAfterReturning(JoinPoint point,Object returnValue) {
        LOG.info("MessageQueueAopAspect1:doAfterReturning");
    }

    //声明例外通知
    @AfterThrowing(pointcut = "pointCutMethod()", throwing = "e")
    public void doAfterThrowing(Exception e) {
        LOG.info("MessageQueueAopAspect1:doAfterThrowing");
    }

    //声明最终通知
    @After("pointCutMethod()")
    public void doAfter() {
        LOG.info("MessageQueueAopAspect1:doAfter");
    }

    //声明环绕通知
    @Around("pointCutMethod()")
    public Object doAround(ProceedingJoinPoint pjp) throws Throwable {
        LOG.info("MessageQueueAopAspect1:doAround-1");
        Object obj = pjp.proceed();
        LOG.info("MessageQueueAopAspect1:doAround-2");
        return obj;
    }

}

package com.leusysm.mgr.interceptor;

import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.After;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.AfterThrowing;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.core.annotation.Order;
import org.springframework.stereotype.Component;

/**
 * @author zhouhaiming  Email: [email protected]
 * @date 2018/11/21 10:53
 */
@Component
@Aspect
@Order(-4)
public class MessageQueueAopAspect2{

    private static final Logger LOG = LoggerFactory.getLogger(MessageQueueAopAspect2.class);

    @Pointcut("execution(public * com.leusysm.mgr.controller.CasController.login(..))")
    private void pointCutMethod() {
    }


    //声明前置通知
    @Before("pointCutMethod()")
    public void doBefore(JoinPoint point) {
        LOG.info("MessageQueueAopAspect2:doBefore");
        return;
    }

    //声明后置通知
    @AfterReturning(pointcut = "pointCutMethod()", returning = "returnValue")
    public void doAfterReturning(JoinPoint point,Object returnValue) {
        LOG.info("MessageQueueAopAspect2:doAfterReturning");
    }

    //声明例外通知
    @AfterThrowing(pointcut = "pointCutMethod()", throwing = "e")
    public void doAfterThrowing(Exception e) {
        LOG.info("MessageQueueAopAspect2:doAfterThrowing");
    }

    //声明最终通知
    @After("pointCutMethod()")
    public void doAfter() {
        LOG.info("MessageQueueAopAspect2:doAfter");
    }

    //声明环绕通知
    @Around("pointCutMethod()")
    public Object doAround(ProceedingJoinPoint pjp) throws Throwable {
        LOG.info("MessageQueueAopAspect2:doAround-1");
        Object obj = pjp.proceed();
        LOG.info("MessageQueueAopAspect2:doAround-2");
        return obj;
    }

}

 根据order的不同执行顺序不一样。下面是两个aop的执行顺序，order越小优先级越高。

2018-12-04 10:03:39.864 [qtp1523196930-47] INFO  c.g.l.m.i.MessageQueueAopAspect2 -MessageQueueAopAspect2:doAround-1
2018-12-04 10:03:39.865 [qtp1523196930-47] INFO  c.g.l.m.i.MessageQueueAopAspect2 -MessageQueueAopAspect2:doBefore
2018-12-04 10:03:39.865 [qtp1523196930-47] INFO  c.g.l.m.i.MessageQueueAopAspect1 -MessageQueueAopAspect1:doAround-1
2018-12-04 10:03:39.865 [qtp1523196930-47] INFO  c.g.l.m.i.MessageQueueAopAspect1 -MessageQueueAopAspect1:doBefore
2018-12-04 10:03:40.232 [qtp1523196930-47] INFO  c.g.l.m.i.MessageQueueAopAspect1 -MessageQueueAopAspect1:doAround-2
2018-12-04 10:03:40.232 [qtp1523196930-47] INFO  c.g.l.m.i.MessageQueueAopAspect1 -MessageQueueAopAspect1:doAfter
2018-12-04 10:03:40.232 [qtp1523196930-47] INFO  c.g.l.m.i.MessageQueueAopAspect1 -MessageQueueAopAspect1:doAfterReturning
2018-12-04 10:03:40.232 [qtp1523196930-47] INFO  c.g.l.m.i.MessageQueueAopAspect2 -MessageQueueAopAspect2:doAround-2
2018-12-04 10:03:40.232 [qtp1523196930-47] INFO  c.g.l.m.i.MessageQueueAopAspect2 -MessageQueueAopAspect2:doAfter
2018-12-04 10:03:40.232 [qtp1523196930-47] INFO  c.g.l.m.i.MessageQueueAopAspect2 -MessageQueueAopAspect2:doAfterReturning