Spring注解配置AOP导致通知执行顺序紊乱解决方案

今天在测试Spring的AOP时,发现使用注解配置AOP的方式会导致通知的执行顺序紊乱。【最终通知居然在异常通知之前执行了】

测试代码

(1)定义TargetInterface目标接口

public interface TargetInterface {public abstract void targetProxy();}

(2)定义TargetImpl目标类

@Component('target')public class TargetImpl implements TargetInterface {public void targetProxy() { System.out.println('target proxy ......'); int i = 1/0;//异常}}

(3)定义切面类(内含增强方法)

@Component('myAspect')//定义切面类@Aspect//声明当前类是切面类public class TargetAspect {//定义切点表达式@Pointcut('execution(* com.ahzyy.target.impl.*.*(..))')public void pt() {}@Before('pt()')public void before() { System.out.println('前置通知......');}@After('pt()')public void after() { System.out.println('最终通知......');}@AfterReturning('pt()')public void afterReturning() { System.out.println('后置通知......');}@AfterThrowing('pt()')public void afterThrowing() { System.out.println('异常通知......');}}

(4)配置applicationContextAnno.xml文件

<!--配置组件扫描的包--><context:component-scan base-package='com.ahzyy'/><!--配置AOP自动代理--><aop:aspectj-autoproxy/>

(5)定义测试类

@RunWith(SpringJUnit4ClassRunner.class)//@ContextConfiguration('classpath:applicationContext.xml')@ContextConfiguration('classpath:applicationContextAnno.xml')public class AopTest {@Autowiredprivate TargetInterface target;@Testpublic void test01() { target.targetProxy();}}

(6)运行结果:

【最终通知在异常通知之前执行了!!!】

(7)解决方法:

(7.1)使用xml配置方式配置AOP;

(7.2)注解使用@Around(环绕通知)方式配置AOP(修改TargetAspect类使用环绕通知);

@Component('myAspect')//定义切面类@Aspect//声明当前类是切面类public class TargetAspect {//定义切点表达式@Pointcut('execution(* com.ahzyy.target.impl.*.*(..))')public void pt() {}@Around('pt()')public Object aroundNotice(ProceedingJoinPoint pjp) { System.out.println('环绕通知'); Object result = null; before();//前置通知 try { result = pjp.proceed(); afterReturning();//后置通知 } catch (Throwable throwable) {afterThrowing();//异常通知 throwable.printStackTrace(); } after();//最终通知 return result;}public void before() { System.out.println('前置通知......');}public void afterReturning() { System.out.println('后置通知......');}public void afterThrowing() { System.out.println('异常通知......');}public void after() { System.out.println('最终通知......');}}

(7.3)运行结果

[运行顺序正确]

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