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  • 关于Aop切面中的@Before @Around等操作顺序的说明

    【转】http://www.cnblogs.com/softidea/p/6123307.html

    话不多说,直接上代码:

    package com.cdms.aop.aspectImpl;
    
    import org.aspectj.lang.JoinPoint;
    import org.aspectj.lang.ProceedingJoinPoint;
    import org.aspectj.lang.annotation.*;
    import org.springframework.stereotype.Component;
    
    import java.util.Arrays;
    import java.util.List;
    
    /**
     * 创建 by 草帽boy on 2017/4/1.
     */
    @Aspect
    @Component
    public class ICacheAopAction {
        @Pointcut("@annotation(com.cdms.aop.ICache)")
        private void controllerAspect(){}
    
        @Before("controllerAspect()")
        public void Before(JoinPoint joinPoint){
            String classname = joinPoint.getTarget().getClass().getSimpleName();
            String methodName = joinPoint.getSignature().getName();
            List<Object> args = Arrays.asList(joinPoint.getArgs());
            System.out.println("@before Execute! --class name: " + classname + ", method name: " + methodName + " " + args );
        }
    
        @Around("controllerAspect()")
        public Object Around(ProceedingJoinPoint proceedingJoinPoint) throws Throwable {
            System.out.println("@Around:执行目标方法之前...");
            Object obj= proceedingJoinPoint.proceed();
            System.out.println("@Around:执行目标方法之后...");
            System.out.println("@Around:被织入的目标对象为:" + proceedingJoinPoint.getTarget());
            System.out.println( "@Around:原返回值:" + obj + ",这是返回结果的后缀");
            return obj;
        }
    
        @AfterThrowing("controllerAspect()")
        public void AfterThrowing(){
            System.out.println("异常通知....");
        }
    
        @After("controllerAspect()")
        public void After(JoinPoint point){
            System.out.println("@After:模拟释放资源...");
            System.out.println("@After:目标方法为:" +
                    point.getSignature().getDeclaringTypeName() +
                    "." + point.getSignature().getName());
            System.out.println("@After:参数为:" + Arrays.toString(point.getArgs()));
            System.out.println("@After:被织入的目标对象为:" + point.getTarget());
        }
    
        @AfterReturning("controllerAspect()")
        public void AfterReturning(JoinPoint point){
            System.out.println("@AfterReturning:模拟日志记录功能...");
            System.out.println("@AfterReturning:目标方法为:" +
                    point.getSignature().getDeclaringTypeName() +
                    "." + point.getSignature().getName());
            System.out.println("@AfterReturning:参数为:" +
                    Arrays.toString(point.getArgs()));
            System.out.println("@AfterReturning:返回值为:" );
            System.out.println("@AfterReturning:被织入的目标对象为:" + point.getTarget());
        }
    
    }
    

      测试的结果是:

    这样就很清楚的看出各种方法是在什么时候调用的啦

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  • 原文地址:https://www.cnblogs.com/luffyu/p/6655898.html
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