關於Aop切面中的@Before @Around等操作順序的說明

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

話不多說，直接上代碼：

1.  
   package com.cdms.aop.aspectImpl;
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3.  
   import org.aspectj.lang.JoinPoint;
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   import org.aspectj.lang.ProceedingJoinPoint;
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   import org.aspectj.lang.annotation.*;
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   import org.springframework.stereotype.Component;
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8.  
   import java.util.Arrays;
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   import java.util.List;
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11.  
    /**
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    * 創建 by 草帽boy on 2017/4/1.
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    */
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    @Aspect
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    @Component
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    public class ICacheAopAction {
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    @Pointcut("@annotation(com.cdms.aop.ICache)")
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    private void controllerAspect(){}
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    @Before("controllerAspect()")
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    public void Before(JoinPoint joinPoint){
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    String classname = joinPoint.getTarget().getClass().getSimpleName();
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    String methodName = joinPoint.getSignature().getName();
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    List<Object> args = Arrays.asList(joinPoint.getArgs());
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    System.out.println( "@before Execute! --class name: " + classname + ", method name: " + methodName + " " + args );
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    }
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    @Around("controllerAspect()")
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    public Object Around(ProceedingJoinPoint proceedingJoinPoint) throws Throwable {
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    System.out.println( "@Around：執行目標方法之前...");
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    Object obj= proceedingJoinPoint.proceed();
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    System.out.println( "@Around：執行目標方法之后...");
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    System.out.println( "@Around：被織入的目標對象為：" + proceedingJoinPoint.getTarget());
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    System.out.println( "@Around：原返回值：" + obj + "，這是返回結果的后綴");
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    return obj;
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    }
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    @AfterThrowing("controllerAspect()")
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    public void AfterThrowing(){
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    System.out.println( "異常通知....");
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    }
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    @After("controllerAspect()")
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    public void After(JoinPoint point){
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    System.out.println( "@After：模擬釋放資源...");
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    System.out.println( "@After：目標方法為：" +
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    point.getSignature().getDeclaringTypeName() +
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    "." + point.getSignature().getName());
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    System.out.println( "@After：參數為：" + Arrays.toString(point.getArgs()));
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    System.out.println( "@After：被織入的目標對象為：" + point.getTarget());
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    }
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    @AfterReturning("controllerAspect()")
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    public void AfterReturning(JoinPoint point){
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    System.out.println( "@AfterReturning：模擬日志記錄功能...");
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    System.out.println( "@AfterReturning：目標方法為：" +
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    point.getSignature().getDeclaringTypeName() +
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    "." + point.getSignature().getName());
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    System.out.println( "@AfterReturning：參數為：" +
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    Arrays.toString(point.getArgs()));
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    System.out.println( "@AfterReturning：返回值為：" );
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    System.out.println( "@AfterReturning：被織入的目標對象為：" + point.getTarget());
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    }
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65.  
    }

  測試的結果是：

這樣就很清楚的看出各種方法是在什么時候調用的啦