Spring之重用切入点表达式

import java.util.Arrays;
import java.util.List;

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.springframework.stereotype.Component;

@Aspect
@Component
public class Log {
    
    @Pointcut("execution(* com.atguigu.spring.aop.impl.Cacl.*(int,int))")
    public void declareJoinPoint(){}

    @Before("declareJoinPoint()")
    public void before(JoinPoint joinPoint){
        String methodName = joinPoint.getSignature().getName();
        List<Object> args = Arrays.asList(joinPoint.getArgs());
        System.out.println("before method"+methodName+" begins with "+args);
    }
    
    //后置通知，无论是否出现异常
    @After("declareJoinPoint()")
    public void after(JoinPoint joinPoint){
        String methodName = joinPoint.getSignature().getName();
        System.out.println("after method "+methodName+" ends");
    }
    
    @AfterReturning(value="declareJoinPoint()",returning="result")
    public void afterReturning(JoinPoint joinPoint,Object result){
        String methodName = joinPoint.getSignature().getName();
        System.out.println("afterreturning method "+methodName+" ends with "+result);
    }
    
    @AfterThrowing(value="declareJoinPoint()",throwing="exception")
    public void afterThrowing(JoinPoint joinPoint,Exception exception){
        String methodName = joinPoint.getSignature().getName();
        System.out.println("afterthrowing method "+methodName +"occurs by "+exception);
    }
    
    @Around("declareJoinPoint()")
    public Object around(ProceedingJoinPoint pjp){
        Object result = null;
        String methodName = pjp.getSignature().getName();
        
        try {
            System.out.println(" around method "+methodName +" begins with "+Arrays.asList(pjp.getArgs()));
            result = pjp.proceed();
            System.out.println("around method "+methodName +" ends ");
        } catch (Throwable e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return result;
    }    
}

import java.util.Arrays;
import java.util.List;

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.springframework.stereotype.Component;

@Aspect
@Component
public class Log {
    
    @Pointcut("execution(* com.atguigu.spring.aop.impl.Cacl.*(int,int))")
    public void declareJoinPoint(){}

    @Before("declareJoinPoint()")
    public void before(JoinPoint joinPoint){
        String methodName = joinPoint.getSignature().getName();
        List<Object> args = Arrays.asList(joinPoint.getArgs());
        System.out.println("before method"+methodName+" begins with "+args);
    }
    
    //后置通知，无论是否出现异常
    @After("declareJoinPoint()")
    public void after(JoinPoint joinPoint){
        String methodName = joinPoint.getSignature().getName();
        System.out.println("after method "+methodName+" ends");
    }
    
    @AfterReturning(value="declareJoinPoint()",returning="result")
    public void afterReturning(JoinPoint joinPoint,Object result){
        String methodName = joinPoint.getSignature().getName();
        System.out.println("afterreturning method "+methodName+" ends with "+result);
    }
    
    @AfterThrowing(value="declareJoinPoint()",throwing="exception")
    public void afterThrowing(JoinPoint joinPoint,Exception exception){
        String methodName = joinPoint.getSignature().getName();
        System.out.println("afterthrowing method "+methodName +"occurs by "+exception);
    }
    
    @Around("declareJoinPoint()")
    public Object around(ProceedingJoinPoint pjp){
        Object result = null;
        String methodName = pjp.getSignature().getName();
        
        try {
            System.out.println(" around method "+methodName +" begins with "+Arrays.asList(pjp.getArgs()));
            result = pjp.proceed();
            System.out.println("around method "+methodName +" ends ");
        } catch (Throwable e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return result;
    }    
}

@Pointcut指定切面，方便维护