Spring 嵌套AOP 的顺序问题 指定Aspect优先级

Spring3 M2

另外所需要的jar

aopalliance-1.0.jar

aspectjrt-1.6.8.jar

aspectjweaver-1.6.8.jar

cglib-nodep-2.2.3.jar

package com.epkj.test;

import org.aspectj.lang.ProceedingJoinPoint;

public class Aop1 {

    public void log(ProceedingJoinPoint point) throws Throwable {
        System.out.println("Aop1.log1()-begion");
        point.proceed();
        System.out.println("Aop1.log1()-end");
    }
}

<?xml version="1.0" encoding="UTF-8"?>
<beans
    xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:tx="http://www.springframework.org/schema/tx"
    xmlns:context="http://www.springframework.org/schema/context"  
    xmlns:mvc="http://www.springframework.org/schema/mvc"  
    xmlns:aop="http://www.springframework.org/schema/aop"
    xmlns:cache="http://www.springframework.org/schema/cache"
    xsi:schemaLocation="http://www.springframework.org/schema/beans 
    http://www.springframework.org/schema/beans/spring-beans-3.0.xsd 
    http://www.springframework.org/schema/tx 
    http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
    http://www.springframework.org/schema/context
    http://www.springframework.org/schema/context/spring-context-3.0.xsd
    http://www.springframework.org/schema/mvc
    http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
    http://www.springframework.org/schema/aop
    http://www.springframework.org/schema/aop/spring-aop-3.2.xsd
    http://www.springframework.org/schema/cache
    http://www.springframework.org/schema/cache/spring-cache-3.2.xsd">
    
    <context:component-scan base-package="com.epkj.*" />
    
    <aop:config>
        <aop:aspect id="asoect1" ref="aop1" order="2">
            <aop:pointcut expression="execution(* com.epkj.test.*.*(..))" id="allMethod"/>
            <aop:around method="log" pointcut-ref="allMethod"/>
        </aop:aspect>
    </aop:config> 
    
    <aop:config>
        <aop:aspect id="asoect2" ref="aop2" order="1">
            <aop:pointcut expression="execution(* com.epkj.test.*.*(..))" id="allMethod"/>
            <aop:around method="log" pointcut-ref="allMethod"/>
        </aop:aspect>
    </aop:config>
    
    <bean id="aop1" class="com.epkj.test.Aop1" />
    <bean id="aop2" class="com.epkj.test.Aop2" />
</beans>

 <aop:aspect id="asoect2" ref="aop2" order="1">

 order属性用来指定AOP的顺序

还有其他几种方式

package com.codeproject.jackie.springrecipesnote.springaop;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.springframework.core.Ordered;

/**
 * @author jackie
 * 
 */
@Aspect
public class CalculatorValidationAspect implements Ordered{
    private Log log = LogFactory.getLog(this.getClass());
    
    @Before("execution(* *.*(double, double))")
    public void validateBefore(JoinPoint joinPoint) {
        for (Object arg : joinPoint.getArgs()) {
            log.info("validate begins...");
            validate((Double) arg);
        }
    }

    private void validate(Double arg) {
        if (arg < 0) {
            throw new IllegalArgumentException("Positive numbers only");
        }
    }

    @Override
    public int getOrder() {
        return 0;
    }
}&nbsp; 

package com.codeproject.jackie.springrecipesnote.springaop;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.springframework.core.annotation.Order;

/**
 * @author jackie
 * 
 */
@Aspect
@Order(0)
public class CalculatorValidationAspect {
    private Log log = LogFactory.getLog(this.getClass());
    
    @Before("execution(* *.*(double, double))")
    public void validateBefore(JoinPoint joinPoint) {
        for (Object arg : joinPoint.getArgs()) {
            log.info("validate begins...");
            validate((Double) arg);
        }
    }

    private void validate(Double arg) {
        if (arg < 0) {
            throw new IllegalArgumentException("Positive numbers only");
        }
    }
}