spring AOP demo

最新推荐文章于 2025-03-16 14:15:38 发布

原创最新推荐文章于 2025-03-16 14:15:38 发布 · 138 阅读

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1.接口类
package SpringTestAOP.service;

public interface Calculator {
    public int add(int i,int j);
}

2.实现类

package SpringTestAOP.impl;

import SpringTestAOP.service.Calculator;

public class CalculatorImpl implements Calculator {

    @Override
    public int add(int i, int j) {
        int result = i+j;
        return result;
    }
}
3.切面类
package SpringTestAOP.config;

import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.After;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.springframework.context.annotation.EnableAspectJAutoProxy;

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

@Aspect
public class CalculationAnnotation {
    @Pointcut("execution(*  SpringTestAOP.impl.CalculatorImpl.*(..))")
    private void pointCutMethod() {
    }

    @Before("pointCutMethod()")
    public void before(JoinPoint join){
        String mathName=join.getSignature().getName();
        List<Object> args = Arrays.asList(join.getArgs());

        System.out.println("前置通知---->before   方法名是:"+mathName+"\t参数列表是:"+args);
    }

    @After("pointCutMethod()")
    public void after(){
        System.out.println("后置通知---->after....");
    }

}

4.配置文件（其中有导入其他xml文件）

<?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:aop="http://www.springframework.org/schema/aop"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/aop
       http://www.springframework.org/schema/aop/spring-aop.xsd">


    <aop:aspectj-autoproxy/>

    <bean id="check" class="SpringTestAOP.config.CalculationAnnotation"/>

    <import resource="test.xml"/>

</beans>

5.被导入的配置文件

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd">
    <bean id="calculator" class="SpringTestAOP.impl.CalculatorImpl"/>
</beans>

6.验证类

package SpringTestAOP.demo;

import SpringTestAOP.service.Calculator;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class BeanTest2 {
    public static void main(String[] args) {
        BeanFactory factory = new ClassPathXmlApplicationContext("SpringTestAOP/config/applicationContext.xml");
        Calculator calculator = (Calculator) factory.getBean("calculator");
        calculator.add(1,2);
        calculator.sub(2,1);
    }
}