SpringAOP原理

灰太狼 2022-02-15 09:26 256阅读 0赞

**一、AOP（Aspect Oriented Programming）原理解析**

1、概念：面向切面编程(横切)  
2、理解：在不改变主线代码的情况下添加一些支线业务代码  
3、应用：a.添加支线业务。b.类方法功能增强。

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3poYW5nMTUwMTE0_size_16_color_FFFFFF_t_70]

**二、SpringAOP配置**

<?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:context="http://www.springframework.org/schema/context"
           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/context
            http://www.springframework.org/schema/context/spring-context.xsd
            http://www.springframework.org/schema/aop
            http://www.springframework.org/schema/aop/spring-aop.xsd">
    
        
        <bean id="queryRunner" class="org.apache.commons.dbutils.QueryRunner"></bean>
    
        
        <bean id="accountDao" class="com.mollen.dao.impl.AccountDaoImpl">
            <property name="queryRunner" ref="queryRunner"></property>
        </bean>
    
        
        
        <bean id="accountService" class="com.mollen.service.impl.AccountServiceImpl">
            <property name="accountDao" ref="accountDao"></property>
        </bean>
    
        
        <bean id="transactionManger" class="com.mollen.utils.TransactionManger"></bean>
    
        
        <aop:config>
            
            <aop:aspect id="txAspect" ref="transactionManger">
                <aop:pointcut id="txPointcut" expression="execution(* com.mollen.service.impl.AccountServiceImpl.transfer(..))"></aop:pointcut>
                
                
                <aop:before method="startTransaction" pointcut-ref="txPointcut"></aop:before>
                
                <aop:after-returning method="commitTransaction" pointcut-ref="txPointcut"></aop:after-returning>
                
                <aop:after-throwing method="rollbackTransaction" pointcut-ref="txPointcut"></aop:after-throwing>
                
                <aop:after method="release" pointcut-ref="txPointcut"></aop:after>
            </aop:aspect>
        </aop:config>
    
    </beans>

原文：[https://blog.csdn.net/mollen/article/details/83856230][https_blog.csdn.net_mollen_article_details_83856230]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3poYW5nMTUwMTE0_size_16_color_FFFFFF_t_70]: /images/20220215/598b67eced984e6eb495a35cf8d8c592.png
[https_blog.csdn.net_mollen_article_details_83856230]: https://blog.csdn.net/mollen/article/details/83856230