Spring aop的几种方式

电玩女神 2021-09-24 16:32 378阅读 0赞

工程下载地址：[https://gitee.com/wuhan1/spring-parent.git][https_gitee.com_wuhan1_spring-parent.git] 的**spring-02**  
工程结构  
![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2RoajE5OTE4MQ_size_16_color_FFFFFF_t_70][]  
1.实现接口  
  
分别实现相应的接口，后置通知  
![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2RoajE5OTE4MQ_size_16_color_FFFFFF_t_70 1][]  
环绕通知  
![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2RoajE5OTE4MQ_size_16_color_FFFFFF_t_70 2][]  
对应的xml配置，applicationContext.xml

<beans xmlns="http://www.springframework.org/schema/beans"
           xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
           xmlns:p="http://www.springframework.org/schema/p"
           xmlns:aop="http://www.springframework.org/schema/aop"
           xmlns:context="http://www.springframework.org/schema/context"
           xmlns:jee="http://www.springframework.org/schema/jee"
           xsi:schemaLocation="
            http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
            http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
            http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
            http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-4.0.xsd">
    
        <bean id="studentServiceImpl" class="com.xqc.com.StudentServiceImpl" ></bean>
    
        
        <bean id="logBefore" class="com.xqc.xml.LogBefore"></bean>
        
        <bean id="logAfter" class="com.xqc.xml.LogAfter"></bean>
        
        <bean id="logThrow" class="com.xqc.xml.LogThrow"></bean>
        
        <bean id="logAround" class="com.xqc.xml.LogAround"></bean>
    
        
        <aop:config>
            
            <aop:pointcut id="beforePointcut" expression="execution(* com.xqc.com.StudentServiceImpl.*(..))"></aop:pointcut>
            
            <aop:advisor advice-ref="logBefore" pointcut-ref="beforePointcut"></aop:advisor>
        </aop:config>
    
        
        <aop:config>
            <aop:pointcut id="afterPointcut" expression="execution(* com.xqc.com.StudentServiceImpl.*(..))"></aop:pointcut>
            <aop:advisor advice-ref="logAfter" pointcut-ref="afterPointcut"></aop:advisor>
        </aop:config>
    
        
        <aop:config>
            <aop:pointcut id="throwPointcut" expression="execution(* com.xqc.com.StudentServiceImpl.*(..))"></aop:pointcut>
            <aop:advisor advice-ref="logThrow" pointcut-ref="throwPointcut"></aop:advisor>
        </aop:config>
    
        
        <aop:config>
            <aop:pointcut id="aroundPointcut" expression="execution(* com.xqc.com.StudentServiceImpl.*(..))"></aop:pointcut>
            <aop:advisor advice-ref="logAround" pointcut-ref="aroundPointcut"></aop:advisor>
        </aop:config>
    </beans>

2.基于Schema，声明一个类，然后写前置、后置、环绕等通知  
![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2RoajE5OTE4MQ_size_16_color_FFFFFF_t_70 3][]

在xml中声明，那个是前置、后置通知等，对应的xml文件，schema-applicationContext.xml

3.注解形式  
新建一个类，加上@Aspect注解，通知加上@Component，扫描此类注入到容器中

@Component
    @Aspect
    public class AnnAspectj {
    
        /**
         * 前置通知
         */
        @Before("execution(* com.xqc.com.StudentServiceImpl.*(..))")
        public void before(JoinPoint joinPoint){
            System.out.println("注解通知，before。。。。");
        }
    
        /**
         * 最终通知
         */
        @AfterReturning("execution(* com.xqc.com.StudentServiceImpl.*(..))")
        public void After(JoinPoint joinPoint){
            System.out.println("注解通知，AfterReturning。。。。");
        }
    
        /**
         * 最终通知
         */
        @Around("execution(* com.xqc.com.StudentServiceImpl.*(..))")
        public Object Around(ProceedingJoinPoint joinPoint){
            System.out.println("注解通知，Around之前。。。。");
            Object proceed = null;
            try {
                proceed = joinPoint.proceed();
                System.out.println("注解通知，Around之后。。。。");
            } catch (Throwable throwable) {
                throwable.printStackTrace();
            }
            return proceed;
        }

配置文件，annotation-applicationContext.xml

[https_gitee.com_wuhan1_spring-parent.git]: https://gitee.com/wuhan1/spring-parent.git
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