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pointcut（切斷點）表達式：

• execution(public * *(..))??
• execution(* set*(..))??
• execution(* com.xyz.service.AccountService.*(..))??
• execution(* com.xyz.service..(..))??
• execution(* com.xyz.service...(..))??
• within(com.xyz.service.*) (only in Spring AOP)
• within(com.xyz.service..*) (only in Spring AOP)
• this(com.xyz.service.AccountService) (only in Spring AOP)
• ....

???? execution用于匹配方法執行的連接點

舉幾個例子：

• execution(public * *(..))?????? 切入點為執行所有public方法時?
• execution(* set*(..))?????? ?切入點為執行所有set開始的方法時
• execution(* com.xyz.service.AccountService.*(..))??????? 切入點為執行AccountService類中所有方法時
• execution(* com.xyz.service..(..))????????????切入點為執行com.xyz.service包下的所有方法時
• execution(* com.xyz.service...(..))??????????? 切入點為執行com.xyz.service包及其子包下的所有方法時

• within(com.xyz.service.*) (only in Spring AOP)
• within(com.xyz.service..*) (only in Spring AOP)??????????? within 用于匹配制定類型內的執行方法
• this(com.xyz.service.AccountService) (only in Spring AOP)????? this 用于匹配當前AOP代理對象類型的執行方法

?其他

• target(com.xyz.service.AccountService)? (only in Spring AOP)??? target 用于匹配當前目標對象類型的執行方法
• args(java.io.Serializable)?? (only in Spring AOP)??????? args 用于匹配當前執行的方法傳入的參數為指定類型的執行方法

基于注解的匹配

• @target(org.springframework.transaction.annotation.Transactional)? (only in Spring AOP)
• @within(org.springframework.transaction.annotation.Transactional)? (only in Spring AOP)
• @annotation(org.springframework.transaction.annotation.Transactional)? (only in Spring AOP)
• @args(com.xyz.security.Classified) ? (only in Spring AOP)

實現：

<aop:config><aop:pointcut id="businessService" expression="execution(* com.aop.schema..(..))"></aop:pointcut> </aop:config>

例子：

新建兩個類

package com.aop.schema; /*** * 切面類**/ public class MyAspect {}

?

package com.aop.schema;/*** * 業務類**/ public class ApsectBiz {}

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XML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:aop="http://www.springframework.org/schema/aop"xmlns:context="http://www.springframework.org/schema/context"xsi:schemaLocation="http://www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/spring-beans-4.1.xsdhttp://www.springframework.org/schema/contexthttp://www.springframework.org/schema/context/spring-context-4.1.xsdhttp://www.springframework.org/schema/aophttp://www.springframework.org/schema/aop/spring-aop-4.1.xsd"><bean id="myAspect" class="com.aop.schema.MyAspect"></bean><bean id="apsectBiz" class="com.aop.schema.ApsectBiz"></bean><aop:config><aop:aspect id="myAspectAOP" ref="myAspect"><aop:pointcut id="myPointcut" expression="execution(* com.aop.schema.ApsectBiz.*(..))" /></aop:aspect></aop:config></beans>

?

轉載于:https://www.cnblogs.com/JsonShare/p/4633564.html

總結

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