以AspectJ实现AOP事物
1 使用Annotation方式
spring依赖库
* SPRING_HOME/dist/spring.jar
* SPRING_HOME/lib/jakarta-commons/commons-logging.jar
* SPRING_HOME/lib/log4j/log4j-1.2.14.jar
* SPRING_HOME/lib/aspectj/*.jar
使用Aspect定义切入点
package com.travelsky.aop.aspect; import org.aspectj.lang.annotation.Aspect; import org.aspectj.lang.annotation.Before; import org.aspectj.lang.annotation.AfterReturning; @Aspect public class serviceAspect { @Pointcut("execution(* com.travelsky.service..*.*(..))") public void doBeforeService() { } @Pointcut("execution(* com.travelsky.service..*.*(..))") public void doAfterService() { } } ?
定义advice
package com.travelsky.aop.advice; import org.aspectj.lang.annotation.Aspect;import org.aspectj.lang.annotation.Before;@Aspectpublic class serviceAdvice{ @Before("com.travelsky.aop.aspect.serviceAspect.doBeforeService()") public void doAccessCheck() {// ...System.out.println("Aop: do before service."); } @AfterReturning("com.travelsky.aop.aspect.serviceAspect.doAfterService()") public void logInfo() {// ...System.out.println("Aop: do after service"); }}?
在Spring配置文件applicationContext.xml中配置
<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:tx="http://www.springframework.org/schema/tx"xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.0.xsd"default-autowire="byName" default-lazy-init="true"><aop:aspectj-autoproxy /> <bean /> </bean>
?
2 配置文件方式
spring依赖库
* SPRING_HOME/dist/spring.jar
* SPRING_HOME/lib/jakarta-commons/commons-logging.jar
* SPRING_HOME/lib/log4j/log4j-1.2.14.jar
* SPRING_HOME/lib/aspectj/*.jar
?
在applicationContext.xml中配置
<aop:config> <!-- 被切入的切面类--> <aop:aspect id="security" ref="securityHandler"> <!-- 要切入的点（针对哪个切入。表达式方法声明匹配被切入的类及其方法） --> <aop:pointcut id="allAddMethod" expression="execution(* com.travelsky.security.UserManagerImpl.add*(..))"/> <!-- 声明切面类的要切入方法及具体位置 --> <aop:before method="checkSecurity" pointcut-ref="allAddMethod"/> </aop:aspect></aop:config>
?
3 给出一个生产中实际使用的AspectJ管理AOP事物的配置文件（配置方式实现）
<?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:tx="http://www.springframework.org/schema/tx"xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.0.xsd"default-autowire="byName" default-lazy-init="true"><!-- 属性文件读入 --><bean id="propertyConfigurer"/><aop:advisorpointcut="execution(* com.travelsky.bravo.core..*Manager.*(..))"advice-ref="txAdvice" /><aop:advisorpointcut="execution(* com.travelsky.bravo.core.dao..*DaoImpl.*(..))"advice-ref="txAdvice" /><aop:advisorpointcut="execution(* com.travelsky.bravo.core.dao..*Dao.*(..))"advice-ref="txAdvice" /><aop:advisorpointcut="execution(* com.travelsky.agentsky..*Manager.*(..))"advice-ref="txAdvice" /><aop:advisorpointcut="execution(* com.travelsky.agentsky.ws..*AgentSkyWS4GF.*(..))"advice-ref="txAdvice" /></aop:config><!-- 基本事务定义,使用transactionManager作事务管理,默认get*方法的事务为readonly, 数据操作方法事物为rollback 其余方法按默认设置. --><tx:advice id="txAdvice"><tx:attributes><tx:method name="get*" read-only="true" /><tx:method name="find*" read-only="true" /><tx:method name="save*" rollback-for="Exception"/> <tx:method name="insert*" rollback-for="Exception" /> <tx:method name="remove*" rollback-for="Exception"/> <tx:method name="add*" no-rollback-for="Exception" /><tx:method name="*" /></tx:attributes></tx:advice> </beans>
?