AOP简单的核心代码
编程步骤：annotation
1. <aop:aspectj-autoproxy></aop:aspectj-autoproxy>
2.加切面@Aspect
3.加组件@Component
1. 加切入点@Pointcut ("execution(public* com.service..*.add(..))")
Xml：方法一：
<beanid= "logInterceptor"class="com.*.aop.LogInterceptpr"></bean>
<!-- 切面配置 -->
<aop:config>
<!-- 指定切入点表达式,指定哪些目标对象或对象方法被切入 -->
<aop:pointcut expression="execution(public *com.*.service..*.add(..))"id="servicePointcut"/>
<!-- 指定logAspect为切面组件 -->
<aop:aspect id="logAspect"ref="logInterceptor">
<aop:before method="before"pointcut-ref="servicePointcut"/>
</aop:aspect>
</aop:config>
方法二：
<!-- 切面配置 -->
<aop:config>
<aop:aspect id="logAspect"ref="logInterceptor">
<aop:before method="before"pointcut="execution(public* com.*.service..*.add(..))"/>
</aop:aspect>
</aop:config>
Annotation:
@Aspect
@Component
publicclass LogInterceptpr {
@Pointcut ("execution(public* com.bjsxt.service..*.add(..))")//用方法定义切入点的名字
publicvoid myMethod(){};
@Before("myMethod()")
publicvoid before(){
System.out.println("method start");
}
@AfterReturning("myMethod()")
//@AfterThrowing("myMethod()")
publicvoid afterReturning(){
System.out.println("method after returning");
}
@Around("myMethod()")
publicvoid around(ProceedingJoinPointpjp)throws Throwable{
System.out.println("method around start");
pjp.proceed();
System.out.println("method around end");
}
}
