Spring Aspectj的使用
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?package cn.itcast.service;import org.aspectj.lang.ProceedingJoinPoint;import org.aspectj.lang.annotation.After;import org.aspectj.lang.annotation.AfterReturning;import org.aspectj.lang.annotation.AfterThrowing;import org.aspectj.lang.annotation.Around;import org.aspectj.lang.annotation.Aspect;import org.aspectj.lang.annotation.Before;import org.aspectj.lang.annotation.Pointcut;//这个注解用来说明这个类是切面@Aspectpublic class MyInterceptor {//定义切入点用来定义拦截的方法@Pointcut("execution (* cn.itcast.service.impl..*.*(..))")private void anyMethod(){}//采用方法声明一个切入点@Before("anyMethod()")//定义前置通知public void doAccessCheck() {System.out.println("前置通知");}@After("anyMethod()")public void doAfter()//定义后置通知{System.out.println("最终通知");}@AfterReturning(pointcut="anyMethod()")public void doAfterReturning()//定义后置通知{System.out.println("后置通知");}//注意:如果出现异常则前置通知和最终通知执行，后置通知则不执行@AfterThrowing(pointcut="anyMethod()", throwing="ex")//定义异常通知 public void doExceptionAction(Exception ex) {System.out.println("异常通知");}@Around("anyMethod()")//定义环绕通知，方法中的参数是固定的public Object doAround(ProceedingJoinPoint pjp) throws Throwable{System.out.println("环绕通知之前");Object result=pjp.proceed();System.out.println("环绕通知之后");return result;}}
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