【Spring实战】—— 9 AOP环绕通知

    public void watchPerformance(ProceedingJoinPoint joinpoint){
        try{
            System.out.println("begin!");
            long start = System.currentTimeMillis();
            
            joinpoint.proceed();
            
            long end = System.currentTimeMillis();
            System.out.println("end!        performance took "+(end-start)+" milliseconds");
        }catch(Throwable e){
            System.out.println("eee!We want our money back!");
        }
    }

<aop:around pointcut-ref="performance" method="watchPerformance"/>

The audience is taking their seats.
The audience is turning off their cellphones
begin!
Instrumentalist age:25
Playing Jingle Bells:TOOT TOOT TOOT
CLAP CLAP CLAP
end!        performance took 95 milliseconds

　　before()
　　around()
　　执行方法()
　　after/throw()
　　around()