260.实现原理

@Aspect
public class TransactionDemo {
 @Pointcut(value="execution(* com.yangxin.core.service.*.*.*(..))")
 public void point(){
 }
 @Before(value="point()")
 public void before(){
 System.out.println("transaction begin");
 }
 @AfterReturning(value = "point()")
 public void after(){
 System.out.println("transaction commit");
 }
 @Around("point()")
 public void around(ProceedingJoinPoint joinPoint) throws Throwable{
 System.out.println("transaction begin");
 joinPoint.proceed();
 System.out.println("transaction commit");
 }
}