springboot（切面配置）

        1.引入aop 需要的依赖

            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-aop</artifactId>
            </dependency>

         2.创建controller切面对象

@Aspect
@Component
@Order(4)
public class InfoAspect {
    @Pointcut("execution(public * com.sf.controller.WhController.whPage*(..))")
    public void executeService() {
    	System.out.println("进入executeService");
    }
    
    @Before("executeService()")
    public void exBefore(JoinPoint pjp){
    	System.out.println("executeService Before");
        RequestAttributes ra = RequestContextHolder.getRequestAttributes();
        ServletRequestAttributes sra = (ServletRequestAttributes) ra;
        HttpServletRequest request = sra.getRequest();
        long startTime = System.currentTimeMillis();
        request.setAttribute("startTime",startTime);
    }
    
    // 通知
    @Around("executeService()")
    public Object doAround(ProceedingJoinPoint pjp) throws Throwable {
    	System.out.println("executeService Around");
        // result的值就是被拦截方法的返回值
        Object result = pjp.proceed();
        try {
        }catch (Exception e){
            e.printStackTrace();
        }
        return result;
    }
    
    //  执行切点之后
    @After("executeService()")
    public void exAfter(JoinPoint joinPoint)  {
    	System.out.println("excuteService After");
    }
}

        3.创建切面service对象

          新建切面对象，上端代码中的表达式改为 execution(* com.sf.*.*Service.get*(..))