Spring阶段性学习总结（十 一）Aspect实现各种通知

1 package SpringAopImp;
2 
3 public interface Calculator {
4     int add(int i, int j);
5     int sub(int i, int j);
6     int mul(int i, int j);
7     int div(int i, int j);
8 }

 

 1 package SpringAopImp;
 2 
 3 
 4 import org.springframework.stereotype.Component;
 5 
 6 @Component
 7 public class CalculatorImp  implements Calculator {
 8        
 9     @Override
10     public int add(int i, int j) {
11         int result=i+j;
12         System.out.println("Method is Running");
13         return result;
14     }
15 
16     @Override
17     public int sub(int i, int j) {
18         int result=i-j;
19         return result;
20     }
21 
22     @Override
23     public int mul(int i, int j) {
24         int result=i*j;
25         return result;
26     }
27 
28     @Override
29     public int div(int i, int j) {
30         int result=i/j;
31         return result;
32     }
33 }

 

 1 package SpringAopImp;
 2 
 3 import org.aspectj.lang.JoinPoint;
 4 import org.aspectj.lang.annotation.*;
 5 import org.springframework.stereotype.Component;
 6 
 7 import java.util.Arrays;
 8 import java.util.List;
 9 
10 //把这个类声明为一个切面:1、把该类放入到IOC容器中
11 
12 @Component
13 @Aspect
14 public class LoggingAspect {
15 
16     //前置通知在目标方法开始前执行
17     @Before("execution(public int SpringAopImp.CalculatorImp.add(int ,int))")
18     public void beforeMethod(JoinPoint joinPoint) {
19         String methodName = joinPoint.getSignature().getName();
20         List