第一步：注解配置业务类

　　使用@Component("Pservice")注解ProductService 类

1 package com.spring.service; 2  3 import org.springframework.stereotype.Component; 4  5 @Component("Pservice") 6 public class ProductService { 7     public void doSomeService() { 8         System.out.println("doSomeService"); 9     }10 }

第二步：注解配置切面

@Aspect 注解表示这是一个切面

@Component 表示这是一个bean,由Spring进行管理

@Around(value = "execution(* com.spring.service.ProductService.*(..))") 表示对com.spring.service.ProductService 这个类中的所有方法进行切面操作

1 package com.spring.aspect; 2  3 import org.aspectj.lang.ProceedingJoinPoint; 4 import org.aspectj.lang.annotation.Around; 5 import org.aspectj.lang.annotation.Aspect; 6 import org.springframework.stereotype.Component; 7  8 @Aspect 9 @Component10 public class LoggerAspect {11     @Around(value = "execution(* com.spring.service.ProductService.*(..))")12     public Object log(ProceedingJoinPoint joinPoint) throws Throwable {13         System.out.println("start log:" + joinPoint.getSignature().getName());14         Object object = joinPoint.proceed();15         System.out.println("end log:" + joinPoint.getSignature().getName());16         return object;17     }18 }

第三步：修改applicationContext.xml

去掉原有信息，添加如下3行

　　<1>扫描包com.spring.aspect和com.spring.service，定位业务类和切面类

1 
     2 
     

　　<2>找到被注解了的切面类，进行切面配置

1 
     

 

applicationContext.xml

1 
      2 
     
      16     
      17     
      18     
       19 
     

第四步：测试

1 package com.spring.test; 2  3 import org.springframework.context.ApplicationContext; 4 import org.springframework.context.support.ClassPathXmlApplicationContext; 5  6 import com.spring.service.ProductService; 7  8 public class TestSpring { 9 10     public static void main(String[] args) {11         // TODO Auto-generated method stub12         ApplicationContext context = new ClassPathXmlApplicationContext(new String[] { "applicationContext.xml" });13         ProductService s = (ProductService) context.getBean("Pservice");14         s.doSomeService();15     }16 17 }