Spring 中 使用自定义Annotation 和 Spring AOP结合

 

 

======================Loggable 

package com.hub.mymvn.aopanno;

 

public @interface Loggable {

 

}

 

======================Employee

 

package com.hub.mymvn.aopanno;

 

import org.springframework.stereotype.Component;

 

@Component

publicclassEmployee {

 

       private String name;

 

       public String getName() {

             returnname;

       }

 

       @Loggable

       publicvoid setName(String name) {

             System.out.println("Start to set name as "+name);

             this.name = name;

       }

      

       publicvoid throwException(){

        thrownew RuntimeException("Dummy Exception");

    }

      

      

}

 

 

====================== EmployeeService

package com.hub.mymvn.aopanno;

 

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.stereotype.Service;

 

@Service

publicclass EmployeeService {

 

       @Autowired

       private Employee employee;

   

    public Employee getEmployee(){

        returnthis.employee;

    }

    

    publicvoid setEmployee(Employee e){

        this.employee=e;

    }

}

 

====================== EmployeeAnnotationAspect

package com.hub.mymvn.aopanno;

 

import org.aspectj.lang.annotation.Aspect;

import org.aspectj.lang.annotation.Before;

import org.springframework.stereotype.Component;

 

@Aspect

@Component

publicclassEmployeeAnnotationAspect {

 

    @Before("@annotation(com.hub.mymvn.aopanno.Loggable)")

    publicvoid myAdvice(){

        System.out.println("Executing myAdvice!!");

    }

   

    /*

    @Before("execution(public String getName())")

    public void getNameAdvice(){

        System.out.println("Executing Advice on getName()");

    }

    

    @Before("execution(* com.journaldev.spring.service.*.get*())")

    public void getAllAdvice(){

        System.out.println("Service method getter called");

    }

    */

}

======================

package com.hub.mymvn.aopanno;

 

import org.junit.Test;

import org.junit.runner.RunWith;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.test.context.ContextConfiguration;

import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

import org.springframework.validation.BindException;

import org.springframework.validation.Validator;

 

@RunWith(SpringJUnit4ClassRunner.class)

@ContextConfiguration(locations = "classpath:applicationContext.xml")

public class DemoTest {

         

          @Autowired

          private EmployeeService employeeService;

 

          @Test

          public void helloTest() {

                    System.out.println("Start helloTest");

                    Employee e = employeeService.getEmployee();

                    System.out.println(e);

                    System.out.println(e.getName());

                    e.setName("XXX");

                    System.out.println(e.getName());

                    System.out.println("End helloTest");

          }

}

======================运行结果

Start helloTest

com.hub.mymvn.aopanno.Employee@7f5338bf

null

Executing myAdvice!!

Start to set name as XXX

XXX

End helloTest