基于aspectj的aop的操作

1.引入相关的jar包

2.建两个类

public class Book {
  public void add(){
      System.out.println("add-----------");
  }
}

import org.aspectj.lang.ProceedingJoinPoint;
public class MyBook {
    public void before(){
        System.out.println("前置輸出----------");
    }
    public void after(){
        System.out.println("后置输出----------");
    }
    public void around(ProceedingJoinPoint proceedingJoinPoint) throws Throwable{
        System.out.println("方法之前");
        proceedingJoinPoint.proceed();
        System.out.println("方法之后");
    }
}

3.在配置文件中完成相关的配置

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xsi:schemaLocation="
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd">
<bean id="book" class="com.example.aop.Book"></bean>
<bean id="myBook" class="com.example.aop.MyBook"></bean>
<!-- 配置aop方式 -->
<aop:config>
<!-- 配置切入點 -->
  <aop:pointcut expression="execution(* com.example.aop.Book.*(..))" id="pointcut1"/>
<!-- 配置切面
    把增强用到方法中去
 -->
   <aop:aspect ref="myBook">
   <!-- 配置增强类型
      method：增强类里面使用哪个方法作为前置
    -->
      <aop:before method="before" pointcut-ref="pointcut1"/>
      <aop:after method="after" pointcut-ref="pointcut1"/>
      <aop:around method="around" pointcut-ref="pointcut1"/>
   </aop:aspect>
</aop:config>

</beans>

4.建一个测试类 ，测试输出

import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import com.example.aop.Book;
import comexample.ano1.BookService;
public class TestAno {
    @Test
    public void testService() {
        ApplicationContext context = new ClassPathXmlApplicationContext(
                "bean3.xml");
        Book book=(Book) context.getBean("book");
        book.add();
    }
}