zoukankan      html  css  js  c++  java
  • spring的学习_____10 spring AoP的实现方式3 使用 注解 实现

    (本案例是idea下的maven项目,补充上一篇文章)

    1.编写加了注解的增强类:

    @Aspect
    //类 --切面
    public class Anno {
    
        @Before("execution(* com.xbf.service.UserServiceImpl.*(..))")
        //注解声明:切入点,和要织入进去的方法
        public void before(){
            System.out.println("方法执行前:~~~~~~~~~~~~~~");
        }
    
        @After("execution(* com.xbf.service.UserServiceImpl.*(..))")
        //注解声明:切入点,和要织入进去的方法
        public void after(){
            System.out.println("方法执行后~~~~~~~~~~~~~~");
        }
    
    
    }

    2.spring的配置文件 dnno.xml

    <?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">
    
    
        <!--1.User bean的注册-->
        <bean id="user" class="com.xbf.service.UserServiceImpl"/>
    
        <!--2.增强类的注册-->
        <bean id="anno" class="com.xbf.anno.Anno"/>
    
        <!--识别注解 自动代理-->
        <aop:aspectj-autoproxy/>
    
    
    
    </beans>

    3.测试类的编写:

    public class Anno {
    
        @Test
        public void test(){
    
            ApplicationContext context=new ClassPathXmlApplicationContext("anno.xml");
    
            UserService user = (UserService) context.getBean("user");
    
            user.add();
    
        }
    }

    总结:增强类添加了注解; 在类名上面添加 切面的注解,在类中的方法名上面添加 织入时机的注解(并声明切入点,切入点就是要织入的接口实现类的目标方法)。

  • 相关阅读:
    Leetcode Binary Tree Level Order Traversal
    Leetcode Symmetric Tree
    Leetcode Same Tree
    Leetcode Unique Paths
    Leetcode Populating Next Right Pointers in Each Node
    Leetcode Maximum Depth of Binary Tree
    Leetcode Minimum Path Sum
    Leetcode Merge Two Sorted Lists
    Leetcode Climbing Stairs
    Leetcode Triangle
  • 原文地址:https://www.cnblogs.com/xbfchder/p/11273034.html
Copyright © 2011-2022 走看看