Spring4 AOP入门（AspectJ的XML的方式）

小鱼儿 2022-01-22 14:15 227阅读 0赞

1 创建web项目

2 引入jar包（spring的4个+2个日志+4个aop相关包）

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQwOTY5MTA4_size_16_color_FFFFFF_t_70][]

3 编写applicationContext.xml配置文件

A 引入aop的约束

<?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"> 
    
    </beans>

B 编写目标类并将它托管给spring

<bean id="productDao" class="com.spring.demo3.ProductDaoImpl"/>

4 编写切面类

public class MyAspectXML {
    	public void checkPri() {
    		//权限校验
    		System.out.println("权限校验===========");
    
    	}
    }

5 将切面类托管给spring

<bean id="myAspect" class="com.spring.demo3.MyAspectXML"/>

6 配置aop

<aop:config>
    	
    	<aop:pointcut expression="execution(* com.spring.demo3.ProductDaoImpl.save(..))" id="pointcut1"/>
    	
    	<aop:aspect ref="myAspect">
    	<aop:before method="checkPri" pointcut-ref="pointcut1"/>
    	</aop:aspect>
    	</aop:config>

7 编写测试类

public class SpringDemo3 {
    
    	
    	ApplicationContext applicationContext = new ClassPathXmlApplicationContext(
    			"applicationContext.xml");
    	ProductDao productDao = (ProductDao) applicationContext
    			.getBean("productDao");
    
    	@Test
    	public void demo1() {
    		productDao.save();
    		productDao.update();
    		productDao.delete();
    		productDao.find();
    
    	}

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[20190606161936950.png]: /images/20220122/3048f73d169845c2ad96ca8d9c5ecfad.png