Spring AOP

Posted 2020-11-25 zhuob

例子

实体类

public class Dog {
    private String name;
    public void say(){
        System.out.println(name+"在汪汪叫");
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }
}

切面类

@Aspect
public class MyAspect {
    @Before("execution(* com.how2java.pojo..*(..))")
    public void before(){
        System.out.println("前置通知");
    }
}

配置文件

<!--   开启Aspect功能-->
   <aop:aspectj-autoproxy/>

   <bean id="dog" class="com.how2java.pojo.Dog"/>

<!--   定义aspect类-->
   <bean name="myAspect" class="com.how2java.aspect.MyAspect"/>

测试

 ApplicationContext context=new ClassPathXmlApplicationContext("applicationContext.xml");
        Dog dog=(Dog)context.getBean("dog");
        System.out.println(dog.getClass());
        dog.say();

result:
class com.how2java.pojo.Dog$$EnhancerBySpringCGLIB$$c5373749
前置通知
null在汪汪叫