AOP注解
@Component("target")
public class Target implements TargetInterface {
public void save() {
System.out.println("save running.....");
//int i = 1/0;
}
}
@Component("myAspect")
public class MyAspect {
public void before(){
System.out.println("前置增强..........");
}
}
在切面类中使用注解配置织入关系
@Component("myAspect")
@Aspect //标注当前MyAspect是一个切面类
public class MyAspect {
//配置前置通知
@Before("execution(* com.itheima.anno.*.*(..))")
public void before(){
System.out.println("前置增强..........");
}
}
<!--组件扫描-->
<context:component-scan base-package="com.itheima.anno"></context:component-scan>
<!--aop自动代理-->
<aop:aspectj-autoproxy></aop:aspectj-autoproxy>
@Component("myAspect")
@Aspect //标注当前MyAspect是一个切面类
public class MyAspect {
//Proceeding JoinPoint: 正在执行的连接点===切点
//@Around("execution(* com.itheima.anno.*.*(..))")
@Around("pointcut()")
public Object around(ProceedingJoinPoint pjp) throws Throwable {
System.out.println("环绕前增强....");
Object proceed = pjp.proceed();//切点方法
System.out.println("环绕后增强....");
return proceed;
}
//@After("execution(* com.itheima.anno.*.*(..))")
@After("MyAspect.pointcut()")
public void after(){
System.out.println("最终增强..........");
}
//定义切点表达式
@Pointcut("execution(* com.itheima.anno.*.*(..))")
public void pointcut(){}
}
