1、根本配置
1)在Spring的配置文件或配置类中,开启注解扫描
2)应用注解创立被加强类和加强类对象
3)在加强类上增加注解@Aspect
4)在Spring配置文件中开启生成代理对象
xml配置文件形式:
<aop:aspectj-autoproxy></aop:aspectj-autoproxy>

2、配置不同类型的告诉
加强类(代理类)

@Component@Aspectpublic class UserProxy{  //前置告诉  @Before(value="execution(* com.zong.spring.User.add(..))")  public void before(){    System.out.println("before...");  }    //后置告诉  @AfterReturning(value="execution(* com.zong.spring.User.add(..))")  public void afterReturning(){    System.out.println("afterReturning...");  }    //最终告诉  @After(value="execution(* com.zong.spring.User.add(..))")  public void after(){    System.out.println("after...");  }    //异样告诉  @AfterThrowing(value="execution(* com.zong.spring.User.add(..))")  public void afterThrowing(){    System.out.println("afterThrowing...");  }    //盘绕告诉  @Around(value="execution(* com.zong.spring.User.add(..))")  public void around(ProceedingJoinPoint proceedingJoinPoint){    System.out.println("盘绕之前...");    //执行被加强的办法    proceedingJoinPoint.proceed();    System.out.println("盘绕之后...");  }}

执行后果

盘绕之前...before..add..盘绕之后..after...afterReturning...

异样执行后果

盘绕之前...Before...after...afterThrowing..

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