@Pointcut

定义切点，切点表达式(execution(权限访问符 返回值类型 方法所属的类名包路径.方法名(形参类型) 异常类型))

@Aspect
@Component
public class AfterThrowingAspect {
    @Pointcut("execution(* com.yh.test.*.*(..))")
    public void pointcut() {}
    .......
}

@Before

前置增强，配合@Pointcut一起使用

@Aspect
@Component
public class AfterThrowingAspect {
    //全路径execution(public String com.cnblogs.hellxz.test.Test.access(String,String))
    @Pointcut("execution(* com.yh.test.*.*(..))")
    public void pointcut() {}
    //前置增强
    @Before("pointcut()")
    public void before(JoinPoint jp){
        System.out.println("我是方法"+jp.getSignature().getName()+"的前置增强！");      
    }
}

@AfterReturning

后置增强，配合@Pointcut一起使用

@Aspect
@Component
public class AfterThrowingAspect {
    @Pointcut("execution(* com.yh.test.*.*(..))")
    public void pointcut() {}
    //前置增强
    @Before("pointcut()")
    public void before(JoinPoint jp){
        System.out.println("我是方法"+jp.getSignature().getName()+"的前置增强！");      
    }
     //后置增强
     @AfterReturning(value = "pointcut()",returning = "obj")
     public void afterReturning(JoinPoint jp,Object obj){
         System.out.println("我是方法"+jp.getSignature().getName()+"的后置增强！"+",返回值为"+obj);
     }
}

@Around

环绕增强，配合@Pointcut一起使用**

@Aspect
@Component
public class AfterThrowingAspect {
   //全路径
   @Pointcut("execution(* com.yh.test.*.*(..))")
    public void pointcut() {}
    //前置增强
    @Before("pointcut()")
    public void before(JoinPoint jp){
        System.out.println("我是方法"+jp.getSignature().getName()+"的前置增强！");      
    }
     //后置增强
     @AfterReturning(value = "pointcut()",returning = "obj")
     public void afterReturning(JoinPoint jp,Object obj){
         System.out.println("我是方法"+jp.getSignature().getName()+"的后置增强！"+",返回值为"+obj);
     }
     //环绕增强
     @Around("pointcut()")
     public void around(ProceedingJoinPoint jp) throws Throwable {
         System.out.println("我是环绕增强中的前置增强！");
         Object proceed = jp.proceed();//植入目标方法
         System.out.println("我是环绕增强中的后置增强！");
     }
}

@AfterThrowing

异常抛出增强，配合@Pointcut一起使用**

@Aspect
@Component
public class AfterThrowingAspect {
    @Pointcut("execution(* com.yh.test.*.*(..))")
    public void pointcut() {}
    //前置增强
    @Before("pointcut()")
    public void before(JoinPoint jp){
        System.out.println("我是方法"+jp.getSignature().getName()+"的前置增强！");      
    }
     //后置增强
     @AfterReturning(value = "pointcut()",returning = "obj")
     public void afterReturning(JoinPoint jp,Object obj){
         System.out.println("我是方法"+jp.getSignature().getName()+"的后置增强！"+",返回值为"+obj);
     }
     //环绕增强
     @Around("pointcut()")
     public void around(ProceedingJoinPoint jp) throws Throwable {
         System.out.println("我是环绕增强中的前置增强！");
         Object proceed = jp.proceed();//植入目标方法
         System.out.println("我是环绕增强中的后置增强！");
     }
     //异常抛出增强
     @AfterThrowing(value = "pointcut()",throwing = "e")
     public void error(JoinPoint jp,Exception e){
         System.out.println("我是异常抛出增强"+",异常为："+e.getMessage());
     }
}

@After

最终增强(最后执行)，配合@Pointcut一起使用**

@Aspect
@Component
public class AfterThrowingAspect {
    //全路径execution(public String com.cnblogs.hellxz.test.Test.access(String,String))
    @Pointcut("execution(* com.cnblogs.hellxz.test.*.*(..))")
    public void pointcut() {}
    //前置增强
    @Before("pointcut()")
    public void before(JoinPoint jp){
        System.out.println("我是方法"+jp.getSignature().getName()+"的前置增强！");      
    }
     //后置增强
     @AfterReturning(value = "pointcut()",returning = "obj")
     public void afterReturning(JoinPoint jp,Object obj){
         System.out.println("我是方法"+jp.getSignature().getName()+"的后置增强！"+",返回值为"+obj);
     }
     //环绕增强
     @Around("pointcut()")
     public void around(ProceedingJoinPoint jp) throws Throwable {
         System.out.println("我是环绕增强中的前置增强！");
         Object proceed = jp.proceed();//植入目标方法
         System.out.println("我是环绕增强中的后置增强！");
     }
     //异常抛出增强
     @AfterThrowing(value = "pointcut()",throwing = "e")
     public void error(JoinPoint jp,Exception e){
         System.out.println("我是异常抛出增强"+",异常为："+e.getMessage());
     }
     //最终增强
     @After("pointcut()")
     public void after(JoinPoint jp){
         System.out.println("我是最终增强");
     }
}