1 依赖

springboot的2.3.0.RELEASE版本构建，需要导入aop的starter；

        
            org.springframework.boot
            spring-boot-starter-aop
        
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2 第一种 AspectJExpressionPointcut定义切点

public class MyInterceptor implements MethodInterceptor {
    @Override
    public Object invoke(MethodInvocation methodInvocation) throws Throwable {
        System.out.println(methodInvocation.getMethod().getName());
        return methodInvocation.proceed();
    }
}

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@Configuration
public class InterceptorConfig {
   //注意该地址为项目具体包地址
   public static final String traceExecution = "execution(* com.example.methodinterceptor..*.*(..))";
   @Bean
    public DefaultPointcutAdvisor defaultPointcutAdvisor2() {
        MyInterceptor interceptor = new MyInterceptor();
        AspectJExpressionPointcut pointcut = new AspectJExpressionPointcut();
        pointcut.setExpression(traceExecution);

        // 配置增强类advisor
        DefaultPointcutAdvisor advisor = new DefaultPointcutAdvisor();
        advisor.setPointcut(pointcut);
        advisor.setAdvice(interceptor);
        return advisor;
    }
}
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3 第二种 JdkRegexpMethodPointcut来构造切点

public class MyInterceptor implements MethodInterceptor {
    @Override
    public Object invoke(MethodInvocation methodInvocation) throws Throwable {
        System.out.println(methodInvocation.getMethod().getName());
        return methodInvocation.proceed();
    }
}
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@Configuration
public class InterceptorConfig {
     @Bean
    public DefaultPointcutAdvisor defaultPointcutAdvisor() {
        JdkRegexpMethodPointcut pointcut = new JdkRegexpMethodPointcut();
        pointcut.setPattern("com.example.methodinterceptor.*");
        // 配置增强类advisor
        DefaultPointcutAdvisor advisor = new DefaultPointcutAdvisor();
        advisor.setPointcut(pointcut);
        advisor.setAdvice(new MyInterceptor());
        System.out.println(advisor.toString());
        return advisor;
    }
}
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4 第三种

只是在第一种基础上，将AspectJExpressionPointcut的参数改变了Expression;
直接使用案例一代码，然后将traceExecution修改就可以了

public static final String traceExecution = “annotation(com.example.methodinterceptor.annotation.InterceptorAnnotation)”;

5 第四种 AnnotationMatchingPointcut来构造切点

public class MyInterceptor implements MethodInterceptor {
    @Override
    public Object invoke(MethodInvocation methodInvocation) throws Throwable {
        System.out.println(methodInvocation.getMethod().getName());
        return methodInvocation.proceed();
    }
}

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使用AnnotationMatchingPointcut构造切点
注意： 这是使用的AnnotationMatchingPointcut构造方法；在参考文章1中使用的是：
AnnotationMatchingPointcut pointcut = new AnnotationMatchingPointcut(InterceptorAnnotation.class, true);
这个写法并没有对该注解进行拦截；在文章末尾的评论有提到这个问题；

@Configuration
public class InterceptorConfig {
     @Bean
    public Advisor pointcutAdvisor() {
        MyInterceptor interceptor = new MyInterceptor();

        AnnotationMatchingPointcut pointcut = new AnnotationMatchingPointcut(null,InterceptorAnnotation.class);
        // 配置增强类advisor
        DefaultPointcutAdvisor advisor = new DefaultPointcutAdvisor();
        advisor.setPointcut(pointcut);
        advisor.setAdvice(interceptor);
        System.out.println(advisor.toString());
        return advisor;
    }
}
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