Maven project structure is as follows

pom.xml and SpringBoot related content

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>1.5.8.RELEASE</version>
</parent>
<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-aop</artifactId>
    </dependency>
</dependencies>

SampleController.java

@Controller
@EnableAutoConfiguration
@ComponentScan
public class SampleController {
 
    @RequestMapping("/")
    @ResponseBody
    String home() {
        return "Hello World!";
    }
 
    public static void main(String[] args) throws Exception {
        SpringApplication.run(SampleController.class, args);
    }
    
}

CustomAspect

@Aspect
@Component
public class CustomAspect {

    @Pointcut("execution(public * com.demo..*.*(..))")
    public void customPoint(){}
    
    @Before(value = "customPoint()")
    public void deBefore(JoinPoint joinPoint) throws Throwable {
        System.out.println("...");
    }
    
}

visit the http://localhost:8080/ page to display Hello word!
but does not show AOP interception information [intercept request.] and no exception is reported. I hope you can"t find the problem