Example for using Spring AOP with a component that declares a dependency via @Autowired on constructor.

Application.java

package demo;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;

@Configuration
@ComponentScan
@EnableAutoConfiguration
public class Application {

	public static void main(String[] args) {

		try (ConfigurableApplicationContext ctx = SpringApplication.run(Application.class, args)) {

			BusinessComponent bc = ctx.getBean(BusinessComponent.class);
			bc.someMethod();
		}
	}
}

BusinessComponent.java

package demo;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

@Component
public class BusinessComponent {

	private final Dependency dependency;

	@Autowired
	public BusinessComponent(Dependency dependency) {
		this.dependency = dependency;
	}

	public void someMethod() {
		System.out.printf("someMethod: %s%n", dependency);
	}
}

ConcreteDependency.java

package demo;

import org.springframework.stereotype.Component;

@Component
public class ConcreteDependency implements Dependency {}

Dependency.java

package demo;

public interface Dependency {}

pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
	<modelVersion>4.0.0</modelVersion>

	<groupId>org.test</groupId>
	<artifactId>spring-boot-aop-example</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<packaging>jar</packaging>

	<name>spring-boot-aop-example</name>
	<description>Demo project for Spring Boot</description>

	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>1.1.8.RELEASE</version>
		<relativePath/> <!-- lookup parent from repository -->
	</parent>

	<dependencies>
		
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-aop</artifactId>
		</dependency>

		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-test</artifactId>
			<scope>test</scope>
		</dependency>
	</dependencies>

	<properties>
		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
		<start-class>demo.Application</start-class>
		<java.version>1.8</java.version>
	</properties>

	<build>
		<plugins>
			<plugin>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-maven-plugin</artifactId>
			</plugin>
		</plugins>
	</build>

</project>

TracingAspect.java

package demo;

import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.springframework.stereotype.Component;

@Aspect
@Component
public class TracingAspect {

	@Around("execution(* * ..BusinessComponent.*(..))")
	public Object trace(ProceedingJoinPoint joinPoint) throws Throwable {

		try {
			System.out.printf("Before: %s%n", joinPoint);
			return joinPoint.proceed();
		} finally {
			System.out.printf("After: %s%n", joinPoint);
		}
	}
}