Spring @EnableAspectJAutoProxy Example
February 21, 2022
@EnableAspectJAutoProxy annotation enables support for handling components marked with @Aspect annotation of AspectJ. The @EnableAspectJAutoProxy is used on @Configuration classes. The @EnableAspectJAutoProxy is equivalent to <aop:aspectj-autoproxy> XML element.
Example
Find the dependency for Spring AOP.<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-aop</artifactId> </dependency>
package com.concretepage;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.EnableAspectJAutoProxy;
@Configuration
@EnableAspectJAutoProxy
public class AppConfig {
@Bean
public UserService userService(){
return new UserService();
}
@Bean
public UserAspect userAspect(){
return new UserAspect();
}
}
package com.concretepage;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
@Aspect
public class UserAspect {
@Before("execution(* com.concretepage.UserService+.*(..))")
public void userAdvice(){
System.out.println("My advice before execution.");
}
}
package com.concretepage;
public class UserService {
public void read() {
System.out.println("I am reading Ramayan");
}
}
package com.concretepage;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
public class SpringDemo {
public static void main(String[] args) {
AnnotationConfigApplicationContext ctx = new AnnotationConfigApplicationContext();
ctx.register(AppConfig.class);
ctx.refresh();
UserService userService= ctx.getBean(UserService.class);
userService.read();
}
}
My advice before execution. I am reading Ramayan
