server.context-path=/product
server.port=8080

author.name=Product
author.age=25

server.context-path=/dev
server.port=9090

author.name=Dev
author.age=21

@ SpringBootApplication(scanBasePackages = "com.example")
@RestController
public class DemoApplication {

 @Autowired
 private Author author;

 @RequestMapping("/")
 public String index() {
 return "Hello " + author.getName() + ",Your age is " + author.getAge();
 }

 public static void main(String[] args) {
  SpringApplication.run(DemoApplication.class, args);
 }
}

@Component
@ConfigurationProperties(prefix = "author")
public class Author {
 private String name;
 private Long age;

 public String getName() {
 return name;
 }

 public void setName(String name) {
 this.name = name;
 }

 public Long getAge() {
 return age;
 }

 public void setAge(Long age) {
 this.age = age;
 }

}

spring.profiles.active=dev