How to pick spring option arguments at run time in java class

Question

I want to know how to pick spring option arguments like

--server.port , --spring.config.name

in a java class.

Basically I want to know the value of this argument at run time to load some property

Possible duplicate of [How to access a value defined in the application.properties file in Spring Boot](https://stackoverflow.com/questions/30528255/how-to-access-a-value-defined-in-the-application-properties-file-in-spring-boot) — dZ., Apr 22 '19 at 13:06

score 0 · Answer 1 · answered Apr 22 '19 at 10:31

0

You can access them in your application's main() method. A great blog about this topic covers it in detail. Following is how you can do it.

@SpringBootApplication
public class Application extends SpringBootServletInitializer {
    public static void main(String[] args) {
        for(String arg:args) {
            System.out.println(arg);
        }
        SpringApplication.run(Application.class, args);
    }
}

answered Apr 22 '19 at 10:31

Adil Khalil

2,073
3
21
33

Hi Adil, Thanks for your response. But in particular, I want to know it through some annotation. – Somil Aseeja Apr 22 '19 at 10:33
look at https://memorynotfound.com/spring-boot-passing-command-line-arguments-example/, you can later do something like "@Value("server.port") – Adil Khalil Apr 22 '19 at 10:38
I looked at these articles earlier but these are not working. – Somil Aseeja Apr 22 '19 at 10:42
you need to fetch the property values in java class ryt? correct me if I'm wrong – Akhil S Kamath Apr 22 '19 at 10:46
@AkhilSK Yes using some annotations or something like this. @Value("${spring.config.name}") private String springConfigName; – Somil Aseeja Apr 22 '19 at 10:57

Akhil S Kamath · Answer 2 · 2019-04-22T12:13:17.193

Please try using spring org.springframework.core.env.Environment,

public class MyService {

    @Autowired
    private Environment env;

    public String getPropertyValue(String key) {
            return env.getProperty(key);
    }
}

OR

In application-<env>.propeties (if using spring.profiles) else application.properties

myapp.property=007

In your class :

@Value("${myapp.property}")
private String myProperty;

How to pick spring option arguments at run time in java class

2 Answers2