Spring prefix using @ConfigurationProperties with @Value in the constructor

Question

I am running my application with Spring Boot (1.2.0.RELEASE) using the @SpringBootApplication annotation.

What I try to achieve is to have the following without using long prefixes in each @Value annotation:

application.properties

prefix.key1=value1
prefix.key2=value2

DefaultService.java

@Service
@ConfigurationProperties("prefix")
public class DefaultService implements Service {
    private final String key1;
    private final String key2;

    @Autowired
    public DefaultService(@Value("${key1}") final String key1, @Value("${key2}") final String key2) {
        this.key1 = key1;
        this.key2 = key2;
    }
}

I know that this can be done without using @Value and in need of setters (@ConfigurationProperties prefix not working) or with http://docs.spring.io/spring-boot/docs/1.2.0.RELEASE/reference/htmlsingle/#boot-features-external-config-typesafe-configuration-properties but I try to achieve it in the constructor.

Answer 1

I am not sure about the usage of @value, but the following works for me

@Service
@ConfigurationProperties(prefix="prefix")
public class DefaultService {
    private String key1;
    private String key2;


    @PostConstruct
    public void report(){
        System.out.println(String.format("key1=%s,key2=%s", key1,key2));
    }
    public void setKey1(String key1) {
        this.key1 = key1;
    }

    public void setKey2(String key2) {
        this.key2 = key2;
    }

application.properties

prefix.key1=value1
prefix.key2=value2