@Value not resolved when using @PropertySource annotation. How to configure PropertySourcesPlaceholderConfigurer?

Question

I have following configuration class:

@Configuration
@PropertySource(name = \"props\", value = \"classpath:/app-config.properties\")
@ComponentScan(\"service         


        

Answer 1

If you use @PropertySource, properties have to be retrieved with:

@Autowired
Environment env;
// ...
String subject = env.getProperty("mail.subject");

If you want to retrieve with @Value("${mail.subject}"), you have to register the prop placeholder by xml.

Reason: https://jira.springsource.org/browse/SPR-8539