Spring 3.2 @value annotation with pure java configuration does not work, but Environment.getProperty works
I've been breaking my head on this one. Not sure what I am missing. I am unable to get the @Value
annotations to work in a pure java configured spring app(non web)
@Configuration
@PropertySource("classpath:app.properties")
public class Config {
@Value("${my.prop}")
String name;
@Autowired
Environment env;
@Bean(name = "myBean", initMethod = "print")
public MyBean getMyBean(){
MyBean myBean = new MyBean();
myBean.setName(name);
System.out.println(env.getProperty("my.prop"));
return myBean;
}
}
The property file just contains my.prop=avalue
The bean is as follows:
public class MyBean {
String name;
public void print() {
System.out.println("Name: " + name);
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
The environment variable prints the value properly, the @Value
does not.avalue
Name: ${my.prop}
The main class just initializes the context.
AnnotationConfigApplicationContext ctx = new AnnotationConfigApplicationContext(Config.class);
However if I use
@ImportResource("classpath:property-config.xml")
with this snippet
<context:property-placeholder location="app.properties" />
then it works fine. Of course now the enviroment returns null
.
Add the following bean declaration in your Config
class
@Bean
public static PropertySourcesPlaceholderConfigurer propertyPlaceholderConfigurer() {
return new PropertySourcesPlaceholderConfigurer();
}
In order for @Value
annotations to work PropertySourcesPlaceholderConfigurer
should be registered. It is done automatically when using <context:property-placeholder>
in XML, but should be registered as a static @Bean
when using @Configuration
.
See @PropertySource documentation and this Spring Framework Jira issue.