In Spring we can use the @Value annotation to set property or arguments values based on a SpEL expression. If we want to use the @Value annotation for a constructor argument we must not forget to add the @Autowired annotation on the constructor as well.
// File: sample/Message.groovy
package sample
import org.springframework.beans.factory.annotation.*
import org.springframework.stereotype.*
@Component
class Message {
final String text
// Use @Autowired to get @Value to work.
@Autowired
Message(
// Refer to configuration property
// app.message.text to set value for
// constructor argument text.
@Value('${app.message.text}') final String text) {
this.text = text
}
}
Written with Spring 4.1.6.
