like the title suggests I want to access another fields value using springs @Value annotation.
I want to do this to resolve the fields value by another fields id. Eg.: I have a field id and a field idContent. The idContent field should be automatically created by a method call to another bean using the id fields value.
I tried something like this:
public class MyBean {
// This is set beforehand
private final String id;
@Value("#{otherBean.resolve(#id)}")
private SomeObject idObject;
}
I get the following message back: org.springframework.beans.factory.BeanExpressionException: Expression parsing failed
This could be done in plain java using constructor injection instead of field injection
@Component
public class MyBean {
private final String id;
private final SomeObject idObject;
public MyBean(@Value("${id}") String id, OtherBean otherBean) {
this.id = id;
this.idObject = otherBean.resolve(id);
}
...
}
Another option is to implement InitializingBean
@Component
public class MyBean implements InitializingBean {
@Value("${id}")
private String id;
@Autowired
private OtherBean otherBean;
private SomeObject idObject;
@Override
public void afterPropertiesSet() {
this.idObject = otherBean.resolve(id);
}
}
I personally dislike field injection and always use constructor injection and final fields.