Spring: Using @Qualifier with Property Placeholder

Question

I am trying to use a property placeholder as the attribute for @Qualifier, as follows:

@Autowired
@Qualifier(\"${beanName}\")
private MyBean myBean;
<         


        

Answer 1

I encountered exactly same issue. Just use Resource

@Resource(name="${beanName}")
private MyBean myBean;

Answer 2

Just a try (don't really known the problem to solve) . You can use fixed bean name as usual (autowire with placeholder is not supported) but you can load different bean implementation from different xml based on property value.
. Else think about a solution based on bean alias. My 2 cents

Answer 3

I can't leave a comment so this is my answer:

As Adam B said maybe you can use spring profiles to achieve the result you are aiming to (wich result are you aiming?).

Another thing you can do is:

configure a map (using the spring util namespace) in your xml context configuration like this:

 <util:map id="mapId" key-type="java.lang.String" value-type="com.xxx.interface-or-superclass">
        <beans:entry key="${property.bean.name.1}" value-ref="bean1-defined-elsewehere"/>
        <beans:entry key="${property.bean.name.2}" value-ref="bean2-defined-elsewehere"/>
        <beans:entry key="${property.bean.name.3}" value-ref="bean3-defined-elsewehere"/>
  </util:map> 

then you can load this map in a bean called eg. "com.xxx.BeanSelector"

@Value("#{mapId}")
private Map<String, com.xxx.interface-or-superclass> myMap;

and add to this bean a methos like this:

public interface-or-superclass getBean(String beanName){
    return myMap.get(beanName);
}

ok now you can have your final class similar to this:

@Autowired
private BeanSelector beanSelector;

@Value("${property.name.the.bean.you.want.to.use}")
private String beanName;

private interface-or-superclass myBean;

then you can istantiate myBean (maybe inside the method afterPropertiesSet() if you are implementing the interface InitializingBean)

in this way:

myBean = beanSelector.getBean(beanName);
// then check ifthe bean is not null or something like that

Ok it's a little messy and maybe you can act in a different way based on what you want achieve, but it's a workaround.