|
|||||||||
| PREV CLASS NEXT CLASS | FRAMES NO FRAMES | ||||||||
| SUMMARY: REQUIRED | OPTIONAL | DETAIL: ELEMENT | ||||||||
@Target(value={FIELD,METHOD,PARAMETER})
@Retention(value=RUNTIME)
@Documented
public @interface ValueAnnotation at the field or method/constructor parameter level that indicates a default value expression for the affected argument.
Typically used for expression-driven dependency injection. Also supported for dynamic resolution of handler method parameters, e.g. in Spring MVC.
A common use case is to assign default field values using "#{systemProperties.myProp}" style expressions.
Note that actual processing of the @Value annotation is performed
by a BeanPostProcessor which in turn means that you cannot use
@Value within
BeanPostProcessor or BeanFactoryPostProcessor types. Please
consult the javadoc for the AutowiredAnnotationBeanPostProcessor
class (which, by default, checks for the presence of this annotation).
AutowiredAnnotationBeanPostProcessor,
Autowired,
BeanExpressionResolver,
AutowireCandidateResolver.getSuggestedValue(org.springframework.beans.factory.config.DependencyDescriptor)| Required Element Summary | |
|---|---|
String |
value
The actual value expression: e.g. |
| Element Detail |
|---|
public abstract String value
|
|||||||||
| PREV CLASS NEXT CLASS | FRAMES NO FRAMES | ||||||||
| SUMMARY: REQUIRED | OPTIONAL | DETAIL: ELEMENT | ||||||||