Class ControllerAdviceBean
- java.lang.Object
- org.springframework.web.method.ControllerAdviceBean
- All Implemented Interfaces:
Ordered
public class ControllerAdviceBean extends Object implements Ordered
Encapsulates information about an@ControllerAdvice
Spring-managed bean without necessarily requiring it to be instantiated.The
findAnnotatedBeans(ApplicationContext)
method can be used to discover such beans. However, aControllerAdviceBean
may be created from any object, including ones without an@ControllerAdvice
annotation.- Since:
- 3.2
- Author:
- Rossen Stoyanchev, Brian Clozel, Juergen Hoeller, Sam Brannen
Field Summary
Fields inherited from interface org.springframework.core.Ordered
HIGHEST_PRECEDENCE, LOWEST_PRECEDENCE
Constructor Summary
Constructors Constructor Description ControllerAdviceBean(Object bean)
Create aControllerAdviceBean
using the given bean instance.ControllerAdviceBean(String beanName, BeanFactory beanFactory)
Create aControllerAdviceBean
using the given bean name andBeanFactory
.ControllerAdviceBean(String beanName, BeanFactory beanFactory, ControllerAdvice controllerAdvice)
Create aControllerAdviceBean
using the given bean name,BeanFactory
, and@ControllerAdvice
annotation.
Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description boolean
equals(Object other)
static List<ControllerAdviceBean>
findAnnotatedBeans(ApplicationContext context)
Find beans annotated with@ControllerAdvice
in the givenApplicationContext
and wrap them asControllerAdviceBean
instances.Class<?>
getBeanType()
Return the type of the contained bean.int
getOrder()
Get the order value for the contained bean.int
hashCode()
boolean
isApplicableToBeanType(Class<?> beanType)
Check whether the given bean type should be advised by thisControllerAdviceBean
.Object
resolveBean()
Get the bean instance for thisControllerAdviceBean
, if necessary resolving the bean name through theBeanFactory
.String
toString()
Constructor Detail
ControllerAdviceBean
public ControllerAdviceBean(Object bean)
Create aControllerAdviceBean
using the given bean instance.- Parameters:
bean
- the bean instance
ControllerAdviceBean
public ControllerAdviceBean(String beanName, BeanFactory beanFactory)
Create aControllerAdviceBean
using the given bean name andBeanFactory
.- Parameters:
beanName
- the name of the beanbeanFactory
- aBeanFactory
to retrieve the bean type initially and later to resolve the actual bean
ControllerAdviceBean
public ControllerAdviceBean(String beanName, BeanFactory beanFactory, @Nullable ControllerAdvice controllerAdvice)
Create aControllerAdviceBean
using the given bean name,BeanFactory
, and@ControllerAdvice
annotation.- Parameters:
beanName
- the name of the beanbeanFactory
- aBeanFactory
to retrieve the bean type initially and later to resolve the actual beancontrollerAdvice
- the@ControllerAdvice
annotation for the bean, ornull
if not yet retrieved- Since:
- 5.2
Method Detail
getOrder
public int getOrder()
Get the order value for the contained bean.As of Spring Framework 5.2, the order value is lazily retrieved using the following algorithm and cached. Note, however, that a
@ControllerAdvice
bean that is configured as a scoped bean — for example, as a request-scoped or session-scoped bean — will not be eagerly resolved. Consequently,Ordered
is not honored for scoped@ControllerAdvice
beans.- If the resolved bean implements
Ordered
, use the value returned byOrdered.getOrder()
. - If the bean type is known, use the value returned by
OrderUtils.getOrder(Class, int)
withOrdered.LOWEST_PRECEDENCE
used as the default order value. - Otherwise use
Ordered.LOWEST_PRECEDENCE
as the default, fallback order value.
- Specified by:
getOrder
in interfaceOrdered
- Returns:
- the order value
- See Also:
resolveBean()
- If the resolved bean implements
getBeanType
@Nullable public Class<?> getBeanType()
Return the type of the contained bean.If the bean type is a CGLIB-generated class, the original user-defined class is returned.
resolveBean
public Object resolveBean()
Get the bean instance for thisControllerAdviceBean
, if necessary resolving the bean name through theBeanFactory
.As of Spring Framework 5.2, once the bean instance has been resolved it will be cached if it is a singleton, thereby avoiding repeated lookups in the
BeanFactory
.
isApplicableToBeanType
public boolean isApplicableToBeanType(@Nullable Class<?> beanType)
Check whether the given bean type should be advised by thisControllerAdviceBean
.- Parameters:
beanType
- the type of the bean to check- Since:
- 4.0
- See Also:
ControllerAdvice
findAnnotatedBeans
public static List<ControllerAdviceBean> findAnnotatedBeans(ApplicationContext context)
Find beans annotated with@ControllerAdvice
in the givenApplicationContext
and wrap them asControllerAdviceBean
instances.As of Spring Framework 5.2, the
ControllerAdviceBean
instances in the returned list are sorted usingOrderComparator.sort(List)
.- See Also:
getOrder()
,OrderComparator
,Ordered