Package org.springframework.context
Interface ApplicationContext
- All Superinterfaces:
ApplicationEventPublisher,BeanFactory,EnvironmentCapable,HierarchicalBeanFactory,ListableBeanFactory,MessageSource,ResourceLoader,ResourcePatternResolver
- All Known Subinterfaces:
ConfigurableApplicationContext,ConfigurablePortletApplicationContext,ConfigurableWebApplicationContext,WebApplicationContext
- All Known Implementing Classes:
AbstractApplicationContext,AbstractRefreshableApplicationContext,AbstractRefreshableConfigApplicationContext,AbstractRefreshablePortletApplicationContext,AbstractRefreshableWebApplicationContext,AbstractXmlApplicationContext,AnnotationConfigApplicationContext,AnnotationConfigWebApplicationContext,ClassPathXmlApplicationContext,FileSystemXmlApplicationContext,GenericApplicationContext,GenericGroovyApplicationContext,GenericWebApplicationContext,GenericXmlApplicationContext,GroovyWebApplicationContext,ResourceAdapterApplicationContext,StaticApplicationContext,StaticPortletApplicationContext,StaticWebApplicationContext,XmlPortletApplicationContext,XmlWebApplicationContext
public interface ApplicationContext extends EnvironmentCapable, ListableBeanFactory, HierarchicalBeanFactory, MessageSource, ApplicationEventPublisher, ResourcePatternResolver
Central interface to provide configuration for an application. This is read-only while the application is running, but may be reloaded if the implementation supports this.An ApplicationContext provides:
- Bean factory methods for accessing application components. Inherited from
ListableBeanFactory. - The ability to load file resources in a generic fashion. Inherited from the
ResourceLoaderinterface. - The ability to publish events to registered listeners. Inherited from the
ApplicationEventPublisherinterface. - The ability to resolve messages, supporting internationalization. Inherited from the
MessageSourceinterface. - Inheritance from a parent context. Definitions in a descendant context will always take priority. This means, for example, that a single parent context can be used by an entire web application, while each servlet has its own child context that is independent of that of any other servlet.
In addition to standard
BeanFactorylifecycle capabilities, ApplicationContext implementations detect and invokeApplicationContextAwarebeans as well asResourceLoaderAware,ApplicationEventPublisherAwareandMessageSourceAwarebeans.- Author:
- Rod Johnson, Juergen Hoeller
- See Also:
ConfigurableApplicationContext,BeanFactory,ResourceLoader
Field Summary
Fields inherited from interface org.springframework.beans.factory.BeanFactory
FACTORY_BEAN_PREFIX
Fields inherited from interface org.springframework.core.io.ResourceLoader
CLASSPATH_URL_PREFIX
Fields inherited from interface org.springframework.core.io.support.ResourcePatternResolver
CLASSPATH_ALL_URL_PREFIX
Method Summary
All Methods Instance Methods Abstract Methods Modifier and Type Method Description StringgetApplicationName()Return a name for the deployed application that this context belongs to.AutowireCapableBeanFactorygetAutowireCapableBeanFactory()Expose AutowireCapableBeanFactory functionality for this context.StringgetDisplayName()Return a friendly name for this context.StringgetId()Return the unique id of this application context.ApplicationContextgetParent()Return the parent context, ornullif there is no parent and this is the root of the context hierarchy.longgetStartupDate()Return the timestamp when this context was first loaded.Methods inherited from interface org.springframework.context.ApplicationEventPublisher
publishEvent, publishEvent
Methods inherited from interface org.springframework.beans.factory.BeanFactory
containsBean, getAliases, getBean, getBean, getBean, getBean, getBean, getType, isPrototype, isSingleton, isTypeMatch, isTypeMatch
Methods inherited from interface org.springframework.core.env.EnvironmentCapable
getEnvironment
Methods inherited from interface org.springframework.beans.factory.HierarchicalBeanFactory
containsLocalBean, getParentBeanFactory
Methods inherited from interface org.springframework.beans.factory.ListableBeanFactory
containsBeanDefinition, findAnnotationOnBean, getBeanDefinitionCount, getBeanDefinitionNames, getBeanNamesForAnnotation, getBeanNamesForType, getBeanNamesForType, getBeanNamesForType, getBeansOfType, getBeansOfType, getBeansWithAnnotation
Methods inherited from interface org.springframework.context.MessageSource
getMessage, getMessage, getMessage
Methods inherited from interface org.springframework.core.io.ResourceLoader
getClassLoader, getResource
Methods inherited from interface org.springframework.core.io.support.ResourcePatternResolver
getResources
Method Detail
getId
String getId()
Return the unique id of this application context.- Returns:
- the unique id of the context, or
nullif none
getApplicationName
String getApplicationName()
Return a name for the deployed application that this context belongs to.- Returns:
- a name for the deployed application, or the empty String by default
getDisplayName
String getDisplayName()
Return a friendly name for this context.- Returns:
- a display name for this context (never
null)
getStartupDate
long getStartupDate()
Return the timestamp when this context was first loaded.- Returns:
- the timestamp (ms) when this context was first loaded
getParent
ApplicationContext getParent()
Return the parent context, ornullif there is no parent and this is the root of the context hierarchy.- Returns:
- the parent context, or
nullif there is no parent
getAutowireCapableBeanFactory
AutowireCapableBeanFactory getAutowireCapableBeanFactory() throws IllegalStateException
Expose AutowireCapableBeanFactory functionality for this context.This is not typically used by application code, except for the purpose of initializing bean instances that live outside of the application context, applying the Spring bean lifecycle (fully or partly) to them.
Alternatively, the internal BeanFactory exposed by the
ConfigurableApplicationContextinterface offers access to theAutowireCapableBeanFactoryinterface too. The present method mainly serves as a convenient, specific facility on the ApplicationContext interface.NOTE: As of 4.2, this method will consistently throw IllegalStateException after the application context has been closed. In current Spring Framework versions, only refreshable application contexts behave that way; as of 4.2, all application context implementations will be required to comply.
- Returns:
- the AutowireCapableBeanFactory for this context
- Throws:
IllegalStateException- if the context does not support theAutowireCapableBeanFactoryinterface, or does not hold an autowire-capable bean factory yet (e.g. ifrefresh()has never been called), or if the context has been closed already- See Also:
ConfigurableApplicationContext.refresh(),ConfigurableApplicationContext.getBeanFactory()