org.springframework.context.support

Class AbstractApplicationContext

java.lang.Object

org.springframework.core.io.DefaultResourceLoader

org.springframework.context.support.AbstractApplicationContext

All Implemented Interfaces:

Closeable, AutoCloseable, org.springframework.beans.factory.BeanFactory, org.springframework.beans.factory.HierarchicalBeanFactory, org.springframework.beans.factory.ListableBeanFactory, ApplicationContext, ApplicationEventPublisher, ConfigurableApplicationContext, Lifecycle, MessageSource, org.springframework.core.env.EnvironmentCapable, org.springframework.core.io.ResourceLoader, org.springframework.core.io.support.ResourcePatternResolver

Direct Known Subclasses:

AbstractRefreshableApplicationContext, GenericApplicationContext

public abstract class AbstractApplicationContext
extends org.springframework.core.io.DefaultResourceLoader
implements ConfigurableApplicationContext

Abstract implementation of the ApplicationContext interface. Doesn't mandate the type of storage used for configuration; simply implements common context functionality. Uses the Template Method design pattern, requiring concrete subclasses to implement abstract methods.

In contrast to a plain BeanFactory, an ApplicationContext is supposed to detect special beans defined in its internal bean factory: Therefore, this class automatically registers BeanFactoryPostProcessors, BeanPostProcessors, and ApplicationListeners which are defined as beans in the context.

A MessageSource may also be supplied as a bean in the context, with the name "messageSource"; otherwise, message resolution is delegated to the parent context. Furthermore, a multicaster for application events can be supplied as an "applicationEventMulticaster" bean of type ApplicationEventMulticaster in the context; otherwise, a default multicaster of type SimpleApplicationEventMulticaster will be used.

Implements resource loading by extending DefaultResourceLoader. Consequently treats non-URL resource paths as class path resources (supporting full class path resource names that include the package path, e.g. "mypackage/myresource.dat"), unless the DefaultResourceLoader.getResourceByPath(java.lang.String) method is overridden in a subclass.

Since:

January 21, 2001

Author:

Rod Johnson, Juergen Hoeller, Mark Fisher, Stephane Nicoll, Sam Brannen, Sebastien Deleuze, Brian Clozel

See Also:

refreshBeanFactory(), getBeanFactory(), BeanFactoryPostProcessor, BeanPostProcessor, ApplicationEventMulticaster, ApplicationListener, MessageSource

Nested Class Summary

Nested classes/interfaces inherited from class org.springframework.core.io.DefaultResourceLoader

org.springframework.core.io.DefaultResourceLoader.ClassPathContextResource

Field Summary

Fields

Modifier and Type	Field and Description
static String	APPLICATION_EVENT_MULTICASTER_BEAN_NAME Name of the ApplicationEventMulticaster bean in the factory.
static String	LIFECYCLE_PROCESSOR_BEAN_NAME Name of the LifecycleProcessor bean in the factory.
protected Log	logger Logger used by this class.
static String	MESSAGE_SOURCE_BEAN_NAME Name of the MessageSource bean in the factory.

Fields inherited from interface org.springframework.context.ConfigurableApplicationContext

APPLICATION_STARTUP_BEAN_NAME, CONFIG_LOCATION_DELIMITERS, CONVERSION_SERVICE_BEAN_NAME, ENVIRONMENT_BEAN_NAME, LOAD_TIME_WEAVER_BEAN_NAME, SHUTDOWN_HOOK_THREAD_NAME, SYSTEM_ENVIRONMENT_BEAN_NAME, SYSTEM_PROPERTIES_BEAN_NAME

Fields inherited from interface org.springframework.beans.factory.BeanFactory

FACTORY_BEAN_PREFIX

Fields inherited from interface org.springframework.core.io.support.ResourcePatternResolver

CLASSPATH_ALL_URL_PREFIX

Fields inherited from interface org.springframework.core.io.ResourceLoader

CLASSPATH_URL_PREFIX

Constructor Summary

Constructors

Constructor and Description
AbstractApplicationContext() Create a new AbstractApplicationContext with no parent.
AbstractApplicationContext(ApplicationContext parent) Create a new AbstractApplicationContext with the given parent context.

Method Summary

Modifier and Type	Method and Description
void	addApplicationListener(ApplicationListener<?> listener) Add a new ApplicationListener that will be notified on context events such as context refresh and context shutdown.
void	addBeanFactoryPostProcessor(org.springframework.beans.factory.config.BeanFactoryPostProcessor postProcessor) Add a new BeanFactoryPostProcessor that will get applied to the internal bean factory of this application context on refresh, before any of the bean definitions get evaluated.
protected void	assertBeanFactoryActive() Assert that this context's BeanFactory is currently active, throwing an IllegalStateException if it isn't.
protected void	cancelRefresh(org.springframework.beans.BeansException ex) Cancel this context's refresh attempt, resetting the active flag after an exception got thrown.
void	close() Close this application context, destroying all beans in its bean factory.
protected abstract void	closeBeanFactory() Subclasses must implement this method to release their internal bean factory.
boolean	containsBean(String name)
boolean	containsBeanDefinition(String beanName)
boolean	containsLocalBean(String name)
protected org.springframework.core.env.ConfigurableEnvironment	createEnvironment() Create and return a new StandardEnvironment.
void	destroy() Deprecated. as of Spring Framework 5.0, in favor of close()
protected void	destroyBeans() Template method for destroying all beans that this context manages.
protected void	doClose() Actually performs context closing: publishes a ContextClosedEvent and destroys the singletons in the bean factory of this application context.
<A extends Annotation> A	findAnnotationOnBean(String beanName, Class<A> annotationType)
<A extends Annotation> A	findAnnotationOnBean(String beanName, Class<A> annotationType, boolean allowFactoryBeanInit)
protected void	finishBeanFactoryInitialization(org.springframework.beans.factory.config.ConfigurableListableBeanFactory beanFactory) Finish the initialization of this context's bean factory, initializing all remaining singleton beans.
protected void	finishRefresh() Finish the refresh of this context, invoking the LifecycleProcessor's onRefresh() method and publishing the ContextRefreshedEvent.
String[]	getAliases(String name)
Collection<ApplicationListener<?>>	getApplicationListeners() Return the list of statically specified ApplicationListeners.
String	getApplicationName() Return a name for the deployed application that this context belongs to.
org.springframework.core.metrics.ApplicationStartup	getApplicationStartup() Return the ApplicationStartup for this application context.
org.springframework.beans.factory.config.AutowireCapableBeanFactory	getAutowireCapableBeanFactory() Return this context's internal bean factory as AutowireCapableBeanFactory, if already available.
<T> T	getBean(Class<T> requiredType)
<T> T	getBean(Class<T> requiredType, Object... args)
Object	getBean(String name)
<T> T	getBean(String name, Class<T> requiredType)
Object	getBean(String name, Object... args)
int	getBeanDefinitionCount()
String[]	getBeanDefinitionNames()
abstract org.springframework.beans.factory.config.ConfigurableListableBeanFactory	getBeanFactory() Subclasses must return their internal bean factory here.
List<org.springframework.beans.factory.config.BeanFactoryPostProcessor>	getBeanFactoryPostProcessors() Return the list of BeanFactoryPostProcessors that will get applied to the internal BeanFactory.
String[]	getBeanNamesForAnnotation(Class<? extends Annotation> annotationType)
String[]	getBeanNamesForType(Class<?> type)
String[]	getBeanNamesForType(Class<?> type, boolean includeNonSingletons, boolean allowEagerInit)
String[]	getBeanNamesForType(org.springframework.core.ResolvableType type)
String[]	getBeanNamesForType(org.springframework.core.ResolvableType type, boolean includeNonSingletons, boolean allowEagerInit)
<T> org.springframework.beans.factory.ObjectProvider<T>	getBeanProvider(Class<T> requiredType)
<T> org.springframework.beans.factory.ObjectProvider<T>	getBeanProvider(Class<T> requiredType, boolean allowEagerInit)
<T> org.springframework.beans.factory.ObjectProvider<T>	getBeanProvider(org.springframework.core.ResolvableType requiredType)
<T> org.springframework.beans.factory.ObjectProvider<T>	getBeanProvider(org.springframework.core.ResolvableType requiredType, boolean allowEagerInit)
<T> Map<String,T>	getBeansOfType(Class<T> type)
<T> Map<String,T>	getBeansOfType(Class<T> type, boolean includeNonSingletons, boolean allowEagerInit)
Map<String,Object>	getBeansWithAnnotation(Class<? extends Annotation> annotationType)
String	getDisplayName() Return a friendly name for this context.
org.springframework.core.env.ConfigurableEnvironment	getEnvironment() Return the Environment for this application context in configurable form, allowing for further customization.
String	getId() Return the unique id of this application context.
protected org.springframework.beans.factory.BeanFactory	getInternalParentBeanFactory() Return the internal bean factory of the parent context if it implements ConfigurableApplicationContext; else, return the parent context itself.
protected MessageSource	getInternalParentMessageSource() Return the internal message source of the parent context if it is an AbstractApplicationContext too; else, return the parent context itself.
String	getMessage(MessageSourceResolvable resolvable, Locale locale) Try to resolve the message using all the attributes contained within the MessageSourceResolvable argument that was passed in.
String	getMessage(String code, Object[] args, Locale locale) Try to resolve the message.
String	getMessage(String code, Object[] args, String defaultMessage, Locale locale) Try to resolve the message.
ApplicationContext	getParent() Return the parent context, or null if there is no parent (that is, this context is the root of the context hierarchy).
org.springframework.beans.factory.BeanFactory	getParentBeanFactory()
protected org.springframework.core.io.support.ResourcePatternResolver	getResourcePatternResolver() Return the ResourcePatternResolver to use for resolving location patterns into Resource instances.
org.springframework.core.io.Resource[]	getResources(String locationPattern)
long	getStartupDate() Return the timestamp (ms) when this context was first loaded.
Class<?>	getType(String name)
Class<?>	getType(String name, boolean allowFactoryBeanInit)
protected void	initApplicationEventMulticaster() Initialize the ApplicationEventMulticaster.
protected void	initLifecycleProcessor() Initialize the LifecycleProcessor.
protected void	initMessageSource() Initialize the MessageSource.
protected void	initPropertySources() Replace any stub property sources with actual instances.
protected void	invokeBeanFactoryPostProcessors(org.springframework.beans.factory.config.ConfigurableListableBeanFactory beanFactory) Instantiate and invoke all registered BeanFactoryPostProcessor beans, respecting explicit order if given.
boolean	isActive() Determine whether this application context is active, that is, whether it has been refreshed at least once and has not been closed yet.
boolean	isPrototype(String name)
boolean	isRunning() Check whether this component is currently running.
boolean	isSingleton(String name)
boolean	isTypeMatch(String name, Class<?> typeToMatch)
boolean	isTypeMatch(String name, org.springframework.core.ResolvableType typeToMatch)
protected org.springframework.beans.factory.config.ConfigurableListableBeanFactory	obtainFreshBeanFactory() Tell the subclass to refresh the internal bean factory.
protected void	onClose() Template method which can be overridden to add context-specific shutdown work.
protected void	onRefresh() Template method which can be overridden to add context-specific refresh work.
protected void	postProcessBeanFactory(org.springframework.beans.factory.config.ConfigurableListableBeanFactory beanFactory) Modify the application context's internal bean factory after its standard initialization.
protected void	prepareBeanFactory(org.springframework.beans.factory.config.ConfigurableListableBeanFactory beanFactory) Configure the factory's standard context characteristics, such as the context's ClassLoader and post-processors.
protected void	prepareRefresh() Prepare this context for refreshing, setting its startup date and active flag as well as performing any initialization of property sources.
void	publishEvent(ApplicationEvent event) Publish the given event to all listeners.
void	publishEvent(Object event) Publish the given event to all listeners.
protected void	publishEvent(Object event, org.springframework.core.ResolvableType eventType) Publish the given event to all listeners.
void	refresh() Load or refresh the persistent representation of the configuration, which might be from Java-based configuration, an XML file, a properties file, a relational database schema, or some other format.
protected abstract void	refreshBeanFactory() Subclasses must implement this method to perform the actual configuration load.
protected void	registerBeanPostProcessors(org.springframework.beans.factory.config.ConfigurableListableBeanFactory beanFactory) Instantiate and register all BeanPostProcessor beans, respecting explicit order if given.
protected void	registerListeners() Add beans that implement ApplicationListener as listeners.
void	registerShutdownHook() Register a shutdown hook named SpringContextShutdownHook with the JVM runtime, closing this context on JVM shutdown unless it has already been closed at that time.
protected void	resetCommonCaches() Reset Spring's common reflection metadata caches, in particular the ReflectionUtils, AnnotationUtils, ResolvableType and CachedIntrospectionResults caches.
void	setApplicationStartup(org.springframework.core.metrics.ApplicationStartup applicationStartup) Set the ApplicationStartup for this application context.
void	setDisplayName(String displayName) Set a friendly name for this context.
void	setEnvironment(org.springframework.core.env.ConfigurableEnvironment environment) Set the Environment for this application context.
void	setId(String id) Set the unique id of this application context.
void	setParent(ApplicationContext parent) Set the parent of this application context.
void	start() Start this component.
void	stop() Stop this component, typically in a synchronous fashion, such that the component is fully stopped upon return of this method.
String	toString() Return information about this context.

Methods inherited from class org.springframework.core.io.DefaultResourceLoader

addProtocolResolver, clearResourceCaches, getClassLoader, getProtocolResolvers, getResource, getResourceByPath, getResourceCache, setClassLoader

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.springframework.context.ConfigurableApplicationContext

addProtocolResolver, setClassLoader

Methods inherited from interface org.springframework.core.io.ResourceLoader

getClassLoader, getResource

Field Detail

MESSAGE_SOURCE_BEAN_NAME

public static final String MESSAGE_SOURCE_BEAN_NAME

Name of the MessageSource bean in the factory. If none is supplied, message resolution is delegated to the parent.

See Also:

MessageSource, Constant Field Values

LIFECYCLE_PROCESSOR_BEAN_NAME

public static final String LIFECYCLE_PROCESSOR_BEAN_NAME

Name of the LifecycleProcessor bean in the factory. If none is supplied, a DefaultLifecycleProcessor is used.

See Also:

LifecycleProcessor, DefaultLifecycleProcessor, Constant Field Values

APPLICATION_EVENT_MULTICASTER_BEAN_NAME

public static final String APPLICATION_EVENT_MULTICASTER_BEAN_NAME

Name of the ApplicationEventMulticaster bean in the factory. If none is supplied, a default SimpleApplicationEventMulticaster is used.

See Also:

ApplicationEventMulticaster, SimpleApplicationEventMulticaster, Constant Field Values

logger

protected final Log logger

Logger used by this class. Available to subclasses.

Constructor Detail

AbstractApplicationContext

public AbstractApplicationContext()

Create a new AbstractApplicationContext with no parent.

AbstractApplicationContext

public AbstractApplicationContext(@Nullable
                                  ApplicationContext parent)

Create a new AbstractApplicationContext with the given parent context.

Parameters:

parent - the parent context

Method Detail

setId

public void setId(String id)

Set the unique id of this application context.

Default is the object id of the context instance, or the name of the context bean if the context is itself defined as a bean.

Specified by:

setId in interface ConfigurableApplicationContext

Parameters:

id - the unique id of the context

getId

public String getId()

Description copied from interface: ApplicationContext

Return the unique id of this application context.

Specified by:

getId in interface ApplicationContext

Returns:

the unique id of the context, or null if none

getApplicationName

public String getApplicationName()

Description copied from interface: ApplicationContext

Return a name for the deployed application that this context belongs to.

Specified by:

getApplicationName in interface ApplicationContext

Returns:

a name for the deployed application, or the empty String by default

setDisplayName

public void setDisplayName(String displayName)

Set a friendly name for this context. Typically done during initialization of concrete context implementations.

Default is the object id of the context instance.

getDisplayName

public String getDisplayName()

Return a friendly name for this context.

Specified by:

getDisplayName in interface ApplicationContext

Returns:

a display name for this context (never null)

getParent

@Nullable
public ApplicationContext getParent()

Return the parent context, or null if there is no parent (that is, this context is the root of the context hierarchy).

Specified by:

getParent in interface ApplicationContext

Returns:

the parent context, or null if there is no parent

setEnvironment

public void setEnvironment(org.springframework.core.env.ConfigurableEnvironment environment)

Set the Environment for this application context.

Default value is determined by createEnvironment(). Replacing the default with this method is one option but configuration through getEnvironment() should also be considered. In either case, such modifications should be performed before refresh().

Specified by:

setEnvironment in interface ConfigurableApplicationContext

Parameters:

environment - the new environment

See Also:

createEnvironment()

getEnvironment

public org.springframework.core.env.ConfigurableEnvironment getEnvironment()

Return the Environment for this application context in configurable form, allowing for further customization.

If none specified, a default environment will be initialized via createEnvironment().

Specified by:

getEnvironment in interface ConfigurableApplicationContext

Specified by:

getEnvironment in interface org.springframework.core.env.EnvironmentCapable

createEnvironment

protected org.springframework.core.env.ConfigurableEnvironment createEnvironment()

Create and return a new StandardEnvironment.

Subclasses may override this method in order to supply a custom ConfigurableEnvironment implementation.

getAutowireCapableBeanFactory

public org.springframework.beans.factory.config.AutowireCapableBeanFactory getAutowireCapableBeanFactory()
                                                                                                  throws IllegalStateException

Return this context's internal bean factory as AutowireCapableBeanFactory, if already available.

Specified by:

getAutowireCapableBeanFactory in interface ApplicationContext

Returns:

the AutowireCapableBeanFactory for this context

Throws:

IllegalStateException - if the context does not support the AutowireCapableBeanFactory interface, or does not hold an autowire-capable bean factory yet (e.g. if refresh() has never been called), or if the context has been closed already

See Also:

getBeanFactory()

getStartupDate

public long getStartupDate()

Return the timestamp (ms) when this context was first loaded.

Specified by:

getStartupDate in interface ApplicationContext

Returns:

the timestamp (ms) when this context was first loaded

publishEvent

public void publishEvent(ApplicationEvent event)

Publish the given event to all listeners.

Note: Listeners get initialized after the MessageSource, to be able to access it within listener implementations. Thus, MessageSource implementations cannot publish events.

Specified by:

publishEvent in interface ApplicationEventPublisher

Parameters:

event - the event to publish (may be application-specific or a standard framework event)

See Also:

ApplicationEventPublisher.publishEvent(Object), ContextRefreshedEvent, ContextClosedEvent

publishEvent

public void publishEvent(Object event)

Publish the given event to all listeners.

Note: Listeners get initialized after the MessageSource, to be able to access it within listener implementations. Thus, MessageSource implementations cannot publish events.

Specified by:

publishEvent in interface ApplicationEventPublisher

Parameters:

event - the event to publish (may be an ApplicationEvent or a payload object to be turned into a PayloadApplicationEvent)

See Also:

ApplicationEventPublisher.publishEvent(ApplicationEvent), PayloadApplicationEvent

publishEvent

protected void publishEvent(Object event,
                            @Nullable
                            org.springframework.core.ResolvableType eventType)

Publish the given event to all listeners.

Parameters:

event - the event to publish (may be an ApplicationEvent or a payload object to be turned into a PayloadApplicationEvent)

eventType - the resolved event type, if known

Since:

4.2

setApplicationStartup

public void setApplicationStartup(org.springframework.core.metrics.ApplicationStartup applicationStartup)

Description copied from interface: ConfigurableApplicationContext

Set the ApplicationStartup for this application context.

This allows the application context to record metrics during startup.

Specified by:

setApplicationStartup in interface ConfigurableApplicationContext

Parameters:

applicationStartup - the new context event factory

getApplicationStartup

public org.springframework.core.metrics.ApplicationStartup getApplicationStartup()

Description copied from interface: ConfigurableApplicationContext

Return the ApplicationStartup for this application context.

Specified by:

getApplicationStartup in interface ConfigurableApplicationContext

getResourcePatternResolver

protected org.springframework.core.io.support.ResourcePatternResolver getResourcePatternResolver()

Return the ResourcePatternResolver to use for resolving location patterns into Resource instances. Default is a PathMatchingResourcePatternResolver, supporting Ant-style location patterns.

Can be overridden in subclasses, for extended resolution strategies, for example in a web environment.

Do not call this when needing to resolve a location pattern. Call the context's getResources method instead, which will delegate to the ResourcePatternResolver.

Returns:

the ResourcePatternResolver for this context

See Also:

getResources(java.lang.String), PathMatchingResourcePatternResolver

setParent

public void setParent(@Nullable
                      ApplicationContext parent)

Set the parent of this application context.

The parent environment is merged with this (child) application context environment if the parent is non-null and its environment is an instance of ConfigurableEnvironment.

Specified by:

setParent in interface ConfigurableApplicationContext

Parameters:

parent - the parent context

See Also:

ConfigurableEnvironment.merge(ConfigurableEnvironment)

addBeanFactoryPostProcessor

public void addBeanFactoryPostProcessor(org.springframework.beans.factory.config.BeanFactoryPostProcessor postProcessor)

Description copied from interface: ConfigurableApplicationContext

Add a new BeanFactoryPostProcessor that will get applied to the internal bean factory of this application context on refresh, before any of the bean definitions get evaluated. To be invoked during context configuration.

Specified by:

addBeanFactoryPostProcessor in interface ConfigurableApplicationContext

Parameters:

postProcessor - the factory processor to register

getBeanFactoryPostProcessors

public List<org.springframework.beans.factory.config.BeanFactoryPostProcessor> getBeanFactoryPostProcessors()

Return the list of BeanFactoryPostProcessors that will get applied to the internal BeanFactory.

addApplicationListener

public void addApplicationListener(ApplicationListener<?> listener)

Description copied from interface: ConfigurableApplicationContext

Add a new ApplicationListener that will be notified on context events such as context refresh and context shutdown.

Note that any ApplicationListener registered here will be applied on refresh if the context is not active yet, or on the fly with the current event multicaster in case of a context that is already active.

Specified by:

addApplicationListener in interface ConfigurableApplicationContext

Parameters:

listener - the ApplicationListener to register

See Also:

ContextRefreshedEvent, ContextClosedEvent

getApplicationListeners

public Collection<ApplicationListener<?>> getApplicationListeners()

Return the list of statically specified ApplicationListeners.

refresh

public void refresh()
             throws org.springframework.beans.BeansException,
                    IllegalStateException

Description copied from interface: ConfigurableApplicationContext

Load or refresh the persistent representation of the configuration, which might be from Java-based configuration, an XML file, a properties file, a relational database schema, or some other format.

As this is a startup method, it should destroy already created singletons if it fails, to avoid dangling resources. In other words, after invocation of this method, either all or no singletons at all should be instantiated.

Specified by:

refresh in interface ConfigurableApplicationContext

Throws:

org.springframework.beans.BeansException - if the bean factory could not be initialized

IllegalStateException - if already initialized and multiple refresh attempts are not supported

prepareRefresh

protected void prepareRefresh()

Prepare this context for refreshing, setting its startup date and active flag as well as performing any initialization of property sources.

initPropertySources

protected void initPropertySources()

Replace any stub property sources with actual instances.

See Also:

PropertySource.StubPropertySource, org.springframework.web.context.support.WebApplicationContextUtils#initServletPropertySources

obtainFreshBeanFactory

protected org.springframework.beans.factory.config.ConfigurableListableBeanFactory obtainFreshBeanFactory()

Tell the subclass to refresh the internal bean factory.

Returns:

the fresh BeanFactory instance

See Also:

refreshBeanFactory(), getBeanFactory()

prepareBeanFactory

protected void prepareBeanFactory(org.springframework.beans.factory.config.ConfigurableListableBeanFactory beanFactory)

Configure the factory's standard context characteristics, such as the context's ClassLoader and post-processors.

Parameters:

beanFactory - the BeanFactory to configure

postProcessBeanFactory

protected void postProcessBeanFactory(org.springframework.beans.factory.config.ConfigurableListableBeanFactory beanFactory)

Modify the application context's internal bean factory after its standard initialization. All bean definitions will have been loaded, but no beans will have been instantiated yet. This allows for registering special BeanPostProcessors etc in certain ApplicationContext implementations.

Parameters:

beanFactory - the bean factory used by the application context

invokeBeanFactoryPostProcessors

protected void invokeBeanFactoryPostProcessors(org.springframework.beans.factory.config.ConfigurableListableBeanFactory beanFactory)

Instantiate and invoke all registered BeanFactoryPostProcessor beans, respecting explicit order if given.

Must be called before singleton instantiation.

registerBeanPostProcessors

protected void registerBeanPostProcessors(org.springframework.beans.factory.config.ConfigurableListableBeanFactory beanFactory)

Instantiate and register all BeanPostProcessor beans, respecting explicit order if given.

Must be called before any instantiation of application beans.

initMessageSource

protected void initMessageSource()

Initialize the MessageSource. Use parent's if none defined in this context.

initApplicationEventMulticaster

protected void initApplicationEventMulticaster()

Initialize the ApplicationEventMulticaster. Uses SimpleApplicationEventMulticaster if none defined in the context.

See Also:

SimpleApplicationEventMulticaster

initLifecycleProcessor

protected void initLifecycleProcessor()

Initialize the LifecycleProcessor. Uses DefaultLifecycleProcessor if none defined in the context.

See Also:

DefaultLifecycleProcessor

onRefresh

protected void onRefresh()
                  throws org.springframework.beans.BeansException

Template method which can be overridden to add context-specific refresh work. Called on initialization of special beans, before instantiation of singletons.

This implementation is empty.

Throws:

org.springframework.beans.BeansException - in case of errors

See Also:

refresh()

registerListeners

protected void registerListeners()

Add beans that implement ApplicationListener as listeners. Doesn't affect other listeners, which can be added without being beans.

finishBeanFactoryInitialization

protected void finishBeanFactoryInitialization(org.springframework.beans.factory.config.ConfigurableListableBeanFactory beanFactory)

Finish the initialization of this context's bean factory, initializing all remaining singleton beans.

finishRefresh

protected void finishRefresh()

Finish the refresh of this context, invoking the LifecycleProcessor's onRefresh() method and publishing the ContextRefreshedEvent.

cancelRefresh

protected void cancelRefresh(org.springframework.beans.BeansException ex)

Cancel this context's refresh attempt, resetting the active flag after an exception got thrown.

Parameters:

ex - the exception that led to the cancellation

resetCommonCaches

protected void resetCommonCaches()

Reset Spring's common reflection metadata caches, in particular the ReflectionUtils, AnnotationUtils, ResolvableType and CachedIntrospectionResults caches.

Since:

4.2

See Also:

ReflectionUtils.clearCache(), AnnotationUtils.clearCache(), ResolvableType.clearCache(), CachedIntrospectionResults.clearClassLoader(ClassLoader)

registerShutdownHook

public void registerShutdownHook()

Register a shutdown hook named SpringContextShutdownHook with the JVM runtime, closing this context on JVM shutdown unless it has already been closed at that time.

Delegates to doClose() for the actual closing procedure.

Specified by:

registerShutdownHook in interface ConfigurableApplicationContext

See Also:

Runtime.addShutdownHook(java.lang.Thread), ConfigurableApplicationContext.SHUTDOWN_HOOK_THREAD_NAME, close(), doClose()

destroy

@Deprecated
public void destroy()

Deprecated. as of Spring Framework 5.0, in favor of close()

Callback for destruction of this instance, originally attached to a DisposableBean implementation (not anymore in 5.0).

The close() method is the native way to shut down an ApplicationContext, which this method simply delegates to.

close

public void close()

Close this application context, destroying all beans in its bean factory.

Delegates to doClose() for the actual closing procedure. Also removes a JVM shutdown hook, if registered, as it's not needed anymore.

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Specified by:

close in interface ConfigurableApplicationContext

See Also:

doClose(), registerShutdownHook()

doClose

protected void doClose()

Actually performs context closing: publishes a ContextClosedEvent and destroys the singletons in the bean factory of this application context.

Called by both close() and a JVM shutdown hook, if any.

See Also:

ContextClosedEvent, destroyBeans(), close(), registerShutdownHook()

destroyBeans

protected void destroyBeans()

Template method for destroying all beans that this context manages. The default implementation destroy all cached singletons in this context, invoking DisposableBean.destroy() and/or the specified "destroy-method".

Can be overridden to add context-specific bean destruction steps right before or right after standard singleton destruction, while the context's BeanFactory is still active.

See Also:

getBeanFactory(), ConfigurableBeanFactory.destroySingletons()

onClose

protected void onClose()

Template method which can be overridden to add context-specific shutdown work. The default implementation is empty.

Called at the end of doClose()'s shutdown procedure, after this context's BeanFactory has been closed. If custom shutdown logic needs to execute while the BeanFactory is still active, override the destroyBeans() method instead.

isActive

public boolean isActive()

Description copied from interface: ConfigurableApplicationContext

Determine whether this application context is active, that is, whether it has been refreshed at least once and has not been closed yet.

Specified by:

isActive in interface ConfigurableApplicationContext

Returns:

whether the context is still active

See Also:

ConfigurableApplicationContext.refresh(), ConfigurableApplicationContext.close(), ConfigurableApplicationContext.getBeanFactory()

assertBeanFactoryActive

protected void assertBeanFactoryActive()

Assert that this context's BeanFactory is currently active, throwing an IllegalStateException if it isn't.

Invoked by all BeanFactory delegation methods that depend on an active context, i.e. in particular all bean accessor methods.

The default implementation checks the 'active' status of this context overall. May be overridden for more specific checks, or for a no-op if getBeanFactory() itself throws an exception in such a case.

getBean

public Object getBean(String name)
               throws org.springframework.beans.BeansException

Specified by:

getBean in interface org.springframework.beans.factory.BeanFactory

Throws:

org.springframework.beans.BeansException

getBean

public <T> T getBean(String name,
                     Class<T> requiredType)
              throws org.springframework.beans.BeansException

Specified by:

getBean in interface org.springframework.beans.factory.BeanFactory

Throws:

org.springframework.beans.BeansException

getBean

public Object getBean(String name,
                      Object... args)
               throws org.springframework.beans.BeansException

Specified by:

getBean in interface org.springframework.beans.factory.BeanFactory

Throws:

org.springframework.beans.BeansException

getBean

public <T> T getBean(Class<T> requiredType)
              throws org.springframework.beans.BeansException

Specified by:

getBean in interface org.springframework.beans.factory.BeanFactory

Throws:

org.springframework.beans.BeansException

getBean

public <T> T getBean(Class<T> requiredType,
                     Object... args)
              throws org.springframework.beans.BeansException

Specified by:

getBean in interface org.springframework.beans.factory.BeanFactory

Throws:

org.springframework.beans.BeansException

getBeanProvider

public <T> org.springframework.beans.factory.ObjectProvider<T> getBeanProvider(Class<T> requiredType)

Specified by:

getBeanProvider in interface org.springframework.beans.factory.BeanFactory

getBeanProvider

public <T> org.springframework.beans.factory.ObjectProvider<T> getBeanProvider(org.springframework.core.ResolvableType requiredType)

Specified by:

getBeanProvider in interface org.springframework.beans.factory.BeanFactory

containsBean

public boolean containsBean(String name)

Specified by:

containsBean in interface org.springframework.beans.factory.BeanFactory

isSingleton

public boolean isSingleton(String name)
                    throws org.springframework.beans.factory.NoSuchBeanDefinitionException

Specified by:

isSingleton in interface org.springframework.beans.factory.BeanFactory

Throws:

org.springframework.beans.factory.NoSuchBeanDefinitionException

isPrototype

public boolean isPrototype(String name)
                    throws org.springframework.beans.factory.NoSuchBeanDefinitionException

Specified by:

isPrototype in interface org.springframework.beans.factory.BeanFactory

Throws:

org.springframework.beans.factory.NoSuchBeanDefinitionException

isTypeMatch

public boolean isTypeMatch(String name,
                           org.springframework.core.ResolvableType typeToMatch)
                    throws org.springframework.beans.factory.NoSuchBeanDefinitionException

Specified by:

isTypeMatch in interface org.springframework.beans.factory.BeanFactory

Throws:

org.springframework.beans.factory.NoSuchBeanDefinitionException

isTypeMatch

public boolean isTypeMatch(String name,
                           Class<?> typeToMatch)
                    throws org.springframework.beans.factory.NoSuchBeanDefinitionException

Specified by:

isTypeMatch in interface org.springframework.beans.factory.BeanFactory

Throws:

org.springframework.beans.factory.NoSuchBeanDefinitionException

getType

@Nullable
public Class<?> getType(String name)
                           throws org.springframework.beans.factory.NoSuchBeanDefinitionException

Specified by:

getType in interface org.springframework.beans.factory.BeanFactory

Throws:

org.springframework.beans.factory.NoSuchBeanDefinitionException

getType

@Nullable
public Class<?> getType(String name,
                                  boolean allowFactoryBeanInit)
                           throws org.springframework.beans.factory.NoSuchBeanDefinitionException

Specified by:

getType in interface org.springframework.beans.factory.BeanFactory

Throws:

org.springframework.beans.factory.NoSuchBeanDefinitionException

getAliases

public String[] getAliases(String name)

Specified by:

getAliases in interface org.springframework.beans.factory.BeanFactory

containsBeanDefinition

public boolean containsBeanDefinition(String beanName)

Specified by:

containsBeanDefinition in interface org.springframework.beans.factory.ListableBeanFactory

getBeanDefinitionCount

public int getBeanDefinitionCount()

Specified by:

getBeanDefinitionCount in interface org.springframework.beans.factory.ListableBeanFactory

getBeanDefinitionNames

public String[] getBeanDefinitionNames()

Specified by:

getBeanDefinitionNames in interface org.springframework.beans.factory.ListableBeanFactory

getBeanProvider

public <T> org.springframework.beans.factory.ObjectProvider<T> getBeanProvider(Class<T> requiredType,
                                                                               boolean allowEagerInit)

Specified by:

getBeanProvider in interface org.springframework.beans.factory.ListableBeanFactory

getBeanProvider

public <T> org.springframework.beans.factory.ObjectProvider<T> getBeanProvider(org.springframework.core.ResolvableType requiredType,
                                                                               boolean allowEagerInit)

Specified by:

getBeanProvider in interface org.springframework.beans.factory.ListableBeanFactory

getBeanNamesForType

public String[] getBeanNamesForType(org.springframework.core.ResolvableType type)

Specified by:

getBeanNamesForType in interface org.springframework.beans.factory.ListableBeanFactory

getBeanNamesForType

public String[] getBeanNamesForType(org.springframework.core.ResolvableType type,
                                    boolean includeNonSingletons,
                                    boolean allowEagerInit)

Specified by:

getBeanNamesForType in interface org.springframework.beans.factory.ListableBeanFactory

getBeanNamesForType

public String[] getBeanNamesForType(@Nullable
                                    Class<?> type)

Specified by:

getBeanNamesForType in interface org.springframework.beans.factory.ListableBeanFactory

getBeanNamesForType

public String[] getBeanNamesForType(@Nullable
                                    Class<?> type,
                                    boolean includeNonSingletons,
                                    boolean allowEagerInit)

Specified by:

getBeanNamesForType in interface org.springframework.beans.factory.ListableBeanFactory

getBeansOfType

public <T> Map<String,T> getBeansOfType(@Nullable
                                        Class<T> type)
                                 throws org.springframework.beans.BeansException

Specified by:

getBeansOfType in interface org.springframework.beans.factory.ListableBeanFactory

Throws:

org.springframework.beans.BeansException

getBeansOfType

public <T> Map<String,T> getBeansOfType(@Nullable
                                        Class<T> type,
                                        boolean includeNonSingletons,
                                        boolean allowEagerInit)
                                 throws org.springframework.beans.BeansException

Specified by:

getBeansOfType in interface org.springframework.beans.factory.ListableBeanFactory

Throws:

org.springframework.beans.BeansException

getBeanNamesForAnnotation

public String[] getBeanNamesForAnnotation(Class<? extends Annotation> annotationType)

Specified by:

getBeanNamesForAnnotation in interface org.springframework.beans.factory.ListableBeanFactory

getBeansWithAnnotation

public Map<String,Object> getBeansWithAnnotation(Class<? extends Annotation> annotationType)
                                          throws org.springframework.beans.BeansException

Specified by:

getBeansWithAnnotation in interface org.springframework.beans.factory.ListableBeanFactory

Throws:

org.springframework.beans.BeansException

findAnnotationOnBean

@Nullable
public <A extends Annotation> A findAnnotationOnBean(String beanName,
                                                               Class<A> annotationType)
                                                        throws org.springframework.beans.factory.NoSuchBeanDefinitionException

Specified by:

findAnnotationOnBean in interface org.springframework.beans.factory.ListableBeanFactory

Throws:

org.springframework.beans.factory.NoSuchBeanDefinitionException

findAnnotationOnBean

@Nullable
public <A extends Annotation> A findAnnotationOnBean(String beanName,
                                                               Class<A> annotationType,
                                                               boolean allowFactoryBeanInit)
                                                        throws org.springframework.beans.factory.NoSuchBeanDefinitionException

Specified by:

findAnnotationOnBean in interface org.springframework.beans.factory.ListableBeanFactory

Throws:

org.springframework.beans.factory.NoSuchBeanDefinitionException

getParentBeanFactory

@Nullable
public org.springframework.beans.factory.BeanFactory getParentBeanFactory()

Specified by:

getParentBeanFactory in interface org.springframework.beans.factory.HierarchicalBeanFactory

containsLocalBean

public boolean containsLocalBean(String name)

Specified by:

containsLocalBean in interface org.springframework.beans.factory.HierarchicalBeanFactory

getInternalParentBeanFactory

@Nullable
protected org.springframework.beans.factory.BeanFactory getInternalParentBeanFactory()

Return the internal bean factory of the parent context if it implements ConfigurableApplicationContext; else, return the parent context itself.

See Also:

ConfigurableApplicationContext.getBeanFactory()

getMessage

public String getMessage(String code,
                         @Nullable
                         Object[] args,
                         @Nullable
                         String defaultMessage,
                         Locale locale)

Description copied from interface: MessageSource

Try to resolve the message. Return default message if no message was found.

Specified by:

getMessage in interface MessageSource

Parameters:

code - the message code to look up, e.g. 'calculator.noRateSet'. MessageSource users are encouraged to base message names on qualified class or package names, avoiding potential conflicts and ensuring maximum clarity.

args - an array of arguments that will be filled in for params within the message (params look like "{0}", "{1,date}", "{2,time}" within a message), or null if none

defaultMessage - a default message to return if the lookup fails

locale - the locale in which to do the lookup

Returns:

the resolved message if the lookup was successful, otherwise the default message passed as a parameter (which may be null)

See Also:

MessageSource.getMessage(MessageSourceResolvable, Locale), MessageFormat

getMessage

public String getMessage(String code,
                         @Nullable
                         Object[] args,
                         Locale locale)
                  throws NoSuchMessageException

Description copied from interface: MessageSource

Try to resolve the message. Treat as an error if the message can't be found.

Specified by:

getMessage in interface MessageSource

Parameters:

code - the message code to look up, e.g. 'calculator.noRateSet'. MessageSource users are encouraged to base message names on qualified class or package names, avoiding potential conflicts and ensuring maximum clarity.

args - an array of arguments that will be filled in for params within the message (params look like "{0}", "{1,date}", "{2,time}" within a message), or null if none

locale - the locale in which to do the lookup

Returns:

the resolved message (never null)

Throws:

NoSuchMessageException - if no corresponding message was found

See Also:

MessageSource.getMessage(MessageSourceResolvable, Locale), MessageFormat

getMessage

public String getMessage(MessageSourceResolvable resolvable,
                         Locale locale)
                  throws NoSuchMessageException

Description copied from interface: MessageSource

Try to resolve the message using all the attributes contained within the MessageSourceResolvable argument that was passed in.

NOTE: We must throw a NoSuchMessageException on this method since at the time of calling this method we aren't able to determine if the defaultMessage property of the resolvable is null or not.

Specified by:

getMessage in interface MessageSource

Parameters:

resolvable - the value object storing attributes required to resolve a message (may include a default message)

locale - the locale in which to do the lookup

Returns:

the resolved message (never null since even a MessageSourceResolvable-provided default message needs to be non-null)

Throws:

NoSuchMessageException - if no corresponding message was found (and no default message was provided by the MessageSourceResolvable)

See Also:

MessageSourceResolvable.getCodes(), MessageSourceResolvable.getArguments(), MessageSourceResolvable.getDefaultMessage(), MessageFormat

getInternalParentMessageSource

@Nullable
protected MessageSource getInternalParentMessageSource()

Return the internal message source of the parent context if it is an AbstractApplicationContext too; else, return the parent context itself.

getResources

public org.springframework.core.io.Resource[] getResources(String locationPattern)
                                                    throws IOException

Specified by:

getResources in interface org.springframework.core.io.support.ResourcePatternResolver

Throws:

IOException

start

public void start()

Description copied from interface: Lifecycle

Start this component.

Should not throw an exception if the component is already running.

In the case of a container, this will propagate the start signal to all components that apply.

Specified by:

start in interface Lifecycle

See Also:

SmartLifecycle.isAutoStartup()

stop

public void stop()

Description copied from interface: Lifecycle

Stop this component, typically in a synchronous fashion, such that the component is fully stopped upon return of this method. Consider implementing SmartLifecycle and its stop(Runnable) variant when asynchronous stop behavior is necessary.

Note that this stop notification is not guaranteed to come before destruction: On regular shutdown, Lifecycle beans will first receive a stop notification before the general destruction callbacks are being propagated; however, on hot refresh during a context's lifetime or on aborted refresh attempts, a given bean's destroy method will be called without any consideration of stop signals upfront.

Should not throw an exception if the component is not running (not started yet).

In the case of a container, this will propagate the stop signal to all components that apply.

Specified by:

stop in interface Lifecycle

See Also:

SmartLifecycle.stop(Runnable), DisposableBean.destroy()

isRunning

public boolean isRunning()

Description copied from interface: Lifecycle

Check whether this component is currently running.

In the case of a container, this will return true only if all components that apply are currently running.

Specified by:

isRunning in interface Lifecycle

Returns:

whether the component is currently running

refreshBeanFactory

protected abstract void refreshBeanFactory()
                                    throws org.springframework.beans.BeansException,
                                           IllegalStateException

Subclasses must implement this method to perform the actual configuration load. The method is invoked by refresh() before any other initialization work.

A subclass will either create a new bean factory and hold a reference to it, or return a single BeanFactory instance that it holds. In the latter case, it will usually throw an IllegalStateException if refreshing the context more than once.

Throws:

org.springframework.beans.BeansException - if initialization of the bean factory failed

IllegalStateException - if already initialized and multiple refresh attempts are not supported

closeBeanFactory

protected abstract void closeBeanFactory()

Subclasses must implement this method to release their internal bean factory. This method gets invoked by close() after all other shutdown work.

Should never throw an exception but rather log shutdown failures.

getBeanFactory

public abstract org.springframework.beans.factory.config.ConfigurableListableBeanFactory getBeanFactory()
                                                                                                 throws IllegalStateException

Subclasses must return their internal bean factory here. They should implement the lookup efficiently, so that it can be called repeatedly without a performance penalty.

Note: Subclasses should check whether the context is still active before returning the internal bean factory. The internal factory should generally be considered unavailable once the context has been closed.

Specified by:

getBeanFactory in interface ConfigurableApplicationContext

Returns:

this application context's internal bean factory (never null)

Throws:

IllegalStateException - if the context does not hold an internal bean factory yet (usually if refresh() has never been called) or if the context has been closed already

See Also:

refreshBeanFactory(), closeBeanFactory()

toString

public String toString()

Return information about this context.

Overrides:

toString in class Object