BeanFactory是访问bean容器的根接口，它是一个bean容器的基本客户端视图。
先让我们看看beanfactory的前生后世吧！
beanFactory有四个重要的子接口：
SimpleJndiBeanFactory是spring beanFactory接口的基于jndi的简单实现。不支持枚举bean定义，故不需要实现ListableBeanFactory接口。这个bean工厂可以解析制定名称的jndi名称，在J2EE应用中，jndi名称的命名空间为"java:/comp/env/".
这个bean工厂主要和spring的CommonAnnotationBeanPostProcessor 联合使用。
The main intent of this factory is usage in combination with Spring's CommonAnnotationBeanPostProcessor, configured as "resourceFactory" for resolving @Resource annotations as JNDI objects without intermediate bean definitions. It may be used for similar lookup scenarios as well, of course, in particular if BeanFactory-style type checking is required.
ListableBeanFactory是beanFactory接口的扩展接口，它可以枚举所有的bean实例，而不是客户端通过名称一个一个的查询得出所有的实例。要预加载所有的bean定义的beanfactory可以实现这个接口来。该 接口定义了访问容器中Bean基本信息的若干方法，如查看Bean的个数、获取某一类型Bean的配置名、查看容器中是否包括某一Bean等方法；
/** * Check if this bean factory contains a bean definition with the given name. * <p>Does not consider any hierarchy this factory may participate in, * and ignores any singleton beans that have been registered by * other means than bean definitions. * @param beanName the name of the bean to look for * @return if this bean factory contains a bean definition with the given name * @see #containsBean */ boolean containsBeanDefinition(String beanName); /** * Return the number of beans defined in the factory. * <p>Does not consider any hierarchy this factory may participate in, * and ignores any singleton beans that have been registered by * other means than bean definitions. * @return the number of beans defined in the factory */ int getBeanDefinitionCount(); /** * Return the names of all beans defined in this factory. * <p>Does not consider any hierarchy this factory may participate in, * and ignores any singleton beans that have been registered by * other means than bean definitions. * @return the names of all beans defined in this factory, * or an empty array if none defined */ String[] getBeanDefinitionNames(); /** * Return the names of beans matching the given type (including subclasses), * judging from either bean definitions or the value of {@code getObjectType} * in the case of FactoryBeans. * <p><b>NOTE: This method introspects top-level beans only.</b> It does <i>not</i> * check nested beans which might match the specified type as well. * <p>Does consider objects created by FactoryBeans, which means that FactoryBeans * will get initialized. If the object created by the FactoryBean doesn't match, * the raw FactoryBean itself will be matched against the type. * <p>Does not consider any hierarchy this factory may participate in. * Use BeanFactoryUtils' {@code beanNamesForTypeIncludingAncestors} * to include beans in ancestor factories too. * <p>Note: Does <i>not</i> ignore singleton beans that have been registered * by other means than bean definitions. * <p>This version of {@code getBeanNamesForType} matches all kinds of beans, * be it singletons, prototypes, or FactoryBeans. In most implementations, the * result will be the same as for {@code getBeanNamesOfType(type, true, true)}. * <p>Bean names returned by this method should always return bean names <i>in the * order of definition</i> in the backend configuration, as far as possible. * @param type the class or interface to match, or {@code null} for all bean names * @return the names of beans (or objects created by FactoryBeans) matching * the given object type (including subclasses), or an empty array if none * @see FactoryBean#getObjectType * @see BeanFactoryUtils#beanNamesForTypeIncludingAncestors(ListableBeanFactory, Class) */ String[] getBeanNamesForType(Class<?> type); /** * Return the names of beans matching the given type (including subclasses), * judging from either bean definitions or the value of {@code getObjectType} * in the case of FactoryBeans. * <p><b>NOTE: This method introspects top-level beans only.</b> It does <i>not</i> * check nested beans which might match the specified type as well. * <p>Does consider objects created by FactoryBeans if the "allowEagerInit" flag is set, * which means that FactoryBeans will get initialized. If the object created by the * FactoryBean doesn't match, the raw FactoryBean itself will be matched against the * type. If "allowEagerInit" is not set, only raw FactoryBeans will be checked * (which doesn't require initialization of each FactoryBean). * <p>Does not consider any hierarchy this factory may participate in. * Use BeanFactoryUtils' {@code beanNamesForTypeIncludingAncestors} * to include beans in ancestor factories too. * <p>Note: Does <i>not</i> ignore singleton beans that have been registered * by other means than bean definitions. * <p>Bean names returned by this method should always return bean names <i>in the * order of definition</i> in the backend configuration, as far as possible. * @param type the class or interface to match, or {@code null} for all bean names * @param includeNonSingletons whether to include prototype or scoped beans too * or just singletons (also applies to FactoryBeans) * @param allowEagerInit whether to initialize <i>lazy-init singletons</i> and * <i>objects created by FactoryBeans</i> (or by factory methods with a * "factory-bean" reference) for the type check. Note that FactoryBeans need to be * eagerly initialized to determine their type: So be aware that passing in "true" * for this flag will initialize FactoryBeans and "factory-bean" references. * @return the names of beans (or objects created by FactoryBeans) matching * the given object type (including subclasses), or an empty array if none * @see FactoryBean#getObjectType * @see BeanFactoryUtils#beanNamesForTypeIncludingAncestors(ListableBeanFactory, Class, boolean, boolean) */ String[] getBeanNamesForType(Class<?> type, boolean includeNonSingletons, boolean allowEagerInit); /** * Return the bean instances that match the given object type (including * subclasses), judging from either bean definitions or the value of * {@code getObjectType} in the case of FactoryBeans. * <p><b>NOTE: This method introspects top-level beans only.</b> It does <i>not</i> * check nested beans which might match the specified type as well. * <p>Does consider objects created by FactoryBeans, which means that FactoryBeans * will get initialized. If the object created by the FactoryBean doesn't match, * the raw FactoryBean itself will be matched against the type. * <p>Does not consider any hierarchy this factory may participate in. * Use BeanFactoryUtils' {@code beansOfTypeIncludingAncestors} * to include beans in ancestor factories too. * <p>Note: Does <i>not</i> ignore singleton beans that have been registered * by other means than bean definitions. * <p>This version of getBeansOfType matches all kinds of beans, be it * singletons, prototypes, or FactoryBeans. In most implementations, the * result will be the same as for {@code getBeansOfType(type, true, true)}. * <p>The Map returned by this method should always return bean names and * corresponding bean instances <i>in the order of definition</i> in the * backend configuration, as far as possible. * @param type the class or interface to match, or {@code null} for all concrete beans * @return a Map with the matching beans, containing the bean names as * keys and the corresponding bean instances as values * @throws BeansException if a bean could not be created * @since 1.1.2 * @see FactoryBean#getObjectType * @see BeanFactoryUtils#beansOfTypeIncludingAncestors(ListableBeanFactory, Class) */ <T> Map<String, T> getBeansOfType(Class<T> type) throws BeansException; /** * Return the bean instances that match the given object type (including * subclasses), judging from either bean definitions or the value of * {@code getObjectType} in the case of FactoryBeans. * <p><b>NOTE: This method introspects top-level beans only.</b> It does <i>not</i> * check nested beans which might match the specified type as well. * <p>Does consider objects created by FactoryBeans if the "allowEagerInit" flag is set, * which means that FactoryBeans will get initialized. If the object created by the * FactoryBean doesn't match, the raw FactoryBean itself will be matched against the * type. If "allowEagerInit" is not set, only raw FactoryBeans will be checked * (which doesn't require initialization of each FactoryBean). * <p>Does not consider any hierarchy this factory may participate in. * Use BeanFactoryUtils' {@code beansOfTypeIncludingAncestors} * to include beans in ancestor factories too. * <p>Note: Does <i>not</i> ignore singleton beans that have been registered * by other means than bean definitions. * <p>The Map returned by this method should always return bean names and * corresponding bean instances <i>in the order of definition</i> in the * backend configuration, as far as possible. * @param type the class or interface to match, or {@code null} for all concrete beans * @param includeNonSingletons whether to include prototype or scoped beans too * or just singletons (also applies to FactoryBeans) * @param allowEagerInit whether to initialize <i>lazy-init singletons</i> and * <i>objects created by FactoryBeans</i> (or by factory methods with a * "factory-bean" reference) for the type check. Note that FactoryBeans need to be * eagerly initialized to determine their type: So be aware that passing in "true" * for this flag will initialize FactoryBeans and "factory-bean" references. * @return a Map with the matching beans, containing the bean names as * keys and the corresponding bean instances as values * @throws BeansException if a bean could not be created * @see FactoryBean#getObjectType * @see BeanFactoryUtils#beansOfTypeIncludingAncestors(ListableBeanFactory, Class, boolean, boolean) */ <T> Map<String, T> getBeansOfType(Class<T> type, boolean includeNonSingletons, boolean allowEagerInit) throws BeansException; /** * Find all names of beans whose {@code Class} has the supplied {@link Annotation} * type, without creating any bean instances yet. * @param annotationType the type of annotation to look for * @return the names of all matching beans * @since 4.0 */ String[] getBeanNamesForAnnotation(Class<? extends Annotation> annotationType); /** * Find all beans whose {@code Class} has the supplied {@link Annotation} type, * returning a Map of bean names with corresponding bean instances. * @param annotationType the type of annotation to look for * @return a Map with the matching beans, containing the bean names as * keys and the corresponding bean instances as values * @throws BeansException if a bean could not be created * @since 3.0 */ Map<String, Object> getBeansWithAnnotation(Class<? extends Annotation> annotationType) throws BeansException; /** * Find an {@link Annotation} of {@code annotationType} on the specified * bean, traversing its interfaces and super classes if no annotation can be * found on the given class itself. * @param beanName the name of the bean to look for annotations on * @param annotationType the annotation class to look for * @return the annotation of the given type if found, or {@code null} * @throws NoSuchBeanDefinitionException if there is no bean with the given name * @since 3.0 */ <A extends Annotation> A findAnnotationOnBean(String beanName, Class<A> annotationType) throws NoSuchBeanDefinitionException;
HierarchicalBeanFactory 是一个bean factory 子接口实现，可以作为层次结构的一部分。相对应的bean Factory方法setParentBeanFactory允许在一个可配置beanfactory中设置它们的父bean factory。
/** * Return the parent bean factory, or {@code null} if there is none. */ BeanFactory getParentBeanFactory(); /** * Return whether the local bean factory contains a bean of the given name, * ignoring beans defined in ancestor contexts. * <p>This is an alternative to {@code containsBean}, ignoring a bean * of the given name from an ancestor bean factory. * @param name the name of the bean to query * @return whether a bean with the given name is defined in the local factory * @see BeanFactory#containsBean */ boolean containsLocalBean(String name);
AutowireCapableBeanFactory：beanFactory接口的扩展实现，假如它们想要对已经存在的bean暴露它的功能，实现它就能实现自动装配功能。
定义了将容器中的Bean按某种规则（如按名字匹配、按类型匹配等）进行自动装配的方法；
/** * Constant that indicates no externally defined autowiring. Note that * BeanFactoryAware etc and annotation-driven injection will still be applied. * @see #createBean * @see #autowire * @see #autowireBeanProperties */ int AUTOWIRE_NO = 0; /** * Constant that indicates autowiring bean properties by name * (applying to all bean property setters). * @see #createBean * @see #autowire * @see #autowireBeanProperties */ int AUTOWIRE_BY_NAME = 1; /** * Constant that indicates autowiring bean properties by type * (applying to all bean property setters). * @see #createBean * @see #autowire * @see #autowireBeanProperties */ int AUTOWIRE_BY_TYPE = 2; /** * Constant that indicates autowiring the greediest constructor that * can be satisfied (involves resolving the appropriate constructor). * @see #createBean * @see #autowire */ int AUTOWIRE_CONSTRUCTOR = 3; /** * Constant that indicates determining an appropriate autowire strategy * through introspection of the bean class. * @see #createBean * @see #autowire * @deprecated as of Spring 3.0: If you are using mixed autowiring strategies, * prefer annotation-based autowiring for clearer demarcation of autowiring needs. */ @Deprecated int AUTOWIRE_AUTODETECT = 4; //------------------------------------------------------------------------- // Typical methods for creating and populating external bean instances //------------------------------------------------------------------------- /** * Fully create a new bean instance of the given class. * <p>Performs full initialization of the bean, including all applicable * {@link BeanPostProcessor BeanPostProcessors}. * <p>Note: This is intended for creating a fresh instance, populating annotated * fields and methods as well as applying all standard bean initialiation callbacks. * It does <i>not</> imply traditional by-name or by-type autowiring of properties; * use {@link #createBean(Class, int, boolean)} for that purposes. * @param beanClass the class of the bean to create * @return the new bean instance * @throws BeansException if instantiation or wiring failed */ <T> T createBean(Class<T> beanClass) throws BeansException; /** * Populate the given bean instance through applying after-instantiation callbacks * and bean property post-processing (e.g. for annotation-driven injection). * <p>Note: This is essentially intended for (re-)populating annotated fields and * methods, either for new instances or for deserialized instances. It does * <i>not</i> imply traditional by-name or by-type autowiring of properties; * use {@link #autowireBeanProperties} for that purposes. * @param existingBean the existing bean instance * @throws BeansException if wiring failed */ void autowireBean(Object existingBean) throws BeansException; /** * Configure the given raw bean: autowiring bean properties, applying * bean property values, applying factory callbacks such as {@code setBeanName} * and {@code setBeanFactory}, and also applying all bean post processors * (including ones which might wrap the given raw bean). * <p>This is effectively a superset of what {@link #initializeBean} provides, * fully applying the configuration specified by the corresponding bean definition. * <b>Note: This method requires a bean definition for the given name!</b> * @param existingBean the existing bean instance * @param beanName the name of the bean, to be passed to it if necessary * (a bean definition of that name has to be available) * @return the bean instance to use, either the original or a wrapped one * @throws org.springframework.beans.factory.NoSuchBeanDefinitionException * if there is no bean definition with the given name * @throws BeansException if the initialization failed * @see #initializeBean */ Object configureBean(Object existingBean, String beanName) throws BeansException; /** * Resolve the specified dependency against the beans defined in this factory. * @param descriptor the descriptor for the dependency * @param beanName the name of the bean which declares the present dependency * @return the resolved object, or {@code null} if none found * @throws BeansException in dependency resolution failed */ Object resolveDependency(DependencyDescriptor descriptor, String beanName) throws BeansException; //------------------------------------------------------------------------- // Specialized methods for fine-grained control over the bean lifecycle //------------------------------------------------------------------------- /** * Fully create a new bean instance of the given class with the specified * autowire strategy. All constants defined in this interface are supported here. * <p>Performs full initialization of the bean, including all applicable * {@link BeanPostProcessor BeanPostProcessors}. This is effectively a superset * of what {@link #autowire} provides, adding {@link #initializeBean} behavior. * @param beanClass the class of the bean to create * @param autowireMode by name or type, using the constants in this interface * @param dependencyCheck whether to perform a dependency check for objects * (not applicable to autowiring a constructor, thus ignored there) * @return the new bean instance * @throws BeansException if instantiation or wiring failed * @see #AUTOWIRE_NO * @see #AUTOWIRE_BY_NAME * @see #AUTOWIRE_BY_TYPE * @see #AUTOWIRE_CONSTRUCTOR */ Object createBean(Class<?> beanClass, int autowireMode, boolean dependencyCheck) throws BeansException; /** * Instantiate a new bean instance of the given class with the specified autowire * strategy. All constants defined in this interface are supported here. * Can also be invoked with {@code AUTOWIRE_NO} in order to just apply * before-instantiation callbacks (e.g. for annotation-driven injection). * <p>Does <i>not</i> apply standard {@link BeanPostProcessor BeanPostProcessors} * callbacks or perform any further initialization of the bean. This interface * offers distinct, fine-grained operations for those purposes, for example * {@link #initializeBean}. However, {@link InstantiationAwareBeanPostProcessor} * callbacks are applied, if applicable to the construction of the instance. * @param beanClass the class of the bean to instantiate * @param autowireMode by name or type, using the constants in this interface * @param dependencyCheck whether to perform a dependency check for object * references in the bean instance (not applicable to autowiring a constructor, * thus ignored there) * @return the new bean instance * @throws BeansException if instantiation or wiring failed * @see #AUTOWIRE_NO * @see #AUTOWIRE_BY_NAME * @see #AUTOWIRE_BY_TYPE * @see #AUTOWIRE_CONSTRUCTOR * @see #AUTOWIRE_AUTODETECT * @see #initializeBean * @see #applyBeanPostProcessorsBeforeInitialization * @see #applyBeanPostProcessorsAfterInitialization */ Object autowire(Class<?> beanClass, int autowireMode, boolean dependencyCheck) throws BeansException; /** * Autowire the bean properties of the given bean instance by name or type. * Can also be invoked with {@code AUTOWIRE_NO} in order to just apply * after-instantiation callbacks (e.g. for annotation-driven injection). * <p>Does <i>not</i> apply standard {@link BeanPostProcessor BeanPostProcessors} * callbacks or perform any further initialization of the bean. This interface * offers distinct, fine-grained operations for those purposes, for example * {@link #initializeBean}. However, {@link InstantiationAwareBeanPostProcessor} * callbacks are applied, if applicable to the configuration of the instance. * @param existingBean the existing bean instance * @param autowireMode by name or type, using the constants in this interface * @param dependencyCheck whether to perform a dependency check for object * references in the bean instance * @throws BeansException if wiring failed * @see #AUTOWIRE_BY_NAME * @see #AUTOWIRE_BY_TYPE * @see #AUTOWIRE_NO */ void autowireBeanProperties(Object existingBean, int autowireMode, boolean dependencyCheck) throws BeansException; /** * Apply the property values of the bean definition with the given name to * the given bean instance. The bean definition can either define a fully * self-contained bean, reusing its property values, or just property values * meant to be used for existing bean instances. * <p>This method does <i>not</i> autowire bean properties; it just applies * explicitly defined property values. Use the {@link #autowireBeanProperties} * method to autowire an existing bean instance. * <b>Note: This method requires a bean definition for the given name!</b> * <p>Does <i>not</i> apply standard {@link BeanPostProcessor BeanPostProcessors} * callbacks or perform any further initialization of the bean. This interface * offers distinct, fine-grained operations for those purposes, for example * {@link #initializeBean}. However, {@link InstantiationAwareBeanPostProcessor} * callbacks are applied, if applicable to the configuration of the instance. * @param existingBean the existing bean instance * @param beanName the name of the bean definition in the bean factory * (a bean definition of that name has to be available) * @throws org.springframework.beans.factory.NoSuchBeanDefinitionException * if there is no bean definition with the given name * @throws BeansException if applying the property values failed * @see #autowireBeanProperties */ void applyBeanPropertyValues(Object existingBean, String beanName) throws BeansException; /** * Initialize the given raw bean, applying factory callbacks * such as {@code setBeanName} and {@code setBeanFactory}, * also applying all bean post processors (including ones which * might wrap the given raw bean). * <p>Note that no bean definition of the given name has to exist * in the bean factory. The passed-in bean name will simply be used * for callbacks but not checked against the registered bean definitions. * @param existingBean the existing bean instance * @param beanName the name of the bean, to be passed to it if necessary * (only passed to {@link BeanPostProcessor BeanPostProcessors}) * @return the bean instance to use, either the original or a wrapped one * @throws BeansException if the initialization failed */ Object initializeBean(Object existingBean, String beanName) throws BeansException; /** * Apply {@link BeanPostProcessor BeanPostProcessors} to the given existing bean * instance, invoking their {@code postProcessBeforeInitialization} methods. * The returned bean instance may be a wrapper around the original. * @param existingBean the new bean instance * @param beanName the name of the bean * @return the bean instance to use, either the original or a wrapped one * @throws BeansException if any post-processing failed * @see BeanPostProcessor#postProcessBeforeInitialization */ Object applyBeanPostProcessorsBeforeInitialization(Object existingBean, String beanName) throws BeansException; /** * Apply {@link BeanPostProcessor BeanPostProcessors} to the given existing bean * instance, invoking their {@code postProcessAfterInitialization} methods. * The returned bean instance may be a wrapper around the original. * @param existingBean the new bean instance * @param beanName the name of the bean * @return the bean instance to use, either the original or a wrapped one * @throws BeansException if any post-processing failed * @see BeanPostProcessor#postProcessAfterInitialization */ Object applyBeanPostProcessorsAfterInitialization(Object existingBean, String beanName) throws BeansException; /** * Destroy the given bean instance (typically coming from {@link #createBean}), * applying the {@link org.springframework.beans.factory.DisposableBean} contract as well as * registered {@link DestructionAwareBeanPostProcessor DestructionAwareBeanPostProcessors}. * <p>Any exception that arises during destruction should be caught * and logged instead of propagated to the caller of this method. * @param existingBean the bean instance to destroy */ void destroyBean(Object existingBean); /** * Resolve the specified dependency against the beans defined in this factory. * @param descriptor the descriptor for the dependency * @param beanName the name of the bean which declares the present dependency * @param autowiredBeanNames a Set that all names of autowired beans (used for * resolving the present dependency) are supposed to be added to * @param typeConverter the TypeConverter to use for populating arrays and * collections * @return the resolved object, or {@code null} if none found * @throws BeansException in dependency resolution failed */ Object resolveDependency(DependencyDescriptor descriptor, String beanName, Set<String> autowiredBeanNames, TypeConverter typeConverter) throws BeansException;
其中：
HierarchicalBeanFactory的子接口
ConfigurableBeanFactory是一个配置接口，大部分beanFactory实现了这个接口。这个接口提供了对一个beanfactory进行配置的便利方法，加上beanFactory接口的客户端方法。增强了IoC容器的可定制性，它定义了设置类装载器、属性编辑器、容器初始化后置处理器等方法；
public interface ConfigurableBeanFactory extends HierarchicalBeanFactory, SingletonBeanRegistry { /** * Scope identifier for the standard singleton scope: "singleton". * Custom scopes can be added via {@code registerScope}. * @see #registerScope */ String SCOPE_SINGLETON = "singleton"; /** * Scope identifier for the standard prototype scope: "prototype". * Custom scopes can be added via {@code registerScope}. * @see #registerScope */ String SCOPE_PROTOTYPE = "prototype"; /** * Set the parent of this bean factory. * <p>Note that the parent cannot be changed: It should only be set outside * a constructor if it isn't available at the time of factory instantiation. * @param parentBeanFactory the parent BeanFactory * @throws IllegalStateException if this factory is already associated with * a parent BeanFactory * @see #getParentBeanFactory() */ void setParentBeanFactory(BeanFactory parentBeanFactory) throws IllegalStateException; /** * Set the class loader to use for loading bean classes. * Default is the thread context class loader. * <p>Note that this class loader will only apply to bean definitions * that do not carry a resolved bean class yet. This is the case as of * Spring 2.0 by default: Bean definitions only carry bean class names, * to be resolved once the factory processes the bean definition. * @param beanClassLoader the class loader to use, * or {@code null} to suggest the default class loader */ void setBeanClassLoader(ClassLoader beanClassLoader); /** * Return this factory's class loader for loading bean classes. */ ClassLoader getBeanClassLoader(); /** * Specify a temporary ClassLoader to use for type matching purposes. * Default is none, simply using the standard bean ClassLoader. * <p>A temporary ClassLoader is usually just specified if * <i>load-time weaving</i> is involved, to make sure that actual bean * classes are loaded as lazily as possible. The temporary loader is * then removed once the BeanFactory completes its bootstrap phase. * @since 2.5 */ void setTempClassLoader(ClassLoader tempClassLoader); /** * Return the temporary ClassLoader to use for type matching purposes, * if any. * @since 2.5 */ ClassLoader getTempClassLoader(); /** * Set whether to cache bean metadata such as given bean definitions * (in merged fashion) and resolved bean classes. Default is on. * <p>Turn this flag off to enable hot-refreshing of bean definition objects * and in particular bean classes. If this flag is off, any creation of a bean * instance will re-query the bean class loader for newly resolved classes. */ void setCacheBeanMetadata(boolean cacheBeanMetadata); /** * Return whether to cache bean metadata such as given bean definitions * (in merged fashion) and resolved bean classes. */ boolean isCacheBeanMetadata(); /** * Specify the resolution strategy for expressions in bean definition values. * <p>There is no expression support active in a BeanFactory by default. * An ApplicationContext will typically set a standard expression strategy * here, supporting "#{...}" expressions in a Unified EL compatible style. * @since 3.0 */ void setBeanExpressionResolver(BeanExpressionResolver resolver); /** * Return the resolution strategy for expressions in bean definition values. * @since 3.0 */ BeanExpressionResolver getBeanExpressionResolver(); /** * Specify a Spring 3.0 ConversionService to use for converting * property values, as an alternative to JavaBeans PropertyEditors. * @since 3.0 */ void setConversionService(ConversionService conversionService); /** * Return the associated ConversionService, if any. * @since 3.0 */ ConversionService getConversionService(); /** * Add a PropertyEditorRegistrar to be applied to all bean creation processes. * <p>Such a registrar creates new PropertyEditor instances and registers them * on the given registry, fresh for each bean creation attempt. This avoids * the need for synchronization on custom editors; hence, it is generally * preferable to use this method instead of {@link #registerCustomEditor}. * @param registrar the PropertyEditorRegistrar to register */ void addPropertyEditorRegistrar(PropertyEditorRegistrar registrar); /** * Register the given custom property editor for all properties of the * given type. To be invoked during factory configuration. * <p>Note that this method will register a shared custom editor instance; * access to that instance will be synchronized for thread-safety. It is * generally preferable to use {@link #addPropertyEditorRegistrar} instead * of this method, to avoid for the need for synchronization on custom editors. * @param requiredType type of the property * @param propertyEditorClass the {@link PropertyEditor} class to register */ void registerCustomEditor(Class<?> requiredType, Class<? extends PropertyEditor> propertyEditorClass); /** * Initialize the given PropertyEditorRegistry with the custom editors * that have been registered with this BeanFactory. * @param registry the PropertyEditorRegistry to initialize */ void copyRegisteredEditorsTo(PropertyEditorRegistry registry); /** * Set a custom type converter that this BeanFactory should use for converting * bean property values, constructor argument values, etc. * <p>This will override the default PropertyEditor mechanism and hence make * any custom editors or custom editor registrars irrelevant. * @see #addPropertyEditorRegistrar * @see #registerCustomEditor * @since 2.5 */ void setTypeConverter(TypeConverter typeConverter); /** * Obtain a type converter as used by this BeanFactory. This may be a fresh * instance for each call, since TypeConverters are usually <i>not</i> thread-safe. * <p>If the default PropertyEditor mechanism is active, the returned * TypeConverter will be aware of all custom editors that have been registered. * @since 2.5 */ TypeConverter getTypeConverter(); /** * Add a String resolver for embedded values such as annotation attributes. * @param valueResolver the String resolver to apply to embedded values * @since 3.0 */ void addEmbeddedValueResolver(StringValueResolver valueResolver); /** * Resolve the given embedded value, e.g. an annotation attribute. * @param value the value to resolve * @return the resolved value (may be the original value as-is) * @since 3.0 */ String resolveEmbeddedValue(String value); /** * Add a new BeanPostProcessor that will get applied to beans created * by this factory. To be invoked during factory configuration. * <p>Note: Post-processors submitted here will be applied in the order of * registration; any ordering semantics expressed through implementing the * {@link org.springframework.core.Ordered} interface will be ignored. Note * that autodetected post-processors (e.g. as beans in an ApplicationContext) * will always be applied after programmatically registered ones. * @param beanPostProcessor the post-processor to register */ void addBeanPostProcessor(BeanPostProcessor beanPostProcessor); /** * Return the current number of registered BeanPostProcessors, if any. */ int getBeanPostProcessorCount(); /** * Register the given scope, backed by the given Scope implementation. * @param scopeName the scope identifier * @param scope the backing Scope implementation */ void registerScope(String scopeName, Scope scope); /** * Return the names of all currently registered scopes. * <p>This will only return the names of explicitly registered scopes. * Built-in scopes such as "singleton" and "prototype" won't be exposed. * @return the array of scope names, or an empty array if none * @see #registerScope */ String[] getRegisteredScopeNames(); /** * Return the Scope implementation for the given scope name, if any. * <p>This will only return explicitly registered scopes. * Built-in scopes such as "singleton" and "prototype" won't be exposed. * @param scopeName the name of the scope * @return the registered Scope implementation, or {@code null} if none * @see #registerScope */ Scope getRegisteredScope(String scopeName); /** * Provides a security access control context relevant to this factory. * @return the applicable AccessControlContext (never {@code null}) * @since 3.0 */ AccessControlContext getAccessControlContext(); /** * Copy all relevant configuration from the given other factory. * <p>Should include all standard configuration settings as well as * BeanPostProcessors, Scopes, and factory-specific internal settings. * Should not include any metadata of actual bean definitions, * such as BeanDefinition objects and bean name aliases. * @param otherFactory the other BeanFactory to copy from */ void copyConfigurationFrom(ConfigurableBeanFactory otherFactory); /** * Given a bean name, create an alias. We typically use this method to * support names that are illegal within XML ids (used for bean names). * <p>Typically invoked during factory configuration, but can also be * used for runtime registration of aliases. Therefore, a factory * implementation should synchronize alias access. * @param beanName the canonical name of the target bean * @param alias the alias to be registered for the bean * @throws BeanDefinitionStoreException if the alias is already in use */ void registerAlias(String beanName, String alias) throws BeanDefinitionStoreException; /** * Resolve all alias target names and aliases registered in this * factory, applying the given StringValueResolver to them. * <p>The value resolver may for example resolve placeholders * in target bean names and even in alias names. * @param valueResolver the StringValueResolver to apply * @since 2.5 */ void resolveAliases(StringValueResolver valueResolver); /** * Return a merged BeanDefinition for the given bean name, * merging a child bean definition with its parent if necessary. * Considers bean definitions in ancestor factories as well. * @param beanName the name of the bean to retrieve the merged definition for * @return a (potentially merged) BeanDefinition for the given bean * @throws NoSuchBeanDefinitionException if there is no bean definition with the given name * @since 2.5 */ BeanDefinition getMergedBeanDefinition(String beanName) throws NoSuchBeanDefinitionException; /** * Determine whether the bean with the given name is a FactoryBean. * @param name the name of the bean to check * @return whether the bean is a FactoryBean * ({@code false} means the bean exists but is not a FactoryBean) * @throws NoSuchBeanDefinitionException if there is no bean with the given name * @since 2.5 */ boolean isFactoryBean(String name) throws NoSuchBeanDefinitionException; /** * Explicitly control the current in-creation status of the specified bean. * For container-internal use only. * @param beanName the name of the bean * @param inCreation whether the bean is currently in creation * @since 3.1 */ void setCurrentlyInCreation(String beanName, boolean inCreation); /** * Determine whether the specified bean is currently in creation. * @param beanName the name of the bean * @return whether the bean is currently in creation * @since 2.5 */ boolean isCurrentlyInCreation(String beanName); /** * Register a dependent bean for the given bean, * to be destroyed before the given bean is destroyed. * @param beanName the name of the bean * @param dependentBeanName the name of the dependent bean * @since 2.5 */ void registerDependentBean(String beanName, String dependentBeanName); /** * Return the names of all beans which depend on the specified bean, if any. * @param beanName the name of the bean * @return the array of dependent bean names, or an empty array if none * @since 2.5 */ String[] getDependentBeans(String beanName); /** * Return the names of all beans that the specified bean depends on, if any. * @param beanName the name of the bean * @return the array of names of beans which the bean depends on, * or an empty array if none * @since 2.5 */ String[] getDependenciesForBean(String beanName); /** * Destroy the given bean instance (usually a prototype instance * obtained from this factory) according to its bean definition. * <p>Any exception that arises during destruction should be caught * and logged instead of propagated to the caller of this method. * @param beanName the name of the bean definition * @param beanInstance the bean instance to destroy */ void destroyBean(String beanName, Object beanInstance); /** * Destroy the specified scoped bean in the current target scope, if any. * <p>Any exception that arises during destruction should be caught * and logged instead of propagated to the caller of this method. * @param beanName the name of the scoped bean */ void destroyScopedBean(String beanName); /** * Destroy all singleton beans in this factory, including inner beans that have * been registered as disposable. To be called on shutdown of a factory. * <p>Any exception that arises during destruction should be caught * and logged instead of propagated to the caller of this method. */ void destroySingletons(); }
ConfigurableListableBeanFactory 它同时继承了ListableBeanFactory，AutowireCapableBeanFactory和ConfigurableBeanFactory，提供了对bean定义的分析和修改的便利方法，同时也提供了对单例的预实例化。
public interface ConfigurableListableBeanFactory extends ListableBeanFactory, AutowireCapableBeanFactory, ConfigurableBeanFactory { /** * Ignore the given dependency type for autowiring: * for example, String. Default is none. * @param type the dependency type to ignore */ void ignoreDependencyType(Class<?> type); /** * Ignore the given dependency interface for autowiring. * <p>This will typically be used by application contexts to register * dependencies that are resolved in other ways, like BeanFactory through * BeanFactoryAware or ApplicationContext through ApplicationContextAware. * <p>By default, only the BeanFactoryAware interface is ignored. * For further types to ignore, invoke this method for each type. * @param ifc the dependency interface to ignore * @see org.springframework.beans.factory.BeanFactoryAware * @see org.springframework.context.ApplicationContextAware */ void ignoreDependencyInterface(Class<?> ifc); /** * Register a special dependency type with corresponding autowired value. * <p>This is intended for factory/context references that are supposed * to be autowirable but are not defined as beans in the factory: * e.g. a dependency of type ApplicationContext resolved to the * ApplicationContext instance that the bean is living in. * <p>Note: There are no such default types registered in a plain BeanFactory, * not even for the BeanFactory interface itself. * @param dependencyType the dependency type to register. This will typically * be a base interface such as BeanFactory, with extensions of it resolved * as well if declared as an autowiring dependency (e.g. ListableBeanFactory), * as long as the given value actually implements the extended interface. * @param autowiredValue the corresponding autowired value. This may also be an * implementation of the {@link org.springframework.beans.factory.ObjectFactory} * interface, which allows for lazy resolution of the actual target value. */ void registerResolvableDependency(Class<?> dependencyType, Object autowiredValue); /** * Determine whether the specified bean qualifies as an autowire candidate, * to be injected into other beans which declare a dependency of matching type. * <p>This method checks ancestor factories as well. * @param beanName the name of the bean to check * @param descriptor the descriptor of the dependency to resolve * @return whether the bean should be considered as autowire candidate * @throws NoSuchBeanDefinitionException if there is no bean with the given name */ boolean isAutowireCandidate(String beanName, DependencyDescriptor descriptor) throws NoSuchBeanDefinitionException; /** * Return the registered BeanDefinition for the specified bean, allowing access * to its property values and constructor argument value (which can be * modified during bean factory post-processing). * <p>A returned BeanDefinition object should not be a copy but the original * definition object as registered in the factory. This means that it should * be castable to a more specific implementation type, if necessary. * <p><b>NOTE:</b> This method does <i>not</i> consider ancestor factories. * It is only meant for accessing local bean definitions of this factory. * @param beanName the name of the bean * @return the registered BeanDefinition * @throws NoSuchBeanDefinitionException if there is no bean with the given name * defined in this factory */ BeanDefinition getBeanDefinition(String beanName) throws NoSuchBeanDefinitionException; /** * Freeze all bean definitions, signalling that the registered bean definitions * will not be modified or post-processed any further. * <p>This allows the factory to aggressively cache bean definition metadata. */ void freezeConfiguration(); /** * Return whether this factory's bean definitions are frozen, * i.e. are not supposed to be modified or post-processed any further. * @return {@code true} if the factory's configuration is considered frozen */ boolean isConfigurationFrozen(); /** * Ensure that all non-lazy-init singletons are instantiated, also considering * {@link org.springframework.beans.factory.FactoryBean FactoryBeans}. * Typically invoked at the end of factory setup, if desired. * @throws BeansException if one of the singleton beans could not be created. * Note: This may have left the factory with some beans already initialized! * Call {@link #destroySingletons()} for full cleanup in this case. * @see #destroySingletons() */ void preInstantiateSingletons() throws BeansException; }
小结：
1. beanFactory有四个子接口，添加了四种不同的能力，分别是：
SimpleJndiBeanFactory：支持jndi。
AutowireCapableBeanFactory：支持自动装配。
HierarchicalBeanFactory：支持层次结构，ConfigurableListableBeanFactory实现了HierarchicalBeanFactory，提供了可配置功能。
ListableBeanFactory：支持枚举。
2. bean经过两次进化，到了DefaultListableBeanFactory，完善了bean容器的功能。
DefaultListableBeanFactory实现了AbstractAutowireCapableBeanFactory,ConfigurableListableBeanFactory, BeanDefinitionRegistry, Serializable等多个接口。
3.最终进化：
XmlBeanFactory 通过从xml文件中读取bean的定义和依赖。
下一节，重点了解AbstractAutowireCapableBeanFactory，BeanDefinitionRegistry接口，全面了解bean factory的完整进化历史。