import java.util.Set;
import org.springframework.beans.BeansException;
import org.springframework.beans.TypeConverter;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.NoSuchBeanDefinitionException;
import org.springframework.beans.factory.NoUniqueBeanDefinitionException;
import org.springframework.lang.Nullable;
/**
* Extension of the {@link org.springframework.beans.factory.BeanFactory}
* interface to be implemented by bean factories that are capable of
* autowiring, provided that they want to expose this functionality for
* existing bean instances.
*
* <p>This subinterface of BeanFactory is not meant to be used in normal
* application code: stick to {@link org.springframework.beans.factory.BeanFactory}
* or {@link org.springframework.beans.factory.ListableBeanFactory} for
* typical use cases.
*
* <p>Integration code for other frameworks can leverage this interface to
* wire and populate existing bean instances that Spring does not control
* the lifecycle of. This is particularly useful for WebWork Actions and
* Tapestry Page objects, for example.
*
* <p>Note that this interface is not implemented by
* {@link org.springframework.context.ApplicationContext} facades,
* as it is hardly ever used by application code. That said, it is available
* from an application context too, accessible through ApplicationContext's
* {@link org.springframework.context.ApplicationContext#getAutowireCapableBeanFactory()}
* method.
*
* <p>You may also implement the {@link org.springframework.beans.factory.BeanFactoryAware}
* interface, which exposes the internal BeanFactory even when running in an
* ApplicationContext, to get access to an AutowireCapableBeanFactory:
* simply cast the passed-in BeanFactory to AutowireCapableBeanFactory.
*
* @author Juergen Hoeller
* @since 04.12.2003
* @see org.springframework.beans.factory.BeanFactoryAware
* @see org.springframework.beans.factory.config.ConfigurableListableBeanFactory
* @see org.springframework.context.ApplicationContext#getAutowireCapableBeanFactory()
*/
//通過上面注釋信息可以得知這個接口類是創(chuàng)建Bean的Bean工程的拓展類蹈丸，全中文名為自動裝配Bean工程
//其作用為注冊進Bean工廠的數據自動裝配回右，該接口類中提供了各種自動裝配Bean實例的常量等..可以根據
//不同方式來裝配Bean
public interface AutowireCapableBeanFactory extends BeanFactory {
/**
* 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
*/
/**
* 常量锯仪，用于標識外部自動裝配功能是否可用齐媒。但是此標識不影響正常的（基于注解的等）自動裝配功能的使用
*/
int AUTOWIRE_NO = 0;
/**
* Constant that indicates autowiring bean properties by name
* (applying to all bean property setters).
* @see #createBean
* @see #autowire
* @see #autowireBeanProperties
*/
//根據名稱自動裝配Bean
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
*/
//根據類型裝配Bean
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
*/
//可用于構造器的Bean裝配
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.
*/
//標識按照貪婪策略匹配出的最符合的構造方法來自動裝配的常量
@Deprecated
int AUTOWIRE_AUTODETECT = 4;
/**
* Suffix for the "original instance" convention when initializing an existing
* bean instance: to be appended to the fully-qualified bean class name,
* e.g. "com.mypackage.MyClass.ORIGINAL", in order to enforce the given instance
* to be returned, i.e. no proxies etc.
* @since 5.1
* @see #initializeBean(Object, String)
* @see #applyBeanPostProcessorsBeforeInitialization(Object, String)
* @see #applyBeanPostProcessorsAfterInitialization(Object, String)
*/
//根據約定的后綴來裝配Bean
String ORIGINAL_INSTANCE_SUFFIX = ".ORIGINAL";
//-------------------------------------------------------------------------
// 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 initialization callbacks.
* It does <i>not</i> imply traditional by-name or by-type autowiring of properties;
* use {@link #createBean(Class, int, boolean)} for those purposes.
* @param beanClass the class of the bean to create
* @return the new bean instance
* @throws BeansException if instantiation or wiring failed
*/
//具備注解方式創(chuàng)建Bean
//表明這是用于創(chuàng)建Bean實例箭养，但是不具備自動裝配涎跨，如果創(chuàng)建失敗則拋出BeansException異常
<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 those purposes.
* @param existingBean the existing bean instance
* @throws BeansException if wiring failed
*/
//表明主要是用于處理Bean中帶有注解的域和方法得湘，來創(chuàng)建Bean實例募狂，也不具備自動裝配
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
*/
/**
*配置給定的原始bean:autowiringbean屬性畜份，應用
*bean屬性值诞帐，應用工廠回調，如{@code setBeanName}
*和{@code setBeanFactory}爆雹，并應用所有bean后處理器
*完全應用相應bean定義指定的配置停蕉。
*該方法需要給定名稱的bean定義
*@param existingBean現(xiàn)有的bean實例
*@param beanName bean的名稱，如果需要钙态，可以傳遞給它
*（必須提供該名稱的bean定義）
*@返回要使用的bean實例慧起，可以是原始的，也可以是包裝的
*@throws org.springframework.beans.factory.NoSuchBeanDefinitionException異常
*如果沒有具有給定名稱的bean定義
*如果初始化失敗册倒，拋出異常throws BeansException
*/
Object configureBean(Object existingBean, String beanName) throws BeansException;
//-------------------------------------------------------------------------
// Specialized methods for fine-grained control over the bean lifecycle
//對bean生命周期進行細粒度控制的專門方法
//-------------------------------------------------------------------------
/**
* 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
*/
/**
*使用指定的自動連線策略蚓挤。此處支持此接口中定義的所有常量。
*執(zhí)行bean的完全初始化驻子，包括所有適用的
*在{@autowire}提供的功能中屈尼，添加了初始化Bean行為。
*@param beanClass要創(chuàng)建的bean的類
*@param autowireMode按名稱或類型拴孤，使用此接口中的常量
*@param dependency檢查是否對對象執(zhí)行依賴性檢查
*（不適用于自動連接構造函數）
*@return新bean實例
*如果實例化或連接失敗脾歧，將拋出BeansException異常
*@AUTOWIRE 注解按名稱裝配Bean
*/
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
*/
/**
*用指定的autowire實例化給定類的新bean實例，此處支持此接口中定義的所有常量演熟。
*也可以用{@AUTOWIRE調用鞭执，以便應用，在實例化回調之前（例如芒粹，對于注釋驅動的注入）兄纺。
*不能應用Bean后處理器
*回調或執(zhí)行bean的任何進一步初始化。此接口
*例如化漆，為這些目的提供不同的細粒度操作
*初始化Bean但是估脆，初始化Bean后處理器回調將應用于實例的構造（如果適用）。
*@param beanClass要實例化的bean的類
*@param autowireMode按名稱或類型座云，使用此接口中的常量
*@param dependencyCheck是否對對象執(zhí)行依賴性檢查
*bean實例中的引用（不適用于自動連接構造函數疙赠，因此被忽略了）
*@return新bean實例
*如果實例化或連接失敗付材，@拋出BeansException
*@見#initializeBean
*@applybeanpostprocessors在初始化之前
*@applybeanpostprocessors初始化后
*/
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
*/
/**
*按名稱或類型自動關聯(lián)給定bean實例的bean屬性。
*也可以用{@AUTOWIRE調用圃阳，以便應用實例化后回調（例如注釋驅動的注入）厌衔。
*不能應用在Bean后處理器
*回調或執(zhí)行bean的任何進一步初始化。此接口 例如捍岳，為這些目的提供不同的細粒度操作
*初始化Bean但是富寿，Bean后處理器回調將應用于實例的配置（如果適用）。
*@param existingBean現(xiàn)有的bean實例
*@param autowireMode按名稱或類型锣夹，使用此接口中的常量
*@param dependencyCheck是否對對象執(zhí)行依賴性檢查
*如果裝配失敗页徐，@拋出BeansException
*/
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
*/
/**
*將具有給定名稱的bean定義的屬性值應用于
*給定的bean實例。bean定義可以定義
*自包含bean银萍，重用它的屬性值泞坦，或者只是屬性值
*用于現(xiàn)有bean實例。
*此方法不具有autowire bean屬性它只是適用的顯式定義的屬性值砖顷。使用autowireBeanProperties方法自動關聯(lián)現(xiàn)有bean實例。
*此方法需要給定名稱的bean定義
*不能應用BeanPostProcessor（Bean后處理器）
*回調或執(zhí)行bean的任何進一步初始化赃梧。此接口
*例如滤蝠，為這些目的提供不同的細粒度操作
*initializeBean但是，InstantiationAwareBeanPostProcessor回調將應用于實例的配置（如果適用）授嘀。
*@param existingBean現(xiàn)有的bean實例
*@param beanName bean工廠中bean定義的名稱
*（必須提供該名稱的bean定義）
*@throws org.springframework.beans.factory.NoSuchBeanDefinitionException異常
*如果沒有具有給定名稱的bean定義
*如果應用屬性值失敗物咳，@throws BeansException
*/
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};
* can follow the {@link #ORIGINAL_INSTANCE_SUFFIX} convention in order to
* enforce the given instance to be returned, i.e. no proxies etc)
* @return the bean instance to use, either the original or a wrapped one
* @throws BeansException if the initialization failed
* @see #ORIGINAL_INSTANCE_SUFFIX
*/
/**
*初始化給定的原始bean，應用工廠回調
*例如{setBeanName}和{setBeanFactory}蹄皱，
*還應用了所有bean后處理器（包括可以包裝給定的Bean）览闰。
*給定名稱的bean定義不必存在Bean工廠。只需使用傳入的bean名稱
*用于回調巷折，但未根據已注冊的bean定義進行檢查压鉴。
*@param existingBean現(xiàn)有的bean實例
*@param beanName bean的名稱，如果需要锻拘，可以傳遞給它
*（僅傳遞給beanpstoprocessor beanpstoprocessors
*可以遵循ORIGINAL_INSTANCE_SUFFIX后綴約定匹配
*強制返回給定實例油吭，即沒有代理等）
*@返回要使用的bean實例，可以是原始的署拟，也可以是包裝的
*如果初始化失敗婉宰，@throws BeansException
*/
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 existing bean instance
* @param beanName the name of the bean, to be passed to it if necessary
* (only passed to {@link BeanPostProcessor BeanPostProcessors};
* can follow the {@link #ORIGINAL_INSTANCE_SUFFIX} convention in order to
* enforce the given instance to be returned, i.e. no proxies etc)
* @return the bean instance to use, either the original or a wrapped one
* @throws BeansException if any post-processing failed
* @see BeanPostProcessor#postProcessBeforeInitialization
* @see #ORIGINAL_INSTANCE_SUFFIX
*/
/**
*將{ BeanPostProcessor BeanPostProcessors}應用于給定的現(xiàn)有bean
*實例，調用它們的{postProcessBeforeInitialization}方法推穷。
*返回的bean實例可能是原始bean的包裝器心包。
*@param existingBean現(xiàn)有的bean實例
*@param beanName bean的名稱，如果需要馒铃，可以傳遞給它
*（僅傳遞給{beanpstoprocessor beanpstoprocessors}蟹腾；
*可以遵循{@link#ORIGINAL_INSTANCE_SUFFIX}約定
*強制返回給定實例痕惋，即沒有代理等）
*如果任何后處理失敗，@throws BeansException
*BeanPostProcessor#初始化前的后處理
*/
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 existing bean instance
* @param beanName the name of the bean, to be passed to it if necessary
* (only passed to {@link BeanPostProcessor BeanPostProcessors};
* can follow the {@link #ORIGINAL_INSTANCE_SUFFIX} convention in order to
* enforce the given instance to be returned, i.e. no proxies etc)
* @return the bean instance to use, either the original or a wrapped one
* @throws BeansException if any post-processing failed
* @see BeanPostProcessor#postProcessAfterInitialization
* @see #ORIGINAL_INSTANCE_SUFFIX
*/
/**
*將{@link BeanPostProcessor BeanPostProcessors}應用于給定的現(xiàn)有bean
*實例岭佳，調用它們的{@CodePostProcessAfterInitialization}方法血巍。
*返回的bean實例可能是原始bean的包裝器。
*@param existingBean現(xiàn)有的bean實例
*@param beanName bean的名稱珊随，如果需要述寡，可以傳遞給它
*（僅傳遞給{@link beanpstoprocessor beanpstoprocessors}；
*可以遵循{@link#ORIGINAL_INSTANCE_SUFFIX}約定
*強制返回給定實例叶洞，即沒有代理等）
*@返回要使用的bean實例鲫凶，可以是原始的，也可以是包裝的
*如果任何后處理失敗衩辟，@throws BeansException
*BeanPostProcessor#初始化后的后處理器
*/
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
*/
/**
*銷毀給定的bean實例（通常來自{@link#createBean}）螟炫，
*應用{@link org.springframework.beans.factory.DisposableBean}合同以及
*已注冊{@link DestructionAwareBeanPostProcessor DestructionAwareBeanPostProcessors}。
*<p>銷毀過程中出現(xiàn)的任何異常都應被捕獲
*并記錄艺晴，而不是傳播到此方法的調用方昼钻。
*@param existingBean要銷毀的bean實例
*/
void destroyBean(Object existingBean);
//-------------------------------------------------------------------------
// Delegate methods for resolving injection points
//-------------------------------------------------------------------------
/**
* Resolve the bean instance that uniquely matches the given object type, if any,
* including its bean name.
* <p>This is effectively a variant of {@link #getBean(Class)} which preserves the
* bean name of the matching instance.
* @param requiredType type the bean must match; can be an interface or superclass
* @return the bean name plus bean instance
* @throws NoSuchBeanDefinitionException if no matching bean was found
* @throws NoUniqueBeanDefinitionException if more than one matching bean was found
* @throws BeansException if the bean could not be created
* @since 4.3.3
* @see #getBean(Class)
*/
/**
*解析唯一匹配給定對象類型的bean實例（如果有的話），
*包括它的豆名封寞。
*<p>這實際上是{@link#getBean（Class）}的一個變體然评，它保留了
*匹配實例的bean名稱。
*@param requiredType bean必須匹配的類型狈究；可以是接口或超類
*@return bean name加bean實例
*如果找不到匹配的bean碗淌，@拋出NoSuchBeanDefinitionException
*如果找到多個匹配bean，@throws NoUniqueBeanDefinitionException
*如果無法創(chuàng)建bean抖锥，@throws BeansException
*@自4.3.3
*@see#getBean（類）
*/
<T> NamedBeanHolder<T> resolveNamedBean(Class<T> requiredType) throws BeansException;
/**
* Resolve a bean instance for the given bean name, providing a dependency descriptor
* for exposure to target factory methods.
* <p>This is effectively a variant of {@link #getBean(String, Class)} which supports
* factory methods with an {@link org.springframework.beans.factory.InjectionPoint}
* argument.
* @param name the name of the bean to look up
* @param descriptor the dependency descriptor for the requesting injection point
* @return the corresponding bean instance
* @throws NoSuchBeanDefinitionException if there is no bean with the specified name
* @throws BeansException if the bean could not be created
* @since 5.1.5
* @see #getBean(String, Class)
*/
/**
*為給定的bean名稱解析bean實例亿眠，提供依賴描述符
*用于接觸目標工廠方法。
*<p>這實際上是{@link#getBean（String磅废，Class）}的一個變體纳像，它支持
*帶有{@link org.springframework.beans.factory.InjectionPoint}的工廠方法
*爭論。
*@param name要查找的bean的名稱
*@param descriptor請求注入點的依賴關系描述符
*@返回對應的bean實例
*如果沒有具有指定名稱的bean拯勉，@拋出NoSuchBeanDefinitionException
*如果無法創(chuàng)建bean爹耗，@throws BeansException
*@自5.1.5
*@see#getBean（字符串，類）
*/
Object resolveBeanByName(String name, DependencyDescriptor descriptor) throws BeansException;
/**
* Resolve the specified dependency against the beans defined in this factory.
* @param descriptor the descriptor for the dependency (field/method/constructor)
* @param requestingBeanName the name of the bean which declares the given dependency
* @return the resolved object, or {@code null} if none found
* @throws NoSuchBeanDefinitionException if no matching bean was found
* @throws NoUniqueBeanDefinitionException if more than one matching bean was found
* @throws BeansException if dependency resolution failed for any other reason
* @since 2.5
* @see #resolveDependency(DependencyDescriptor, String, Set, TypeConverter)
*/
/**
*根據此工廠中定義的bean解析指定的依賴關系谜喊。
*@param descriptor依賴項的描述符（字段/方法/構造函數）
*@param requestingBeanName聲明給定依賴項的bean的名稱
*@返回已解析的對象潭兽，如果找不到，則返回{@code null}
*如果找不到匹配的bean斗遏，@拋出NoSuchBeanDefinitionException
*如果找到多個匹配bean山卦，@throws NoUniqueBeanDefinitionException
*如果依賴項解析因任何其他原因失敗，@throws BeansException
*@自2.5
*@see#resolveDependency（DependencyDescriptor、String账蓉、Set枚碗、TypeConverter）
*/
@Nullable
Object resolveDependency(DependencyDescriptor descriptor, @Nullable String requestingBeanName) throws BeansException;
/**
* Resolve the specified dependency against the beans defined in this factory.
* @param descriptor the descriptor for the dependency (field/method/constructor)
* @param requestingBeanName the name of the bean which declares the given dependency
* @param autowiredBeanNames a Set that all names of autowired beans (used for
* resolving the given 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 NoSuchBeanDefinitionException if no matching bean was found
* @throws NoUniqueBeanDefinitionException if more than one matching bean was found
* @throws BeansException if dependency resolution failed for any other reason
* @since 2.5
* @see DependencyDescriptor
*/
/**
*根據此工廠中定義的bean解析指定的依賴關系。
*@param descriptor依賴項的描述符（字段/方法/構造函數）
*@param requestingBeanName聲明給定依賴項的bean的名稱
*@param autowiredBeanNames一個集合铸本，所有autowired bean的名稱（用于
*解析給定的依賴關系）應該添加到
*@param typeConverter用于填充數組和集合的typeConverter
*@返回已解析的對象肮雨，如果找不到，則返回{@code null}
*如果找不到匹配的bean箱玷，@拋出NoSuchBeanDefinitionException
*如果找到多個匹配bean怨规，@throws NoUniqueBeanDefinitionException
*如果依賴項解析因任何其他原因失敗，@throws BeansException
*@自2.5
*@參見DependencyDescriptor
*/
@Nullable
Object resolveDependency(DependencyDescriptor descriptor, @Nullable String requestingBeanName,
@Nullable Set<String> autowiredBeanNames, @Nullable TypeConverter typeConverter) throws BeansException;
}
AutowireCapableBeanFactory源碼
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