程序包 org.springframework.boot

类 DefaultBootstrapContext

java.lang.Object

org.springframework.boot.DefaultBootstrapContext

所有已实现的接口:

BootstrapContext, BootstrapRegistry, ConfigurableBootstrapContext

public class DefaultBootstrapContext
extends Object
implements ConfigurableBootstrapContext

Default ConfigurableBootstrapContext implementation.

从以下版本开始:

2.4.0

作者:

Phillip Webb

嵌套类概要

从接口继承的嵌套类/接口 org.springframework.boot.BootstrapRegistry

BootstrapRegistry.InstanceSupplier<T>, BootstrapRegistry.Scope

构造器概要

构造器

构造器	说明
DefaultBootstrapContext()

方法概要

修饰符和类型	方法	说明
void	addCloseListener(ApplicationListener<BootstrapContextClosedEvent> listener)	Add an ApplicationListener that will be called with a BootstrapContextClosedEvent when the BootstrapContext is closed and the ApplicationContext has been prepared.
void	close(ConfigurableApplicationContext applicationContext)	Method to be called when BootstrapContext is closed and the ApplicationContext is prepared.
<T> T	get(Class<T> type)	Return an instance from the context if the type has been registered.
<T> T	getOrElse(Class<T> type, T other)	Return an instance from the context if the type has been registered.
<T> T	getOrElseSupply(Class<T> type, Supplier<T> other)	Return an instance from the context if the type has been registered.
<T, X extends Throwable> T	getOrElseThrow(Class<T> type, Supplier<? extends X> exceptionSupplier)	Return an instance from the context if the type has been registered.
<T> BootstrapRegistry.InstanceSupplier<T>	getRegisteredInstanceSupplier(Class<T> type)	Return any existing BootstrapRegistry.InstanceSupplier for the given type.
<T> boolean	isRegistered(Class<T> type)	Return if a registration exists for the given type.
<T> void	register(Class<T> type, BootstrapRegistry.InstanceSupplier<T> instanceSupplier)	Register a specific type with the registry.
<T> void	registerIfAbsent(Class<T> type, BootstrapRegistry.InstanceSupplier<T> instanceSupplier)	Register a specific type with the registry if one is not already present.

从类继承的方法 java.lang.Object

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

构造器详细资料

DefaultBootstrapContext

public DefaultBootstrapContext()

方法详细资料

register

public <T> void register(Class<T> type,
 BootstrapRegistry.InstanceSupplier<T> instanceSupplier)

从接口复制的说明: BootstrapRegistry

Register a specific type with the registry. If the specified type has already been registered and has not been obtained as a singleton, it will be replaced.

指定者:

register 在接口中 BootstrapRegistry

类型参数:

T - the instance type

参数:

type - the instance type

instanceSupplier - the instance supplier

registerIfAbsent

public <T> void registerIfAbsent(Class<T> type,
 BootstrapRegistry.InstanceSupplier<T> instanceSupplier)

从接口复制的说明: BootstrapRegistry

Register a specific type with the registry if one is not already present.

指定者:

registerIfAbsent 在接口中 BootstrapRegistry

类型参数:

T - the instance type

参数:

type - the instance type

instanceSupplier - the instance supplier

isRegistered

public <T> boolean isRegistered(Class<T> type)

从接口复制的说明: BootstrapRegistry

Return if a registration exists for the given type.

指定者:

isRegistered 在接口中 BootstrapContext

指定者:

isRegistered 在接口中 BootstrapRegistry

类型参数:

T - the instance type

参数:

type - the instance type

返回:

true if the type has already been registered

getRegisteredInstanceSupplier

public <T> BootstrapRegistry.InstanceSupplier<T> getRegisteredInstanceSupplier(Class<T> type)

从接口复制的说明: BootstrapRegistry

Return any existing BootstrapRegistry.InstanceSupplier for the given type.

指定者:

getRegisteredInstanceSupplier 在接口中 BootstrapRegistry

类型参数:

T - the instance type

参数:

type - the instance type

返回:

the registered BootstrapRegistry.InstanceSupplier or null

addCloseListener

public void addCloseListener(ApplicationListener<BootstrapContextClosedEvent> listener)

从接口复制的说明: BootstrapRegistry

Add an ApplicationListener that will be called with a BootstrapContextClosedEvent when the BootstrapContext is closed and the ApplicationContext has been prepared.

指定者:

addCloseListener 在接口中 BootstrapRegistry

参数:

listener - the listener to add

get

public <T> T get(Class<T> type)
          throws IllegalStateException

从接口复制的说明: BootstrapContext

Return an instance from the context if the type has been registered. The instance will be created if it hasn't been accessed previously.

指定者:

get 在接口中 BootstrapContext

类型参数:

T - the instance type

参数:

type - the instance type

返回:

the instance managed by the context

抛出:

IllegalStateException - if the type has not been registered

getOrElse

public <T> T getOrElse(Class<T> type,
 T other)

从接口复制的说明: BootstrapContext

Return an instance from the context if the type has been registered. The instance will be created if it hasn't been accessed previously.

指定者:

getOrElse 在接口中 BootstrapContext

类型参数:

T - the instance type

参数:

type - the instance type

other - the instance to use if the type has not been registered

返回:

the instance

getOrElseSupply

public <T> T getOrElseSupply(Class<T> type,
 Supplier<T> other)

从接口复制的说明: BootstrapContext

Return an instance from the context if the type has been registered. The instance will be created if it hasn't been accessed previously.

指定者:

getOrElseSupply 在接口中 BootstrapContext

类型参数:

T - the instance type

参数:

type - the instance type

other - a supplier for the instance to use if the type has not been registered

返回:

the instance

getOrElseThrow

public <T,
X extends Throwable> T getOrElseThrow(Class<T> type,
 Supplier<? extends X> exceptionSupplier)
                                          throws X

从接口复制的说明: BootstrapContext

Return an instance from the context if the type has been registered. The instance will be created if it hasn't been accessed previously.

指定者:

getOrElseThrow 在接口中 BootstrapContext

类型参数:

T - the instance type

X - the exception to throw if the type is not registered

参数:

type - the instance type

exceptionSupplier - the supplier which will return the exception to be thrown

返回:

the instance managed by the context

抛出:

X - if the type has not been registered

close

public void close(ConfigurableApplicationContext applicationContext)

Method to be called when BootstrapContext is closed and the ApplicationContext is prepared.

参数:

applicationContext - the prepared context