程序包 org.springframework.boot.util

类 Instantiator<T>

java.lang.Object

org.springframework.boot.util.Instantiator<T>

类型参数:

T - the type to instantiate

public class Instantiator<T>
extends Object

Simple factory used to instantiate objects by injecting available parameters.

从以下版本开始:

2.4.0

作者:

Phillip Webb, Scott Frederick

嵌套类概要

嵌套类

修饰符和类型	类	说明
static interface	Instantiator.AvailableParameters	Callback used to register available parameters.
static interface	Instantiator.FailureHandler	Strategy for handling a failure that occurs when instantiating a type.

构造器概要

构造器

构造器	说明
Instantiator(Class<?> type, Consumer<Instantiator.AvailableParameters> availableParameters)	Create a new Instantiator instance for the given type.
Instantiator(Class<?> type, Consumer<Instantiator.AvailableParameters> availableParameters, Instantiator.FailureHandler failureHandler)	Create a new Instantiator instance for the given type.

方法概要

修饰符和类型	方法	说明
<A> A	getArg(Class<A> type)	Get an injectable argument instance for the given type.
T	instantiate(ClassLoader classLoader, String name)	Instantiate the given set of class name, injecting constructor arguments as necessary.
List<T>	instantiate(ClassLoader classLoader, Collection<String> names)	Instantiate the given set of class name, injecting constructor arguments as necessary.
T	instantiate(String name)	Instantiate the given set of class name, injecting constructor arguments as necessary.
List<T>	instantiate(Collection<String> names)	Instantiate the given set of class name, injecting constructor arguments as necessary.
T	instantiateType(Class<?> type)	Instantiate the given class, injecting constructor arguments as necessary.
List<T>	instantiateTypes(Collection<Class<?>> types)	Instantiate the given set of classes, injecting constructor arguments as necessary.

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

Instantiator

public Instantiator(Class<?> type,
 Consumer<Instantiator.AvailableParameters> availableParameters)

Create a new Instantiator instance for the given type.

参数:

type - the type to instantiate

availableParameters - consumer used to register available parameters

Instantiator

public Instantiator(Class<?> type,
 Consumer<Instantiator.AvailableParameters> availableParameters,
 Instantiator.FailureHandler failureHandler)

Create a new Instantiator instance for the given type.

参数:

type - the type to instantiate

availableParameters - consumer used to register available parameters

failureHandler - a Instantiator.FailureHandler that will be called in case of failure when instantiating objects

从以下版本开始:

2.7.0

方法详细资料

instantiate

public List<T> instantiate(Collection<String> names)

Instantiate the given set of class name, injecting constructor arguments as necessary.

参数:

names - the class names to instantiate

返回:

a list of instantiated instances

instantiate

public List<T> instantiate(ClassLoader classLoader,
 Collection<String> names)

Instantiate the given set of class name, injecting constructor arguments as necessary.

参数:

classLoader - the source classloader

names - the class names to instantiate

返回:

a list of instantiated instances

从以下版本开始:

2.4.8

instantiate

public T instantiate(String name)

Instantiate the given set of class name, injecting constructor arguments as necessary.

参数:

name - the class name to instantiate

返回:

an instantiated instance

从以下版本开始:

3.4.0

instantiate

public T instantiate(ClassLoader classLoader,
 String name)

Instantiate the given set of class name, injecting constructor arguments as necessary.

参数:

classLoader - the source classloader

name - the class name to instantiate

返回:

an instantiated instance

从以下版本开始:

3.4.0

instantiateType

public T instantiateType(Class<?> type)

Instantiate the given class, injecting constructor arguments as necessary.

参数:

type - the type to instantiate

返回:

an instantiated instance

从以下版本开始:

3.4.0

instantiateTypes

public List<T> instantiateTypes(Collection<Class<?>> types)

Instantiate the given set of classes, injecting constructor arguments as necessary.

参数:

types - the types to instantiate

返回:

a list of instantiated instances

从以下版本开始:

2.4.8

getArg

public <A> A getArg(Class<A> type)

Get an injectable argument instance for the given type. This method can be used when manually instantiating an object without reflection.

类型参数:

A - the argument type

参数:

type - the argument type

返回:

the argument to inject or null

从以下版本开始:

3.4.0