类 InjectionPoint
- java.lang.Object
- org.springframework.beans.factory.InjectionPoint
- 直接已知子类:
DependencyDescriptor
public class InjectionPoint extends Object
A simple descriptor for an injection point, pointing to a method/constructor parameter or a field. Exposed byUnsatisfiedDependencyException
. Also available as an argument for factory methods, reacting to the requesting injection point for building a customized bean instance.- 从以下版本开始:
- 4.3
- 作者:
- Juergen Hoeller
- 另请参阅:
UnsatisfiedDependencyException.getInjectionPoint()
,DependencyDescriptor
字段概要
字段 修饰符和类型 字段 说明 protected Field
field
protected MethodParameter
methodParameter
构造器概要
构造器 限定符 构造器 说明 protected
InjectionPoint()
Just available for serialization purposes in subclasses.InjectionPoint(Field field)
Create an injection point descriptor for a field.protected
InjectionPoint(InjectionPoint original)
Copy constructor.InjectionPoint(MethodParameter methodParameter)
Create an injection point descriptor for a method or constructor parameter.
方法概要
所有方法 实例方法 具体方法 修饰符和类型 方法 说明 boolean
equals(Object other)
AnnotatedElement
getAnnotatedElement()
Return the wrapped annotated element.<A extends Annotation>
AgetAnnotation(Class<A> annotationType)
Retrieve a field/parameter annotation of the given type, if any.Annotation[]
getAnnotations()
Obtain the annotations associated with the wrapped field or method/constructor parameter.Class<?>
getDeclaredType()
Return the type declared by the underlying field or method/constructor parameter, indicating the injection type.Field
getField()
Return the wrapped Field, if any.Member
getMember()
Returns the wrapped member, containing the injection point.MethodParameter
getMethodParameter()
Return the wrapped MethodParameter, if any.int
hashCode()
String
toString()
字段详细资料
methodParameter
protected MethodParameter methodParameter
构造器详细资料
InjectionPoint
public InjectionPoint(MethodParameter methodParameter)
Create an injection point descriptor for a method or constructor parameter.- 参数:
methodParameter
- the MethodParameter to wrap
InjectionPoint
public InjectionPoint(Field field)
Create an injection point descriptor for a field.- 参数:
field
- the field to wrap
InjectionPoint
protected InjectionPoint(InjectionPoint original)
Copy constructor.- 参数:
original
- the original descriptor to create a copy from
InjectionPoint
protected InjectionPoint()
Just available for serialization purposes in subclasses.
方法详细资料
getMethodParameter
public MethodParameter getMethodParameter()
Return the wrapped MethodParameter, if any.Note: Either MethodParameter or Field is available.
- 返回:
- the MethodParameter, or
null
if none
getField
public Field getField()
Return the wrapped Field, if any.Note: Either MethodParameter or Field is available.
- 返回:
- the Field, or
null
if none
getAnnotations
public Annotation[] getAnnotations()
Obtain the annotations associated with the wrapped field or method/constructor parameter.
getAnnotation
public <A extends Annotation> A getAnnotation(Class<A> annotationType)
Retrieve a field/parameter annotation of the given type, if any.- 参数:
annotationType
- the annotation type to retrieve- 返回:
- the annotation instance, or
null
if none found - 从以下版本开始:
- 4.3.9
getDeclaredType
public Class<?> getDeclaredType()
Return the type declared by the underlying field or method/constructor parameter, indicating the injection type.
getMember
public Member getMember()
Returns the wrapped member, containing the injection point.- 返回:
- the Field / Method / Constructor as Member
getAnnotatedElement
public AnnotatedElement getAnnotatedElement()
Return the wrapped annotated element.Note: In case of a method/constructor parameter, this exposes the annotations declared on the method or constructor itself (i.e. at the method/constructor level, not at the parameter level). Use
getAnnotations()
to obtain parameter-level annotations in such a scenario, transparently with corresponding field annotations.- 返回:
- the Field / Method / Constructor as AnnotatedElement