类 PrioritizedParameterNameDiscoverer
- java.lang.Object
- org.springframework.core.PrioritizedParameterNameDiscoverer
- 所有已实现的接口:
ParameterNameDiscoverer
public class PrioritizedParameterNameDiscoverer extends Object implements ParameterNameDiscoverer
ParameterNameDiscoverer
implementation that tries several discoverer delegates in succession. Those added first in theaddDiscoverer
method have highest priority. If one returnsnull
, the next will be tried.The default behavior is to return
null
if no discoverer matches.- 从以下版本开始:
- 2.0
- 作者:
- Rod Johnson, Juergen Hoeller
构造器概要
构造器 构造器 说明 PrioritizedParameterNameDiscoverer()
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 void
addDiscoverer(ParameterNameDiscoverer pnd)
Add a furtherParameterNameDiscoverer
delegate to the list of discoverers that thisPrioritizedParameterNameDiscoverer
checks.String[]
getParameterNames(Constructor<?> ctor)
Return parameter names for a constructor, ornull
if they cannot be determined.String[]
getParameterNames(Method method)
Return parameter names for a method, ornull
if they cannot be determined.
构造器详细资料
PrioritizedParameterNameDiscoverer
public PrioritizedParameterNameDiscoverer()
方法详细资料
addDiscoverer
public void addDiscoverer(ParameterNameDiscoverer pnd)
Add a furtherParameterNameDiscoverer
delegate to the list of discoverers that thisPrioritizedParameterNameDiscoverer
checks.
getParameterNames
@Nullable public String[] getParameterNames(Method method)
从接口复制的说明:ParameterNameDiscoverer
Return parameter names for a method, ornull
if they cannot be determined.Individual entries in the array may be
null
if parameter names are only available for some parameters of the given method but not for others. However, it is recommended to use stub parameter names instead wherever feasible.- 指定者:
getParameterNames
在接口中ParameterNameDiscoverer
- 参数:
method
- the method to find parameter names for- 返回:
- an array of parameter names if the names can be resolved, or
null
if they cannot
getParameterNames
@Nullable public String[] getParameterNames(Constructor<?> ctor)
从接口复制的说明:ParameterNameDiscoverer
Return parameter names for a constructor, ornull
if they cannot be determined.Individual entries in the array may be
null
if parameter names are only available for some parameters of the given constructor but not for others. However, it is recommended to use stub parameter names instead wherever feasible.- 指定者:
getParameterNames
在接口中ParameterNameDiscoverer
- 参数:
ctor
- the constructor to find parameter names for- 返回:
- an array of parameter names if the names can be resolved, or
null
if they cannot