类 HandlerMethodArgumentResolverComposite
- java.lang.Object
- org.springframework.web.method.support.HandlerMethodArgumentResolverComposite
- 所有已实现的接口:
HandlerMethodArgumentResolver
public class HandlerMethodArgumentResolverComposite extends Object implements HandlerMethodArgumentResolver
Resolves method parameters by delegating to a list of registeredHandlerMethodArgumentResolvers
. Previously resolved method parameters are cached for faster lookups.- 从以下版本开始:
- 3.1
- 作者:
- Rossen Stoyanchev, Juergen Hoeller
构造器概要
构造器 构造器 说明 HandlerMethodArgumentResolverComposite()
方法概要
构造器详细资料
HandlerMethodArgumentResolverComposite
public HandlerMethodArgumentResolverComposite()
方法详细资料
addResolver
public HandlerMethodArgumentResolverComposite addResolver(HandlerMethodArgumentResolver resolver)
Add the givenHandlerMethodArgumentResolver
.
addResolvers
public HandlerMethodArgumentResolverComposite addResolvers(@Nullable HandlerMethodArgumentResolver... resolvers)
Add the givenHandlerMethodArgumentResolvers
.- 从以下版本开始:
- 4.3
addResolvers
public HandlerMethodArgumentResolverComposite addResolvers(@Nullable List<? extends HandlerMethodArgumentResolver> resolvers)
Add the givenHandlerMethodArgumentResolvers
.
getResolvers
public List<HandlerMethodArgumentResolver> getResolvers()
Return a read-only list with the contained resolvers, or an empty list.
clear
public void clear()
Clear the list of configured resolvers.- 从以下版本开始:
- 4.3
supportsParameter
public boolean supportsParameter(MethodParameter parameter)
Whether the given method parameter is supported by any registeredHandlerMethodArgumentResolver
.- 指定者:
supportsParameter
在接口中HandlerMethodArgumentResolver
- 参数:
parameter
- the method parameter to check- 返回:
true
if this resolver supports the supplied parameter;false
otherwise
resolveArgument
@Nullable public Object resolveArgument(MethodParameter parameter, @Nullable ModelAndViewContainer mavContainer, NativeWebRequest webRequest, @Nullable WebDataBinderFactory binderFactory) throws Exception
Iterate over registeredHandlerMethodArgumentResolvers
and invoke the one that supports it.- 指定者:
resolveArgument
在接口中HandlerMethodArgumentResolver
- 参数:
parameter
- the method parameter to resolve. This parameter must have previously been passed toHandlerMethodArgumentResolver.supportsParameter(org.springframework.core.MethodParameter)
which must have returnedtrue
.mavContainer
- the ModelAndViewContainer for the current requestwebRequest
- the current requestbinderFactory
- a factory for creatingWebDataBinder
instances- 返回:
- the resolved argument value, or
null
if not resolvable - 抛出:
IllegalArgumentException
- if no suitable argument resolver is foundException
- in case of errors with the preparation of argument values