java.lang.Object
- org.springframework.web.reactive.result.method.HandlerMethodArgumentResolverSupport
- - org.springframework.web.reactive.result.method.annotation.AbstractNamedValueArgumentResolver
  - - org.springframework.web.reactive.result.method.annotation.AbstractNamedValueSyncArgumentResolver
    - - org.springframework.web.reactive.result.method.annotation.RequestParamMethodArgumentResolver

所有已实现的接口:
HandlerMethodArgumentResolver, SyncHandlerMethodArgumentResolver
```
public class RequestParamMethodArgumentResolver
extends AbstractNamedValueSyncArgumentResolver
```
Resolver for method arguments annotated with @RequestParam from URI query string parameters.
This resolver can also be created in default resolution mode in which simple types (int, long, etc.) not annotated with @RequestParam are also treated as request parameters with the parameter name derived from the argument name.
If the method parameter type is Map, the name specified in the annotation is used to resolve the request parameter String value. The value is then converted to a Map via type conversion assuming a suitable Converter has been registered. Or if a request parameter name is not specified the RequestParamMapMethodArgumentResolver is used instead to provide access to all request parameters in the form of a map.
从以下版本开始:
5.0
作者:
Rossen Stoyanchev
另请参阅:
RequestParamMapMethodArgumentResolver

嵌套类概要
- 从类继承的嵌套类/接口 org.springframework.web.reactive.result.method.annotation.AbstractNamedValueArgumentResolver
  AbstractNamedValueArgumentResolver.NamedValueInfo

字段概要
- 从类继承的字段 org.springframework.web.reactive.result.method.HandlerMethodArgumentResolverSupport
  logger

构造器概要

构造器
构造器	说明
`RequestParamMethodArgumentResolver(ConfigurableBeanFactory factory, ReactiveAdapterRegistry registry, boolean useDefaultResolution)`	Class constructor with a default resolution mode flag.

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
`protected AbstractNamedValueArgumentResolver.NamedValueInfo`	`createNamedValueInfo(MethodParameter parameter)`	Create the `AbstractNamedValueArgumentResolver.NamedValueInfo` object for the given method parameter.
`protected void`	`handleMissingValue(String name, MethodParameter parameter, ServerWebExchange exchange)`	Invoked when a named value is required, but `AbstractNamedValueArgumentResolver.resolveName(String, MethodParameter, ServerWebExchange)` returned `null` and there is no default value.
`protected Object`	`resolveNamedValue(String name, MethodParameter parameter, ServerWebExchange exchange)`	Actually resolve the value synchronously.
`boolean`	`supportsParameter(MethodParameter param)`	Whether this resolver supports the given method parameter.

从类继承的方法 org.springframework.web.reactive.result.method.annotation.AbstractNamedValueSyncArgumentResolver
resolveArgument, resolveArgumentValue, resolveName

从类继承的方法 org.springframework.web.reactive.result.method.annotation.AbstractNamedValueArgumentResolver
handleMissingValue, handleResolvedValue

从类继承的方法 org.springframework.web.reactive.result.method.HandlerMethodArgumentResolverSupport
checkAnnotatedParamNoReactiveWrapper, checkParameterType, checkParameterTypeNoReactiveWrapper, getAdapterRegistry

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
  - RequestParamMethodArgumentResolver
```
public RequestParamMethodArgumentResolver(@Nullable
                                          ConfigurableBeanFactory factory,
                                          ReactiveAdapterRegistry registry,
                                          boolean useDefaultResolution)
```
    Class constructor with a default resolution mode flag.
    参数:
    factory - a bean factory used for resolving ${...} placeholder and #{...} SpEL expressions in default values, or null if default values are not expected to contain expressions
    registry - for checking reactive type wrappers
    useDefaultResolution - in default resolution mode a method argument that is a simple type, as defined in BeanUtils.isSimpleProperty(java.lang.Class<?>), is treated as a request parameter even if it isn't annotated, the request parameter name is derived from the method parameter name.
- 方法详细资料
  - supportsParameter
```
public boolean supportsParameter(MethodParameter param)
```
    从接口复制的说明: HandlerMethodArgumentResolver
    Whether this resolver supports the given method parameter.
    参数:
    param - the method parameter
  - createNamedValueInfo
```
protected AbstractNamedValueArgumentResolver.NamedValueInfo createNamedValueInfo(MethodParameter parameter)
```
    从类复制的说明: AbstractNamedValueArgumentResolver
    Create the AbstractNamedValueArgumentResolver.NamedValueInfo object for the given method parameter. Implementations typically retrieve the method annotation by means of MethodParameter.getParameterAnnotation(Class).
    指定者:
    createNamedValueInfo 在类中 AbstractNamedValueArgumentResolver
    参数:
    parameter - the method parameter
    返回:
    the named value information
  - resolveNamedValue
```
protected Object resolveNamedValue(String name,
                                   MethodParameter parameter,
                                   ServerWebExchange exchange)
```
    从类复制的说明: AbstractNamedValueSyncArgumentResolver
    Actually resolve the value synchronously.
    指定者:
    resolveNamedValue 在类中 AbstractNamedValueSyncArgumentResolver
  - handleMissingValue
```
protected void handleMissingValue(String name,
                                  MethodParameter parameter,
                                  ServerWebExchange exchange)
```
    从类复制的说明: AbstractNamedValueArgumentResolver
    Invoked when a named value is required, but AbstractNamedValueArgumentResolver.resolveName(String, MethodParameter, ServerWebExchange) returned null and there is no default value. Subclasses typically throw an exception in this case.
    覆盖:
    handleMissingValue 在类中 AbstractNamedValueArgumentResolver
    参数:
    name - the name for the value
    parameter - the method parameter
    exchange - the current exchange

类 RequestParamMethodArgumentResolver

嵌套类概要

从类继承的嵌套类/接口 org.springframework.web.reactive.result.method.annotation.AbstractNamedValueArgumentResolver

字段概要

从类继承的字段 org.springframework.web.reactive.result.method.HandlerMethodArgumentResolverSupport

构造器概要

方法概要

从类继承的方法 org.springframework.web.reactive.result.method.annotation.AbstractNamedValueSyncArgumentResolver

从类继承的方法 org.springframework.web.reactive.result.method.annotation.AbstractNamedValueArgumentResolver

从类继承的方法 org.springframework.web.reactive.result.method.HandlerMethodArgumentResolverSupport

从类继承的方法 java.lang.Object

构造器详细资料

RequestParamMethodArgumentResolver

方法详细资料

supportsParameter

createNamedValueInfo

resolveNamedValue

handleMissingValue