java.lang.Object
- org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodArgumentResolver
- - org.springframework.web.servlet.mvc.method.annotation.RequestPartMethodArgumentResolver

所有已实现的接口:
HandlerMethodArgumentResolver
```
public class RequestPartMethodArgumentResolver
extends AbstractMessageConverterMethodArgumentResolver
```
Resolves the following method arguments:
- Annotated with @RequestPart
- Of type MultipartFile in conjunction with Spring's MultipartResolver abstraction
- Of type javax.servlet.http.Part in conjunction with Servlet 3.0 multipart requests
When a parameter is annotated with @RequestPart, the content of the part is passed through an HttpMessageConverter to resolve the method argument with the 'Content-Type' of the request part in mind. This is analogous to what @RequestBody does to resolve an argument based on the content of a regular request.
When a parameter is not annotated or the name of the part is not specified, it is derived from the name of the method argument.
Automatic validation may be applied if the argument is annotated with @javax.validation.Valid. In case of validation failure, a MethodArgumentNotValidException is raised and a 400 response status code returned if DefaultHandlerExceptionResolver is configured.
从以下版本开始:
3.1
作者:
Rossen Stoyanchev, Brian Clozel, Juergen Hoeller

字段概要
- 从类继承的字段 org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodArgumentResolver
  allSupportedMediaTypes, logger, messageConverters

构造器概要

构造器
构造器	说明
`RequestPartMethodArgumentResolver(List<HttpMessageConverter<?>> messageConverters)`	Basic constructor with converters only.
`RequestPartMethodArgumentResolver(List<HttpMessageConverter<?>> messageConverters, List<Object> requestResponseBodyAdvice)`	Constructor with converters and `Request~` and `ResponseBodyAdvice`.

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
`Object`	`resolveArgument(MethodParameter parameter, ModelAndViewContainer mavContainer, NativeWebRequest request, WebDataBinderFactory binderFactory)`	Resolves a method parameter into an argument value from a given request.
`boolean`	`supportsParameter(MethodParameter parameter)`	Whether the given method parameter is a multi-part supported.

从类继承的方法 org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodArgumentResolver
adaptArgumentIfNecessary, createInputMessage, getAdvice, isBindExceptionRequired, readWithMessageConverters, readWithMessageConverters, validateIfApplicable

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
  - RequestPartMethodArgumentResolver
```
public RequestPartMethodArgumentResolver(List<HttpMessageConverter<?>> messageConverters)
```
    Basic constructor with converters only.
  - RequestPartMethodArgumentResolver
```
public RequestPartMethodArgumentResolver(List<HttpMessageConverter<?>> messageConverters,
                                         List<Object> requestResponseBodyAdvice)
```
    Constructor with converters and Request~ and ResponseBodyAdvice.
- 方法详细资料
  - supportsParameter
```
public boolean supportsParameter(MethodParameter parameter)
```
    Whether the given method parameter is a multi-part supported. Supports the following:
    annotated with @RequestPart
    of type MultipartFile unless annotated with @RequestParam
    of type javax.servlet.http.Part unless annotated with @RequestParam
    参数:
    parameter - the method parameter to check
    返回:
    true if this resolver supports the supplied parameter; false otherwise
  - resolveArgument
```
public Object resolveArgument(MethodParameter parameter,
                              ModelAndViewContainer mavContainer,
                              NativeWebRequest request,
                              WebDataBinderFactory binderFactory)
                       throws Exception
```
    从接口复制的说明: HandlerMethodArgumentResolver
    Resolves a method parameter into an argument value from a given request. A ModelAndViewContainer provides access to the model for the request. A WebDataBinderFactory provides a way to create a WebDataBinder instance when needed for data binding and type conversion purposes.
    参数:
    parameter - the method parameter to resolve. This parameter must have previously been passed to HandlerMethodArgumentResolver.supportsParameter(org.springframework.core.MethodParameter) which must have returned true.
    mavContainer - the ModelAndViewContainer for the current request
    request - the current request
    binderFactory - a factory for creating WebDataBinder instances
    返回:
    the resolved argument value, or null
    抛出:
    Exception - in case of errors with the preparation of argument values

类 RequestPartMethodArgumentResolver

字段概要

从类继承的字段 org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodArgumentResolver

构造器概要

方法概要

从类继承的方法 org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodArgumentResolver

从类继承的方法 java.lang.Object

构造器详细资料

RequestPartMethodArgumentResolver

RequestPartMethodArgumentResolver

方法详细资料

supportsParameter

resolveArgument