org.springframework.web.servlet.mvc.method.annotation

Class RequestPartMethodArgumentResolver

java.lang.Object

org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodArgumentResolver

org.springframework.web.servlet.mvc.method.annotation.RequestPartMethodArgumentResolver

All Implemented Interfaces:

org.springframework.web.method.support.HandlerMethodArgumentResolver

public class RequestPartMethodArgumentResolver
extends AbstractMessageConverterMethodArgumentResolver

Resolves the following method arguments:

• Annotated with @RequestPart
• Of type <code>MultipartFile</code> in conjunction with Spring's <code>MultipartResolver</code> 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 <code>HttpMessageConverter</code> to resolve the method argument with the 'Content-Type' of the request part in mind. This is analogous to what @<code>RequestBody</code> 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 <code>MethodArgumentNotValidException</code> is raised and a 400 response status code returned if DefaultHandlerExceptionResolver is configured.

Since:

3.1

Author:

Rossen Stoyanchev

Field Summary

Fields inherited from class org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodArgumentResolver

allSupportedMediaTypes, logger, messageConverters

Constructor Summary

Constructors

Constructor and Description
RequestPartMethodArgumentResolver(List<org.springframework.http.converter.HttpMessageConverter<?>> messageConverters)

Method Summary

Modifier and Type	Method and Description
Object	resolveArgument(org.springframework.core.MethodParameter parameter, org.springframework.web.method.support.ModelAndViewContainer mavContainer, org.springframework.web.context.request.NativeWebRequest request, org.springframework.web.bind.support.WebDataBinderFactory binderFactory)
boolean	supportsParameter(org.springframework.core.MethodParameter parameter) Supports the following: Annotated with @RequestPart Of type <code>MultipartFile</code> unless annotated with @RequestParam.

Methods inherited from class org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodArgumentResolver

createInputMessage, readWithMessageConverters, readWithMessageConverters

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

RequestPartMethodArgumentResolver

public RequestPartMethodArgumentResolver(List<org.springframework.http.converter.HttpMessageConverter<?>> messageConverters)

Method Detail

supportsParameter

public boolean supportsParameter(org.springframework.core.MethodParameter parameter)

Supports the following:

• Annotated with @RequestPart
• Of type <code>MultipartFile</code> unless annotated with @RequestParam.
• Of type javax.servlet.http.Part unless annotated with @RequestParam.

resolveArgument

public Object resolveArgument(org.springframework.core.MethodParameter parameter,
                              org.springframework.web.method.support.ModelAndViewContainer mavContainer,
                              org.springframework.web.context.request.NativeWebRequest request,
                              org.springframework.web.bind.support.WebDataBinderFactory binderFactory)
                       throws Exception

Throws:

Exception