程序包 cn.taketoday.web.bind.resolver

类 RequestPartMethodArgumentResolver

java.lang.Object

cn.taketoday.web.bind.resolver.AbstractMessageConverterMethodArgumentResolver

cn.taketoday.web.bind.resolver.RequestPartMethodArgumentResolver

所有已实现的接口:

ParameterResolvingStrategy

public class RequestPartMethodArgumentResolver
extends AbstractMessageConverterMethodArgumentResolver

Resolves the following method arguments:

• Annotated with @RequestPart
• Of type MultipartFile
• Of type jakarta.servlet.http.Part in conjunction with Servlet 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 with @RequestPart or the name of the part is not specified, the request part's name is derived from the name of the method argument.

Automatic validation may be applied if the argument is annotated with any annotations that trigger validation. In case of validation failure, a MethodArgumentNotValidException is raised and a 400 response status code returned if the SimpleHandlerExceptionHandler is configured.

从以下版本开始:

4.0 2022/4/28 15:32

作者:

Rossen Stoyanchev, Brian Clozel, Juergen Hoeller, Harry Yang

字段概要

从类继承的字段 cn.taketoday.web.bind.resolver.AbstractMessageConverterMethodArgumentResolver

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 RequestBodyAdvice and ResponseBodyAdvice.

方法概要

修饰符和类型	方法	说明
(专用程序包) void	closeStreamIfNecessary(InputStream body)	Allow for closing the body stream if necessary, e.g. for part streams in a multipart request.
private String	getPartName(cn.taketoday.core.MethodParameter methodParam, RequestPart requestPart)
Object	resolveArgument(RequestContext context, ResolvableMethodParameter resolvable)	Resolve parameter
boolean	supportsParameter(ResolvableMethodParameter parameter)	Whether the given method parameter is supported as multi-part.

从类继承的方法 cn.taketoday.web.bind.resolver.AbstractMessageConverterMethodArgumentResolver

adaptArgumentIfNecessary, getAdvice, getSupportedMediaTypes, isBindExceptionRequired, readWithMessageConverters, readWithMessageConverters, validateIfApplicable, 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 RequestBodyAdvice and ResponseBodyAdvice.

方法详细资料

supportsParameter

public boolean supportsParameter(ResolvableMethodParameter parameter)

Whether the given method parameter is supported as multi-part. Supports the following method parameters:

• annotated with @RequestPart
• of type MultipartFile unless annotated with @RequestParam
• of type jakarta.servlet.http.Part unless annotated with @RequestParam

resolveArgument

@Nullable
public Object resolveArgument(RequestContext context,
 ResolvableMethodParameter resolvable)
                       throws Throwable

从接口复制的说明: ParameterResolvingStrategy

Resolve parameter

参数:

context - Current request context

resolvable - resolvable parameter

返回:

method parameter instance

抛出:

Throwable - if any Exception occurred

另请参阅:

• MethodParameterResolvingException

getPartName

private String getPartName(cn.taketoday.core.MethodParameter methodParam,
 @Nullable
 RequestPart requestPart)

closeStreamIfNecessary

void closeStreamIfNecessary(InputStream body)

从类复制的说明: AbstractMessageConverterMethodArgumentResolver

Allow for closing the body stream if necessary, e.g. for part streams in a multipart request.

覆盖:

closeStreamIfNecessary 在类中 AbstractMessageConverterMethodArgumentResolver