Package org.springframework.web.accept

Class MappingMediaTypeFileExtensionResolver

java.lang.Object

org.springframework.web.accept.MappingMediaTypeFileExtensionResolver

All Implemented Interfaces:

MediaTypeFileExtensionResolver

Direct Known Subclasses:

AbstractMappingContentNegotiationStrategy

public class MappingMediaTypeFileExtensionResolver
extends Object
implements MediaTypeFileExtensionResolver

An implementation of MediaTypeFileExtensionResolver that maintains lookups between file extensions and MediaTypes in both directions.

Initially created with a map of file extensions and media types. Subsequently subclasses can use addMapping(java.lang.String, org.springframework.http.MediaType) to add more mappings.

Since:

3.2

Author:

Rossen Stoyanchev, Juergen Hoeller

Constructor Summary

Constructors

Constructor	Description
MappingMediaTypeFileExtensionResolver(Map<String,MediaType> mediaTypes)	Create an instance with the given map of file extensions and media types.

Method Summary

Modifier and Type	Method	Description
protected void	addMapping(String extension, MediaType mediaType)	Map an extension to a MediaType.
List<String>	getAllFileExtensions()	Get all registered file extensions.
protected List<MediaType>	getAllMediaTypes()
Map<String,MediaType>	getMediaTypes()
protected MediaType	lookupMediaType(String extension)	Use this method for a reverse lookup from extension to MediaType.
List<String>	resolveFileExtensions(MediaType mediaType)	Resolve the given media type to a list of file extensions.

Methods inherited from class java.lang.Object

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

Constructor Details

MappingMediaTypeFileExtensionResolver

public MappingMediaTypeFileExtensionResolver(@Nullable
 Map<String,MediaType> mediaTypes)

Create an instance with the given map of file extensions and media types.

Method Details

getMediaTypes

public Map<String,MediaType> getMediaTypes()

getAllMediaTypes

protected List<MediaType> getAllMediaTypes()

addMapping

protected void addMapping(String extension,
 MediaType mediaType)

Map an extension to a MediaType. Ignore if extension already mapped.

resolveFileExtensions

public List<String> resolveFileExtensions(MediaType mediaType)

Description copied from interface: MediaTypeFileExtensionResolver

Resolve the given media type to a list of file extensions.

Specified by:

resolveFileExtensions in interface MediaTypeFileExtensionResolver

Parameters:

mediaType - the media type to resolve

Returns:

a list of extensions or an empty list (never null)

getAllFileExtensions

public List<String> getAllFileExtensions()

Description copied from interface: MediaTypeFileExtensionResolver

Get all registered file extensions.

Specified by:

getAllFileExtensions in interface MediaTypeFileExtensionResolver

Returns:

a list of extensions or an empty list (never null)

lookupMediaType

@Nullable
protected MediaType lookupMediaType(String extension)

Use this method for a reverse lookup from extension to MediaType.

Returns:

a MediaType for the extension, or null if none found