org.springframework.http

Class MediaTypeFactory

java.lang.Object

org.springframework.http.MediaTypeFactory

public class MediaTypeFactory
extends java.lang.Object

A factory delegate for resolving MediaType objects from Resource handles or filenames.

Since:

5.0

Author:

Juergen Hoeller, Arjen Poutsma

Field Summary

Fields

Modifier and Type	Field and Description
private static MultiValueMap<java.lang.String,MediaType>	fileExtensionToMediaTypes
private static java.lang.String	MIME_TYPES_FILE_NAME

Constructor Summary

Constructors

Constructor and Description
MediaTypeFactory()

Method Summary

Modifier and Type	Method and Description
static java.util.Optional<MediaType>	getMediaType(Resource resource) Determine a media type for the given resource, if possible.
static java.util.Optional<MediaType>	getMediaType(java.lang.String filename) Determine a media type for the given file name, if possible.
static java.util.List<MediaType>	getMediaTypes(java.lang.String filename) Determine the media types for the given file name, if possible.
private static MultiValueMap<java.lang.String,MediaType>	parseMimeTypes() Parse the mime.types file found in the resources.

Methods inherited from class java.lang.Object

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

Field Detail

MIME_TYPES_FILE_NAME

private static final java.lang.String MIME_TYPES_FILE_NAME

See Also:

Constant Field Values

fileExtensionToMediaTypes

private static final MultiValueMap<java.lang.String,MediaType> fileExtensionToMediaTypes

Constructor Detail

MediaTypeFactory

public MediaTypeFactory()

Method Detail

parseMimeTypes

private static MultiValueMap<java.lang.String,MediaType> parseMimeTypes()

Parse the mime.types file found in the resources. Format is: # comments begin with a '#'
# the format is <mime type> <space separated file extensions>
# for example:
text/plain txt text
# this would map file.txt and file.text to
# the mime type "text/plain"


Returns:

a multi-value map, mapping media types to file extensions.

getMediaType

public static java.util.Optional<MediaType> getMediaType(@Nullable
                                                         Resource resource)

Determine a media type for the given resource, if possible.

Parameters:

resource - the resource to introspect

Returns:

the corresponding media type, or null if none found

getMediaType

public static java.util.Optional<MediaType> getMediaType(@Nullable
                                                         java.lang.String filename)

Determine a media type for the given file name, if possible.

Parameters:

filename - the file name plus extension

Returns:

the corresponding media type, or null if none found

getMediaTypes

public static java.util.List<MediaType> getMediaTypes(@Nullable
                                                      java.lang.String filename)

Determine the media types for the given file name, if possible.

Parameters:

filename - the file name plus extension

Returns:

the corresponding media types, or an empty list if none found