java.lang.Object
- org.springframework.util.MimeTypeUtils

```
public abstract class MimeTypeUtils
extends Object
```
Miscellaneous MimeType utility methods.
Since:
4.0
Author:
Arjen Poutsma, Rossen Stoyanchev, Dimitrios Liapis, Brian Clozel, Sam Brannen

Field Summary

Fields
Modifier and Type	Field	Description
`static MimeType`	`ALL`	Public constant mime type that includes all media ranges (i.e.
`static String`	`ALL_VALUE`	A String equivalent of `ALL`.
`static MimeType`	`APPLICATION_JSON`	Public constant mime type for `application/json`.
`static String`	`APPLICATION_JSON_VALUE`	A String equivalent of `APPLICATION_JSON`.
`static MimeType`	`APPLICATION_OCTET_STREAM`	Public constant mime type for `application/octet-stream`.
`static String`	`APPLICATION_OCTET_STREAM_VALUE`	A String equivalent of `APPLICATION_OCTET_STREAM`.
`static MimeType`	`APPLICATION_XML`	Public constant mime type for `application/xml`.
`static String`	`APPLICATION_XML_VALUE`	A String equivalent of `APPLICATION_XML`.
`static MimeType`	`IMAGE_GIF`	Public constant mime type for `image/gif`.
`static String`	`IMAGE_GIF_VALUE`	A String equivalent of `IMAGE_GIF`.
`static MimeType`	`IMAGE_JPEG`	Public constant mime type for `image/jpeg`.
`static String`	`IMAGE_JPEG_VALUE`	A String equivalent of `IMAGE_JPEG`.
`static MimeType`	`IMAGE_PNG`	Public constant mime type for `image/png`.
`static String`	`IMAGE_PNG_VALUE`	A String equivalent of `IMAGE_PNG`.
`static Comparator<MimeType>`	`SPECIFICITY_COMPARATOR`	Comparator used by `sortBySpecificity(List)`.
`static MimeType`	`TEXT_HTML`	Public constant mime type for `text/html`.
`static String`	`TEXT_HTML_VALUE`	A String equivalent of `TEXT_HTML`.
`static MimeType`	`TEXT_PLAIN`	Public constant mime type for `text/plain`.
`static String`	`TEXT_PLAIN_VALUE`	A String equivalent of `TEXT_PLAIN`.
`static MimeType`	`TEXT_XML`	Public constant mime type for `text/xml`.
`static String`	`TEXT_XML_VALUE`	A String equivalent of `TEXT_XML`.

Constructor Summary
Constructors
Constructor Description
MimeTypeUtils()

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static byte[]`	`generateMultipartBoundary()`	Generate a random MIME boundary as bytes, often used in multipart mime types.
`static String`	`generateMultipartBoundaryString()`	Generate a random MIME boundary as String, often used in multipart mime types.
`static MimeType`	`parseMimeType(String mimeType)`	Parse the given String into a single `MimeType`.
`static List<MimeType>`	`parseMimeTypes(String mimeTypes)`	Parse the comma-separated string into a list of `MimeType` objects.
`static void`	`sortBySpecificity(List<MimeType> mimeTypes)`	Sorts the given list of `MimeType` objects by specificity.
`static List<String>`	`tokenize(String mimeTypes)`	Tokenize the given comma-separated string of `MimeType` objects into a `List<String>`.
`static String`	`toString(Collection<? extends MimeType> mimeTypes)`	Return a string representation of the given list of `MimeType` objects.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - SPECIFICITY_COMPARATOR
```
public static final Comparator<MimeType> SPECIFICITY_COMPARATOR
```
    Comparator used by sortBySpecificity(List).
  - ALL
```
public static final MimeType ALL
```
    Public constant mime type that includes all media ranges (i.e. "*/*").
  - ALL_VALUE
```
public static final String ALL_VALUE
```
    A String equivalent of ALL.
    See Also:
    Constant Field Values
  - APPLICATION_JSON
```
public static final MimeType APPLICATION_JSON
```
    Public constant mime type for application/json.
  - APPLICATION_JSON_VALUE
```
public static final String APPLICATION_JSON_VALUE
```
    A String equivalent of APPLICATION_JSON.
    See Also:
    Constant Field Values
  - APPLICATION_OCTET_STREAM
```
public static final MimeType APPLICATION_OCTET_STREAM
```
    Public constant mime type for application/octet-stream.
  - APPLICATION_OCTET_STREAM_VALUE
```
public static final String APPLICATION_OCTET_STREAM_VALUE
```
    A String equivalent of APPLICATION_OCTET_STREAM.
    See Also:
    Constant Field Values
  - APPLICATION_XML
```
public static final MimeType APPLICATION_XML
```
    Public constant mime type for application/xml.
  - APPLICATION_XML_VALUE
```
public static final String APPLICATION_XML_VALUE
```
    A String equivalent of APPLICATION_XML.
    See Also:
    Constant Field Values
  - IMAGE_GIF
```
public static final MimeType IMAGE_GIF
```
    Public constant mime type for image/gif.
  - IMAGE_GIF_VALUE
```
public static final String IMAGE_GIF_VALUE
```
    A String equivalent of IMAGE_GIF.
    See Also:
    Constant Field Values
  - IMAGE_JPEG
```
public static final MimeType IMAGE_JPEG
```
    Public constant mime type for image/jpeg.
  - IMAGE_JPEG_VALUE
```
public static final String IMAGE_JPEG_VALUE
```
    A String equivalent of IMAGE_JPEG.
    See Also:
    Constant Field Values
  - IMAGE_PNG
```
public static final MimeType IMAGE_PNG
```
    Public constant mime type for image/png.
  - IMAGE_PNG_VALUE
```
public static final String IMAGE_PNG_VALUE
```
    A String equivalent of IMAGE_PNG.
    See Also:
    Constant Field Values
  - TEXT_HTML
```
public static final MimeType TEXT_HTML
```
    Public constant mime type for text/html.
  - TEXT_HTML_VALUE
```
public static final String TEXT_HTML_VALUE
```
    A String equivalent of TEXT_HTML.
    See Also:
    Constant Field Values
  - TEXT_PLAIN
```
public static final MimeType TEXT_PLAIN
```
    Public constant mime type for text/plain.
  - TEXT_PLAIN_VALUE
```
public static final String TEXT_PLAIN_VALUE
```
    A String equivalent of TEXT_PLAIN.
    See Also:
    Constant Field Values
  - TEXT_XML
```
public static final MimeType TEXT_XML
```
    Public constant mime type for text/xml.
  - TEXT_XML_VALUE
```
public static final String TEXT_XML_VALUE
```
    A String equivalent of TEXT_XML.
    See Also:
    Constant Field Values
- Constructor Detail
  - MimeTypeUtils
```
public MimeTypeUtils()
```
- Method Detail
  - parseMimeType
```
public static MimeType parseMimeType(String mimeType)
```
    Parse the given String into a single MimeType. Recently parsed MimeType are cached for further retrieval.
    Parameters:
    mimeType - the string to parse
    Returns:
    the mime type
    Throws:
    InvalidMimeTypeException - if the string cannot be parsed
  - parseMimeTypes
```
public static List<MimeType> parseMimeTypes(String mimeTypes)
```
    Parse the comma-separated string into a list of MimeType objects.
    Parameters:
    mimeTypes - the string to parse
    Returns:
    the list of mime types
    Throws:
    InvalidMimeTypeException - if the string cannot be parsed
  - tokenize
```
public static List<String> tokenize(String mimeTypes)
```
    Tokenize the given comma-separated string of MimeType objects into a List<String>. Unlike simple tokenization by ",", this method takes into account quoted parameters.
    Parameters:
    mimeTypes - the string to tokenize
    Returns:
    the list of tokens
    Since:
    5.1.3
  - toString
```
public static String toString(Collection<? extends MimeType> mimeTypes)
```
    Return a string representation of the given list of MimeType objects.
    Parameters:
    mimeTypes - the string to parse
    Returns:
    the list of mime types
    Throws:
    IllegalArgumentException - if the String cannot be parsed
  - sortBySpecificity
```
public static void sortBySpecificity(List<MimeType> mimeTypes)
```
    Sorts the given list of MimeType objects by specificity.
    Given two mime types:
    if either mime type has a wildcard type, then the mime type without the wildcard is ordered before the other.
    if the two mime types have different types, then they are considered equal and remain their current order.
    if either mime type has a wildcard subtype , then the mime type without the wildcard is sorted before the other.
    if the two mime types have different subtypes, then they are considered equal and remain their current order.
    if the two mime types have a different amount of parameters, then the mime type with the most parameters is ordered before the other.
    For example:
    audio/basic < audio/* < */*
    audio/basic;level=1 < audio/basic
    audio/basic == text/html
    audio/basic == audio/wave
    Parameters:
    mimeTypes - the list of mime types to be sorted
    See Also:
    HTTP 1.1: Semantics and Content, section 5.3.2
  - generateMultipartBoundary
```
public static byte[] generateMultipartBoundary()
```
    Generate a random MIME boundary as bytes, often used in multipart mime types.
  - generateMultipartBoundaryString
```
public static String generateMultipartBoundaryString()
```
    Generate a random MIME boundary as String, often used in multipart mime types.

Class MimeTypeUtils

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

SPECIFICITY_COMPARATOR

ALL

ALL_VALUE

APPLICATION_JSON

APPLICATION_JSON_VALUE

APPLICATION_OCTET_STREAM

APPLICATION_OCTET_STREAM_VALUE

APPLICATION_XML

APPLICATION_XML_VALUE

IMAGE_GIF

IMAGE_GIF_VALUE

IMAGE_JPEG

IMAGE_JPEG_VALUE

IMAGE_PNG

IMAGE_PNG_VALUE

TEXT_HTML

TEXT_HTML_VALUE

TEXT_PLAIN

TEXT_PLAIN_VALUE

TEXT_XML

TEXT_XML_VALUE

Constructor Detail

MimeTypeUtils

Method Detail

parseMimeType

parseMimeTypes

tokenize

toString

sortBySpecificity

generateMultipartBoundary

generateMultipartBoundaryString