```
public interface HttpHeaders
```
An injectable interface that provides access to HTTP header information. All methods throw java.lang.IllegalStateException if called outside the scope of a request (e.g. from a provider constructor).

See Also:

Context

Field Summary

Fields
Modifier and Type	Field	Description
`static java.lang.String`	`ACCEPT`	See {@link HTTP/1.1 documentation}.
`static java.lang.String`	`ACCEPT_CHARSET`	See {@link HTTP/1.1 documentation}.
`static java.lang.String`	`ACCEPT_ENCODING`	See {@link HTTP/1.1 documentation}.
`static java.lang.String`	`ACCEPT_LANGUAGE`	See {@link HTTP/1.1 documentation}.
`static java.lang.String`	`AUTHORIZATION`	See {@link HTTP/1.1 documentation}.
`static java.lang.String`	`CACHE_CONTROL`	See {@link HTTP/1.1 documentation}.
`static java.lang.String`	`CONTENT_ENCODING`	See {@link HTTP/1.1 documentation}.
`static java.lang.String`	`CONTENT_LANGUAGE`	See {@link HTTP/1.1 documentation}.
`static java.lang.String`	`CONTENT_LENGTH`	See {@link HTTP/1.1 documentation}.
`static java.lang.String`	`CONTENT_LOCATION`	See {@link HTTP/1.1 documentation}.
`static java.lang.String`	`CONTENT_TYPE`	See {@link HTTP/1.1 documentation}.
`static java.lang.String`	`COOKIE`	See {@link IETF RFC 2109}.
`static java.lang.String`	`DATE`	See {@link HTTP/1.1 documentation}.
`static java.lang.String`	`ETAG`	See {@link HTTP/1.1 documentation}.
`static java.lang.String`	`EXPIRES`	See {@link HTTP/1.1 documentation}.
`static java.lang.String`	`HOST`	See {@link HTTP/1.1 documentation}.
`static java.lang.String`	`IF_MATCH`	See {@link HTTP/1.1 documentation}.
`static java.lang.String`	`IF_MODIFIED_SINCE`	See {@link HTTP/1.1 documentation}.
`static java.lang.String`	`IF_NONE_MATCH`	See {@link HTTP/1.1 documentation}.
`static java.lang.String`	`IF_UNMODIFIED_SINCE`	See {@link HTTP/1.1 documentation}.
`static java.lang.String`	`LAST_MODIFIED`	See {@link HTTP/1.1 documentation}.
`static java.lang.String`	`LOCATION`	See {@link HTTP/1.1 documentation}.
`static java.lang.String`	`SET_COOKIE`	See {@link IETF RFC 2109}.
`static java.lang.String`	`USER_AGENT`	See {@link HTTP/1.1 documentation}.
`static java.lang.String`	`VARY`	See {@link HTTP/1.1 documentation}.
`static java.lang.String`	`WWW_AUTHENTICATE`	See {@link HTTP/1.1 documentation}.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`java.util.List<java.util.Locale>`	`getAcceptableLanguages()`	Get a list of languages that are acceptable for the response.
`java.util.List<MediaType>`	`getAcceptableMediaTypes()`	Get a list of media types that are acceptable for the response.
`java.util.Map<java.lang.String,Cookie>`	`getCookies()`	Get any cookies that accompanied the request.
`java.util.Locale`	`getLanguage()`	Get the language of the request entity
`MediaType`	`getMediaType()`	Get the media type of the request entity
`java.util.List<java.lang.String>`	`getRequestHeader(java.lang.String name)`	Get the values of a HTTP request header.
`MultivaluedMap<java.lang.String,java.lang.String>`	`getRequestHeaders()`	Get the values of HTTP request headers.

- Field Detail
  - ACCEPT
```
static final java.lang.String ACCEPT
```
    See {@link HTTP/1.1 documentation}.
    
    See Also:
    
    Constant Field Values
  - ACCEPT_CHARSET
```
static final java.lang.String ACCEPT_CHARSET
```
    See {@link HTTP/1.1 documentation}.
    
    See Also:
    
    Constant Field Values
  - ACCEPT_ENCODING
```
static final java.lang.String ACCEPT_ENCODING
```
    See {@link HTTP/1.1 documentation}.
    
    See Also:
    
    Constant Field Values
  - ACCEPT_LANGUAGE
```
static final java.lang.String ACCEPT_LANGUAGE
```
    See {@link HTTP/1.1 documentation}.
    
    See Also:
    
    Constant Field Values
  - AUTHORIZATION
```
static final java.lang.String AUTHORIZATION
```
    See {@link HTTP/1.1 documentation}.
    
    See Also:
    
    Constant Field Values
  - CACHE_CONTROL
```
static final java.lang.String CACHE_CONTROL
```
    See {@link HTTP/1.1 documentation}.
    
    See Also:
    
    Constant Field Values
  - CONTENT_ENCODING
```
static final java.lang.String CONTENT_ENCODING
```
    See {@link HTTP/1.1 documentation}.
    
    See Also:
    
    Constant Field Values
  - CONTENT_LANGUAGE
```
static final java.lang.String CONTENT_LANGUAGE
```
    See {@link HTTP/1.1 documentation}.
    
    See Also:
    
    Constant Field Values
  - CONTENT_LENGTH
```
static final java.lang.String CONTENT_LENGTH
```
    See {@link HTTP/1.1 documentation}.
    
    See Also:
    
    Constant Field Values
  - CONTENT_LOCATION
```
static final java.lang.String CONTENT_LOCATION
```
    See {@link HTTP/1.1 documentation}.
    
    See Also:
    
    Constant Field Values
  - CONTENT_TYPE
```
static final java.lang.String CONTENT_TYPE
```
    See {@link HTTP/1.1 documentation}.
    
    See Also:
    
    Constant Field Values
  - DATE
```
static final java.lang.String DATE
```
    See {@link HTTP/1.1 documentation}.
    
    See Also:
    
    Constant Field Values
  - ETAG
```
static final java.lang.String ETAG
```
    See {@link HTTP/1.1 documentation}.
    
    See Also:
    
    Constant Field Values
  - EXPIRES
```
static final java.lang.String EXPIRES
```
    See {@link HTTP/1.1 documentation}.
    
    See Also:
    
    Constant Field Values
  - HOST
```
static final java.lang.String HOST
```
    See {@link HTTP/1.1 documentation}.
    
    See Also:
    
    Constant Field Values
  - IF_MATCH
```
static final java.lang.String IF_MATCH
```
    See {@link HTTP/1.1 documentation}.
    
    See Also:
    
    Constant Field Values
  - IF_MODIFIED_SINCE
```
static final java.lang.String IF_MODIFIED_SINCE
```
    See {@link HTTP/1.1 documentation}.
    
    See Also:
    
    Constant Field Values
  - IF_NONE_MATCH
```
static final java.lang.String IF_NONE_MATCH
```
    See {@link HTTP/1.1 documentation}.
    
    See Also:
    
    Constant Field Values
  - IF_UNMODIFIED_SINCE
```
static final java.lang.String IF_UNMODIFIED_SINCE
```
    See {@link HTTP/1.1 documentation}.
    
    See Also:
    
    Constant Field Values
  - LAST_MODIFIED
```
static final java.lang.String LAST_MODIFIED
```
    See {@link HTTP/1.1 documentation}.
    
    See Also:
    
    Constant Field Values
  - LOCATION
```
static final java.lang.String LOCATION
```
    See {@link HTTP/1.1 documentation}.
    
    See Also:
    
    Constant Field Values
  - USER_AGENT
```
static final java.lang.String USER_AGENT
```
    See {@link HTTP/1.1 documentation}.
    
    See Also:
    
    Constant Field Values
  - VARY
```
static final java.lang.String VARY
```
    See {@link HTTP/1.1 documentation}.
    
    See Also:
    
    Constant Field Values
  - WWW_AUTHENTICATE
```
static final java.lang.String WWW_AUTHENTICATE
```
    See {@link HTTP/1.1 documentation}.
    
    See Also:
    
    Constant Field Values
  - COOKIE
```
static final java.lang.String COOKIE
```
    See {@link IETF RFC 2109}.
    
    See Also:
    
    Constant Field Values
  - SET_COOKIE
```
static final java.lang.String SET_COOKIE
```
    See {@link IETF RFC 2109}.
    
    See Also:
    
    Constant Field Values
- Method Detail
  - getRequestHeader
```
java.util.List<java.lang.String> getRequestHeader(java.lang.String name)
```
    Get the values of a HTTP request header. The returned List is read-only. This is a shortcut for getRequestHeaders().get(name).
    
    Parameters:
    
    name - the header name, case insensitive
    
    Returns:
    
    a read-only list of header values.
    
    Throws:
    
    java.lang.IllegalStateException - if called outside the scope of a request
  - getRequestHeaders
```
MultivaluedMap<java.lang.String,java.lang.String> getRequestHeaders()
```
    Get the values of HTTP request headers. The returned Map is case-insensitive wrt keys and is read-only.
    
    Returns:
    
    a read-only map of header names and values.
    
    Throws:
    
    java.lang.IllegalStateException - if called outside the scope of a request
  - getAcceptableMediaTypes
```
java.util.List<MediaType> getAcceptableMediaTypes()
```
    Get a list of media types that are acceptable for the response.
    
    Returns:
    
    a read-only list of requested response media types sorted according to their q-value, with highest preference first.
    
    Throws:
    
    java.lang.IllegalStateException - if called outside the scope of a request
  - getAcceptableLanguages
```
java.util.List<java.util.Locale> getAcceptableLanguages()
```
    Get a list of languages that are acceptable for the response.
    
    Returns:
    
    a read-only list of acceptable languages sorted according to their q-value, with highest preference first.
    
    Throws:
    
    java.lang.IllegalStateException - if called outside the scope of a request
  - getMediaType
```
MediaType getMediaType()
```
    Get the media type of the request entity
    
    Returns:
    
    the media type or null if there is no request entity.
    
    Throws:
    
    java.lang.IllegalStateException - if called outside the scope of a request
  - getLanguage
```
java.util.Locale getLanguage()
```
    Get the language of the request entity
    
    Returns:
    
    the language of the entity or null if not specified
    
    Throws:
    
    java.lang.IllegalStateException - if called outside the scope of a request
  - getCookies
```
java.util.Map<java.lang.String,Cookie> getCookies()
```
    Get any cookies that accompanied the request.
    
    Returns:
    
    a read-only map of cookie name (String) to Cookie.
    
    Throws:
    
    java.lang.IllegalStateException - if called outside the scope of a request

Interface HttpHeaders

Field Summary

Method Summary

Field Detail

ACCEPT

ACCEPT_CHARSET

ACCEPT_ENCODING

ACCEPT_LANGUAGE

AUTHORIZATION

CACHE_CONTROL

CONTENT_ENCODING

CONTENT_LANGUAGE

CONTENT_LENGTH

CONTENT_LOCATION

CONTENT_TYPE

DATE

ETAG

EXPIRES

HOST

IF_MATCH

IF_MODIFIED_SINCE

IF_NONE_MATCH

IF_UNMODIFIED_SINCE

LAST_MODIFIED

LOCATION

USER_AGENT

VARY

WWW_AUTHENTICATE

COOKIE

SET_COOKIE

Method Detail

getRequestHeader

getRequestHeaders

getAcceptableMediaTypes

getAcceptableLanguages

getMediaType

getLanguage

getCookies