HttpHeaders (Spring Framework 4.1.0.RELEASE API)

java.lang.Object
- org.springframework.http.HttpHeaders

All Implemented Interfaces:

Serializable, Map<String,List<String>>, MultiValueMap<String,String>

Direct Known Subclasses:

WebSocketHttpHeaders
```
public class HttpHeaders
extends Object
implements MultiValueMap<String,String>, Serializable
```
Represents HTTP request and response headers, mapping string header names to list of string values.
In addition to the normal methods defined by Map, this class offers the following convenience methods:
- getFirst(String) returns the first value associated with a given header name
- add(String, String) adds a header value to the list of values for a header name
- set(String, String) sets the header value to a single string value
Inspired by Headers.
Since:

3.0

Author:

Arjen Poutsma, Sebastien Deleuze

See Also:

Serialized Form

Nested Class Summary
- Nested classes/interfaces inherited from interface java.util.Map
  Map.Entry<K,V>

Field Summary

Fields
Modifier and Type	Field and Description
`static String`	`ACCEPT` The HTTP `Accept` header field name.
`static String`	`ACCEPT_CHARSET` The HTTP `Accept-Charset` header field name.
`static String`	`ACCEPT_ENCODING` The HTTP `Accept-Encoding` header field name.
`static String`	`ACCEPT_LANGUAGE` The HTTP `Accept-Language` header field name.
`static String`	`ACCEPT_RANGES` The HTTP `Accept-Ranges` header field name.
`static String`	`AGE` The HTTP `Age` header field name.
`static String`	`ALLOW` The HTTP `Allow` header field name.
`static String`	`AUTHORIZATION` The HTTP `Authorization` header field name.
`static String`	`CACHE_CONTROL` The HTTP `Cache-Control` header field name.
`static String`	`CONNECTION` The HTTP `Connection` header field name.
`static String`	`CONTENT_DISPOSITION` The HTTP `Content-Disposition` header field name
`static String`	`CONTENT_ENCODING` The HTTP `Content-Encoding` header field name.
`static String`	`CONTENT_LANGUAGE` The HTTP `Content-Language` header field name.
`static String`	`CONTENT_LENGTH` The HTTP `Content-Length` header field name.
`static String`	`CONTENT_LOCATION` The HTTP `Content-Location` header field name.
`static String`	`CONTENT_RANGE` The HTTP `Content-Range` header field name.
`static String`	`CONTENT_TYPE` The HTTP `Content-Type` header field name.
`static String`	`COOKIE` The HTTP `Cookie` header field name.
`static String`	`DATE` The HTTP `Date` header field name.
`static String`	`ETAG` The HTTP `ETag` header field name.
`static String`	`EXPECT` The HTTP `Expect` header field name.
`static String`	`EXPIRES` The HTTP `Expires` header field name.
`static String`	`FROM` The HTTP `From` header field name.
`static String`	`HOST` The HTTP `Host` header field name.
`static String`	`IF_MATCH` The HTTP `If-Match` header field name.
`static String`	`IF_MODIFIED_SINCE` The HTTP `If-Modified-Since` header field name.
`static String`	`IF_NONE_MATCH` The HTTP `If-None-Match` header field name.
`static String`	`IF_RANGE` The HTTP `If-Range` header field name.
`static String`	`IF_UNMODIFIED_SINCE` The HTTP `If-Unmodified-Since` header field name.
`static String`	`LAST_MODIFIED` The HTTP `Last-Modified` header field name.
`static String`	`LINK` The HTTP `Link` header field name.
`static String`	`LOCATION` The HTTP `Location` header field name.
`static String`	`MAX_FORWARDS` The HTTP `Max-Forwards` header field name.
`static String`	`ORIGIN` The HTTP `Origin` header field name.
`static String`	`PRAGMA` The HTTP `Pragma` header field name.
`static String`	`PROXY_AUTHENTICATE` The HTTP `Proxy-Authenticate` header field name.
`static String`	`PROXY_AUTHORIZATION` The HTTP `Proxy-Authorization` header field name.
`static String`	`RANGE` The HTTP `Range` header field name.
`static String`	`REFERER` The HTTP `Referer` header field name.
`static String`	`RETRY_AFTER` The HTTP `Retry-After` header field name.
`static String`	`SERVER` The HTTP `Server` header field name.
`static String`	`SET_COOKIE` The HTTP `Set-Cookie` header field name.
`static String`	`SET_COOKIE2` The HTTP `Set-Cookie2` header field name.
`static String`	`TE` The HTTP `TE` header field name.
`static String`	`TRAILER` The HTTP `Trailer` header field name.
`static String`	`TRANSFER_ENCODING` The HTTP `Transfer-Encoding` header field name.
`static String`	`UPGRADE` The HTTP `Upgrade` header field name.
`static String`	`USER_AGENT` The HTTP `User-Agent` header field name.
`static String`	`VARY` The HTTP `Vary` header field name.
`static String`	`VIA` The HTTP `Via` header field name.
`static String`	`WARNING` The HTTP `Warning` header field name.
`static String`	`WWW_AUTHENTICATE` The HTTP `WWW-Authenticate` header field name.

Constructor Summary

Constructors
Constructor and Description

HttpHeaders()
Constructs a new, empty instance of the HttpHeaders object.

Constructors
Constructor and Description
`HttpHeaders()` Constructs a new, empty instance of the `HttpHeaders` object.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods Deprecated Methods
Modifier and Type	Method and Description
`void`	`add(String headerName, String headerValue)` Add the given, single header value under the given name.
`void`	`clear()`
`boolean`	`containsKey(Object key)`
`boolean`	`containsValue(Object value)`
`Set<Map.Entry<String,List<String>>>`	`entrySet()`
`boolean`	`equals(Object other)`
`List<String>`	`get(Object key)`
`List<MediaType>`	`getAccept()` Return the list of acceptable media types, as specified by the `Accept` header.
`List<Charset>`	`getAcceptCharset()` Return the list of acceptable charsets, as specified by the `Accept-Charset` header.
`Set<HttpMethod>`	`getAllow()` Return the set of allowed `HTTP methods`, as specified by the `Allow` header.
`String`	`getCacheControl()` Returns the value of the `Cache-Control` header.
`List<String>`	`getConnection()` Returns the value of the `Connection` header.
`long`	`getContentLength()` Return the length of the body in bytes, as specified by the `Content-Length` header.
`MediaType`	`getContentType()` Return the media type of the body, as specified by the `Content-Type` header.
`long`	`getDate()` Returns the date and time at which the message was created, as specified by the `Date` header.
`String`	`getETag()` Returns the entity tag of the body, as specified by the `ETag` header.
`long`	`getExpires()` Returns the date and time at which the message is no longer valid, as specified by the `Expires` header.
`String`	`getFirst(String headerName)` Return the first header value for the given header name, if any.
`long`	`getFirstDate(String headerName)` Parse the first header value for the given header name as a date, return -1 if there is no value, or raise `IllegalArgumentException` if the value cannot be parsed as a date.
`protected List<String>`	`getFirstValueAsList(String header)`
`long`	`getIfModifiedSince()` Returns the value of the `If-Modified-Since` header.
`List<String>`	`getIfNoneMatch()` Returns the value of the `If-None-Match` header.
`long`	`getIfNotModifiedSince()` Deprecated. use `getIfModifiedSince()`
`long`	`getLastModified()` Returns the time the resource was last changed, as specified by the `Last-Modified` header.
`URI`	`getLocation()` Return the (new) location of a resource, as specified by the `Location` header.
`String`	`getOrigin()` Returns the value of the `Origin` header.
`String`	`getPragma()` Returns the value of the `Pragma` header.
`String`	`getUpgrade()` Returns the value of the `Upgrade` header.
`int`	`hashCode()`
`boolean`	`isEmpty()`
`Set<String>`	`keySet()`
`List<String>`	`put(String key, List<String> value)`
`void`	`putAll(Map<? extends String,? extends List<String>> m)`
`static HttpHeaders`	`readOnlyHttpHeaders(HttpHeaders headers)` Returns `HttpHeaders` object that can only be read, not written to.
`List<String>`	`remove(Object key)`
`void`	`set(String headerName, String headerValue)` Set the given, single header value under the given name.
`void`	`setAccept(List<MediaType> acceptableMediaTypes)` Set the list of acceptable media types, as specified by the `Accept` header.
`void`	`setAcceptCharset(List<Charset> acceptableCharsets)` Set the list of acceptable charsets, as specified by the `Accept-Charset` header.
`void`	`setAll(Map<String,String> values)` Set the given values under.
`void`	`setAllow(Set<HttpMethod> allowedMethods)` Set the set of allowed `HTTP methods`, as specified by the `Allow` header.
`void`	`setCacheControl(String cacheControl)` Sets the (new) value of the `Cache-Control` header.
`void`	`setConnection(List<String> connection)` Sets the (new) value of the `Connection` header.
`void`	`setConnection(String connection)` Sets the (new) value of the `Connection` header.
`void`	`setContentDispositionFormData(String name, String filename)` Sets the (new) value of the `Content-Disposition` header for `form-data`.
`void`	`setContentLength(long contentLength)` Set the length of the body in bytes, as specified by the `Content-Length` header.
`void`	`setContentType(MediaType mediaType)` Set the media type of the body, as specified by the `Content-Type` header.
`void`	`setDate(long date)` Sets the date and time at which the message was created, as specified by the `Date` header.
`void`	`setDate(String headerName, long date)` Set the given date under the given header name after formatting it as a string using the pattern `"EEE, dd MMM yyyy HH:mm:ss zzz"`.
`void`	`setETag(String eTag)` Sets the (new) entity tag of the body, as specified by the `ETag` header.
`void`	`setExpires(long expires)` Sets the date and time at which the message is no longer valid, as specified by the `Expires` header.
`void`	`setIfModifiedSince(long ifModifiedSince)` Sets the (new) value of the `If-Modified-Since` header.
`void`	`setIfNoneMatch(List<String> ifNoneMatchList)` Sets the (new) values of the `If-None-Match` header.
`void`	`setIfNoneMatch(String ifNoneMatch)` Sets the (new) value of the `If-None-Match` header.
`void`	`setLastModified(long lastModified)` Sets the time the resource was last changed, as specified by the `Last-Modified` header.
`void`	`setLocation(URI location)` Set the (new) location of a resource, as specified by the `Location` header.
`void`	`setOrigin(String origin)` Sets the (new) value of the `Origin` header.
`void`	`setPragma(String pragma)` Sets the (new) value of the `Pragma` header.
`void`	`setUpgrade(String upgrade)` Sets the (new) value of the `Upgrade` header.
`int`	`size()`
`protected String`	`toCommaDelimitedString(List<String> list)`
`Map<String,String>`	`toSingleValueMap()` Returns the first values contained in this `MultiValueMap`.
`String`	`toString()`
`Collection<List<String>>`	`values()`

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

Methods inherited from interface java.util.Map
compute, computeIfAbsent, computeIfPresent, forEach, getOrDefault, merge, putIfAbsent, remove, replace, replace, replaceAll

- Field Detail
  - ACCEPT
```
public static final String ACCEPT
```
    The HTTP Accept header field name.
    
    See Also:
    
    Section 5.3.2 of RFC 7231, Constant Field Values
  - ACCEPT_CHARSET
```
public static final String ACCEPT_CHARSET
```
    The HTTP Accept-Charset header field name.
    
    See Also:
    
    Section 5.3.3 of RFC 7231, Constant Field Values
  - ACCEPT_ENCODING
```
public static final String ACCEPT_ENCODING
```
    The HTTP Accept-Encoding header field name.
    
    See Also:
    
    Section 5.3.4 of RFC 7231, Constant Field Values
  - ACCEPT_LANGUAGE
```
public static final String ACCEPT_LANGUAGE
```
    The HTTP Accept-Language header field name.
    
    See Also:
    
    Section 5.3.5 of RFC 7231, Constant Field Values
  - ACCEPT_RANGES
```
public static final String ACCEPT_RANGES
```
    The HTTP Accept-Ranges header field name.
    
    See Also:
    
    Section 5.3.5 of RFC 7233, Constant Field Values
  - AGE
```
public static final String AGE
```
    The HTTP Age header field name.
    
    See Also:
    
    Section 5.1 of RFC 7234, Constant Field Values
  - ALLOW
```
public static final String ALLOW
```
    The HTTP Allow header field name.
    
    See Also:
    
    Section 7.4.1 of RFC 7231, Constant Field Values
  - AUTHORIZATION
```
public static final String AUTHORIZATION
```
    The HTTP Authorization header field name.
    
    See Also:
    
    Section 4.2 of RFC 7235, Constant Field Values
  - CACHE_CONTROL
```
public static final String CACHE_CONTROL
```
    The HTTP Cache-Control header field name.
    
    See Also:
    
    Section 5.2 of RFC 7234, Constant Field Values
  - CONNECTION
```
public static final String CONNECTION
```
    The HTTP Connection header field name.
    
    See Also:
    
    Section 6.1 of RFC 7230, Constant Field Values
  - CONTENT_ENCODING
```
public static final String CONTENT_ENCODING
```
    The HTTP Content-Encoding header field name.
    
    See Also:
    
    Section 3.1.2.2 of RFC 7231, Constant Field Values
  - CONTENT_DISPOSITION
```
public static final String CONTENT_DISPOSITION
```
    The HTTP Content-Disposition header field name
    
    See Also:
    
    RFC 6266, Constant Field Values
  - CONTENT_LANGUAGE
```
public static final String CONTENT_LANGUAGE
```
    The HTTP Content-Language header field name.
    
    See Also:
    
    Section 3.1.3.2 of RFC 7231, Constant Field Values
  - CONTENT_LENGTH
```
public static final String CONTENT_LENGTH
```
    The HTTP Content-Length header field name.
    
    See Also:
    
    Section 3.3.2 of RFC 7230, Constant Field Values
  - CONTENT_LOCATION
```
public static final String CONTENT_LOCATION
```
    The HTTP Content-Location header field name.
    
    See Also:
    
    Section 3.1.4.2 of RFC 7231, Constant Field Values
  - CONTENT_RANGE
```
public static final String CONTENT_RANGE
```
    The HTTP Content-Range header field name.
    
    See Also:
    
    Section 4.2 of RFC 7233, Constant Field Values
  - CONTENT_TYPE
```
public static final String CONTENT_TYPE
```
    The HTTP Content-Type header field name.
    
    See Also:
    
    Section 3.1.1.5 of RFC 7231, Constant Field Values
  - COOKIE
```
public static final String COOKIE
```
    The HTTP Cookie header field name.
    
    See Also:
    
    Section 4.3.4 of RFC 2109, Constant Field Values
  - DATE
```
public static final String DATE
```
    The HTTP Date header field name.
    
    See Also:
    
    Section 7.1.1.2 of RFC 7231, Constant Field Values
  - ETAG
```
public static final String ETAG
```
    The HTTP ETag header field name.
    
    See Also:
    
    Section 2.3 of RFC 7232, Constant Field Values
  - EXPECT
```
public static final String EXPECT
```
    The HTTP Expect header field name.
    
    See Also:
    
    Section 5.1.1 of RFC 7231, Constant Field Values
  - EXPIRES
```
public static final String EXPIRES
```
    The HTTP Expires header field name.
    
    See Also:
    
    Section 5.3 of RFC 7234, Constant Field Values
  - FROM
```
public static final String FROM
```
    The HTTP From header field name.
    
    See Also:
    
    Section 5.5.1 of RFC 7231, Constant Field Values
  - HOST
```
public static final String HOST
```
    The HTTP Host header field name.
    
    See Also:
    
    Section 5.4 of RFC 7230, Constant Field Values
  - IF_MATCH
```
public static final String IF_MATCH
```
    The HTTP If-Match header field name.
    
    See Also:
    
    Section 3.1 of RFC 7232, Constant Field Values
  - IF_MODIFIED_SINCE
```
public static final String IF_MODIFIED_SINCE
```
    The HTTP If-Modified-Since header field name.
    
    See Also:
    
    Section 3.3 of RFC 7232, Constant Field Values
  - IF_NONE_MATCH
```
public static final String IF_NONE_MATCH
```
    The HTTP If-None-Match header field name.
    
    See Also:
    
    Section 3.2 of RFC 7232, Constant Field Values
  - IF_RANGE
```
public static final String IF_RANGE
```
    The HTTP If-Range header field name.
    
    See Also:
    
    Section 3.2 of RFC 7233, Constant Field Values
  - IF_UNMODIFIED_SINCE
```
public static final String IF_UNMODIFIED_SINCE
```
    The HTTP If-Unmodified-Since header field name.
    
    See Also:
    
    Section 3.4 of RFC 7232, Constant Field Values
  - LAST_MODIFIED
```
public static final String LAST_MODIFIED
```
    The HTTP Last-Modified header field name.
    
    See Also:
    
    Section 2.2 of RFC 7232, Constant Field Values
  - LINK
```
public static final String LINK
```
    The HTTP Link header field name.
    
    See Also:
    
    RFC 5988, Constant Field Values
  - LOCATION
```
public static final String LOCATION
```
    The HTTP Location header field name.
    
    See Also:
    
    Section 7.1.2 of RFC 7231, Constant Field Values
  - MAX_FORWARDS
```
public static final String MAX_FORWARDS
```
    The HTTP Max-Forwards header field name.
    
    See Also:
    
    Section 5.1.2 of RFC 7231, Constant Field Values
  - ORIGIN
```
public static final String ORIGIN
```
    The HTTP Origin header field name.
    
    See Also:
    
    RFC 6454, Constant Field Values
  - PRAGMA
```
public static final String PRAGMA
```
    The HTTP Pragma header field name.
    
    See Also:
    
    Section 5.4 of RFC 7234, Constant Field Values
  - PROXY_AUTHENTICATE
```
public static final String PROXY_AUTHENTICATE
```
    The HTTP Proxy-Authenticate header field name.
    
    See Also:
    
    Section 4.3 of RFC 7235, Constant Field Values
  - PROXY_AUTHORIZATION
```
public static final String PROXY_AUTHORIZATION
```
    The HTTP Proxy-Authorization header field name.
    
    See Also:
    
    Section 4.4 of RFC 7235, Constant Field Values
  - RANGE
```
public static final String RANGE
```
    The HTTP Range header field name.
    
    See Also:
    
    Section 3.1 of RFC 7233, Constant Field Values
  - REFERER
```
public static final String REFERER
```
    The HTTP Referer header field name.
    
    See Also:
    
    Section 5.5.2 of RFC 7231, Constant Field Values
  - RETRY_AFTER
```
public static final String RETRY_AFTER
```
    The HTTP Retry-After header field name.
    
    See Also:
    
    Section 7.1.3 of RFC 7231, Constant Field Values
  - SERVER
```
public static final String SERVER
```
    The HTTP Server header field name.
    
    See Also:
    
    Section 7.4.2 of RFC 7231, Constant Field Values
  - SET_COOKIE
```
public static final String SET_COOKIE
```
    The HTTP Set-Cookie header field name.
    
    See Also:
    
    Section 4.2.2 of RFC 2109, Constant Field Values
  - SET_COOKIE2
```
public static final String SET_COOKIE2
```
    The HTTP Set-Cookie2 header field name.
    
    See Also:
    
    RFC 2965, Constant Field Values
  - TE
```
public static final String TE
```
    The HTTP TE header field name.
    
    See Also:
    
    Section 4.3 of RFC 7230, Constant Field Values
  - TRAILER
```
public static final String TRAILER
```
    The HTTP Trailer header field name.
    
    See Also:
    
    Section 4.4 of RFC 7230, Constant Field Values
  - TRANSFER_ENCODING
```
public static final String TRANSFER_ENCODING
```
    The HTTP Transfer-Encoding header field name.
    
    See Also:
    
    Section 3.3.1 of RFC 7230, Constant Field Values
  - UPGRADE
```
public static final String UPGRADE
```
    The HTTP Upgrade header field name.
    
    See Also:
    
    Section 6.7 of RFC 7230, Constant Field Values
  - USER_AGENT
```
public static final String USER_AGENT
```
    The HTTP User-Agent header field name.
    
    See Also:
    
    Section 5.5.3 of RFC 7231, Constant Field Values
  - VARY
```
public static final String VARY
```
    The HTTP Vary header field name.
    
    See Also:
    
    Section 7.1.4 of RFC 7231, Constant Field Values
  - VIA
```
public static final String VIA
```
    The HTTP Via header field name.
    
    See Also:
    
    Section 5.7.1 of RFC 7230, Constant Field Values
  - WARNING
```
public static final String WARNING
```
    The HTTP Warning header field name.
    
    See Also:
    
    Section 5.5 of RFC 7234, Constant Field Values
  - WWW_AUTHENTICATE
```
public static final String WWW_AUTHENTICATE
```
    The HTTP WWW-Authenticate header field name.
    
    See Also:
    
    Section 4.1 of RFC 7235, Constant Field Values
- Constructor Detail
  - HttpHeaders
```
public HttpHeaders()
```
    Constructs a new, empty instance of the HttpHeaders object.
- Method Detail
  - readOnlyHttpHeaders
```
public static HttpHeaders readOnlyHttpHeaders(HttpHeaders headers)
```
    Returns HttpHeaders object that can only be read, not written to.
  - setAccept
```
public void setAccept(List<MediaType> acceptableMediaTypes)
```
    Set the list of acceptable media types, as specified by the Accept header.
    
    Parameters:
    
    acceptableMediaTypes - the acceptable media types
  - getAccept
```
public List<MediaType> getAccept()
```
    Return the list of acceptable media types, as specified by the Accept header.
    Returns an empty list when the acceptable media types are unspecified.
    
    Returns:
    
    the acceptable media types
  - setAcceptCharset
```
public void setAcceptCharset(List<Charset> acceptableCharsets)
```
    Set the list of acceptable charsets, as specified by the Accept-Charset header.
    
    Parameters:
    
    acceptableCharsets - the acceptable charsets
  - getAcceptCharset
```
public List<Charset> getAcceptCharset()
```
    Return the list of acceptable charsets, as specified by the Accept-Charset header.
    
    Returns:
    
    the acceptable charsets
  - setAllow
```
public void setAllow(Set<HttpMethod> allowedMethods)
```
    Set the set of allowed HTTP methods, as specified by the Allow header.
    
    Parameters:
    
    allowedMethods - the allowed methods
  - getAllow
```
public Set<HttpMethod> getAllow()
```
    Return the set of allowed HTTP methods, as specified by the Allow header.
    Returns an empty set when the allowed methods are unspecified.
    
    Returns:
    
    the allowed methods
  - setCacheControl
```
public void setCacheControl(String cacheControl)
```
    Sets the (new) value of the Cache-Control header.
    
    Parameters:
    
    cacheControl - the value of the header
  - getCacheControl
```
public String getCacheControl()
```
    Returns the value of the Cache-Control header.
    
    Returns:
    
    the value of the header
  - setConnection
```
public void setConnection(String connection)
```
    Sets the (new) value of the Connection header.
    
    Parameters:
    
    connection - the value of the header
  - setConnection
```
public void setConnection(List<String> connection)
```
    Sets the (new) value of the Connection header.
    
    Parameters:
    
    connection - the value of the header
  - getConnection
```
public List<String> getConnection()
```
    Returns the value of the Connection header.
    
    Returns:
    
    the value of the header
  - setContentDispositionFormData
```
public void setContentDispositionFormData(String name,
                                          String filename)
```
    Sets the (new) value of the Content-Disposition header for form-data.
    
    Parameters:
    
    name - the control name
    
    filename - the filename, may be null
  - setContentLength
```
public void setContentLength(long contentLength)
```
    Set the length of the body in bytes, as specified by the Content-Length header.
    
    Parameters:
    
    contentLength - the content length
  - getContentLength
```
public long getContentLength()
```
    Return the length of the body in bytes, as specified by the Content-Length header.
    Returns -1 when the content-length is unknown.
    
    Returns:
    
    the content length
  - setContentType
```
public void setContentType(MediaType mediaType)
```
    Set the media type of the body, as specified by the Content-Type header.
    
    Parameters:
    
    mediaType - the media type
  - getContentType
```
public MediaType getContentType()
```
    Return the media type of the body, as specified by the Content-Type header.
    Returns null when the content-type is unknown.
    
    Returns:
    
    the content type
  - setDate
```
public void setDate(long date)
```
    Sets the date and time at which the message was created, as specified by the Date header.
    The date should be specified as the number of milliseconds since January 1, 1970 GMT.
    
    Parameters:
    
    date - the date
  - getDate
```
public long getDate()
```
    Returns the date and time at which the message was created, as specified by the Date header.
    The date is returned as the number of milliseconds since January 1, 1970 GMT. Returns -1 when the date is unknown.
    
    Returns:
    
    the creation date/time
    
    Throws:
    
    IllegalArgumentException - if the value can't be converted to a date
  - setETag
```
public void setETag(String eTag)
```
    Sets the (new) entity tag of the body, as specified by the ETag header.
    
    Parameters:
    
    eTag - the new entity tag
  - getETag
```
public String getETag()
```
    Returns the entity tag of the body, as specified by the ETag header.
    
    Returns:
    
    the entity tag
  - setExpires
```
public void setExpires(long expires)
```
    Sets the date and time at which the message is no longer valid, as specified by the Expires header.
    The date should be specified as the number of milliseconds since January 1, 1970 GMT.
    
    Parameters:
    
    expires - the new expires header value
  - getExpires
```
public long getExpires()
```
    Returns the date and time at which the message is no longer valid, as specified by the Expires header.
    The date is returned as the number of milliseconds since January 1, 1970 GMT. Returns -1 when the date is unknown.
    
    Returns:
    
    the expires value
  - setIfModifiedSince
```
public void setIfModifiedSince(long ifModifiedSince)
```
    Sets the (new) value of the If-Modified-Since header.
    The date should be specified as the number of milliseconds since January 1, 1970 GMT.
    
    Parameters:
    
    ifModifiedSince - the new value of the header
  - getIfNotModifiedSince
```
@Deprecated
public long getIfNotModifiedSince()
```
    Deprecated. use getIfModifiedSince()
    
    Returns the value of the IfModifiedSince header.
    The date is returned as the number of milliseconds since January 1, 1970 GMT. Returns -1 when the date is unknown.
    
    Returns:
    
    the header value
  - getIfModifiedSince
```
public long getIfModifiedSince()
```
    Returns the value of the If-Modified-Since header.
    The date is returned as the number of milliseconds since January 1, 1970 GMT. Returns -1 when the date is unknown.
    
    Returns:
    
    the header value
  - setIfNoneMatch
```
public void setIfNoneMatch(String ifNoneMatch)
```
    Sets the (new) value of the If-None-Match header.
    
    Parameters:
    
    ifNoneMatch - the new value of the header
  - setIfNoneMatch
```
public void setIfNoneMatch(List<String> ifNoneMatchList)
```
    Sets the (new) values of the If-None-Match header.
    
    Parameters:
    
    ifNoneMatchList - the new value of the header
  - toCommaDelimitedString
```
protected String toCommaDelimitedString(List<String> list)
```
  - getIfNoneMatch
```
public List<String> getIfNoneMatch()
```
    Returns the value of the If-None-Match header.
    
    Returns:
    
    the header value
  - getFirstValueAsList
```
protected List<String> getFirstValueAsList(String header)
```
  - setLastModified
```
public void setLastModified(long lastModified)
```
    Sets the time the resource was last changed, as specified by the Last-Modified header.
    The date should be specified as the number of milliseconds since January 1, 1970 GMT.
    
    Parameters:
    
    lastModified - the last modified date
  - getLastModified
```
public long getLastModified()
```
    Returns the time the resource was last changed, as specified by the Last-Modified header.
    The date is returned as the number of milliseconds since January 1, 1970 GMT. Returns -1 when the date is unknown.
    
    Returns:
    
    the last modified date
  - setLocation
```
public void setLocation(URI location)
```
    Set the (new) location of a resource, as specified by the Location header.
    
    Parameters:
    
    location - the location
  - getLocation
```
public URI getLocation()
```
    Return the (new) location of a resource, as specified by the Location header.
    Returns null when the location is unknown.
    
    Returns:
    
    the location
  - setOrigin
```
public void setOrigin(String origin)
```
    Sets the (new) value of the Origin header.
    
    Parameters:
    
    origin - the value of the header
  - getOrigin
```
public String getOrigin()
```
    Returns the value of the Origin header.
    
    Returns:
    
    the value of the header
  - setPragma
```
public void setPragma(String pragma)
```
    Sets the (new) value of the Pragma header.
    
    Parameters:
    
    pragma - the value of the header
  - getPragma
```
public String getPragma()
```
    Returns the value of the Pragma header.
    
    Returns:
    
    the value of the header
  - setUpgrade
```
public void setUpgrade(String upgrade)
```
    Sets the (new) value of the Upgrade header.
    
    Parameters:
    
    upgrade - the value of the header
  - getUpgrade
```
public String getUpgrade()
```
    Returns the value of the Upgrade header.
    
    Returns:
    
    the value of the header
  - getFirstDate
```
public long getFirstDate(String headerName)
```
    Parse the first header value for the given header name as a date, return -1 if there is no value, or raise IllegalArgumentException if the value cannot be parsed as a date.
  - setDate
```
public void setDate(String headerName,
                    long date)
```
    Set the given date under the given header name after formatting it as a string using the pattern "EEE, dd MMM yyyy HH:mm:ss zzz". The equivalent of set(String, String) but for date headers.
  - getFirst
```
public String getFirst(String headerName)
```
    Return the first header value for the given header name, if any.
    
    Specified by:
    
    getFirst in interface MultiValueMap<String,String>
    
    Parameters:
    
    headerName - the header name
    
    Returns:
    
    the first header value; or null
  - add
```
public void add(String headerName,
                String headerValue)
```
    Add the given, single header value under the given name.
    
    Specified by:
    
    add in interface MultiValueMap<String,String>
    
    Parameters:
    
    headerName - the header name
    
    headerValue - the header value
    
    Throws:
    
    UnsupportedOperationException - if adding headers is not supported
    
    See Also:
    
    put(String, List), set(String, String)
  - set
```
public void set(String headerName,
                String headerValue)
```
    Set the given, single header value under the given name.
    
    Specified by:
    
    set in interface MultiValueMap<String,String>
    
    Parameters:
    
    headerName - the header name
    
    headerValue - the header value
    
    Throws:
    
    UnsupportedOperationException - if adding headers is not supported
    
    See Also:
    
    put(String, List), add(String, String)
  - setAll
```
public void setAll(Map<String,String> values)
```
    Description copied from interface: MultiValueMap
    
    Set the given values under.
    
    Specified by:
    
    setAll in interface MultiValueMap<String,String>
    
    Parameters:
    
    values - the values.
  - toSingleValueMap
```
public Map<String,String> toSingleValueMap()
```
    Description copied from interface: MultiValueMap
    
    Returns the first values contained in this MultiValueMap.
    
    Specified by:
    
    toSingleValueMap in interface MultiValueMap<String,String>
    
    Returns:
    
    a single value representation of this map
  - size
```
public int size()
```
    Specified by:
    
    size in interface Map<String,List<String>>
  - isEmpty
```
public boolean isEmpty()
```
    Specified by:
    
    isEmpty in interface Map<String,List<String>>
  - containsKey
```
public boolean containsKey(Object key)
```
    Specified by:
    
    containsKey in interface Map<String,List<String>>
  - containsValue
```
public boolean containsValue(Object value)
```
    Specified by:
    
    containsValue in interface Map<String,List<String>>
  - get
```
public List<String> get(Object key)
```
    Specified by:
    
    get in interface Map<String,List<String>>
  - put
```
public List<String> put(String key,
                        List<String> value)
```
    Specified by:
    
    put in interface Map<String,List<String>>
  - remove
```
public List<String> remove(Object key)
```
    Specified by:
    
    remove in interface Map<String,List<String>>
  - putAll
```
public void putAll(Map<? extends String,? extends List<String>> m)
```
    Specified by:
    
    putAll in interface Map<String,List<String>>
  - clear
```
public void clear()
```
    Specified by:
    
    clear in interface Map<String,List<String>>
  - keySet
```
public Set<String> keySet()
```
    Specified by:
    
    keySet in interface Map<String,List<String>>
  - values
```
public Collection<List<String>> values()
```
    Specified by:
    
    values in interface Map<String,List<String>>
  - entrySet
```
public Set<Map.Entry<String,List<String>>> entrySet()
```
    Specified by:
    
    entrySet in interface Map<String,List<String>>
  - equals
```
public boolean equals(Object other)
```
    Specified by:
    
    equals in interface Map<String,List<String>>
    
    Overrides:
    
    equals in class Object
  - hashCode
```
public int hashCode()
```
    Specified by:
    
    hashCode in interface Map<String,List<String>>
    
    Overrides:
    
    hashCode in class Object
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object

Class HttpHeaders

Nested Class Summary

Nested classes/interfaces inherited from interface java.util.Map

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Methods inherited from interface java.util.Map

Field Detail

ACCEPT

ACCEPT_CHARSET

ACCEPT_ENCODING

ACCEPT_LANGUAGE

ACCEPT_RANGES

AGE

ALLOW

AUTHORIZATION

CACHE_CONTROL

CONNECTION

CONTENT_ENCODING

CONTENT_DISPOSITION

CONTENT_LANGUAGE

CONTENT_LENGTH

CONTENT_LOCATION

CONTENT_RANGE

CONTENT_TYPE

COOKIE

DATE

ETAG

EXPECT

EXPIRES

FROM

HOST

IF_MATCH

IF_MODIFIED_SINCE

IF_NONE_MATCH

IF_RANGE

IF_UNMODIFIED_SINCE

LAST_MODIFIED

LINK

LOCATION

MAX_FORWARDS

ORIGIN

PRAGMA

PROXY_AUTHENTICATE

PROXY_AUTHORIZATION

RANGE

REFERER

RETRY_AFTER

SERVER

SET_COOKIE

SET_COOKIE2

TE

TRAILER

TRANSFER_ENCODING

UPGRADE

USER_AGENT

VARY

VIA

WARNING

WWW_AUTHENTICATE

Constructor Detail

HttpHeaders

Method Detail

readOnlyHttpHeaders

setAccept

getAccept

setAcceptCharset

getAcceptCharset

setAllow

getAllow

setCacheControl

getCacheControl

setConnection

setConnection

getConnection

setContentDispositionFormData

setContentLength

getContentLength

setContentType