ContentNegotiationConfigurer (Spring Framework 4.2.2.RELEASE API)

java.lang.Object
- org.springframework.web.servlet.config.annotation.ContentNegotiationConfigurer

public class ContentNegotiationConfigurer
extends Object

Creates a ContentNegotiationManager and configures it with one or more ContentNegotiationStrategy instances. The following shows the resulting strategy instances, the methods used to configured them, and whether enabled by default:

`favorPathExtension(boolean)`	`PathExtensionContentNegotiationStrategy`	Yes
`favorParameter(boolean)`	`ParameterContentNegotiationStrategy`	-
`ignoreAcceptHeader(boolean)`	`HeaderContentNegotiationStrategy`	Yes
`defaultContentType(org.springframework.http.MediaType)`	`FixedContentNegotiationStrategy`	-
`defaultContentTypeStrategy(org.springframework.web.accept.ContentNegotiationStrategy)`	`ContentNegotiationStrategy`	-

The order in which strategies are configured is fixed. You can only turn them on or off.

For the path extension and parameter strategies you may explicitly add MediaType mappings. Those will be used to resolve path extensions and/or a query parameter value such as "json" to a concrete media type such as "application/json".

The path extension strategy will also use ServletContext.getMimeType(java.lang.String) and the Java Activation framework (JAF), if available, to resolve a path extension to a MediaType. You may however suppress the use of JAF.

Since:: 3.2
Author:: Rossen Stoyanchev

Constructor Summary

Constructors
Constructor and Description

ContentNegotiationConfigurer(ServletContext servletContext)
Class constructor with ServletContext.

Constructors
Constructor and Description
`ContentNegotiationConfigurer(ServletContext servletContext)` Class constructor with `ServletContext`.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`ContentNegotiationConfigurer`	`defaultContentType(MediaType defaultContentType)` Set the default content type to use when no content type is requested.
`ContentNegotiationConfigurer`	`defaultContentTypeStrategy(ContentNegotiationStrategy defaultStrategy)` Set a custom `ContentNegotiationStrategy` to use to determine the content type to use when no content type is requested.
`ContentNegotiationConfigurer`	`favorParameter(boolean favorParameter)` Whether a request parameter ("format" by default) should be used to determine the requested media type.
`ContentNegotiationConfigurer`	`favorPathExtension(boolean favorPathExtension)` Whether the path extension in the URL path should be used to determine the requested media type.
`protected ContentNegotiationManager`	`getContentNegotiationManager()`
`ContentNegotiationConfigurer`	`ignoreAcceptHeader(boolean ignoreAcceptHeader)` Whether to disable checking the 'Accept' request header.
`ContentNegotiationConfigurer`	`ignoreUnknownPathExtensions(boolean ignore)` Whether to ignore requests with path extension that cannot be resolved to any media type.
`ContentNegotiationConfigurer`	`mediaType(String extension, MediaType mediaType)` Add a mapping from a key, extracted from a path extension or a query parameter, to a MediaType.
`ContentNegotiationConfigurer`	`mediaTypes(Map<String,MediaType> mediaTypes)` An alternative to `mediaType(java.lang.String, org.springframework.http.MediaType)`.
`ContentNegotiationConfigurer`	`parameterName(String parameterName)` Set the query parameter name to use when `favorParameter(boolean)` is on.
`ContentNegotiationConfigurer`	`replaceMediaTypes(Map<String,MediaType> mediaTypes)` Similar to `mediaType(java.lang.String, org.springframework.http.MediaType)` but for replacing existing mappings.
`ContentNegotiationConfigurer`	`useJaf(boolean useJaf)` When `favorPathExtension(boolean)` is set, this property determines whether to allow use of JAF (Java Activation Framework) to resolve a path extension to a specific MediaType.

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

- Constructor Detail
  - ContentNegotiationConfigurer
```
public ContentNegotiationConfigurer(ServletContext servletContext)
```
    Class constructor with ServletContext.
- Method Detail
  - favorPathExtension
```
public ContentNegotiationConfigurer favorPathExtension(boolean favorPathExtension)
```
    Whether the path extension in the URL path should be used to determine the requested media type.
    By default this is set to true in which case a request for /hotels.pdf will be interpreted as a request for "application/pdf" regardless of the 'Accept' header.
  - mediaType
```
public ContentNegotiationConfigurer mediaType(String extension,
                                              MediaType mediaType)
```
    Add a mapping from a key, extracted from a path extension or a query parameter, to a MediaType. This is required in order for the parameter strategy to work. The path extension strategy will also try ServletContext.getMimeType(java.lang.String) and JAF if it is present and is not suppressed via useJaf(boolean).
    
    Parameters:
    
    extension - the key to look up
    
    mediaType - the media type
    
    See Also:
    
    mediaTypes(Map), replaceMediaTypes(Map)
  - mediaTypes
```
public ContentNegotiationConfigurer mediaTypes(Map<String,MediaType> mediaTypes)
```
    An alternative to mediaType(java.lang.String, org.springframework.http.MediaType).
    
    See Also:
    
    mediaType(String, MediaType), replaceMediaTypes(Map)
  - replaceMediaTypes
```
public ContentNegotiationConfigurer replaceMediaTypes(Map<String,MediaType> mediaTypes)
```
    Similar to mediaType(java.lang.String, org.springframework.http.MediaType) but for replacing existing mappings.
    
    See Also:
    
    mediaType(String, MediaType), mediaTypes(Map)
  - ignoreUnknownPathExtensions
```
public ContentNegotiationConfigurer ignoreUnknownPathExtensions(boolean ignore)
```
    Whether to ignore requests with path extension that cannot be resolved to any media type. Setting this to false will result in an HttpMediaTypeNotAcceptableException if there is no match.
    By default this is set to true.
  - useJaf
```
public ContentNegotiationConfigurer useJaf(boolean useJaf)
```
    When favorPathExtension(boolean) is set, this property determines whether to allow use of JAF (Java Activation Framework) to resolve a path extension to a specific MediaType.
    By default this is not set in which case PathExtensionContentNegotiationStrategy will use JAF if available.
  - favorParameter
```
public ContentNegotiationConfigurer favorParameter(boolean favorParameter)
```
    Whether a request parameter ("format" by default) should be used to determine the requested media type. For this option to work you must register media type mappings.
    By default this is set to false.
    
    See Also:
    
    parameterName(String)
  - parameterName
```
public ContentNegotiationConfigurer parameterName(String parameterName)
```
    Set the query parameter name to use when favorParameter(boolean) is on.
    The default parameter name is "format".
  - ignoreAcceptHeader
```
public ContentNegotiationConfigurer ignoreAcceptHeader(boolean ignoreAcceptHeader)
```
    Whether to disable checking the 'Accept' request header.
    By default this value is set to false.
  - defaultContentType
```
public ContentNegotiationConfigurer defaultContentType(MediaType defaultContentType)
```
    Set the default content type to use when no content type is requested.
    By default this is not set.
    
    See Also:
    
    defaultContentTypeStrategy(org.springframework.web.accept.ContentNegotiationStrategy)
  - defaultContentTypeStrategy
```
public ContentNegotiationConfigurer defaultContentTypeStrategy(ContentNegotiationStrategy defaultStrategy)
```
    Set a custom ContentNegotiationStrategy to use to determine the content type to use when no content type is requested.
    
    Since:
    
    4.1.2
    
    See Also:
    
    defaultContentType(org.springframework.http.MediaType)
  - getContentNegotiationManager
```
protected ContentNegotiationManager getContentNegotiationManager()
                                                          throws Exception
```
    Throws:
    
    Exception

Class ContentNegotiationConfigurer

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

ContentNegotiationConfigurer

Method Detail

favorPathExtension

mediaType

mediaTypes

replaceMediaTypes

ignoreUnknownPathExtensions

useJaf

favorParameter

parameterName

ignoreAcceptHeader

defaultContentType

defaultContentTypeStrategy

getContentNegotiationManager