Class ContentNegotiationManagerFactoryBean
- java.lang.Object
- org.springframework.web.accept.ContentNegotiationManagerFactoryBean
- All Implemented Interfaces:
Aware,FactoryBean<ContentNegotiationManager>,InitializingBean,ServletContextAware
public class ContentNegotiationManagerFactoryBean extends Object implements FactoryBean<ContentNegotiationManager>, ServletContextAware, InitializingBean
Factory to create aContentNegotiationManagerand configure it withContentNegotiationStrategyinstances.This factory offers properties that in turn result in configuring the underlying strategies. The table below shows the property names, their default settings, as well as the strategies that they help to configure:
Property Setter Default Value Underlying Strategy Enabled Or Not favorPathExtensiontrue PathExtensionContentNegotiationStrategyEnabled favorParameterfalse ParameterContentNegotiationStrategyOff ignoreAcceptHeaderfalse HeaderContentNegotiationStrategyEnabled defaultContentTypenull FixedContentNegotiationStrategyOff defaultContentTypeStrategynull ContentNegotiationStrategyOff Alternatively you can avoid use of the above convenience builder methods and set the exact strategies to use via
setStrategies(List).Deprecation Note: As of 5.2.4,
favorPathExtensionandignoreUnknownPathExtensionsare deprecated in order to discourage using path extensions for content negotiation and for request mapping with similar deprecations onRequestMappingHandlerMapping. For further context, please read issue #24719.- Since:
- 3.2
- Author:
- Rossen Stoyanchev, Brian Clozel
Field Summary
Fields inherited from interface org.springframework.beans.factory.FactoryBean
OBJECT_TYPE_ATTRIBUTE
Constructor Summary
Constructors Constructor Description ContentNegotiationManagerFactoryBean()
Method Summary
All Methods Instance Methods Concrete Methods Deprecated Methods Modifier and Type Method Description voidaddMediaType(String key, MediaType mediaType)An alternative tosetMediaTypes(java.util.Properties)for programmatic registrations.voidaddMediaTypes(Map<String,MediaType> mediaTypes)An alternative tosetMediaTypes(java.util.Properties)for programmatic registrations.voidafterPropertiesSet()Invoked by the containingBeanFactoryafter it has set all bean properties and satisfiedBeanFactoryAware,ApplicationContextAwareetc.ContentNegotiationManagerbuild()Create and initialize aContentNegotiationManagerinstance.ContentNegotiationManagergetObject()Return an instance (possibly shared or independent) of the object managed by this factory.Class<?>getObjectType()Return the type of object that this FactoryBean creates, ornullif not known in advance.booleanisSingleton()Is the object managed by this factory a singleton? That is, willFactoryBean.getObject()always return the same object (a reference that can be cached)?voidsetDefaultContentType(MediaType contentType)Set the default content type to use when no content type is requested.voidsetDefaultContentTypes(List<MediaType> contentTypes)Set the default content types to use when no content type is requested.voidsetDefaultContentTypeStrategy(ContentNegotiationStrategy strategy)Set a customContentNegotiationStrategyto use to determine the content type to use when no content type is requested.voidsetFavorParameter(boolean favorParameter)Whether a request parameter ("format" by default) should be used to determine the requested media type.voidsetFavorPathExtension(boolean favorPathExtension)Deprecated.as of 5.2.4.voidsetIgnoreAcceptHeader(boolean ignoreAcceptHeader)Whether to disable checking the 'Accept' request header.voidsetIgnoreUnknownPathExtensions(boolean ignore)Deprecated.as of 5.2.4.voidsetMediaTypes(Properties mediaTypes)Add a mapping from a key to a MediaType where the key are normalized to lowercase and may have been extracted from a path extension, a filename extension, or passed as a query parameter.voidsetParameterName(String parameterName)Set the query parameter name to use whensetFavorParameter(boolean)is on.voidsetServletContext(ServletContext servletContext)Invoked by Spring to inject the ServletContext.voidsetStrategies(List<ContentNegotiationStrategy> strategies)Set the exact list of strategies to use.voidsetUseJaf(boolean useJaf)Deprecated.as of 5.0, in favor ofsetUseRegisteredExtensionsOnly(boolean), which has reverse behavior.voidsetUseRegisteredExtensionsOnly(boolean useRegisteredExtensionsOnly)WhenfavorPathExtensionorsetFavorParameter(boolean)is set, this property determines whether to use only registeredMediaTypemappings or to allow dynamic resolution, e.g.
Constructor Detail
ContentNegotiationManagerFactoryBean
public ContentNegotiationManagerFactoryBean()
Method Detail
setStrategies
public void setStrategies(@Nullable List<ContentNegotiationStrategy> strategies)
Set the exact list of strategies to use.Note: use of this method is mutually exclusive with use of all other setters in this class which customize a default, fixed set of strategies. See class level doc for more details.
- Parameters:
strategies- the strategies to use- Since:
- 5.0
setFavorPathExtension
@Deprecated public void setFavorPathExtension(boolean favorPathExtension)
Deprecated.as of 5.2.4. See class-level note on the deprecation of path extension config options. As there is no replacement for this method, for the time being it's necessary to continue using it in order to set it tofalse. In 5.3 whenfalsebecomes the default, use of this property will no longer be necessary.Whether the path extension in the URL path should be used to determine the requested media type.By default this is set to
truein which case a request for/hotels.pdfwill be interpreted as a request for"application/pdf"regardless of the 'Accept' header.
setMediaTypes
public void setMediaTypes(Properties mediaTypes)
Add a mapping from a key to a MediaType where the key are normalized to lowercase and may have been extracted from a path extension, a filename extension, or passed as a query parameter.The
parameter strategyrequires such mappings in order to work while thepath extension strategycan fall back on lookups viaServletContext.getMimeType(java.lang.String)andMediaTypeFactory.Note: Mappings registered here may be accessed via
ContentNegotiationManager.getMediaTypeMappings()and may be used not only in the parameter and path extension strategies. For example, with the Spring MVC config, e.g.@EnableWebMvcor<mvc:annotation-driven>, the media type mappings are also plugged in to:- Determine the media type of static resources served with
ResourceHttpRequestHandler. - Determine the media type of views rendered with
ContentNegotiatingViewResolver. - List safe extensions for RFD attack detection (check the Spring Framework reference docs for details).
- Parameters:
mediaTypes- media type mappings- See Also:
addMediaType(String, MediaType),addMediaTypes(Map)
- Determine the media type of static resources served with
addMediaType
public void addMediaType(String key, MediaType mediaType)
An alternative tosetMediaTypes(java.util.Properties)for programmatic registrations.
addMediaTypes
public void addMediaTypes(@Nullable Map<String,MediaType> mediaTypes)
An alternative tosetMediaTypes(java.util.Properties)for programmatic registrations.
setIgnoreUnknownPathExtensions
@Deprecated public void setIgnoreUnknownPathExtensions(boolean ignore)
Deprecated.as of 5.2.4. See class-level note on the deprecation of path extension config options.Whether to ignore requests with path extension that cannot be resolved to any media type. Setting this tofalsewill result in anHttpMediaTypeNotAcceptableExceptionif there is no match.By default this is set to
true.
setUseJaf
@Deprecated public void setUseJaf(boolean useJaf)
Deprecated.as of 5.0, in favor ofsetUseRegisteredExtensionsOnly(boolean), which has reverse behavior.Indicate whether to use the Java Activation Framework as a fallback option to map from file extensions to media types.
setUseRegisteredExtensionsOnly
public void setUseRegisteredExtensionsOnly(boolean useRegisteredExtensionsOnly)
WhenfavorPathExtensionorsetFavorParameter(boolean)is set, this property determines whether to use only registeredMediaTypemappings or to allow dynamic resolution, e.g. viaMediaTypeFactory.By default this is not set in which case dynamic resolution is on.
setFavorParameter
public void setFavorParameter(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 registermedia type mappings.By default this is set to
false.- See Also:
setParameterName(java.lang.String)
setParameterName
public void setParameterName(String parameterName)
Set the query parameter name to use whensetFavorParameter(boolean)is on.The default parameter name is
"format".
setIgnoreAcceptHeader
public void setIgnoreAcceptHeader(boolean ignoreAcceptHeader)
Whether to disable checking the 'Accept' request header.By default this value is set to
false.
setDefaultContentType
public void setDefaultContentType(MediaType contentType)
Set the default content type to use when no content type is requested.By default this is not set.
setDefaultContentTypes
public void setDefaultContentTypes(List<MediaType> contentTypes)
Set the default content types to use when no content type is requested.By default this is not set.
setDefaultContentTypeStrategy
public void setDefaultContentTypeStrategy(ContentNegotiationStrategy strategy)
Set a customContentNegotiationStrategyto use to determine the content type to use when no content type is requested.By default this is not set.
- Since:
- 4.1.2
- See Also:
setDefaultContentType(org.springframework.http.MediaType)
setServletContext
public void setServletContext(ServletContext servletContext)
Invoked by Spring to inject the ServletContext.- Specified by:
setServletContextin interfaceServletContextAware- Parameters:
servletContext- the ServletContext object to be used by this object- See Also:
InitializingBean.afterPropertiesSet(),ApplicationContextAware.setApplicationContext(org.springframework.context.ApplicationContext)
afterPropertiesSet
public void afterPropertiesSet()
Description copied from interface:InitializingBeanInvoked by the containingBeanFactoryafter it has set all bean properties and satisfiedBeanFactoryAware,ApplicationContextAwareetc.This method allows the bean instance to perform validation of its overall configuration and final initialization when all bean properties have been set.
- Specified by:
afterPropertiesSetin interfaceInitializingBean
build
public ContentNegotiationManager build()
Create and initialize aContentNegotiationManagerinstance.- Since:
- 5.0
getObject
@Nullable public ContentNegotiationManager getObject()
Description copied from interface:FactoryBeanReturn an instance (possibly shared or independent) of the object managed by this factory.As with a
BeanFactory, this allows support for both the Singleton and Prototype design pattern.If this FactoryBean is not fully initialized yet at the time of the call (for example because it is involved in a circular reference), throw a corresponding
FactoryBeanNotInitializedException.As of Spring 2.0, FactoryBeans are allowed to return
nullobjects. The factory will consider this as normal value to be used; it will not throw a FactoryBeanNotInitializedException in this case anymore. FactoryBean implementations are encouraged to throw FactoryBeanNotInitializedException themselves now, as appropriate.- Specified by:
getObjectin interfaceFactoryBean<ContentNegotiationManager>- Returns:
- an instance of the bean (can be
null) - See Also:
FactoryBeanNotInitializedException
getObjectType
public Class<?> getObjectType()
Description copied from interface:FactoryBeanReturn the type of object that this FactoryBean creates, ornullif not known in advance.This allows one to check for specific types of beans without instantiating objects, for example on autowiring.
In the case of implementations that are creating a singleton object, this method should try to avoid singleton creation as far as possible; it should rather estimate the type in advance. For prototypes, returning a meaningful type here is advisable too.
This method can be called before this FactoryBean has been fully initialized. It must not rely on state created during initialization; of course, it can still use such state if available.
NOTE: Autowiring will simply ignore FactoryBeans that return
nullhere. Therefore it is highly recommended to implement this method properly, using the current state of the FactoryBean.- Specified by:
getObjectTypein interfaceFactoryBean<ContentNegotiationManager>- Returns:
- the type of object that this FactoryBean creates, or
nullif not known at the time of the call - See Also:
ListableBeanFactory.getBeansOfType(java.lang.Class<T>)
isSingleton
public boolean isSingleton()
Description copied from interface:FactoryBeanIs the object managed by this factory a singleton? That is, willFactoryBean.getObject()always return the same object (a reference that can be cached)?NOTE: If a FactoryBean indicates to hold a singleton object, the object returned from
getObject()might get cached by the owning BeanFactory. Hence, do not returntrueunless the FactoryBean always exposes the same reference.The singleton status of the FactoryBean itself will generally be provided by the owning BeanFactory; usually, it has to be defined as singleton there.
NOTE: This method returning
falsedoes not necessarily indicate that returned objects are independent instances. An implementation of the extendedSmartFactoryBeaninterface may explicitly indicate independent instances through itsSmartFactoryBean.isPrototype()method. PlainFactoryBeanimplementations which do not implement this extended interface are simply assumed to always return independent instances if theisSingleton()implementation returnsfalse.The default implementation returns
true, since aFactoryBeantypically manages a singleton instance.- Specified by:
isSingletonin interfaceFactoryBean<ContentNegotiationManager>- Returns:
- whether the exposed object is a singleton
- See Also:
FactoryBean.getObject(),SmartFactoryBean.isPrototype()