org.springframework.web.reactive.handler

Class AbstractHandlerMapping

java.lang.Object

org.springframework.context.support.ApplicationObjectSupport

org.springframework.web.reactive.handler.AbstractHandlerMapping

All Implemented Interfaces:

Aware, BeanNameAware, ApplicationContextAware, Ordered, HandlerMapping

Direct Known Subclasses:

AbstractHandlerMethodMapping, AbstractUrlHandlerMapping, RouterFunctionMapping

public abstract class AbstractHandlerMapping
extends ApplicationObjectSupport
implements HandlerMapping, Ordered, BeanNameAware

Abstract base class for HandlerMapping implementations.

Since:

5.0

Author:

Rossen Stoyanchev, Juergen Hoeller, Brian Clozel

Field Summary

Fields

Modifier and Type	Field and Description
protected Log	mappingsLogger Dedicated "hidden" logger for request mappings.

Fields inherited from class org.springframework.context.support.ApplicationObjectSupport

logger

Fields inherited from interface org.springframework.web.reactive.HandlerMapping

BEST_MATCHING_HANDLER_ATTRIBUTE, BEST_MATCHING_PATTERN_ATTRIBUTE, MATRIX_VARIABLES_ATTRIBUTE, PATH_WITHIN_HANDLER_MAPPING_ATTRIBUTE, PRODUCIBLE_MEDIA_TYPES_ATTRIBUTE, URI_TEMPLATE_VARIABLES_ATTRIBUTE

Fields inherited from interface org.springframework.core.Ordered

HIGHEST_PRECEDENCE, LOWEST_PRECEDENCE

Constructor Summary

Constructors

Constructor and Description
AbstractHandlerMapping()

Method Summary

Modifier and Type	Method and Description
protected String	formatMappingName()
protected CorsConfiguration	getCorsConfiguration(Object handler, ServerWebExchange exchange) Retrieve the CORS configuration for the given handler.
CorsProcessor	getCorsProcessor() Return the configured CorsProcessor.
reactor.core.publisher.Mono<Object>	getHandler(ServerWebExchange exchange) Return a handler for this request.
protected abstract reactor.core.publisher.Mono<?>	getHandlerInternal(ServerWebExchange exchange) Look up a handler for the given request, returning an empty Mono if no specific one is found.
int	getOrder() Get the order value of this object.
PathPatternParser	getPathPatternParser() Return the PathPatternParser instance that is used for CORS configuration checks.
protected boolean	hasCorsConfigurationSource(Object handler) Return true if there is a CorsConfigurationSource for this handler.
void	setBeanName(String name) Set the name of the bean in the bean factory that created this bean.
void	setCorsConfigurations(Map<String,CorsConfiguration> corsConfigurations) Set the "global" CORS configurations based on URL patterns.
void	setCorsConfigurationSource(CorsConfigurationSource corsConfigurationSource) Set the "global" CORS configuration source.
void	setCorsProcessor(CorsProcessor corsProcessor) Configure a custom CorsProcessor to use to apply the matched CorsConfiguration for a request.
void	setOrder(int order) Specify the order value for this HandlerMapping bean.
void	setUseCaseSensitiveMatch(boolean caseSensitiveMatch) Shortcut method for setting the same property on the underlying pattern parser in use.
void	setUseTrailingSlashMatch(boolean trailingSlashMatch) Shortcut method for setting the same property on the underlying pattern parser in use.

Methods inherited from class org.springframework.context.support.ApplicationObjectSupport

getApplicationContext, getMessageSourceAccessor, initApplicationContext, initApplicationContext, isContextRequired, obtainApplicationContext, requiredContextClass, setApplicationContext

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

mappingsLogger

protected final Log mappingsLogger

Dedicated "hidden" logger for request mappings.

Constructor Detail

AbstractHandlerMapping

public AbstractHandlerMapping()

Method Detail

setUseCaseSensitiveMatch

public void setUseCaseSensitiveMatch(boolean caseSensitiveMatch)

Shortcut method for setting the same property on the underlying pattern parser in use. For more details see:

• getPathPatternParser() -- the underlying pattern parser
• PathPatternParser.setCaseSensitive(boolean) -- the case sensitive slash option, including its default value.

Note: aside from

setUseTrailingSlashMatch

public void setUseTrailingSlashMatch(boolean trailingSlashMatch)

Shortcut method for setting the same property on the underlying pattern parser in use. For more details see:

• getPathPatternParser() -- the underlying pattern parser
• PathPatternParser.setMatchOptionalTrailingSeparator(boolean) -- the trailing slash option, including its default value.

getPathPatternParser

public PathPatternParser getPathPatternParser()

Return the PathPatternParser instance that is used for CORS configuration checks. Subclasses can also use this pattern parser for their own request mapping purposes.

setCorsConfigurations

public void setCorsConfigurations(Map<String,CorsConfiguration> corsConfigurations)

Set the "global" CORS configurations based on URL patterns. By default, the first matching URL pattern is combined with handler-level CORS configuration if any.

See Also:

setCorsConfigurationSource(CorsConfigurationSource)

setCorsConfigurationSource

public void setCorsConfigurationSource(CorsConfigurationSource corsConfigurationSource)

Set the "global" CORS configuration source. By default, the first matching URL pattern is combined with the CORS configuration for the handler, if any.

Since:

5.1

See Also:

setCorsConfigurations(Map)

setCorsProcessor

public void setCorsProcessor(CorsProcessor corsProcessor)

Configure a custom CorsProcessor to use to apply the matched CorsConfiguration for a request.

By default an instance of DefaultCorsProcessor is used.

getCorsProcessor

public CorsProcessor getCorsProcessor()

Return the configured CorsProcessor.

setOrder

public void setOrder(int order)

Specify the order value for this HandlerMapping bean.

The default value is Ordered.LOWEST_PRECEDENCE, meaning non-ordered.

See Also:

Ordered.getOrder()

getOrder

public int getOrder()

Description copied from interface: Ordered

Get the order value of this object.

Higher values are interpreted as lower priority. As a consequence, the object with the lowest value has the highest priority (somewhat analogous to Servlet load-on-startup values).

Same order values will result in arbitrary sort positions for the affected objects.

Specified by:

getOrder in interface Ordered

Returns:

the order value

See Also:

Ordered.HIGHEST_PRECEDENCE, Ordered.LOWEST_PRECEDENCE

setBeanName

public void setBeanName(String name)

Description copied from interface: BeanNameAware

Set the name of the bean in the bean factory that created this bean.

Invoked after population of normal bean properties but before an init callback such as InitializingBean.afterPropertiesSet() or a custom init-method.

Specified by:

setBeanName in interface BeanNameAware

Parameters:

name - the name of the bean in the factory. Note that this name is the actual bean name used in the factory, which may differ from the originally specified name: in particular for inner bean names, the actual bean name might have been made unique through appending "#..." suffixes. Use the BeanFactoryUtils.originalBeanName(String) method to extract the original bean name (without suffix), if desired.

formatMappingName

protected String formatMappingName()

getHandler

public reactor.core.publisher.Mono<Object> getHandler(ServerWebExchange exchange)

Description copied from interface: HandlerMapping

Return a handler for this request.

Before returning a handler, an implementing method should check for CORS configuration associated with the handler, apply validation checks based on it, and update the response accordingly. For pre-flight requests, the same should be done based on the handler matching to the expected actual request.

Specified by:

getHandler in interface HandlerMapping

Parameters:

exchange - current server exchange

Returns:

a Mono that emits one value or none in case the request cannot be resolved to a handler

getHandlerInternal

protected abstract reactor.core.publisher.Mono<?> getHandlerInternal(ServerWebExchange exchange)

Look up a handler for the given request, returning an empty Mono if no specific one is found. This method is called by getHandler(org.springframework.web.server.ServerWebExchange).

On CORS pre-flight requests this method should return a match not for the pre-flight request but for the expected actual request based on the URL path, the HTTP methods from the "Access-Control-Request-Method" header, and the headers from the "Access-Control-Request-Headers" header.

Parameters:

exchange - current exchange

Returns:

Mono for the matching handler, if any

hasCorsConfigurationSource

protected boolean hasCorsConfigurationSource(Object handler)

Return true if there is a CorsConfigurationSource for this handler.

Since:

5.2

getCorsConfiguration

@Nullable
protected CorsConfiguration getCorsConfiguration(Object handler,
                                                           ServerWebExchange exchange)

Retrieve the CORS configuration for the given handler.

Parameters:

handler - the handler to check (never null)

exchange - the current exchange

Returns:

the CORS configuration for the handler, or null if none