Package org.springframework.web.cors.reactive

Class CorsWebFilter

java.lang.Object

org.springframework.web.cors.reactive.CorsWebFilter

All Implemented Interfaces:

WebFilter

public class CorsWebFilter
extends Object
implements WebFilter

WebFilter that handles CORS preflight requests and intercepts CORS simple and actual requests thanks to a CorsProcessor implementation (DefaultCorsProcessor by default) in order to add the relevant CORS response headers (like Access-Control-Allow-Origin) using the provided CorsConfigurationSource (for example an UrlBasedCorsConfigurationSource instance.

This is an alternative to Spring WebFlux Java config CORS configuration, mostly useful for applications using the functional API.

Since:

5.0

Author:

Sebastien Deleuze

See Also:

• CORS W3C recommendation

Constructor Summary

Constructors

Constructor	Description
CorsWebFilter(CorsConfigurationSource configSource)	Constructor accepting a CorsConfigurationSource used by the filter to find the CorsConfiguration to use for each incoming request.
CorsWebFilter(CorsConfigurationSource configSource, CorsProcessor processor)	Constructor accepting a CorsConfigurationSource used by the filter to find the CorsConfiguration to use for each incoming request and a custom CorsProcessor to use to apply the matched CorsConfiguration for a request.

Method Summary

Modifier and Type	Method	Description
reactor.core.publisher.Mono<Void>	filter(ServerWebExchange exchange, WebFilterChain chain)	Process the Web request and (optionally) delegate to the next WebFilter through the given WebFilterChain.

Methods inherited from class java.lang.Object

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

Constructor Details

CorsWebFilter

public CorsWebFilter(CorsConfigurationSource configSource)

Constructor accepting a CorsConfigurationSource used by the filter to find the CorsConfiguration to use for each incoming request.

See Also:

• UrlBasedCorsConfigurationSource

CorsWebFilter

public CorsWebFilter(CorsConfigurationSource configSource,
 CorsProcessor processor)

Constructor accepting a CorsConfigurationSource used by the filter to find the CorsConfiguration to use for each incoming request and a custom CorsProcessor to use to apply the matched CorsConfiguration for a request.

See Also:

• UrlBasedCorsConfigurationSource

Method Details

filter

public reactor.core.publisher.Mono<Void> filter(ServerWebExchange exchange,
 WebFilterChain chain)

Description copied from interface: WebFilter

Process the Web request and (optionally) delegate to the next WebFilter through the given WebFilterChain.

Specified by:

filter in interface WebFilter

Parameters:

exchange - the current server exchange

chain - provides a way to delegate to the next filter

Returns:

Mono<Void> to indicate when request processing is complete