CorsWebFilter (Spring Framework 5.2.12.RELEASE API)

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

All Methods Instance Methods Concrete Methods
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 Detail
  - 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 Detail
  - 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