EnableWebFluxSecurity uses PasswordEncoder Bean

config/src/main/java/org/springframework/security/config/annotation/web/reactive/HttpSecurityConfiguration.java

@@ -26,6 +26,7 @@ import org.springframework.security.authentication.ReactiveAuthenticationManager
 import org.springframework.security.authentication.UserDetailsRepositoryAuthenticationManager;
 import org.springframework.security.config.web.server.HttpSecurity;
 import org.springframework.security.core.userdetails.UserDetailsRepository;
+import org.springframework.security.crypto.password.PasswordEncoder;
 import org.springframework.security.web.reactive.result.method.annotation.AuthenticationPrincipalArgumentResolver;
 import org.springframework.security.web.server.context.WebSessionSecurityContextRepository;
 import org.springframework.web.reactive.config.WebFluxConfigurer;
@@ -50,6 +51,9 @@ public class HttpSecurityConfiguration implements WebFluxConfigurer {
 	@Autowired(required = false)
 	private UserDetailsRepository userDetailsRepository;
 
+	@Autowired(required = false)
+	private PasswordEncoder passwordEncoder;
+
 	@Override
 	public void configureArgumentResolvers(ArgumentResolverConfigurer configurer) {
 		configurer.addCustomResolver(authenticationPrincipalArgumentResolver());
@@ -57,7 +61,7 @@ public class HttpSecurityConfiguration implements WebFluxConfigurer {
 
 	@Bean
 	public AuthenticationPrincipalArgumentResolver authenticationPrincipalArgumentResolver() {
-		return new AuthenticationPrincipalArgumentResolver(adapterRegistry);
+		return new AuthenticationPrincipalArgumentResolver(this.adapterRegistry);
 	}
 
 	@Bean(HTTPSECURITY_BEAN_NAME)
@@ -71,11 +75,16 @@ public class HttpSecurityConfiguration implements WebFluxConfigurer {
 	}
 
 	private ReactiveAuthenticationManager authenticationManager() {
-		if(authenticationManager != null) {
-			return authenticationManager;
+		if(this.authenticationManager != null) {
+			return this.authenticationManager;
 		}
-		if(userDetailsRepository != null) {
-			return new UserDetailsRepositoryAuthenticationManager(userDetailsRepository);
+		if(this.userDetailsRepository != null) {
+			UserDetailsRepositoryAuthenticationManager manager =
+				new UserDetailsRepositoryAuthenticationManager(this.userDetailsRepository);
+			if(this.passwordEncoder != null) {
+				manager.setPasswordEncoder(this.passwordEncoder);
+			}
+			return manager;
 		}
 		return null;
 	}

config/src/test/java/org/springframework/security/config/annotation/web/reactive/EnableWebFluxSecurityTests.java

@@ -33,6 +33,8 @@ import org.springframework.security.core.Authentication;
 import org.springframework.security.core.userdetails.MapUserDetailsRepository;
 import org.springframework.security.core.userdetails.User;
 import org.springframework.security.core.userdetails.UserDetailsRepository;
+import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
+import org.springframework.security.crypto.password.PasswordEncoder;
 import org.springframework.security.test.web.reactive.server.WebTestClientBuilder;
 import org.springframework.security.web.server.SecurityWebFilterChain;
 import org.springframework.security.web.server.WebFilterChainFilter;
@@ -127,6 +129,51 @@ public class EnableWebFluxSecurityTests {
 		}
 	}
 
+	@RunWith(SpringRunner.class)
+	public static class CustomPasswordEncoder {
+		@Autowired
+		WebFilterChainFilter springSecurityFilterChain;
+
+		@Test
+		public void passwordEncoderBeanIsUsed() {
+			WebTestClient client = WebTestClientBuilder.bindToWebFilters(
+				springSecurityFilterChain,
+				(exchange,chain) ->
+					Mono.currentContext()
+						.flatMap( c -> c.<Mono<Principal>>get(Authentication.class))
+						.flatMap( principal -> exchange.getResponse()
+							.writeWith(Mono.just(toDataBuffer(principal.getName()))))
+			)
+				.filter(basicAuthentication())
+				.build();
+
+			client
+				.get()
+				.uri("/")
+				.attributes(basicAuthenticationCredentials("user","password"))
+				.exchange()
+				.expectStatus().isOk()
+				.expectBody(String.class).consumeWith( result -> assertThat(result.getResponseBody()).isEqualTo("user"));
+		}
+
+		@EnableWebFluxSecurity
+		static class Config {
+			@Bean
+			public UserDetailsRepository userDetailsRepository(PasswordEncoder encoder) {
+				return new MapUserDetailsRepository(User.withUsername("user")
+					.password(encoder.encode("password"))
+					.roles("USER")
+					.build()
+				);
+			}
+
+			@Bean
+			public PasswordEncoder passwordEncoder() {
+				return new BCryptPasswordEncoder();
+			}
+		}
+	}
+
 	@RunWith(SpringRunner.class)
 	public static class MultiHttpSecurity {
 		@Autowired