This version is still in development and is not considered stable yet. For the latest stable version, please use Spring Security 6.3.2! |
WebFlux Security
Spring Security’s WebFlux support relies on a WebFilter
and works the same for Spring WebFlux and Spring WebFlux.Fn.
A few sample applications demonstrate the code:
-
Hello WebFlux hellowebflux
-
Hello WebFlux.Fn hellowebfluxfn
-
Hello WebFlux Method hellowebflux-method
Minimal WebFlux Security Configuration
The following listing shows a minimal WebFlux Security configuration:
-
Java
-
Kotlin
@Configuration
@EnableWebFluxSecurity
public class HelloWebfluxSecurityConfig {
@Bean
public MapReactiveUserDetailsService userDetailsService() {
UserDetails user = User.withDefaultPasswordEncoder()
.username("user")
.password("user")
.roles("USER")
.build();
return new MapReactiveUserDetailsService(user);
}
}
@Configuration
@EnableWebFluxSecurity
class HelloWebfluxSecurityConfig {
@Bean
fun userDetailsService(): ReactiveUserDetailsService {
val userDetails = User.withDefaultPasswordEncoder()
.username("user")
.password("user")
.roles("USER")
.build()
return MapReactiveUserDetailsService(userDetails)
}
}
This configuration provides form and HTTP basic authentication, sets up authorization to require an authenticated user for accessing any page, sets up a default login page and a default logout page, sets up security related HTTP headers, adds CSRF protection, and more.
Explicit WebFlux Security Configuration
The following page shows an explicit version of the minimal WebFlux Security configuration:
-
Java
-
Kotlin
@Configuration
@EnableWebFluxSecurity
public class HelloWebfluxSecurityConfig {
@Bean
public MapReactiveUserDetailsService userDetailsService() {
UserDetails user = User.withDefaultPasswordEncoder()
.username("user")
.password("user")
.roles("USER")
.build();
return new MapReactiveUserDetailsService(user);
}
@Bean
public SecurityWebFilterChain springSecurityFilterChain(ServerHttpSecurity http) {
http
.authorizeExchange(exchanges -> exchanges
.anyExchange().authenticated()
)
.httpBasic(withDefaults())
.formLogin(withDefaults());
return http.build();
}
}
import org.springframework.security.config.web.server.invoke
@Configuration
@EnableWebFluxSecurity
class HelloWebfluxSecurityConfig {
@Bean
fun userDetailsService(): ReactiveUserDetailsService {
val userDetails = User.withDefaultPasswordEncoder()
.username("user")
.password("user")
.roles("USER")
.build()
return MapReactiveUserDetailsService(userDetails)
}
@Bean
fun springSecurityFilterChain(http: ServerHttpSecurity): SecurityWebFilterChain {
return http {
authorizeExchange {
authorize(anyExchange, authenticated)
}
formLogin { }
httpBasic { }
}
}
}
Make sure to import the org.springframework.security.config.web.server.invoke function to enable the Kotlin DSL in your class, as the IDE will not always auto-import the method, causing compilation issues.
|
This configuration explicitly sets up all the same things as our minimal configuration. From here, you can more easily make changes to the defaults.
You can find more examples of explicit configuration in unit tests, by searching for EnableWebFluxSecurity
in the config/src/test/
directory.
Multiple Chains Support
You can configure multiple SecurityWebFilterChain
instances to separate configuration by RequestMatcher
instances.
For example, you can isolate configuration for URLs that start with /api
:
-
Java
-
Kotlin
@Configuration
@EnableWebFluxSecurity
static class MultiSecurityHttpConfig {
@Order(Ordered.HIGHEST_PRECEDENCE) (1)
@Bean
SecurityWebFilterChain apiHttpSecurity(ServerHttpSecurity http) {
http
.securityMatcher(new PathPatternParserServerWebExchangeMatcher("/api/**")) (2)
.authorizeExchange((exchanges) -> exchanges
.anyExchange().authenticated()
)
.oauth2ResourceServer(OAuth2ResourceServerSpec::jwt); (3)
return http.build();
}
@Bean
SecurityWebFilterChain webHttpSecurity(ServerHttpSecurity http) { (4)
http
.authorizeExchange((exchanges) -> exchanges
.anyExchange().authenticated()
)
.httpBasic(withDefaults()); (5)
return http.build();
}
@Bean
ReactiveUserDetailsService userDetailsService() {
return new MapReactiveUserDetailsService(
PasswordEncodedUser.user(), PasswordEncodedUser.admin());
}
}
import org.springframework.security.config.web.server.invoke
@Configuration
@EnableWebFluxSecurity
open class MultiSecurityHttpConfig {
@Order(Ordered.HIGHEST_PRECEDENCE) (1)
@Bean
open fun apiHttpSecurity(http: ServerHttpSecurity): SecurityWebFilterChain {
return http {
securityMatcher(PathPatternParserServerWebExchangeMatcher("/api/**")) (2)
authorizeExchange {
authorize(anyExchange, authenticated)
}
oauth2ResourceServer {
jwt { } (3)
}
}
}
@Bean
open fun webHttpSecurity(http: ServerHttpSecurity): SecurityWebFilterChain { (4)
return http {
authorizeExchange {
authorize(anyExchange, authenticated)
}
httpBasic { } (5)
}
}
@Bean
open fun userDetailsService(): ReactiveUserDetailsService {
return MapReactiveUserDetailsService(
PasswordEncodedUser.user(), PasswordEncodedUser.admin()
)
}
}
1 | Configure a SecurityWebFilterChain with an @Order to specify which SecurityWebFilterChain Spring Security should consider first |
2 | Use PathPatternParserServerWebExchangeMatcher to state that this SecurityWebFilterChain will only apply to URL paths that start with /api/ |
3 | Specify the authentication mechanisms that will be used for /api/** endpoints |
4 | Create another instance of SecurityWebFilterChain with lower precedence to match all other URLs |
5 | Specify the authentication mechanisms that will be used for the rest of the application |
Spring Security selects one SecurityWebFilterChain
@Bean
for each request.
It matches the requests in order by the securityMatcher
definition.
In this case, that means that, if the URL path starts with /api
, Spring Security uses apiHttpSecurity
.
If the URL does not start with /api
, Spring Security defaults to webHttpSecurity
, which has an implied securityMatcher
that matches any request.