Spring Security

如果 Spring Security 在類路徑中，則 web 應用預設是安全的。Spring Boot 依賴 Spring Security 的內容協商策略來決定是使用 httpBasic 還是 formLogin。要在 web 應用中新增方法級別的安全性，你還可以使用你期望的設定新增 @EnableMethodSecurity。更多資訊可以在 Spring Security 參考指南中找到。

預設的 UserDetailsService 有一個使用者。使用者名稱為 user，密碼是隨機生成的，在應用啟動時會以 WARN 級別打印出來，如下例所示

Using generated security password: 78fa095d-3f4c-48b1-ad50-e24c31d5cf35

This generated password is for development use only. Your security configuration must be updated before running your application in production.

如果你精細調整了日誌配置，請確保 org.springframework.boot.autoconfigure.security 分類設定為記錄 WARN 級別的訊息。否則，預設密碼將不會列印。

你可以透過提供 spring.security.user.name 和 spring.security.user.password 來改變使用者名稱和密碼。

在 web 應用中預設提供的基本特性包括

一個帶記憶體儲存的 UserDetailsService (或者如果是 WebFlux 應用則是 ReactiveUserDetailsService) bean，包含一個擁有生成密碼的單一使用者（使用者屬性參見 SecurityProperties.User）。
整個應用（包括如果 Actuator 在類路徑中則涵蓋 Actuator 端點）的基於表單的登入或 HTTP Basic 安全性（取決於請求中的 Accept 頭）。
一個用於釋出認證事件的 DefaultAuthenticationEventPublisher。

你可以透過新增一個 bean 來提供一個不同的 AuthenticationEventPublisher。

MVC 安全

預設安全配置在 SecurityAutoConfiguration 和 UserDetailsServiceAutoConfiguration 中實現。SecurityAutoConfiguration 匯入 SpringBootWebSecurityConfiguration 用於 web 安全，UserDetailsServiceAutoConfiguration 用於認證。

要完全關閉預設的 web 應用安全配置，包括 Actuator 安全，或結合多個 Spring Security 元件（如 OAuth2 Client 和 Resource Server），請新增一個 SecurityFilterChain 型別的 bean（這樣做不會停用 UserDetailsService 配置）。要同時關閉 UserDetailsService 配置，請新增一個 UserDetailsService、AuthenticationProvider 或 AuthenticationManager 型別的 bean。

當以下任何 Spring Security 模組在類路徑中時，UserDetailsService 的自動配置也會退出：

spring-security-oauth2-client
spring-security-oauth2-resource-server
spring-security-saml2-service-provider

要在這些依賴之外使用 UserDetailsService，請定義你自己的 InMemoryUserDetailsManager bean。

可以透過新增自定義的 SecurityFilterChain bean 來覆蓋訪問規則。Spring Boot 提供了便利方法，可用於覆蓋 Actuator 端點和靜態資源的訪問規則。EndpointRequest 可用於建立一個基於 management.endpoints.web.base-path 屬性的 RequestMatcher。PathRequest 可用於為常用位置的資源建立一個 RequestMatcher。

WebFlux 安全

類似於 Spring MVC 應用，你可以透過新增 spring-boot-starter-security 依賴來保護你的 WebFlux 應用。預設的安全配置在 ReactiveSecurityAutoConfiguration 和 ReactiveUserDetailsServiceAutoConfiguration 中實現。ReactiveSecurityAutoConfiguration 匯入 WebFluxSecurityConfiguration 用於 web 安全，UserDetailsServiceAutoConfiguration 用於認證。除了響應式 web 應用外，當使用 RSocket 時，後者也會自動配置。

要完全關閉預設的 web 應用安全配置，包括 Actuator 安全，請新增一個 WebFilterChainProxy 型別的 bean（這樣做不會停用 ReactiveUserDetailsService 配置）。要同時關閉 ReactiveUserDetailsService 配置，請新增一個 ReactiveUserDetailsService 或 ReactiveAuthenticationManager 型別的 bean。

當以下任何 Spring Security 模組在類路徑中時，自動配置也會退出：

spring-security-oauth2-client
spring-security-oauth2-resource-server

要在這些依賴之外使用 ReactiveUserDetailsService，請定義你自己的 MapReactiveUserDetailsService bean。

可以透過新增自定義的 SecurityWebFilterChain bean 來配置訪問規則以及使用多個 Spring Security 元件（如 OAuth 2 Client 和 Resource Server）。Spring Boot 提供了便利方法，可用於覆蓋 Actuator 端點和靜態資源的訪問規則。EndpointRequest 可用於建立一個基於 management.endpoints.web.base-path 屬性的 ServerWebExchangeMatcher。

PathRequest 可用於為常用位置的資源建立一個 ServerWebExchangeMatcher。

例如，你可以透過新增類似如下配置來定製你的安全配置

Java
Kotlin

import org.springframework.boot.autoconfigure.security.reactive.PathRequest;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.config.web.server.ServerHttpSecurity;
import org.springframework.security.web.server.SecurityWebFilterChain;

import static org.springframework.security.config.Customizer.withDefaults;

@Configuration(proxyBeanMethods = false)
public class MyWebFluxSecurityConfiguration {

	@Bean
	public SecurityWebFilterChain springSecurityFilterChain(ServerHttpSecurity http) {
		http.authorizeExchange((exchange) -> {
			exchange.matchers(PathRequest.toStaticResources().atCommonLocations()).permitAll();
			exchange.pathMatchers("/foo", "/bar").authenticated();
		});
		http.formLogin(withDefaults());
		return http.build();
	}

}

import org.springframework.boot.autoconfigure.security.reactive.PathRequest
import org.springframework.context.annotation.Bean
import org.springframework.context.annotation.Configuration
import org.springframework.security.config.Customizer.withDefaults
import org.springframework.security.config.web.server.ServerHttpSecurity
import org.springframework.security.web.server.SecurityWebFilterChain

@Configuration(proxyBeanMethods = false)
class MyWebFluxSecurityConfiguration {

	@Bean
	fun springSecurityFilterChain(http: ServerHttpSecurity): SecurityWebFilterChain {
		http.authorizeExchange { spec ->
			spec.matchers(PathRequest.toStaticResources().atCommonLocations()).permitAll()
			spec.pathMatchers("/foo", "/bar").authenticated()
		}
		http.formLogin(withDefaults())
		return http.build()
	}

}

OAuth2

OAuth2 是一個廣泛使用的授權框架，Spring 提供了支援。

客戶端

如果你的類路徑中有 spring-security-oauth2-client，你可以利用一些自動配置來設定 OAuth2/Open ID Connect 客戶端。此配置使用 OAuth2ClientProperties 下的屬性。這些屬性適用於 servlet 應用和響應式應用。

你可以在 spring.security.oauth2.client 字首下注冊多個 OAuth2 客戶端和提供者，如下例所示

Properties 檔案
YAML 檔案

spring.security.oauth2.client.registration.my-login-client.client-id=abcd
spring.security.oauth2.client.registration.my-login-client.client-secret=password
spring.security.oauth2.client.registration.my-login-client.client-name=Client for OpenID Connect
spring.security.oauth2.client.registration.my-login-client.provider=my-oauth-provider
spring.security.oauth2.client.registration.my-login-client.scope=openid,profile,email,phone,address
spring.security.oauth2.client.registration.my-login-client.redirect-uri={baseUrl}/login/oauth2/code/{registrationId}
spring.security.oauth2.client.registration.my-login-client.client-authentication-method=client_secret_basic
spring.security.oauth2.client.registration.my-login-client.authorization-grant-type=authorization_code
spring.security.oauth2.client.registration.my-client-1.client-id=abcd
spring.security.oauth2.client.registration.my-client-1.client-secret=password
spring.security.oauth2.client.registration.my-client-1.client-name=Client for user scope
spring.security.oauth2.client.registration.my-client-1.provider=my-oauth-provider
spring.security.oauth2.client.registration.my-client-1.scope=user
spring.security.oauth2.client.registration.my-client-1.redirect-uri={baseUrl}/authorized/user
spring.security.oauth2.client.registration.my-client-1.client-authentication-method=client_secret_basic
spring.security.oauth2.client.registration.my-client-1.authorization-grant-type=authorization_code
spring.security.oauth2.client.registration.my-client-2.client-id=abcd
spring.security.oauth2.client.registration.my-client-2.client-secret=password
spring.security.oauth2.client.registration.my-client-2.client-name=Client for email scope
spring.security.oauth2.client.registration.my-client-2.provider=my-oauth-provider
spring.security.oauth2.client.registration.my-client-2.scope=email
spring.security.oauth2.client.registration.my-client-2.redirect-uri={baseUrl}/authorized/email
spring.security.oauth2.client.registration.my-client-2.client-authentication-method=client_secret_basic
spring.security.oauth2.client.registration.my-client-2.authorization-grant-type=authorization_code
spring.security.oauth2.client.provider.my-oauth-provider.authorization-uri=https://my-auth-server.com/oauth2/authorize
spring.security.oauth2.client.provider.my-oauth-provider.token-uri=https://my-auth-server.com/oauth2/token
spring.security.oauth2.client.provider.my-oauth-provider.user-info-uri=https://my-auth-server.com/userinfo
spring.security.oauth2.client.provider.my-oauth-provider.user-info-authentication-method=header
spring.security.oauth2.client.provider.my-oauth-provider.jwk-set-uri=https://my-auth-server.com/oauth2/jwks
spring.security.oauth2.client.provider.my-oauth-provider.user-name-attribute=name

spring:
  security:
    oauth2:
      client:
        registration:
          my-login-client:
            client-id: "abcd"
            client-secret: "password"
            client-name: "Client for OpenID Connect"
            provider: "my-oauth-provider"
            scope: "openid,profile,email,phone,address"
            redirect-uri: "{baseUrl}/login/oauth2/code/{registrationId}"
            client-authentication-method: "client_secret_basic"
            authorization-grant-type: "authorization_code"

          my-client-1:
            client-id: "abcd"
            client-secret: "password"
            client-name: "Client for user scope"
            provider: "my-oauth-provider"
            scope: "user"
            redirect-uri: "{baseUrl}/authorized/user"
            client-authentication-method: "client_secret_basic"
            authorization-grant-type: "authorization_code"

          my-client-2:
            client-id: "abcd"
            client-secret: "password"
            client-name: "Client for email scope"
            provider: "my-oauth-provider"
            scope: "email"
            redirect-uri: "{baseUrl}/authorized/email"
            client-authentication-method: "client_secret_basic"
            authorization-grant-type: "authorization_code"

        provider:
          my-oauth-provider:
            authorization-uri: "https://my-auth-server.com/oauth2/authorize"
            token-uri: "https://my-auth-server.com/oauth2/token"
            user-info-uri: "https://my-auth-server.com/userinfo"
            user-info-authentication-method: "header"
            jwk-set-uri: "https://my-auth-server.com/oauth2/jwks"
            user-name-attribute: "name"

對於支援 OpenID Connect discovery 的 OpenID Connect 提供者，配置可以進一步簡化。提供者需要配置 issuer-uri，這是它聲稱作為其 Issuer Identifier 的 URI。例如，如果提供的 issuer-uri 是 "https://example.com"，則會向 "https://example.com/.well-known/openid-configuration" 傳送 "OpenID Provider Configuration Request"。結果應為 "OpenID Provider Configuration Response"。以下示例展示瞭如何使用 issuer-uri 配置 OpenID Connect 提供者

Properties 檔案
YAML 檔案

spring.security.oauth2.client.provider.oidc-provider.issuer-uri=https://dev-123456.oktapreview.com/oauth2/default/

spring:
  security:
    oauth2:
      client:
        provider:
          oidc-provider:
            issuer-uri: "https://dev-123456.oktapreview.com/oauth2/default/"

預設情況下，Spring Security 的 OAuth2LoginAuthenticationFilter 只處理匹配 /login/oauth2/code/* 的 URL。如果你想定製 redirect-uri 使用不同的模式，你需要提供配置來處理該自定義模式。例如，對於 servlet 應用，你可以新增一個類似於以下配置的你自己的 SecurityFilterChain

Java
Kotlin

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.web.SecurityFilterChain;

@Configuration(proxyBeanMethods = false)
@EnableWebSecurity
public class MyOAuthClientConfiguration {

	@Bean
	public SecurityFilterChain securityFilterChain(HttpSecurity http) throws Exception {
		http
			.authorizeHttpRequests((requests) -> requests
				.anyRequest().authenticated()
			)
			.oauth2Login((login) -> login
				.redirectionEndpoint((endpoint) -> endpoint
					.baseUri("/login/oauth2/callback/*")
				)
			);
		return http.build();
	}

}

import org.springframework.context.annotation.Bean
import org.springframework.context.annotation.Configuration
import org.springframework.security.config.annotation.web.builders.HttpSecurity
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity
import org.springframework.security.config.annotation.web.invoke
import org.springframework.security.web.SecurityFilterChain

@Configuration(proxyBeanMethods = false)
@EnableWebSecurity
open class MyOAuthClientConfiguration {

	@Bean
	open fun securityFilterChain(http: HttpSecurity): SecurityFilterChain {
		http {
			authorizeHttpRequests {
				authorize(anyRequest, authenticated)
			}
			oauth2Login {
				redirectionEndpoint {
					baseUri = "/login/oauth2/callback/*"
				}
			}
		}
		return http.build()
	}

}

Spring Boot 自動配置一個 InMemoryOAuth2AuthorizedClientService，Spring Security 使用它來管理客戶端註冊。InMemoryOAuth2AuthorizedClientService 功能有限，我們建議僅在開發環境中使用它。對於生產環境，請考慮使用 JdbcOAuth2AuthorizedClientService 或建立你自己的 OAuth2AuthorizedClientService 實現。

常用提供者的 OAuth2 客戶端註冊

對於常用的 OAuth2 和 OpenID 提供者，包括 Google, Github, Facebook 和 Okta，我們提供了一組預設提供者配置（分別為 google, github, facebook 和 okta）。

如果你不需要定製這些提供者，可以將 provider 屬性設定為需要推斷預設配置的提供者。此外，如果客戶端註冊的 key 與預設支援的提供者匹配，Spring Boot 也會推斷出來。

換句話說，以下示例中的兩個配置都使用 Google 提供者

Properties 檔案
YAML 檔案

spring.security.oauth2.client.registration.my-client.client-id=abcd
spring.security.oauth2.client.registration.my-client.client-secret=password
spring.security.oauth2.client.registration.my-client.provider=google
spring.security.oauth2.client.registration.google.client-id=abcd
spring.security.oauth2.client.registration.google.client-secret=password

spring:
  security:
    oauth2:
      client:
        registration:
          my-client:
            client-id: "abcd"
            client-secret: "password"
            provider: "google"
          google:
            client-id: "abcd"
            client-secret: "password"

資源伺服器

如果你的類路徑中有 spring-security-oauth2-resource-server，Spring Boot 可以設定一個 OAuth2 資源伺服器。對於 JWT 配置，需要指定 JWK Set URI 或 OIDC Issuer URI，如下例所示

Properties 檔案
YAML 檔案

spring.security.oauth2.resourceserver.jwt.jwk-set-uri=https://example.com/oauth2/default/v1/keys

spring:
  security:
    oauth2:
      resourceserver:
        jwt:
          jwk-set-uri: "https://example.com/oauth2/default/v1/keys"

Properties 檔案
YAML 檔案

spring.security.oauth2.resourceserver.jwt.issuer-uri=https://dev-123456.oktapreview.com/oauth2/default/

spring:
  security:
    oauth2:
      resourceserver:
        jwt:
          issuer-uri: "https://dev-123456.oktapreview.com/oauth2/default/"

如果授權伺服器不支援 JWK Set URI，你可以使用用於驗證 JWT 簽名的公鑰來配置資源伺服器。這可以透過 spring.security.oauth2.resourceserver.jwt.public-key-location 屬性來完成，其值需要指向一個包含 PEM 編碼的 x509 格式公鑰的檔案。

spring.security.oauth2.resourceserver.jwt.audiences 屬性可用於指定 JWT 中 aud claim 的期望值。例如，要求 JWT 包含一個值為 my-audience 的 aud claim

Properties 檔案
YAML 檔案

spring.security.oauth2.resourceserver.jwt.audiences[0]=my-audience

spring:
  security:
    oauth2:
      resourceserver:
        jwt:
          audiences:
            - "my-audience"

這些屬性同樣適用於 servlet 應用和響應式應用。或者，你可以為 servlet 應用定義自己的 JwtDecoder bean，或為響應式應用定義一個 ReactiveJwtDecoder。

如果使用不透明令牌 (opaque tokens) 而非 JWT，你可以配置以下屬性透過內省 (introspection) 來驗證令牌

Properties 檔案
YAML 檔案

spring.security.oauth2.resourceserver.opaquetoken.introspection-uri=https://example.com/check-token
spring.security.oauth2.resourceserver.opaquetoken.client-id=my-client-id
spring.security.oauth2.resourceserver.opaquetoken.client-secret=my-client-secret

spring:
  security:
    oauth2:
      resourceserver:
        opaquetoken:
          introspection-uri: "https://example.com/check-token"
          client-id: "my-client-id"
          client-secret: "my-client-secret"

同樣，這些屬性適用於 servlet 應用和響應式應用。或者，你可以為 servlet 應用定義自己的 OpaqueTokenIntrospector bean，或為響應式應用定義一個 ReactiveOpaqueTokenIntrospector。

授權伺服器

如果你的類路徑中有 spring-security-oauth2-authorization-server，你可以利用一些自動配置來設定一個基於 Servlet 的 OAuth2 授權伺服器。

你可以在 spring.security.oauth2.authorizationserver.client 字首下注冊多個 OAuth2 客戶端，如下例所示

Properties 檔案
YAML 檔案

spring.security.oauth2.authorizationserver.client.my-client-1.registration.client-id=abcd
spring.security.oauth2.authorizationserver.client.my-client-1.registration.client-secret={noop}secret1
spring.security.oauth2.authorizationserver.client.my-client-1.registration.client-authentication-methods[0]=client_secret_basic
spring.security.oauth2.authorizationserver.client.my-client-1.registration.authorization-grant-types[0]=authorization_code
spring.security.oauth2.authorizationserver.client.my-client-1.registration.authorization-grant-types[1]=refresh_token
spring.security.oauth2.authorizationserver.client.my-client-1.registration.redirect-uris[0]=https://my-client-1.com/login/oauth2/code/abcd
spring.security.oauth2.authorizationserver.client.my-client-1.registration.redirect-uris[1]=https://my-client-1.com/authorized
spring.security.oauth2.authorizationserver.client.my-client-1.registration.scopes[0]=openid
spring.security.oauth2.authorizationserver.client.my-client-1.registration.scopes[1]=profile
spring.security.oauth2.authorizationserver.client.my-client-1.registration.scopes[2]=email
spring.security.oauth2.authorizationserver.client.my-client-1.registration.scopes[3]=phone
spring.security.oauth2.authorizationserver.client.my-client-1.registration.scopes[4]=address
spring.security.oauth2.authorizationserver.client.my-client-1.require-authorization-consent=true
spring.security.oauth2.authorizationserver.client.my-client-1.token.authorization-code-time-to-live=5m
spring.security.oauth2.authorizationserver.client.my-client-1.token.access-token-time-to-live=10m
spring.security.oauth2.authorizationserver.client.my-client-1.token.access-token-format=reference
spring.security.oauth2.authorizationserver.client.my-client-1.token.reuse-refresh-tokens=false
spring.security.oauth2.authorizationserver.client.my-client-1.token.refresh-token-time-to-live=30m
spring.security.oauth2.authorizationserver.client.my-client-2.registration.client-id=efgh
spring.security.oauth2.authorizationserver.client.my-client-2.registration.client-secret={noop}secret2
spring.security.oauth2.authorizationserver.client.my-client-2.registration.client-authentication-methods[0]=client_secret_jwt
spring.security.oauth2.authorizationserver.client.my-client-2.registration.authorization-grant-types[0]=client_credentials
spring.security.oauth2.authorizationserver.client.my-client-2.registration.scopes[0]=user.read
spring.security.oauth2.authorizationserver.client.my-client-2.registration.scopes[1]=user.write
spring.security.oauth2.authorizationserver.client.my-client-2.jwk-set-uri=https://my-client-2.com/jwks
spring.security.oauth2.authorizationserver.client.my-client-2.token-endpoint-authentication-signing-algorithm=RS256

spring:
  security:
    oauth2:
      authorizationserver:
        client:
          my-client-1:
            registration:
              client-id: "abcd"
              client-secret: "{noop}secret1"
              client-authentication-methods:
                - "client_secret_basic"
              authorization-grant-types:
                - "authorization_code"
                - "refresh_token"
              redirect-uris:
                - "https://my-client-1.com/login/oauth2/code/abcd"
                - "https://my-client-1.com/authorized"
              scopes:
                - "openid"
                - "profile"
                - "email"
                - "phone"
                - "address"
            require-authorization-consent: true
            token:
              authorization-code-time-to-live: 5m
              access-token-time-to-live: 10m
              access-token-format: "reference"
              reuse-refresh-tokens: false
              refresh-token-time-to-live: 30m
          my-client-2:
            registration:
              client-id: "efgh"
              client-secret: "{noop}secret2"
              client-authentication-methods:
                - "client_secret_jwt"
              authorization-grant-types:
                - "client_credentials"
              scopes:
                - "user.read"
                - "user.write"
            jwk-set-uri: "https://my-client-2.com/jwks"
            token-endpoint-authentication-signing-algorithm: "RS256"

client-secret 屬性必須採用配置的 PasswordEncoder 可以匹配的格式。預設的 PasswordEncoder 例項是透過 PasswordEncoderFactories.createDelegatingPasswordEncoder() 建立的。

Spring Boot 為 Spring Authorization Server 提供的自動配置旨在幫助快速入門。大多數應用將需要定製，並且會想要定義幾個 bean 來覆蓋自動配置。

以下元件可以被定義為 bean 來覆蓋特定於 Spring Authorization Server 的自動配置

RegisteredClientRepository
AuthorizationServerSettings
SecurityFilterChain
com.nimbusds.jose.jwk.source.JWKSource<com.nimbusds.jose.proc.SecurityContext>
JwtDecoder

Spring Boot 自動配置一個 InMemoryRegisteredClientRepository，Spring Authorization Server 使用它來管理註冊的客戶端。InMemoryRegisteredClientRepository 功能有限，我們建議僅在開發環境中使用它。對於生產環境，請考慮使用 JdbcRegisteredClientRepository 或建立你自己的 RegisteredClientRepository 實現。

更多資訊可以在 Spring Authorization Server 參考指南的入門 (Getting Started) 章節中找到。

SAML 2.0

依賴方 (Relying Party)

如果你的類路徑中有 `spring-security-saml2-service-provider`，你可以利用一些自動配置來設定 SAML 2.0 依賴方。Saml2RelyingPartyProperties 下的屬性用於此配置。

依賴方註冊代表了身份提供者 (IDP) 和服務提供者 (SP) 之間的配對配置。你可以在 spring.security.saml2.relyingparty 字首下注冊多個依賴方，如下例所示

Properties 檔案
YAML 檔案

spring.security.saml2.relyingparty.registration.my-relying-party1.signing.credentials[0].private-key-location=path-to-private-key
spring.security.saml2.relyingparty.registration.my-relying-party1.signing.credentials[0].certificate-location=path-to-certificate
spring.security.saml2.relyingparty.registration.my-relying-party1.decryption.credentials[0].private-key-location=path-to-private-key
spring.security.saml2.relyingparty.registration.my-relying-party1.decryption.credentials[0].certificate-location=path-to-certificate
spring.security.saml2.relyingparty.registration.my-relying-party1.singlelogout.url=https://myapp/logout/saml2/slo
spring.security.saml2.relyingparty.registration.my-relying-party1.singlelogout.response-url=https://remoteidp2.slo.url
spring.security.saml2.relyingparty.registration.my-relying-party1.singlelogout.binding=POST
spring.security.saml2.relyingparty.registration.my-relying-party1.assertingparty.verification.credentials[0].certificate-location=path-to-verification-cert
spring.security.saml2.relyingparty.registration.my-relying-party1.assertingparty.entity-id=remote-idp-entity-id1
spring.security.saml2.relyingparty.registration.my-relying-party1.assertingparty.sso-url=https://remoteidp1.sso.url
spring.security.saml2.relyingparty.registration.my-relying-party2.signing.credentials[0].private-key-location=path-to-private-key
spring.security.saml2.relyingparty.registration.my-relying-party2.signing.credentials[0].certificate-location=path-to-certificate
spring.security.saml2.relyingparty.registration.my-relying-party2.decryption.credentials[0].private-key-location=path-to-private-key
spring.security.saml2.relyingparty.registration.my-relying-party2.decryption.credentials[0].certificate-location=path-to-certificate
spring.security.saml2.relyingparty.registration.my-relying-party2.assertingparty.verification.credentials[0].certificate-location=path-to-other-verification-cert
spring.security.saml2.relyingparty.registration.my-relying-party2.assertingparty.entity-id=remote-idp-entity-id2
spring.security.saml2.relyingparty.registration.my-relying-party2.assertingparty.sso-url=https://remoteidp2.sso.url
spring.security.saml2.relyingparty.registration.my-relying-party2.assertingparty.singlelogout.url=https://remoteidp2.slo.url
spring.security.saml2.relyingparty.registration.my-relying-party2.assertingparty.singlelogout.response-url=https://myapp/logout/saml2/slo
spring.security.saml2.relyingparty.registration.my-relying-party2.assertingparty.singlelogout.binding=POST

spring:
  security:
    saml2:
      relyingparty:
        registration:
          my-relying-party1:
            signing:
              credentials:
              - private-key-location: "path-to-private-key"
                certificate-location: "path-to-certificate"
            decryption:
              credentials:
              - private-key-location: "path-to-private-key"
                certificate-location: "path-to-certificate"
            singlelogout:
               url: "https://myapp/logout/saml2/slo"
               response-url: "https://remoteidp2.slo.url"
               binding: "POST"
            assertingparty:
              verification:
                credentials:
                - certificate-location: "path-to-verification-cert"
              entity-id: "remote-idp-entity-id1"
              sso-url: "https://remoteidp1.sso.url"

          my-relying-party2:
            signing:
              credentials:
              - private-key-location: "path-to-private-key"
                certificate-location: "path-to-certificate"
            decryption:
              credentials:
              - private-key-location: "path-to-private-key"
                certificate-location: "path-to-certificate"
            assertingparty:
              verification:
                credentials:
                - certificate-location: "path-to-other-verification-cert"
              entity-id: "remote-idp-entity-id2"
              sso-url: "https://remoteidp2.sso.url"
              singlelogout:
                url: "https://remoteidp2.slo.url"
                response-url: "https://myapp/logout/saml2/slo"
                binding: "POST"

對於 SAML2 登出，預設情況下，Spring Security 的 Saml2LogoutRequestFilter 和 Saml2LogoutResponseFilter 只處理匹配 /logout/saml2/slo 的 URL。如果你想自定義 AP 發起的登出請求傳送到的 url 或 AP 傳送登出響應的 response-url，使用不同的模式，你需要提供配置來處理該自定義模式。例如，對於 servlet 應用，你可以新增一個類似於以下配置的你自己的 SecurityFilterChain

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.web.SecurityFilterChain;

import static org.springframework.security.config.Customizer.withDefaults;

@Configuration(proxyBeanMethods = false)
public class MySamlRelyingPartyConfiguration {

	@Bean
	public SecurityFilterChain securityFilterChain(HttpSecurity http) throws Exception {
		http.authorizeHttpRequests((requests) -> requests.anyRequest().authenticated());
		http.saml2Login(withDefaults());
		http.saml2Logout((saml2) -> saml2.logoutRequest((request) -> request.logoutUrl("/SLOService.saml2"))
			.logoutResponse((response) -> response.logoutUrl("/SLOService.saml2")));
		return http.build();
	}

}