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	- Fixed invalid XML tags in dependency examples.
- Corrected typo in `<artifactId>` ("opensaml-saml-imple" -> "opensaml-saml-impl").
- Excluded all OpenSAML 4.x dependencies.
- Removed redundant dependencies (`opensaml-core-api` and `opensaml-core-impl`) as they are transitively included in `opensaml-saml-api` and `opensaml-saml-impl`.
Closes gh-16191
		
	
			
		
			
				
	
	
		
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			77 lines
		
	
	
		
			2.4 KiB
		
	
	
	
		
			Plaintext
		
	
	
	
	
	
= OpenSAML Support
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Spring Security provides an API for implementing SAML 2.0 features, and it also provides a default implementation using OpenSAML.
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Because Spring Security supports more than one version of OpenSAML at the same time, the components use the following naming convention:
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* Any component that is usable across all supported versions is named `OpenSamlXXX`.
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* Any component that targets OpenSAML 4.x is named `OpenSaml4XXX`
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* Any component that targets OpenSAML 5.x is named `OpenSaml5XXX`
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`spring-security-config` selects between these implementations by default by discovering which version your application is currently using.
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For example, if you are using OpenSAML 4, Spring Security will use the `OpenSaml4XXX` components.
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== Selecting OpenSAML 4
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Spring Security depends on OpenSAML 4 by default, so you need do nothing to begin using it other than importing the `spring-security-saml` dependency.
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== Selecting OpenSAML 5
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To use OpenSAML, you should override the `opensaml` dependencies as follows:
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[tabs]
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======
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Maven::
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+
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[source,maven,role="primary"]
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----
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<dependencies>
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    <dependency>
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        <groupId>org.springframework.security</groupId>
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        <artifactId>spring-security-saml2-service-provider</artifactId>
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        <exclusions>
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            <exclusion>
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                <groupId>org.opensaml</groupId>
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                <artifactId>*</artifactId>
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            </exclusion>
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        </exclusions>
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    </dependency>
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    <dependency>
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        <groupId>org.opensaml</groupId>
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        <artifactId>opensaml-saml-api</artifactId>
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        <version>5.1.2</version>
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    </dependency>
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    <dependency>
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        <groupId>org.opensaml</groupId>
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        <artifactId>opensaml-saml-impl</artifactId>
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        <version>5.1.2</version>
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    </dependency>
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</dependencies>
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----
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Gradle::
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+
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[source,gradle,role="secondary"]
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----
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dependencies {
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    constraints {
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        implementation "org.opensaml:opensaml-core-api:5.1.2"
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        implementation "org.opensaml:opensaml-core-impl:5.1.2"
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        implementation "org.opensaml:opensaml-saml-api:5.1.2"
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        implementation "org.opensaml:opensaml-saml-impl:5.1.2"
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    }
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    // ...
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    implementation ('org.springframework.security:spring-security-saml2-service-provider') {
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        exclude group: "org.opensaml", module: "opensaml-core"
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    }
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    // ...
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}
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----
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======
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[NOTE]
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The exclusion is necessary because OpenSAML 5 splits `opensaml-core` into `opensaml-core-api` and `opensaml-core-impl`
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