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			51 lines
		
	
	
		
			1.6 KiB
		
	
	
	
		
			Plaintext
		
	
	
	
	
	
[[jackson]]
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= Jackson Support
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Spring Security provides Jackson support for persisting Spring Security related classes.
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This can improve the performance of serializing Spring Security related classes when working with distributed sessions (i.e. session replication, Spring Session, etc).
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To use it, register the `SecurityJackson2Modules.getModules(ClassLoader)` with `ObjectMapper` (https://github.com/FasterXML/jackson-databind[jackson-databind]):
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[tabs]
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======
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Java::
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+
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[source,java,role="primary"]
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----
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ObjectMapper mapper = new ObjectMapper();
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ClassLoader loader = getClass().getClassLoader();
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List<Module> modules = SecurityJackson2Modules.getModules(loader);
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mapper.registerModules(modules);
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// ... use ObjectMapper as normally ...
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SecurityContext context = new SecurityContextImpl();
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// ...
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String json = mapper.writeValueAsString(context);
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----
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Kotlin::
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+
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[source,kotlin,role="secondary"]
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----
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val mapper = ObjectMapper()
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val loader = javaClass.classLoader
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val modules: MutableList<Module> = SecurityJackson2Modules.getModules(loader)
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mapper.registerModules(modules)
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// ... use ObjectMapper as normally ...
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val context: SecurityContext = SecurityContextImpl()
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// ...
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val json: String = mapper.writeValueAsString(context)
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----
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======
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[NOTE]
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====
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The following Spring Security modules provide Jackson support:
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- spring-security-core (`CoreJackson2Module`)
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- spring-security-web (`WebJackson2Module`, `WebServletJackson2Module`, `WebServerJackson2Module`)
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- xref:servlet/oauth2/client/index.adoc#oauth2client[ spring-security-oauth2-client] (`OAuth2ClientJackson2Module`)
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- spring-security-cas (`CasJackson2Module`)
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====
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