[[jackson]]
=== Jackson Support

Spring Security has added Jackson Support for persisting Spring Security related classes.
This can improve the performance of serializing Spring Security related classes when working with distributed sessions (i.e. session replication, Spring Session, etc).

To use it, register the `SecurityJackson2Modules.getModules(ClassLoader)` as https://wiki.fasterxml.com/JacksonFeatureModules[Jackson Modules].

[source,java]
----
ObjectMapper mapper = new ObjectMapper();
ClassLoader loader = getClass().getClassLoader();
List<Module> modules = SecurityJackson2Modules.getModules(loader);
mapper.registerModules(modules);

// ... use ObjectMapper as normally ...
SecurityContext context = new SecurityContextImpl();
// ...
String json = mapper.writeValueAsString(context);
----
