How do I obtain the Jackson ObjectMapper in use by Spring 4.1?

java json spring spring-mvc jackson
Adam Maass picture Adam Maass · May 5, 2015 · Viewed 70.9k times · Source

Spring 4.1 instantiates a Jackson ObjectMapper instance. I have reason to want to @Autowire that instance into one of my controllers: The controller does some minor JSON parsing of its own using Jackson, but the ObjectMapper it uses should be the one and same instance that Spring itself is using. How do I go about accomplishing that?

Note that I'm not asking how to custom configure the ObjectMapper in use by Spring; I'm happy with the defaults. I just want to fish the instance used by Spring out so that I can re-use the existing instance in my own code.

Answer

Tuno picture Tuno · Jun 9, 2015

If you're using Spring Boot with Jackson on your classpath and default implementation for JSON parsing in your REST controller, then this should work:

@Autowired
private ObjectMapper jacksonObjectMapper;

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