Spring Boot and Jackson, JSR310 in response body

Question

The JacksonAutoConfiguration initializes an ObjectMapper with the JSR310Module registered. Then HttpMessageConvertersAutoConfiguration initializes a MappingJackson2HttpMessageConverter. But this MessageConverter never gets plugged in the RequestResponseBodyMethodProcessor.

As a result:

• If the controller returns a object which should be jsonified by Jackson, dates are poorly converted because the wrong MappingJackson2HttpMessageConverter is used (initialized in WebMvcConfigurationSupport#addDefaultHttpMessageConverters)
• But, if the ObjectMapper is injected in the controller and used to jsonify the same object, then the date format is alright.

How can I can wake the WebMvcAutoConfigurationAdapter up? What should I do to bind the configured Jackson ObjectMapper with Spring MVC and make it handle response bodies?

Answer 1

If you use @EnableWebMvc that would explain your symptoms So the rule thumb is: do not use @EnableWebMvc with Spring Boot, unless you wan't to customize Web MVC configuration?