How to tell Jackson to ignore a field during serialization if its value is null?

Question

How can Jackson be configured to ignore a field value during serialization if that field\'s value is null.

For example:

public class SomeClass {
            


        

Answer 1

If in Spring Boot, you can customize the jackson ObjectMapper directly through property files.

Example application.yml:

spring:
  jackson:
    default-property-inclusion: non_null # only include props if non-null

Possible values are:

always|non_null|non_absent|non_default|non_empty

More: https://docs.spring.io/spring-boot/docs/current/reference/html/howto-spring-mvc.html#howto-customize-the-jackson-objectmapper