Action Jackson! Effective JSON processing in Spring Boot Applications
summary
Shows concrete Jackson plus Spring Boot behaviors: creating a raw ObjectMapper bean breaks Boot auto-configuration and removes modules like parameter names module and JSR-310 support; Boot otherwise registers jdk8, jsr310 and parameter-names modules and sets fail-on-unknown-properties to false. Demonstrates using ObjectMapperBuilderCustomizer, per-endpoint builders, property-naming strategies, JsonPointer/JsonPath extraction, JacksonTester slice tests, and a production custom serializer to truncate OffsetDateTime to seconds. Warns to reuse ObjectMappers for performance; demos all run successfully.
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chapters (10)
- 0:00Jackson in Spring Boot
- 10:19Default Jackson config
- 15:12Jackson features and modules
- 22:53JSON naming and serialization
- 26:03ObjectMapperBuilderCustomizer tuning
- 30:17Parameter names module and records
- 33:27Testing JSON with Spring Boot slices
- 35:54Alternative JSON with Maps and JsonNode
- 42:19JSON views for selective fields
- 45:07Best practices for JSON
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