Spring Boot 4 + Jackson 3 — less JSON boilerplate with yupzip-json

Spring Boot 4 just shipped with native Jackson 3 support. Good moment to revisit how much Java we write when we work with JSON.

If you've built a Spring service, you've probably written variations of this dozens of times:

JsonNode root = mapper.readTree(json).get("employees");

List<String> names = new ArrayList<>();

if (root != null && root.isArray()) {