[BUG][JAVA][SPRING] jackson-databind-nullable still pinned to 0.2.8 in all JavaSpring pom-sb4 templates, breaking openApiNullable with useJackson3

[motiqa]

Bug Report Checklist

• Have you provided a full/minimal spec to reproduce the issue?
• Have you validated the input using an OpenAPI validator?
• Have you tested with the latest master to confirm the issue still exists? (verified against the current master templates, see table below; reproduced with releases 7.23.0 and 7.25.0)
• Have you searched for related issues/PRs?
• What's the actual output vs expected output?

Description

PR #24501 bumped jackson-databind-nullable from 0.2.8 to 0.2.11, but in JavaSpring it updated only the pom-sb3.mustache variants. All three pom-sb4.mustache templates still pin 0.2.8.

That is precisely the combination which requires 0.2.11:

• useJackson3 can only be set together with useSpringBoot4, so Jackson 3 users always get pom-sb4.mustache.
• In 0.2.8, JsonNullableModule extends com.fasterxml.jackson.databind.Module (Jackson 2) and therefore cannot be registered on a Jackson 3 mapper.
• Jackson 3 support (JsonNullableJackson3Module extends tools.jackson.databind.JacksonModule) was added in jackson-databind-nullable 0.2.10.

Net effect: generating with useSpringBoot4=true, useJackson3=true, openApiNullable=true produces models that correctly import tools.jackson.databind.annotation.JsonDeserialize and use org.openapitools.jackson.nullable.JsonNullable, but a pom.xml that resolves a Jackson-2-only nullable module. There is no supported way to register it, so JsonNullable properties cannot be serialized or deserialized at all.

Current state on master:

Template	Pinned version
JavaSpring/libraries/spring-boot/pom-sb3.mustache	0.2.11
JavaSpring/libraries/spring-boot/pom-sb4.mustache	0.2.8
JavaSpring/libraries/spring-cloud/pom-sb3.mustache	0.2.11
JavaSpring/libraries/spring-cloud/pom-sb4.mustache	0.2.8
JavaSpring/libraries/spring-http-interface/pom-sb3.mustache	0.2.11
JavaSpring/libraries/spring-http-interface/pom-sb4.mustache	0.2.8
kotlin-spring/libraries/spring-boot/pom-sb4.mustache	0.2.11

kotlin-spring had both its sb3 and sb4 templates updated in that same PR, which suggests the JavaSpring sb4 files were simply overlooked.

openapi-generator version

Reproduced with 7.23.0 and 7.25.0 (latest release). Not a regression: the sb4 templates have pinned 0.2.8 since Spring Boot 4 support was introduced in #22854.

OpenAPI declaration file content or url

Any spec with an optional nullable property reproduces it:

openapi: 3.0.3
info:
  title: minimal
  version: "1.0.0"
paths: {}
components:
  schemas:
    Thing:
      type: object
      properties:
        name:
          type: string
          nullable: true

Generation Details

{
  "useSpringBoot4": true,
  "useJackson3": true,
  "openApiNullable": true,
  "interfaceOnly": true
}

Steps to reproduce

openapi-generator-cli generate -g spring -i spec.yaml -o out -c config.json
grep -A 2 jackson-databind-nullable out/pom.xml

Actual output:

<artifactId>jackson-databind-nullable</artifactId>
<version>0.2.8</version>

Expected output:

<artifactId>jackson-databind-nullable</artifactId>
<version>0.2.11</version>

Suggested fix

A one-line change in each of the three JavaSpring/libraries/*/pom-sb4.mustache, mirroring what #24501 already applied to the pom-sb3.mustache files:

             <artifactId>jackson-databind-nullable</artifactId>
-            <version>0.2.8</version>
+            <version>0.2.11</version>

Related issues/PRs

• [SPRING] support option openApiNullable with useJackson3 #23324 / feat(spring): enable openApiNullable with useJackson3 #23331 — lifted the restriction so openApiNullable can be used with useJackson3
• update jackson databind nullable to 0.2.11 #24501 — bumped to 0.2.11, but missed the JavaSpring sb4 templates
• [java] jackson databind nullable update v0.2.11 #24498 — duplicate of update jackson databind nullable to 0.2.11 #24501, not merged
• OpenAPITools/jackson-databind-nullable v0.2.10 — added JsonNullableJackson3Module