Fix #451: Support Spring Boot 4.0.x

[romanstrobl]

No description provided.

[Copilot]

Pull request overview

Updates this multi-module library to align with the Spring Boot 4.x ecosystem by adjusting dependency versions and adapting Jackson/WebFlux integration to the newer stack.

Changes:

• Bump parent-managed Spring Boot version to 4.0.6.
• Migrate multiple modules/tests from com.fasterxml.jackson.* to tools.jackson.* APIs and adjust WebClient codec configuration accordingly.
• Update REST client request header handling and a few test assertions for Spring 4/Spring Framework updates.

Reviewed changes

Copilot reviewed 11 out of 11 changed files in this pull request and generated 7 comments.

Show a summary per file

File	Description
pom.xml	Bumps the managed Spring Boot dependency version to 4.0.6.
rest-model-base/src/main/java/com/wultra/core/rest/model/base/response/ObjectResponse.java	Adds JSON property ordering annotation to stabilize serialized field order.
rest-model-base/pom.xml	Adds a Jackson dependency to support new JSON annotations in the model module.
rest-client-base/src/main/java/com/wultra/core/rest/client/base/DefaultRestClient.java	Migrates Jackson/WebClient codec configuration and type handling for Spring Boot 4 compatibility.
rest-client-base/src/main/java/com/wultra/core/rest/client/base/RestClientConfiguration.java	Switches Jackson feature types to the relocated Jackson API surface.
rest-client-base/src/test/java/com/wultra/core/rest/client/base/DefaultRestClientTest.java	Updates tests to new Jackson exception types and header handling style.
rest-client-base/pom.xml	Adds relocated Jackson dependency and epoll transport classes required by Netty option usage.
http-common/src/test/java/com/wultra/core/http/common/headers/UserAgentTest.java	Migrates test JSON parsing to the relocated Jackson API surface.
http-common/pom.xml	Updates test Jackson dependency coordinates to relocated groupId.
audit-base/src/main/java/com/wultra/core/audit/base/util/JsonUtil.java	Migrates JSON serialization utilities to relocated Jackson APIs and a builder-based mapper.
audit-base/pom.xml	Updates Jackson dependency coordinates and removes the JavaTime datatype module dependency.

Comments suppressed due to low confidence (1)

rest-client-base/src/main/java/com/wultra/core/rest/client/base/DefaultRestClient.java:110

• DefaultRestClient constructor signature changed from accepting Jackson Module to JacksonModule (tools.jackson.*). This is a breaking API change for library consumers passing standard Jackson modules; consider keeping a compatibility overload or clearly versioning/documenting the breaking change as part of the Spring Boot 4 migration.

     * @param modules jackson modules
     * @throws RestClientException Thrown in case client initialization fails.
     */
    public DefaultRestClient(final RestClientConfiguration config, final JacksonModule... modules) throws RestClientException {
        // Use WebClient configuration from the config constructor parameter
        this.config = config;
        this.modules = modules == null ? Collections.emptyList() : Arrays.asList(modules);
        initializeWebClient();

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[banterCZ]

May we please start writing Changelog.md as we have discussed? Just one line, that we are migrating to Spring Boot 4 and Jackson 3.

[michal-rozehnal-w]

Looks good

[banterCZ]

Thanks for reflecting the comments.