Fix x-spring-provide-args handling. Pass arguments to delegates. Use JavaParser.

[wilx]

This fixes #24063. This is an alternative to #24064. This utilizes JavaParser instead of regular expressions to extract the information it needs.

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Summary by cubic

Fixes x-spring-provide-args: replaces regex parsing with JavaParser and forwards provided args across API interfaces, controllers, and delegates in all mapping modes. Previously, provided args were not reliably parsed or passed to delegates; now they are parsed as Java parameters, imports are generated, and signatures/ordering are consistent.

• Parse with com.github.javaparser and auto-import; simplify fully qualified annotation and generic type names (incl. nested generics).

• Emit annotated parameters for interfaces/controllers; strip annotations in delegates. Add vendor extensions springProvideArgsNames and springProvideArgsDelegate; update api.mustache, apiController.mustache, and apiDelegate.mustache to pass args by name, including api_interface and interface-only modes.

• Preserve Pageable position and fix commas/ordering with request context, reactive, and provided args. Add tests covering with/without provide-args, pageable, reactive, controller-to-delegate, and api_interface.

• Dependencies: move com.github.javaparser:javaparser-core to compile scope.

^{Written for commit 68697cf. Summary will update on new commits.}

[cubic-dev-ai]

1 issue found and verified against the latest diff

<sub>Reply with feedback, questions, or to request a fix.

Re-trigger cubic</sub>

[wing328]

please resolve the merge conflicts when you've time

[wilx]

please resolve the merge conflicts when you've time

Resolved.

[wilx]

I have identified some issues with the patch related to comma handling. I am working on a fix.

[cubic-dev-ai]

No issues found across 11 files

_{Re-trigger cubic}

[wilx]

I think this is ready.

[wilx]

Rebased.

[wilx]

Rebased.

[wilx]

@wing328 Is there a chance this can be included in the next release?

[wing328]

thanks for the PR

cc Spring technical committee: @cachescrubber (2022/02) @welshm (2022/02) @MelleD (2022/02) @atextor (2022/02) @manedev79 (2022/02) @javisst (2022/02) @borsch (2022/02) @banlevente (2022/02) @Zomzog (2022/09) @martin-mfg (2023/08) @KannaKim (2026/07) to see if they've any question/feedback.

[wilx]

Is there anything I can do to push this through? The bug is real and this change fixes it.