Bazel 9.0.0 build issue: rules_spring+/springboot/springboot.bzl:41:43: name 'JavaInfo' is not defined

[yakovliam]

With the upgrade to Bazel 9.0.0, projects using rules_spring previously failed during analysis due to missing Java symbols in .bzl files, most notably in springboot.bzl.

Specifically, building a project that uses the springboot rule would produce the following error:

springboot.bzl:41:43: name 'JavaInfo' is not defined

This was caused by changes in Bazel 9 / Bzlmod where library-specific Starlark symbols are no longer implicitly available and must be explicitly provided via module dependencies. In this case, JavaInfo and other Java symbols were not available unless rules_java was declared as a dependency of rules_spring.

This has now been resolved in PR #282 by:

• Adding rules_java to the MODULE.bazel of rules_spring so that Java toolchains and symbols are available project-wide.
• Updating .bzl files (including springboot.bzl) to explicitly load the required symbols, for example:

load("@rules_java//java:defs.bzl", "java_binary", "JavaInfo")

java_binary is included where needed because it is also referenced in the same rule files.

Expected behavior: projects using rules_spring now build successfully under Bazel 9 without requiring downstream users to manually add rules_java or patch .bzl files.