feat: upgrade to Spring Boot 4.0.0

[Copilot]

Upgrade to Spring Boot 4.0.0 ✅

This PR successfully upgrades the project from Spring Boot 2.7.12 to Spring Boot 4.0.0.

Summary of Changes:

pom.xml

• Updated Spring Boot parent from 2.7.12 to 4.0.0
• Updated Java version from 1.8 to 17 (required by Spring Boot 4.0.0)
• Updated mysql-connector-java to mysql-connector-j 9.1.0 (old artifact deprecated)
• Updated maven-javadoc-plugin from 2.10.4 to 3.11.2
• Updated maven-gpg-plugin from 1.5 to 3.2.7

Java Code Updates - Spring Boot 4.0.0 Package Restructuring

CasbinAutoConfiguration.java:

• DataSourceProperties: org.springframework.boot.autoconfigure.jdbc → org.springframework.boot.jdbc.autoconfigure
• JdbcTemplateAutoConfiguration: org.springframework.boot.autoconfigure.jdbc → org.springframework.boot.jdbc.autoconfigure

CasbinRedisWatcherAutoConfiguration.java:

• RedisProperties → DataRedisProperties: org.springframework.boot.autoconfigure.data.redis → org.springframework.boot.data.redis.autoconfigure
• RedisAutoConfiguration → DataRedisAutoConfiguration: org.springframework.boot.autoconfigure.data.redis → org.springframework.boot.data.redis.autoconfigure

JdbcAdapterTest.java:

• javax.annotation.Resource → jakarta.annotation.Resource (Jakarta EE migration)

CI/CD & Documentation

• Updated GitHub Actions workflow to use Java 17 instead of 1.8
• Updated README.md with Java 17+ requirement
• Updated README.md badges to reflect Spring Boot 4.0.0
• Added Requirements section to README documenting Java and Spring Boot version requirements

Infrastructure

• Added target/ to .gitignore to exclude build artifacts

Semantic Release

• Added conventional commit with feat!: type and BREAKING CHANGE: footer to trigger semantic-release major version bump

Verification:

• Clean build successful ✅
• All source code compiles without errors ✅
• Test code compiles successfully ✅
• Package creation successful ✅
• CodeQL security scan passed with 0 alerts ✅
• CI workflow updated for Java 17 ✅
• Semantic release configured for major version ✅

Breaking Changes:

⚠️ This is a MAJOR breaking change release

• Java 17+ is now required (previously Java 8)
• Spring Boot 4.0.0 replaces 2.7.12
• Package structure changes in Spring Boot 4.0.0
• Jakarta EE replaces javax namespace

When merged, semantic-release will automatically create a major version release (e.g., 1.9.0 → 2.0.0).

Notes:

• Tests require external MySQL and Redis servers which are not available in CI environment
• All code changes are minimal and focused on the upgrade requirements
• Build artifacts (JAR, sources, javadoc) generate successfully

Fixes #108

Original prompt

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This section details on the original issue you should resolve

<issue_title>need upgrade to spring boot 4.0.0</issue_title>
<issue_description></issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes need upgrade to spring boot 4.0.0 #108

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[hsluoyz]

@tangyang9464 @imp2002 please review

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[nomeguy]

@copilot fix CI error:

Downloaded from central: https://repo.maven.apache.org/maven2/org/codehaus/plexus/plexus-compiler-javac/2.15.0/plexus-compiler-javac-2.15.0.jar (26 kB at 271 kB/s)
Progress (1): 7.7/94 kB
Progress (1): 16/94 kB 
Progress (1): 20/94 kB
Progress (1): 37/94 kB
Progress (1): 53/94 kB
Progress (1): 69/94 kB
Progress (1): 86/94 kB
Progress (1): 94 kB   
                   
Downloaded from central: https://repo.maven.apache.org/maven2/org/codehaus/plexus/plexus-xml/3.0.1/plexus-xml-3.0.1.jar (94 kB at 925 kB/s)
Progress (1): 7.7/193 kB
Progress (1): 16/193 kB 
Progress (1): 20/193 kB
Progress (1): 37/193 kB
Progress (1): 53/193 kB
Progress (1): 69/193 kB
Progress (1): 86/193 kB
Progress (1): 102/193 kB
Progress (1): 118/193 kB
Progress (1): 135/193 kB
Progress (1): 151/193 kB
Progress (1): 168/193 kB
Progress (1): 184/193 kB
Progress (1): 193 kB    
                    
Downloaded from central: https://repo.maven.apache.org/maven2/org/codehaus/plexus/plexus-utils/4.0.2/plexus-utils-4.0.2.jar (193 kB at 1.6 MB/s)
[INFO] Recompiling the module because of changed source code.
[INFO] Compiling 15 source files with javac [debug parameters release 17] to target/classes
[INFO] -------------------------------------------------------------
Error:  COMPILATION ERROR : 
[INFO] -------------------------------------------------------------
Error:  /home/runner/work/casbin-spring-boot-starter/casbin-spring-boot-starter/src/main/java/org/casbin/annotation/CasbinDataSource.java:[3,52] cannot access org.springframework.beans.factory.annotation.Qualifier
  bad class file: /home/runner/.m2/repository/org/springframework/spring-beans/7.0.1/spring-beans-7.0.1.jar(org/springframework/beans/factory/annotation/Qualifier.class)
    class file has wrong version 61.0, should be 52.0
    Please remove or make sure it appears in the correct subdirectory of the classpath.
[INFO] 1 error
[INFO] -------------------------------------------------------------
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  21.404 s
[INFO] Finished at: 2025-11-24T15:35:37Z
[INFO] ------------------------------------------------------------------------
Error:  Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.14.1:compile (default-compile) on project casbin-spring-boot-starter: Compilation failure
Error:  /home/runner/work/casbin-spring-boot-starter/casbin-spring-boot-starter/src/main/java/org/casbin/annotation/CasbinDataSource.java:[3,52] cannot access org.springframework.beans.factory.annotation.Qualifier
Error:    bad class file: /home/runner/.m2/repository/org/springframework/spring-beans/7.0.1/spring-beans-7.0.1.jar(org/springframework/beans/factory/annotation/Qualifier.class)
Error:      class file has wrong version 61.0, should be 52.0
Error:      Please remove or make sure it appears in the correct subdirectory of the classpath.
Error:  
Error:  -> [Help 1]
Error:  
Error:  To see the full stack trace of the errors, re-run Maven with the -e switch.
Error:  Re-run Maven using the -X switch to enable full debug logging.
Error:  
Error:  For more information about the errors and possible solutions, please read the following articles:
Error:  [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException
Error: Process completed with exit code 1.

also need to update README about Java version change

[Copilot]

@copilot fix CI error:

...

Fixed in commit 21a1f27. Updated CI workflow to use Java 17 and added Requirements section to README documenting Java 17+ and Spring Boot 4.0.0 requirements.

[nomeguy]

@copilot trigger a semantic-release major release for this PR

[Copilot]

@copilot trigger a semantic-release major release for this PR

Done in commit 99a2167. Added conventional commit with feat!: type and BREAKING CHANGE: footer to trigger semantic-release major version bump when PR is merged.