GaneshPatil7517 opened a new pull request, #279:
URL: https://github.com/apache/shiro-site/pull/279
## Description
This PR adds a comprehensive migration guide for developers upgrading Apache
Shiro across major versions. The guide addresses the changes outlined in issue
#271 and provides clear, actionable documentation for the following migration
paths:
### Migrating from 1.x to 2.x
- Java 8 → Java 11 minimum requirement
- Jakarta EE 8-11 support using `jakarta` classifiers
- Spring Boot 2.x and 3.x compatibility with appropriate dependencies
### Migrating from 2.x to 3.x
- Java 11 → Java 17 minimum requirement
- Native Jakarta EE 10-11 support (no classifiers needed)
- Spring Boot 4 compatibility
- Security behavior changes:
- Deny access by default (previously allow-all)
- Case-insensitive URL matching enabled by default
- CORS preflight requests enabled by default
### Configuration Examples
- shiro.ini and Spring Boot application.properties examples
- Instructions for reverting to legacy behavior when necessary
### Common Migration Pitfalls
- Documented typical issues developers encounter during migration
## Testing
- Built the site locally using `mvn process-classes`
- Verified the migration guide renders correctly at
`target/website/migration-guide.html`
- Confirmed navigation links work from both the Guides and Documentation
pages
## Related Issue
Closes #271
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