intermediate~2h
Custom AuthenticationProvider & Exception Handling
The default DaoAuthenticationProvider covers the common case. This chapter is what to do when authentication needs custom logic — and how to handle it cleanly when authentication fails.
Learning objectives
- Beginner: State what contract an AuthenticationProvider must implement.
- Intermediate: Implement a custom AuthenticationProvider for a non-standard authentication rule.
- Advanced: Implement custom AuthenticationEntryPoint and AccessDeniedHandler beans that return consistent JSON errors instead of Spring's default HTML pages.
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Custom AuthenticationProvider & Exception Handling