Java Tech Enthusiast

Nov 2, 2026 · Backend Development

SpringDoc vs Swagger: Complete Spring Boot API Documentation Migration Guide

This tutorial explains why SpringDoc replaces the deprecated SpringFox for Spring Boot 2.6+/3.x, demonstrates zero-config setup with springdoc-openapi-starter-webmvc-ui 2.5.0, covers programmatic and declarative API grouping via GroupedOpenApi beans or YAML, and shows how to resolve static resource conflicts with WebMvcConfigurer and SpringSecurity permitAll rules for /swagger-ui/**, /v3/api-docs/**, and /webjars/**.