Bird
0
0

After upgrading SpringDoc to a newer version, your Swagger UI stopped loading and shows a 404 error. What should you check first?

medium📝 Debug Q7 of 15
Spring Boot - API Documentation
After upgrading SpringDoc to a newer version, your Swagger UI stopped loading and shows a 404 error. What should you check first?
AConfirm that your application.properties file exists
BCheck if your controllers have @RestController annotation
CEnsure your database connection is active
DVerify if the Swagger UI path changed in the new version
Step-by-Step Solution
Solution:

  1. Step 1: Understand version impact on UI path

    SpringDoc sometimes changes default Swagger UI paths between versions.

  2. Step 2: Check UI path configuration

    Verify the new default path and update your browser URL accordingly.

  3. Final Answer:

    Verify if the Swagger UI path changed in the new version -> Option D

  4. Quick Check:

    Upgrade issues often due to path changes [OK]
Quick Trick: Check Swagger UI path after upgrading SpringDoc [OK]
Common Mistakes:
  • Blaming controller annotations for UI issues
  • Checking unrelated database connections
  • Assuming missing properties file causes UI 404

Want More Practice?

15+ quiz questions · All difficulty levels · Free

Free Signup - Practice All Questions
More Spring Boot Quizzes
API Documentation - Swagger UI integration - Quiz 2easy Advanced Patterns - Custom auto-configuration - Quiz 5medium Advanced Patterns - Why enterprise patterns matter - Quiz 14medium Aspect-Oriented Programming - @Before advice - Quiz 11easy Aspect-Oriented Programming - @Before advice - Quiz 8hard Docker and Deployment - Dockerfile for Spring Boot - Quiz 1easy Spring Boot Actuator - Health endpoint customization - Quiz 13medium Spring Boot Actuator - Health endpoint customization - Quiz 4medium Testing Spring Boot Applications - MockMvc for HTTP assertions - Quiz 12easy Testing Spring Boot Applications - @WebMvcTest for controller testing - Quiz 8hard