@Controller vs @RestController in Spring Boot | MVC, Thymeleaf & REST Explained
This is the next video in the Spring Boot Project Series, where we clear one of the most confusing concepts for beginners:
👉 What is the difference between @Controller and @RestController?
In this video, we visually and practically demonstrate how Spring Boot MVC works and how REST APIs are different.
🐱 What you’ll learn in this video
What MVC (Model–View–Controller) architecture is:
How Spring Boot traditionally handled frontend using template engines
Creating a simple MVC flow using:
@Controller
Model
View (HTML)
Rendering dynamic data using Thymeleaf
How data flows from:
Controller → Model → View
Difference between:
@Controller (returns HTML / View)
@RestController (returns data / JSON)
Understanding @ResponseBody
Why @RestController = @Controller + @ResponseBody
When to use MVC vs REST APIs in real projects
Why this is important
Many beginners: Mix MVC and REST
Don’t understand why HTML renders in one case but JSON in another
Get confused when templates don’t load
This video removes that confusion completely.
🚀 What’s coming next
Moving fully into REST APIs
Using JPA & PostgreSQL
Real backend architecture (Controller → Service → Repository)
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