MVC Architecture Flow in Spring Boot

Source: Dev.to

What is MVC?

MVC stands for:

• M → Model
• V → View
• C → Controller

It is a design pattern used to organize code by separating concerns. In Spring Boot, MVC helps structure web applications cleanly.

MVC in Spring Boot separates an application into Model, View, and Controller:

• Model handles data and business logic.
• View is responsible for displaying the user interface.
• Controller acts as a bridge, receiving user requests and coordinating between Model and View.

When a request arrives, the Controller processes it, interacts with the Model, and sends the result to the View. This separation keeps the code organized, easier to maintain, and improves scalability, readability, and development efficiency.

Why MVC is Used?

Without MVC, all code (logic + UI + data) gets mixed → messy.

With MVC:

• ✅ Code is clean and organized
• ✅ Easy to maintain & debug
• ✅ Supports team development
• ✅ Reusable components

Components of MVC

Model (Data Layer)

Represents data and business logic. Usually includes:

• Entity classes
• Database interaction

Example:

class Student {
    int id;
    String name;
}

View (UI Layer)

What the user sees 👀. Can be:

• HTML
• JSP
• Thymeleaf

Example:

## Welcome Student

Controller (Request Handler)

• Handles user requests
• Connects Model and View

Example:

@RestController
public class StudentController {

    @GetMapping("/student")
    public String getStudent() {
        return "Hello Student";
    }
}

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