MongoDB + Spring Boot CRUD Application for Beginners

Discover how MongoDB functions as a NoSQL database that stores data in flexible JSON-like documents, instead of relational tables, like a toy box for user profiles and product listings.

Explore how modern apps need MongoDB for flexible, scalable data storage that saves new data as documents and accepts new fields without breaking existing data.

Use MongoDB when your data changes constantly and schemas evolve, such as user profiles or product listings, especially in startups or from-scratch apps that rely on JSON-heavy workflows.

Explore Studio 3T setup for a beginner MongoDB CRUD app with a free 14-day trial, Google login, activation code, and GUI or shell modes with connection testing.

Build a MongoDB and Spring Boot CRUD app by implementing create, read, update, and delete endpoints for employees, using Postman and IntelliJ, with code available on GitHub.

Explore the web UI of a MongoDB + spring boot CRUD app, featuring a home page to add, edit, and delete employees and their project allocations.

Create a Spring Boot project via Spring initializer, using Java Maven and Spring Boot 3.5.3, add Spring Web and Spring Boot starter data MongoDB, then download and extract.

Import the project into IntelliJ and update application.properties to connect to MongoDB by setting host to localhost, port to 7017, and database name to spring boot app.

Create the employee entity in a new entity package, modeling id, name, email, gender, department reference, and projects, annotate it as a document with collection mapping, and generate getters and setters.

Define department with name and business description, and generate getters and setters. Define project with name and allocation, and generate getters and setters.

Create an employee repository interface in a MongoDB and Spring Boot app, annotate with @Repository, extend the Mongo repository to access crud methods like find all and save all.

Create an employee service layer wired to the employee repository, annotated as a service, to implement CRUD operations: create, get all, get by ID, update, and delete.

Create a rest controller for employees under api/employees, wire the employee service, and implement create, get all, get by id (with not found), update, and delete via response entities.

Test a MongoDB + Spring Boot CRUD app using Postman by sending JSON payloads to create, retrieve, update, and delete employees; note how object id converts automatically.

Add the Thymeleaf dependency to enable a web UI, and create an employee web controller with pages to list employees and add or update an employee.

Show how to create an employee web UI controller in Spring Boot for a MongoDB CRUD app, including list, create, edit, update, delete mappings and parsing project names and allocations.

Create two html templates, including employee.html, in templates with Thymeleaf and bootstrap, featuring an add button and a table of employees (name, email, gender, department, projects, actions) with delete prompts.

Create an add/edit employee Thymeleaf html page with a single form for name, email, gender, department, description, projects, and allocations, using conditional post mappings and a cancel button.

Implement flash attributes using redirect attributes to show success or error messages for create, update, and delete employee operations in a spring boot CRUD app.

Run a spring boot crud app on port 8080 to manage employees, performing create, edit, and delete operations, and verify success messages and thymeleaf-driven UI updates.

Celebrate completing a compact beginner-friendly course that covers MongoDB, Spring Boot, and CRUD operations, including embedding MongoDB with Spring Boot for practical use.