Build a Complete Inventory System Using SpringBoot & React.

Create a Spring Boot backend for an inventory management system by generating a start.spring.io project and adding Spring Web, JPA, MySQL, Spring Security, Lombok, Validation, JWT, and model mapper.

Configure the project to connect to the database by editing application properties: port 5050, URL, username, password, DDL class name, development mode update, and two gigabyte upload limit.

Structure the Spring Boot project by organizing packages for config, details, enums, exceptions, models, repositories, security configuration, and services. Learn how a specification filter enables easy database querying.

Define a Spring Boot model mapper bean to map entities to DTOs, and implement user, category, supplier, product, and transaction entities with relationships and validation for an inventory system.

Learn to design comprehensive DTOs for categories, products, suppliers, transactions, and users in a SpringBoot and React inventory system, with json serialization rules and validation.

Create and extend spring data jpa repositories for products, categories, suppliers, users, and transactions, enabling search by name, description, sku, and email, plus specification-based transaction filtering.

Create custom exception classes such as not found, name value required, and invalid credential, and implement a global exception handler returning precise HTTP status codes.

Implement a security layer by converting the user to an auth user via Spring Security's UserDetails, map roles to authorities, and use email as the username with all accounts enabled.

Build a custom user service in Spring security by autowiring the user repository, implementing user details service, loading by email, throwing not found when absent, and converting to user details.

Create a jwt util service to generate and validate tokens, configure a six-month expiration, sign with a secret key using sha256, and extract and verify user details from tokens.

Implement an auth filter as API entry point, extract and validate a bearer token from the authorization header, load the user from the custom service, and set the security context.

Configure a spring security filter chain with custom authenticators, entry points, and access-denied handlers; disable csrf, permit api requests, and enforce stateless sessions with bcrypt encoding and an authentication manager.

Configure cors in spring boot by overriding the web mvc configure to register '/**' and allow all origins for testing, with production restricting origins and enabling get, post, put, delete.

Develop a reusable transaction search with a Spring Boot specification, filtering by fields across user, supplier, product, and category, including month and year period checks.

Design a user service for an inventory system, implementing register and login flows, CRUD operations, current user retrieval, and token authentication with JWT.

Define and implement auth and users controllers in a Spring Boot app, exposing register, login, get/update/delete user endpoints, and securing them with pre-authorize checks for admin roles.

Test the inventory system's user endpoints with Postman, registering users, authenticating with bearer tokens, and performing CRUD operations with admin and manager roles and permission checks.

Implement a category service and controller in Spring Boot, defining create, get all, get by id, update, and delete methods, map between category DTOs and entities with a model mapper.

Build a category controller with endpoints to create, get all, get by id, update, and delete categories, secured for admins and backed by the category service.

Test category endpoints using postman to create a new category named electronics, protected by admin authentication, and troubleshoot mapping errors in the category creation flow.

Develop a supplier service implementation with create, read, update, and delete operations using a supplier repository, including conditional field updates and returning supplier DTOs.

Develop a supplier controller for the inventory system, using the supplier service and supplier DTO to add, list, get by id, update, and delete suppliers.

Test supplier endpoints by creating multiple suppliers with name, contact info, and address, retrieving them by ID, then updating and deleting to verify responses and IDs.

Develop a complete product service in Spring Boot, handling save, update, get, delete, and search operations, including image upload and category association.

Design a product controller with endpoints to add, update, retrieve, delete, and search products, handling image uploads and fields like name, sku, price, stock, and category id.

Test and validate product endpoints with postman by creating, retrieving, updating, deleting, and searching products using form data, authorization tokens, and category handling in a SpringBoot & React inventory system.

Develop a transaction service to handle purchases, sales, and returns in an inventory system. Implement pagination, filtering, and dto mapping with repositories and current logged-in user context.

Create a transaction controller for an inventory system handling purchase, sale, and return endpoints. Enable paging and filtering, retrieval by id or month/year, and status updates via put.

Test the transaction API using Postman to create purchases, sales, returns, and update statuses, verify stock changes, and retrieve transactions by ID, month, or user.

Create a get endpoint to fetch the current logged-in user in Spring Boot, expose /user/current, return a user via response entity, and verify with Postman.

Create the React front end for the inventory system, install arceus for http calls, crypto-js, react-router-dom, and read charts, and structure the project with service, pages, and components.

Learn to build an api service in React that encrypts tokens with CryptoJS, stores credentials in local storage, and implements crud operations for users, products, categories, suppliers, and transactions.

Develop a reusable React pagination component that accepts current page, total pages, and a callback for page changes; it renders page buttons and previous/next controls with appropriate disabled states.