LAB | SpringBoot REST API

Instructions

1. Fork this repo.
2. Clone your fork to your local machine.
3. Solve the challenges.

Deliverables

• Upon completion, add your solution to git.
• Then commit to git and push to your repo on GitHub.
• Make a pull request and paste the pull request link in the submission field in the Student Portal.

Tasks

1. Create a Spring Boot application using Spring Initializr with the following dependencies:

   • Spring Web
   • Spring Boot DevTools
   • Spring Boot Starter Validation

2. Create a Product class with the following validated properties:

   • name (not blank, min length 3)
   • price (positive number)
   • category (not blank)
   • quantity (positive number)

3. Create a ProductService class that manages a List of Products and has methods to:

   • Add a new product
   • Get all products
   • Get product by name
   • Update product
   • Delete product
   • Get products by category
   • Get products by price range

4. Create a ProductController class that:

   • Uses constructor injection for the ProductService
   • Requires an "API-Key" header for all requests (value: "123456")
   • Has the following endpoints:
     • POST /products - Create new product
     • GET /products - Get all products
     • GET /products/{name} - Get product by name
     • PUT /products/{name} - Update product
     • DELETE /products/{name} - Delete product
     • GET /products/category/{category} - Get products by category
     • GET /products/price?min={min}&max={max} - Get products by price range

5. Create a global exception handler that handles:

   • Validation errors (return proper error messages)
   • Missing API-Key header
   • Product not found
   • Invalid price range

6. Create a Customer class with the following validated properties:

   • name (not blank)
   • email (valid email format)
   • age (minimum 18)
   • address (not blank)

7. Create a CustomerController with endpoints to:

   • Create new customer (with validation)
   • Get all customers
   • Get customer by email
   • Update customer
   • Delete customer

Remember:

• Use proper package structure
• Use constructor injection instead of @Autowired
• Test all endpoints using Postman
• Include appropriate error handling
• Use meaningful variable and method names
• Return appropriate HTTP status codes
• Include validation messages in responses