Legacy Java Order Management System

This is a monolithic legacy Java application for a small retail business, built with Spring Boot, JSP, and JDBC (no REST APIs, no cloud dependencies). It manages customers, products, and orders, and uses a local H2 database. This app is intended for later modernization to Azure.

Features

• Customer management (add/view customers)
• Product catalog (add/view products)
• Order creation (place/view orders)
• Monolithic structure, server-rendered JSP pages
• Local H2 database (no cloud, no containers)

Prerequisites

• Java 11+ (✅ You have Java 23 installed)
• Apache Maven 3.6+ (❌ Not installed - see installation steps below)

Maven Installation

Option 1: Download and Install Maven

1. Download Maven from https://maven.apache.org/download.cgi
2. Extract to a folder (e.g., C:\apache-maven-3.9.6)
3. Add Maven's bin directory to your system PATH
4. Restart your terminal and verify with mvn -version

Option 2: Use Maven Wrapper (No installation needed)

If you prefer not to install Maven globally, you can use the Maven wrapper:

# On Windows PowerShell
.\mvnw.cmd spring-boot:run

How to Run

1. First time setup: Install Maven (see above) or use Maven wrapper
2. Build and run the app:

   # With Maven installed globally:
   mvn spring-boot:run
   
   # OR with Maven wrapper (no Maven installation needed):
   .\mvnw.cmd spring-boot:run

3. Access the application:
   • Open your browser to http://localhost:8080
   • The app will redirect to the Customers page
   • Navigate between Customers, Products, and Orders using the links

Application Pages

• Customers (/customers) - Add and view customers
• Products (/products) - Add and view products with prices
• Orders (/orders) - Create orders and add items to orders
• H2 Console (/h2-console) - View database directly (JDBC URL: jdbc:h2:mem:ordersdb)

Database Access

The H2 in-memory database console is available at http://localhost:8080/h2-console

• JDBC URL: jdbc:h2:mem:ordersdb
• Username: sa
• Password: (leave blank)

Stopping the Application

Press Ctrl+C in the terminal to stop the application.

Modernization Plan

This app will be used as a baseline for modernization to Azure (App Service, Azure SQL, REST APIs, Cosmos DB, etc.).