REST APIs with Java, Spring Boot and MongoDB

This Java template for building REST APIs with Spring Boot and MongoDB provides a comprehensive set of features and configurations, including multi-document ACID transactions, exception management, aggregation pipelines, Swagger documentation, and more. The template includes a `SpringConfiguration` class that sets up the MongoDB connection and configuration, as well as a `PersonController` that handles exceptions and returns error responses. The example also demonstrates how to use transactions to save multiple documents in a single operation, and how to retrieve the average age of a collection using an aggregation pipeline. Additionally, the template includes Swagger documentation for API endpoints, allowing developers to easily explore and test the APIs.