Understand the Spring Model View Controller (MVC) architecture, how Spring Boot abstracts the complexities of this architecture away through opinionated defaults. Subsequently implement quickly Rest Services that can take advantage of the Spring framework Dependency Injection Framework and built in HTTP payload message converters.
Request Parameters
Provide Request Parameters to Spring RestControllers and understand the key concept of Content Negotiation. Implement Services that provide Json or XML responses and services that receive Json or XML payloads. Write Java clients for services that use the Spring RestTemplate or use Angular JS to access your services.
Controllers
Implement a Spring Controller that will dispatch to a View (HTML Page) rather than a service response in Json or XML