Spring Web Services

Exercise: Todo REST Client

The objective of this exercise is to implement a RESTful client of the todo web service using the Spring Rest template.

Assignment

1. Preparation
   • Remove the service artifacts from the todo application
   • Remove the JPA annotations from the Todo class
   • Add the org.springframework:spring-web and com.fasterxml.jackson.core:jackson-databind dependencies to the Maven project
2. Client implementation
   • Create a TodoListProxy component that implements the TodoList interface
   • Inject the Spring RestTemplateBuilder and use it to create a RestTemplate object
   • Use the template to send REST requests to the web service (see API Documentation)
   • In the findTodo and updateTodo methods catch the HttpClientErrorException.NotFound exception, get the problem detail from the response body and rethrow a TodoNotFoundException

Solution