Now that we are familiar with the JSON and XML formats, we can start using them to handle HTTP requests and responses in the context of a Play project.

To exhibit these behaviors, we are going to call an online web service, the iTunes media library, which is available and documented at http://www.apple.com/itunes/affiliates/resources/documentation/itunes-store-web-service-search-api.html.

It returns JSON messages on search invocations. We can, for instance, call the API with the following URL and parameters:

https://itunes.apple.com/search?term=angry+birds&country=se&entity=software

The term parameter filters every item in the library that has to do with Angry Birds and the entity parameter retains only software items. We also apply an additional filter to query only the Swedish App Store.