Installing the Dependency: go get -u github.com/gin-gonic/gin To build Go application: go build -o app To run The App: ./app Retrieving the List of Articles in JSON Format To see our latest updates in action, build and run your application. Then execute the following command: curl -X GET -H "Accept: application/json" http://localhost:8080/ This should return a response as follows: [{"id":1,"title":"Article 1","content":"Article 1 body"},{"id":2,"title":"Article 2","content":"Article 2 body"}] As you can see, our request got a response in the JSON format because we set the Acceptheader to application/json. Retrieving an Article in XML Format Let's now get our application to respond with the details of a particular article in the XML format. To do this, first start your application as mentioned above. Now execute the following command: curl -X GET -H "Accept: application/xml" http://localhost:8080/article/view/1 This should return a response as follows: <article><ID>1</ID><Title>Article 1</Title><Content>Article 1 body</Content></article> As you can see, our request got a response in the XML format because we set the Acceptheader to application/xml.