On hr use curl or simply run the tests in the IDE they have
GET request
curl http://localhost:8080/products
-X method -H headers -d data
POST request for JSON
curl -X POST -H "Content-Type: application/json" -d '{"_id": "006", "name": "My shampoo"}' http://localhost:8080/products/create
DELETE request
curl -X Delete http://localhost:8080/products/delete/006