Best(Standard) practice to send multiple parameters to REST GET resource - json

Question

Best(Standard) practice to send multiple parameters to REST get resource - Spring
What's the best practice to send multiple parameters on a REST GET resource call. Normally we can call GET call with path param &/ query. what is the best practice on how to achieve this(second and third).
Ex: /user/{username}/locaction} - Its a standard way
2. /user/{username}/{locaction}/{mobile_umber} - is it a standard way?
3. /user/{username}/{locaction}/{mobile_umber}/{age} - is it a standard way?

Answer 1

In terms of URLs, params tend to be more like RPC where you're invoking a function, e.g.:
/user?username=123
which is more like a traditional RPC call:
Object user = GetUsername(123);
REST represents a state of a resource which can be made up of many "states". Core information such as personal info, where 123 is the username:
/user/123 -> {"name":"Joe Bloggs"}
some aspects of the state of the user could change over time:
/user/123/location -> {"username":"123",lat:123456,lon:54568}
aspects of the user that are unlikely to change rapidly could be included in the core info /user/123 or if they're unlikely to be needed by a client, they can be requested separately:
/user/123/mobile -> {"username":"123",mobile:"345345"}
A User has a location and a User has a mobile and a User has an age. A location doesn't have a mobile or age so those aspects would never come under /user/location. They would come under the URL that represents the object that does have them:
/user/123/age -> {"username":"123", "age":100}
A location can have an accuracy which can either be requested separately:
/user/123/location/accuracy {"accuracy":"-1"}
or more likely included in the response to /user/123/location.
So the REST structure in this case mirrors the object hierarchy, the has parts.
The REST structure could also mirror the business structure:
/user/account
/user/contactinfo
/user/location
it just depends how you want to expose the data that represents a User and their states.