Using POST in Rest API just like get to add 2 numbers - rest

Question

I am new to REST and web services. I am trying to add two numbers with the below code.
import javax.ws.rs.GET;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
#Path("/calc")
public class CalcREST {
/*#GET
#Path("/add/{a}/{b}")
#Produces(MediaType.TEXT_PLAIN)
public String addPlainTextPost(#PathParam("a") double a, #PathParam("b") double b) {
return (a + b) + "";
}*/
#POST
#Path("/add/{a}/{b}")
#Produces(MediaType.TEXT_PLAIN)
public String addPlainTextPost(#PathParam("a") double a, #PathParam("b") double b) {
return addPlainText(a,b);
}
public String addPlainText(double a, double b) {
return (a + b) + "";
}
}
I am trying to test using both GET and POST. For both GET and POST I am invoking the APIs as
http://:9999/calcrest/calc/add/1/5
For Get I get the results properly. However If i comment out GET and keep POST, I am not able to get any results, just blank.
Any help would be appreciated.

Answer 1

I am assuming that you are calling this url from a browser and a browser is always going to do a GET on the url. If you want to try POST, you will have to either write a REST client in any one of your preferred languages (javascript, java) or if you are using firefox you can use POSTER plugin to simulate a POST. See here: POSTER.
Here is a quick REST client example (code snippet) in java. I have used jersey REST client.
WebResource webResource = restClient.resource("/calcrest/calc/add");
webResource = webResource.path("1").path("5");
String response = webResource.type(MediaType.TEXT_PLAIN)
.accept(MediaType.TEXT_PLAIN)
.post(ClientResponse.class);
System.out.println("Your addition: "+response);
I hope this helps!