Question

I have a webservice and I want to send a JSON string to it through the POST method.
Until now the webservices that I have made used the GET method and looked like this:

@GET
@Produces("application/json")
@Path("{name}")

 public String getJson(@PathParam("name") String name) {
    //TODO return proper representation object
     CompanyDatabase cmpdb=new CompanyDatabase();
     String json=cmpdb.searchAgent(name);
    return json;
 }

What changes do I need to make to this method so that it accepts POST data?

Answer 1

To accept input data your method needs to declare what it consumes not produces.

import javax.ws.rs.Consumes;
import javax.ws.rs.POST;
import javax.ws.rs.core.MediaType;

@POST
@Consumes(MediaType.APPLICATION_JSON)
public void acceptsCustomer(Customer c)  {
  // .. do something with the input.
}

The Customer class needs to be annotated properly to convert JSON to a Java POJO. It’s good practise to use the JAX-RS constants for the MediaTypes.

You should also consult the documentation for your JAX-RS provider (eg: RESTEasy or Jersey) as those user guides will probably have examples.