Java

Auth0 Server-to-Server Access Token (Client Credentials flow)

See more HTTP Examples

Demonstrates how to obtain an Auth0 access token using client credentials (client_id and client_secret).

This is just a matter of duplicating this CURL command:

curl --request POST
  --url 'https://chilkat.auth0.com/oauth/token' \
  --header 'content-type: application/json' \
  --data '{"grant_type":"client_credentials","client_id": "xxxx","client_secret": "xxxx","audience": "https://api.example.com/geocoding/v1/"}'

Chilkat2 Java

import com.chilkatsoft.chilkat2.ChilkatException;
import com.chilkatsoft.chilkat2.Http;
import com.chilkatsoft.chilkat2.HttpResponse;
import com.chilkatsoft.chilkat2.JsonObject;

public class ChilkatExample {

    public static void main(String[] args) {
        // This example assumes the Chilkat API to have been previously unlocked.
        // See Global Unlock Sample for sample code.

        // We want to duplicate this curl command:
        //
        // curl --request POST
        //   --url 'https://chilkat.auth0.com/oauth/token' \
        //   --header 'content-type: application/json' \
        //   --data '{"grant_type":"client_credentials","client_id": "my_client_id","client_secret": "my_client_secret","audience": "https://api.example.com/geocoding/v1/"}'

        // Build the JSON body of the request.
        JsonObject json = new JsonObject();
        json.updateString("grant_type", "client_credentials");
        json.updateString("client_id", "AUTH0-CLIENT-ID");
        json.updateString("client_secret", "AUTH0-CLIENT-SECRET");
        json.updateString("audience", "https://api.example.com/geocoding/v1/");

        // IMPORTANT: You would use your own url.  You would not use "chilkat.auth0.com".
        // Instead you would use "your_name.auth0.com"
        Http http = new Http();
        HttpResponse resp = new HttpResponse();
        try {
            http.httpJson("POST", "https://chilkat.auth0.com/oauth/token", json, "application/json", resp);
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        // A 200 response status code indicates success.  In the success case, the response body
        // contains the JSON access token, such as:
        // {
        //   "access_token": "eyJz93a...k4laUWw",
        //   "token_type":"Bearer",
        //   "expires_in":86400
        // }
        //

        System.out.println("response status code = " + resp.getStatusCode());

        // The repsonse is JSON if successful and also JSON for errors.
        JsonObject jsonResp = new JsonObject();
        jsonResp.setEmitCompact(false);
        jsonResp.load(resp.getBodyStr());

        if (resp.getStatusCode() != 200) {
            // The response body contains error information in JSON format.
            System.out.println(jsonResp.emit());

            // An example of an error response:
            //         {
            //           "error": "access_denied",
            //           "error_description": "Client is not authorized to access \"https://api.example.com/geocoding/v1/\". You might probably want to create a \"client-grant\" associated to this API. See: https://auth0.com/docs/api/v2#!/Client_Grants/post_client_grants"
            //         }
            return;
        }

        System.out.println("Success!");
        System.out.println(jsonResp.emit());

        // A successful JSON response body looks like this:

        // {
        //   "access_token": "eyJz93a...k4laUWw",
        //   "token_type":"Bearer",
        //   "expires_in":86400
        // }
    }
}