Java Requires Chilkat v11.5.0+

Box: Get a Service Account Token with Client Credentials

See more Box Examples

Obtain a Box service-account token using the client credentials grant. Configure and authorize a Server app first. Load credentials from protected application configuration; do not ship a client secret in a public client.

See the Box API guide for setup and the complete workflow.

Java

import com.chilkatsoft.*;

public class ChilkatExample {

  static {
    try {
        System.loadLibrary("chilkat");
    } catch (UnsatisfiedLinkError e) {
      System.err.println("Native code library failed to load.\n" + e);
      System.exit(1);
    }
  }

  public static void main(String argv[])
  {
    boolean success = false;

    //  Requires Chilkat 11.5.0 or later and a previously unlocked Chilkat bundle.
    //  See Global Unlock Sample.
    //  Guide: Box API Guide.

    success = false;

    CkHttpCurl curl = new CkHttpCurl();
    curl.SetVar("client_id","BOX_CLIENT_ID");
    curl.SetVar("client_secret","BOX_CLIENT_SECRET");
    curl.SetVar("enterprise_id","BOX_ENTERPRISE_ID");
    //  enterprise identifies the app's service account. This is not an admin-user token.
    curl.ClearTargetOutput("*");
    curl.ClearVar("access_token");
    curl.AddTargetOutput("access_token","access_token");
    success = curl.DoYourThing("curl -X POST \"https://api.box.com/oauth2/token\" --data-urlencode \"grant_type=client_credentials\" --data-urlencode \"client_id={{client_id}}\" --data-urlencode \"client_secret={{client_secret}}\" --data-urlencode \"box_subject_type=enterprise\" --data-urlencode \"box_subject_id={{enterprise_id}}\"");
    if ((success != true) || (curl.get_StatusCode() != 200)) {
        System.out.println("Box request failed. HTTP status: " + curl.get_StatusCode());
        System.out.println("Failure reason: " + curl.get_FailReason());
        return;
        }

    if (curl.VarDefined("!") != true) {
        System.out.println("Expected response fields are missing.");
        return;
        }

    //  Keep this token in protected application memory; reacquire it when it expires.
    //  Do not print tokens or the complete token response.
    System.out.println("Service-account access token obtained.");
    curl.ClearTargetOutput("*");
    CkStringBuilder authorizedCommand1 = new CkStringBuilder();
    authorizedCommand1.SetString("curl -X GET \"https://api.box.com/2.0/users/me?fields=id,name,login\" -H \"Authorization: Bearer {{access_token}}\"");
    int headerReplacement1 = authorizedCommand1.Replace("{{access_token}}",curl.getVar("access_token"));
    success = curl.DoYourThing(authorizedCommand1.getAsString());
    if ((success != true) || (curl.get_StatusCode() != 200)) {
        System.out.println("Box request failed. HTTP status: " + curl.get_StatusCode());
        System.out.println("Failure reason: " + curl.get_FailReason());
        System.out.println(curl.responseBodyStr());
        return;
        }

    System.out.println(curl.responseBodyStr());
  }
}