(JavaScript) Amazon SP-API Request an LWA access token

See more Amazon SP-API Examples

For more information, see https://developer-docs.amazon.com/sp-api/docs/connecting-to-the-selling-partner-api

Note

This example is intended for running within a Chilkat.Js embedded JavaScript engine. All Chilkat JavaScript examples require Chilkat v11.4.0 or greater.

var success = false;

// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

var http = new CkHttp();

// Implements the following CURL command:

// curl -X POST https://example.com/auth/o2/token \
//   -H "Host: api.amazon.com" \
//   -H "Content-Type: application/x-www-form-urlencoded;charset=UTF-8" \
//   -d "grant_type=refresh_token" \
//   -d "refresh_token=Aztr|..." \
//   -d "client_id=foodev" \
//   -d "client_secret=Y76SDl2F"

// Use the following online tool to generate HTTP code from a CURL command
// Convert a cURL Command to HTTP Source Code

var req = new CkHttpRequest();
req.AddParam("grant_type","refresh_token");
req.AddParam("refresh_token","Aztr|...");
req.AddParam("client_id","foodev");
req.AddParam("client_secret","Y76SDl2F");

req.AddHeader("Host","api.amazon.com");

req.HttpVerb = "POST";
req.ContentType = "application/x-www-form-urlencoded";

var resp = new CkHttpResponse();
success = http.HttpReq("https://api.amazon.com/auth/o2/token",req,resp);
if (success == false) {
    console.log(http.LastErrorText);
    return;
}

var statusCode = resp.StatusCode;
console.log("Status Code = " + statusCode);

var json = new CkJsonObject();
json.Load(resp.BodyStr);

json.EmitCompact = false;
console.log(json.Emit());

if (statusCode !== 200) {
    console.log("Failed.");
    return;
}

// Success returns this JSON:

// {
//   "access_token": "Atza|...",
//   "refresh_token": "Atzr|...",
//   "token_type": "bearer",
//   "expires_in": 3600
// }

// Save the JSON token to a file for use in subsequent calls.
// (this example is passing a relative file path.  You don't need to save to a file
// if, for example, you keep the access token in-memory for subsequent use...)
success = json.WriteFile("qa_data/tokens/sp_api_lwa_token.json");

console.log("access_token: " + json.StringOf("access_token"));
console.log("Success.");