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

See more Amazon SP-API Examples

Request an LWA access token, make a secure HTTP POST to the LWA authentication server (https://api.amazon.com/auth/o2/token)

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

Chilkat Perl Downloads Perl Module for Windows, MacOS, Linux, Alpine Linux, Solaris

use chilkat();

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

$http = chilkat::CkHttp->new();

# 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

$req = chilkat::CkHttpRequest->new();
$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");

# resp is a HttpResponse
$resp = $http->PostUrlEncoded("https://api.amazon.com/auth/o2/token",$req);
if ($http->get_LastMethodSuccess() == 0) {
    print $http->lastErrorText() . "\r\n";
    exit;
}

$statusCode = $resp->get_StatusCode();
print "Status Code = " . $statusCode . "\r\n";

$json = chilkat::CkJsonObject->new();
$json->Load($resp->bodyStr());

$json->put_EmitCompact(0);
print $json->emit() . "\r\n";

if ($statusCode != 200) {
    print "Failed." . "\r\n";
    exit;
}

# 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");

print "access_token: " . $json->stringOf("access_token") . "\r\n";
print "Success." . "\r\n";