Sample code for 30+ languages & platforms
Dart

Amazon SP-API Get Order Items

See more Amazon SP-API Examples

Returns detailed order item information for the order that you specify.

Chilkat Dart Downloads

Dart
import 'package:chilkat/chilkat.dart';

void main() {
  // This example requires the Chilkat API to have been previously unlocked.
  // See Global Unlock Sample for sample code.

  // Gets detailed order item information for a specified order ID
  // The order ID is something like "902-1845936-5435065" and it is the AmazonOrderId returned in the JSON when getting the list of orders.  For example:
  // {
  //   "payload": {
  //     "CreatedBefore": "1.569521782042E9",
  //     "Orders": [
  //       {
  //         "AmazonOrderId": "902-1845936-5435065",
  //         "PurchaseDate": "1970-01-19T03:58:30Z",
  // ...

  // However, when using the sandbox, instead use the explicit keyword TEST_CASE_200
  final orderId = 'TEST_CASE_200';

  final authAws = CkAuthAws();
  authAws.accessKey = 'AWS_ACCESS_KEY';
  authAws.secretKey = 'AWS_SECRET_KEY';
  authAws.serviceName = 'execute-api';
  // Use the region that is correct for your needs.
  authAws.region = 'eu-west-1';

  // First get a restricted data token for the given order ID.
  // This requires an LWA access token which cannot be more than 1 hour old.
  // See Fetch SP-API LWA Access Token
  final jsonLwaToken = CkJsonObject();
  try {
    jsonLwaToken.loadFile('qa_data/tokens/sp_api_lwa_token.json');
  } on ChilkatException {
    print('Failed to load LWA access token.');
    return;
  }

  // Must use the non-sandbox domain for getting the RDT.
  final rest = CkRest();
  try {
    rest.connect('sellingpartnerapi-eu.amazon.com', 443, true, true);
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  rest.setAuthAws(authAws);

  // Add the x-amz-access-token request header.
  final lwaToken = jsonLwaToken.stringOf('access_token');
  rest.clearAllHeaders();
  rest.addHeader('x-amz-access-token', lwaToken);

  // We're going to send a POST with the following JSON body:

  // {
  //   "restrictedResources": [
  //     {
  //       "method": "GET",
  //       "path": "/orders/v0/orders/{orderId}/orderItems",
  //       "dataElements": ["buyerInfo"]
  //     }
  //   ]
  // }

  final sbPath = CkStringBuilder();
  sbPath.append('/orders/v0/orders/');
  sbPath.append(orderId);
  sbPath.append('/orderItems');

  final jsonRc = CkJsonObject();
  jsonRc.updateString('restrictedResources[0].method', 'GET');
  jsonRc.updateString('restrictedResources[0].path', sbPath.getAsString());
  jsonRc.updateString('restrictedResources[0].dataElements[0]', 'buyerInfo');

  final sbRequest = CkStringBuilder();
  jsonRc.emitSb(sbRequest);

  final sbResponse = CkStringBuilder();
  var uri = '/tokens/2021-03-01/restrictedDataToken';
  try {
    rest.fullRequestSb('POST', uri, sbRequest, sbResponse);
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  // Examine the response status.
  var statusCode = rest.responseStatusCode;
  if (statusCode != 200) {
    print('Response status code: $statusCode');
    print('Response status text: ${rest.responseStatusText}');
    print('Response body: ');
    print(sbResponse.getAsString());
    print('Failed.');
    return;
  }

  // Get the restricted data token.
  final jsonResp = CkJsonObject();
  jsonResp.loadSb(sbResponse);
  final restrictedDataToken = jsonResp.stringOf('restrictedDataToken');
  print('Restricted Data Token: $restrictedDataToken');

  // ------------------------------------------------------------------------------------------------------------
  // ------------------------------------------------------------------------------------------------------------
  // Now that we have the RDT, we can use it to get information about the order.
  // 
  // Yes, the SP-API is horribly tedious and painful.  You must use an RDT specifically tailored to each request requiring an RDT,
  // the RDT must not be over an hour old, and if you need to get a new RDT you must get it using an LWA token that itself is not
  // more than an hour old.  If the LWA is more than an hour old, you must get a new one.  Ughhh!!!!!
  // ------------------------------------------------------------------------------------------------------------

  // Disconnect from the non-sandbox domain.  This example will use the sandbox.
  // (The RDT was obtained using the non-sandbox domain.  For some reason, the sandbox domain does not work for getting the RDT.)
  rest.disconnect(100);

  try {
    rest.connect('sandbox.sellingpartnerapi-eu.amazon.com', 443, true, true);
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  rest.setAuthAws(authAws);

  rest.clearAllHeaders();
  rest.addHeader('x-amz-access-token', restrictedDataToken);

  rest.clearAllQueryParams();
  rest.addQueryParam('MarketplaceIds', 'ATVPDKIKX0DER');

  rest.clearAllPathParams();
  rest.addPathParam('{orderId}', orderId);

  uri = '/orders/v0/orders/{orderId}/orderItems';
  try {
    rest.fullRequestNoBodySb('GET', uri, sbResponse);
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  // Examine the response status.
  statusCode = rest.responseStatusCode;
  if (statusCode != 200) {
    print('Response status text: ${rest.responseStatusText}');
    print('Response body: ');
    print(sbResponse.getAsString());
    print('Failed.');
    return;
  }

  // If successful, gets a JSON response such as the following:

  // {
  //   "payload": {
  //     "AmazonOrderId": "902-1845936-5435065",
  //     "OrderItems": [
  //       {
  //         "ASIN": "B00551Q3CS",
  //         "OrderItemId": "05015851154158",
  //         "SellerSKU": "NABetaASINB00551Q3CS",
  //         "Title": "B00551Q3CS [Card Book]",
  //         "QuantityOrdered": 1,
  //         "QuantityShipped": 0,
  //         "ProductInfo": {
  //           "NumberOfItems": 1
  //         },
  //         "ItemPrice": {
  //           "CurrencyCode": "USD",
  //           "Amount": "10.00"
  //         },
  //         "ItemTax": {
  //           "CurrencyCode": "USD",
  //           "Amount": "1.01"
  //         },
  //         "PromotionDiscount": {
  //           "CurrencyCode": "USD",
  //           "Amount": "0.00"
  //         },
  //         "IsGift": false,
  //         "ConditionId": "New",
  //         "ConditionSubtypeId": "New",
  //         "IsTransparency": false,
  //         "SerialNumberRequired": false,
  //         "IossNumber": "",
  //         "DeemedResellerCategory": "IOSS",
  //         "StoreChainStoreId": "ISPU_StoreId",
  //         "BuyerRequestedCancel": {
  //           "IsBuyerRequestedCancel": true,
  //           "BuyerCancelReason": "Found cheaper somewhere else."
  //         }
  //       }
  //     ]
  //   }
  // }

  // Use this online tool to generate parsing code from sample JSON: 
  // Generate Parsing Code from JSON

  final json = CkJsonObject();

  json.loadSb(sbResponse);
  json.emitCompact = false;
  print(json.emit());

  var asin = '';
  var orderItemId = '';
  var sellerSKU = '';
  var title = '';
  var quantityOrdered = 0;
  var quantityShipped = 0;
  var numberOfItems = 0;
  var currencyCode = '';
  var amount = '';
  var itemTaxCurrencyCode = '';
  var itemTaxAmount = '';
  var promotionDiscountCurrencyCode = '';
  var promotionDiscountAmount = '';
  var conditionId = '';
  var conditionSubtypeId = '';
  var iossNumber = '';
  var deemedResellerCategory = '';
  var storeChainStoreId = '';
  var buyerCancelReason = '';

  final amazonOrderId = json.stringOf('payload.AmazonOrderId');
  var i = 0;
  final countI = json.sizeOfArray('payload.OrderItems');
  while (i < countI) {
    json.i = i;
    asin = json.stringOf('payload.OrderItems[i].ASIN');
    orderItemId = json.stringOf('payload.OrderItems[i].OrderItemId');
    sellerSKU = json.stringOf('payload.OrderItems[i].SellerSKU');
    title = json.stringOf('payload.OrderItems[i].Title');
    quantityOrdered = json.intOf('payload.OrderItems[i].QuantityOrdered');
    quantityShipped = json.intOf('payload.OrderItems[i].QuantityShipped');
    numberOfItems = json.intOf('payload.OrderItems[i].ProductInfo.NumberOfItems');
    currencyCode = json.stringOf('payload.OrderItems[i].ItemPrice.CurrencyCode');
    amount = json.stringOf('payload.OrderItems[i].ItemPrice.Amount');
    itemTaxCurrencyCode = json.stringOf('payload.OrderItems[i].ItemTax.CurrencyCode');
    itemTaxAmount = json.stringOf('payload.OrderItems[i].ItemTax.Amount');
    promotionDiscountCurrencyCode = json.stringOf('payload.OrderItems[i].PromotionDiscount.CurrencyCode');
    promotionDiscountAmount = json.stringOf('payload.OrderItems[i].PromotionDiscount.Amount');
    json.boolOf('payload.OrderItems[i].IsGift');
    conditionId = json.stringOf('payload.OrderItems[i].ConditionId');
    conditionSubtypeId = json.stringOf('payload.OrderItems[i].ConditionSubtypeId');
    json.boolOf('payload.OrderItems[i].IsTransparency');
    json.boolOf('payload.OrderItems[i].SerialNumberRequired');
    iossNumber = json.stringOf('payload.OrderItems[i].IossNumber');
    deemedResellerCategory = json.stringOf('payload.OrderItems[i].DeemedResellerCategory');
    storeChainStoreId = json.stringOf('payload.OrderItems[i].StoreChainStoreId');
    json.boolOf('payload.OrderItems[i].BuyerRequestedCancel.IsBuyerRequestedCancel');
    buyerCancelReason = json.stringOf('payload.OrderItems[i].BuyerRequestedCancel.BuyerCancelReason');
    i++;
  }

  print('Success!');
}