Sample code for 30+ languages & platforms
Java

Amazon Pay - Update Checkout Session

See more Amazon Pay Examples

Update the Checkout Session with transaction details.

Chilkat Java Downloads

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;

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

    CkHttp http = new CkHttp();

    //  Implements the following CURL command:

    //  curl "https://pay-api.amazon.com/:version/checkoutSessions/:checkoutSessionId" \
    //  -X PATCH
    //  -H "authorization:Px2e5oHhQZ88vVhc0DO%2FsShHj8MDDg%3DEXAMPLESIGNATURE"
    //  -H "x-amz-pay-date:20201012T235046Z"
    //  -d '{
    //      "webCheckoutDetails": {
    //          "checkoutResultReturnUrl": "https://a.com/merchant-confirm-page"
    //      },
    //      "paymentDetails": {
    //          "paymentIntent": "AuthorizeWithCapture",
    //          "canHandlePendingAuthorization":false,
    //          "softDescriptor": "Descriptor",
    //          "chargeAmount": {
    //              "amount": "1",
    //              "currencyCode": "USD"
    //          }
    //       },
    //      "merchantMetadata": {
    //          "merchantReferenceId": "Merchant reference ID",
    //          "merchantStoreName": "Merchant store name",
    //          "noteToBuyer": "Note to buyer",
    //          "customInformation": "Custom information"
    //      }
    //  }'

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

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

    //  The following JSON is sent in the request body.

    //  {
    //    "webCheckoutDetails": {
    //      "checkoutResultReturnUrl": "https://a.com/merchant-confirm-page"
    //    },
    //    "paymentDetails": {
    //      "paymentIntent": "AuthorizeWithCapture",
    //      "canHandlePendingAuthorization": false,
    //      "softDescriptor": "Descriptor",
    //      "chargeAmount": {
    //        "amount": "1",
    //        "currencyCode": "USD"
    //      }
    //    },
    //    "merchantMetadata": {
    //      "merchantReferenceId": "Merchant reference ID",
    //      "merchantStoreName": "Merchant store name",
    //      "noteToBuyer": "Note to buyer",
    //      "customInformation": "Custom information"
    //    }
    //  }

    CkJsonObject json = new CkJsonObject();
    json.UpdateString("webCheckoutDetails.checkoutResultReturnUrl","https://a.com/merchant-confirm-page");
    json.UpdateString("paymentDetails.paymentIntent","AuthorizeWithCapture");
    json.UpdateBool("paymentDetails.canHandlePendingAuthorization",false);
    json.UpdateString("paymentDetails.softDescriptor","Descriptor");
    json.UpdateString("paymentDetails.chargeAmount.amount","1");
    json.UpdateString("paymentDetails.chargeAmount.currencyCode","USD");
    json.UpdateString("merchantMetadata.merchantReferenceId","Merchant reference ID");
    json.UpdateString("merchantMetadata.merchantStoreName","Merchant store name");
    json.UpdateString("merchantMetadata.noteToBuyer","Note to buyer");
    json.UpdateString("merchantMetadata.customInformation","Custom information");

    CkStringBuilder sbRequestBody = new CkStringBuilder();
    json.EmitSb(sbRequestBody);

    //  Load your Amazon Pay private key.  
    //  There are many other ways to load private keys into the Chilkat private key object, such as from different formats,
    //  or from in-memory strings or bytes.
    CkPrivateKey privKey = new CkPrivateKey();
    success = privKey.LoadPemFile("C:/someDir/myAmazonPayPrivateKey.pem");
    if (success == false) {
        System.out.println(privKey.lastErrorText());
        return;
        }

    //  Provide your Amazon Pay private key and Public Key ID 
    //  Use your public key ID here.  It must be the one associated with the private key.
    //  Note: The SetAuthPrivateKey method was added in Chilkat v9.5.0.89
    String publicKeyId = "SANDBOX-AHEGSJCM3L2S637RBGABLAFW";
    success = http.SetAuthPrivateKey(publicKeyId,privKey);
    if (success == false) {
        System.out.println(http.lastErrorText());
        return;
        }

    //  Note: When the private key is provided as shown above, Chilkat will automatically add the required x-amz-pay-* headers to the HTTP request,
    //  and will also sign the request.  Nothing more is needed.
    //  Chilkat automatically generates and adds the following headers:
    //  
    //  x-amz-pay-date
    //  x-amz-pay-host
    //  x-amz-pay-region
    //  Authorization

    http.put_Accept("application/json");

    success = http.SetUrlVar("sessionId","62b7d028-6c7c-4a43-b077-3897dff27c5b");
    //  To use the live system, replace "sandbox" with "live" in the URL passed to HttpSb.
    //  Also, make sure to use the correct region: pay-api.amazon.com, pay-api.amazon.eu, or pay-api.amazon.jp
    CkHttpResponse resp = new CkHttpResponse();
    success = http.HttpSb("PATCH","https://pay-api.amazon.eu/sandbox/v2/checkoutSessions/{$sessionId}",sbRequestBody,"utf-8","application/json",resp);
    if (success == false) {
        System.out.println(http.lastErrorText());
        return;
        }

    CkStringBuilder sbResponseBody = new CkStringBuilder();
    resp.GetBodySb(sbResponseBody);
    CkJsonObject jResp = new CkJsonObject();
    jResp.LoadSb(sbResponseBody);
    jResp.put_EmitCompact(false);

    //  If the status code is not equal to 200, this will display error information.
    System.out.println("Response Body:");
    System.out.println(jResp.emit());

    int respStatusCode = resp.get_StatusCode();
    System.out.println("Response Status Code = " + respStatusCode);
    if (respStatusCode != 200) {

        //  A sample response body for the case where the session ID does not exist:
        //  	{
        //  	  "reasonCode": "ResourceNotFound",
        //  	  "message": "Resource you are trying to access is not available. Requested path '/sandbox/v2/checkoutSessions/bd504926-f659-4ad7-a1a9-9a747aaf5275'"
        //  	}

        System.out.println("Failed.");
        return;
        }

    //  Sample JSON response:
    //  (Sample code for parsing the JSON response is shown below)

    //  {
    //    "checkoutSessionId": "ada3f397-7d4b-4a55-abac-786685c02d8b",
    //    "webCheckoutDetails": {
    //      "checkoutReviewReturnUrl": "https://a.com/merchant-review-page",
    //      "checkoutResultReturnUrl": "https://a.com/merchant-confirm-page",
    //      "checkoutCancelUrl": null,
    //      "amazonPayRedirectUrl": "https://pay.amazon.com/redirect/checkoutId-1"
    //    },
    //    "productType": "PayAndShip",
    //    "paymentDetails": {
    //      "paymentIntent": "AuthorizeWithCapture",
    //      "canHandlePendingAuthorization": false,
    //      "chargeAmount": {
    //        "amount": "1",
    //        "currencyCode": "USD"
    //      },
    //      "totalOrderAmount": null,
    //      "softDescriptor": "Descriptor",
    //      "presentmentCurrency": "USD",
    //      "allowOvercharge": null,
    //      "extendExpiration": null
    //    },
    //    "merchantMetadata": {
    //      "merchantReferenceId": "Merchant reference ID",
    //      "merchantStoreName": "Merchant store name",
    //      "noteToBuyer": "Note to buyer",
    //      "customInformation": "Custom information"
    //    },
    //    "supplementaryData": null,
    //    "buyer": {
    //      "buyerId": "buyerId",
    //      "name": "name-1",
    //      "email": "name@amazon.com",
    //      "phoneNumber": "800-000-0000",
    //      "primeMembershipTypes": null
    //    },
    //    "billingAddress": {
    //      "name": "Work",
    //      "addressLine1": "440 Terry Ave",
    //      "addressLine2": "",
    //      "addressLine3": "",
    //      "city": "Seattle",
    //      "county": "King",
    //      "district": "Seattle",
    //      "stateOrRegion": "WA",
    //      "postalCode": "98121",
    //      "countryCode": "US"
    //    },
    //    "paymentPreferences": [
    //      {
    //        "paymentDescriptor": "Your selected Amazon payment method"
    //      }
    //    ],
    //    "statusDetails": {
    //      "state": "Open",
    //      "reasonCode": null,
    //      "reasonDescription": null,
    //      "lastUpdatedTimestamp": "20191015T195703Z"
    //    },
    //    "shippingAddress": {
    //      "name": "Susie Smith",
    //      "addressLine1": "10 Ditka Ave",
    //      "addressLine2": "Suite 2500",
    //      "addressLine3": null,
    //      "city": "Chicago",
    //      "county": null,
    //      "district": null,
    //      "stateOrRegion": "IL",
    //      "postalCode": "60602",
    //      "countryCode": "US",
    //      "phoneNumber": "800-000-0000"
    //    },
    //    "platformId": null,
    //    "chargePermissionId": null,
    //    "chargeId": null,
    //    "constraints": [
    //    ],
    //    "creationTimestamp": "20191015T195655Z",
    //    "expirationTimestamp": "20191016T195655Z",
    //    "storeId": "amzn1.application-oa2-client.8b5e45312b5248b69eeaStoreId",
    //    "deliverySpecifications": {
    //      "specialRestrictions": [
    //        "RestrictPOBoxes"
    //      ],
    //      "addressRestrictions": {
    //        "type": "Allowed",
    //        "restrictions": {
    //          "US": {
    //            "statesOrRegions": [
    //              "WA"
    //            ],
    //            "zipCodes": [
    //              "95050",
    //              "93405"
    //            ]
    //          },
    //          "GB": {
    //            "zipCodes": [
    //              "72046",
    //              "72047"
    //            ]
    //          },
    //          "IN": {
    //            "statesOrRegions": [
    //              "AP"
    //            ]
    //          },
    //          "JP": {}
    //        }
    //      }
    //    },
    //    "providerMetadata": {
    //      "providerReferenceId": null
    //    },
    //    "releaseEnvironment": "Sandbox"
    //  }

    //  Sample code for parsing the JSON response...
    //  Use the following online tool to generate parsing code from sample JSON:
    //  Generate Parsing Code from JSON

    String paymentDescriptor;
    String strVal;

    String checkoutSessionId = jResp.stringOf("checkoutSessionId");
    String webCheckoutDetailsCheckoutReviewReturnUrl = jResp.stringOf("webCheckoutDetails.checkoutReviewReturnUrl");
    String webCheckoutDetailsCheckoutResultReturnUrl = jResp.stringOf("webCheckoutDetails.checkoutResultReturnUrl");
    String webCheckoutDetailsCheckoutCancelUrl = jResp.stringOf("webCheckoutDetails.checkoutCancelUrl");
    String webCheckoutDetailsAmazonPayRedirectUrl = jResp.stringOf("webCheckoutDetails.amazonPayRedirectUrl");
    String productType = jResp.stringOf("productType");
    String paymentDetailsPaymentIntent = jResp.stringOf("paymentDetails.paymentIntent");
    boolean paymentDetailsCanHandlePendingAuthorization = jResp.BoolOf("paymentDetails.canHandlePendingAuthorization");
    String paymentDetailsChargeAmountAmount = jResp.stringOf("paymentDetails.chargeAmount.amount");
    String paymentDetailsChargeAmountCurrencyCode = jResp.stringOf("paymentDetails.chargeAmount.currencyCode");
    String paymentDetailsTotalOrderAmount = jResp.stringOf("paymentDetails.totalOrderAmount");
    String paymentDetailsSoftDescriptor = jResp.stringOf("paymentDetails.softDescriptor");
    String paymentDetailsPresentmentCurrency = jResp.stringOf("paymentDetails.presentmentCurrency");
    String paymentDetailsAllowOvercharge = jResp.stringOf("paymentDetails.allowOvercharge");
    String paymentDetailsExtendExpiration = jResp.stringOf("paymentDetails.extendExpiration");
    String merchantMetadataMerchantReferenceId = jResp.stringOf("merchantMetadata.merchantReferenceId");
    String merchantMetadataMerchantStoreName = jResp.stringOf("merchantMetadata.merchantStoreName");
    String merchantMetadataNoteToBuyer = jResp.stringOf("merchantMetadata.noteToBuyer");
    String merchantMetadataCustomInformation = jResp.stringOf("merchantMetadata.customInformation");
    String supplementaryData = jResp.stringOf("supplementaryData");
    String buyerBuyerId = jResp.stringOf("buyer.buyerId");
    String buyerName = jResp.stringOf("buyer.name");
    String buyerEmail = jResp.stringOf("buyer.email");
    String buyerPhoneNumber = jResp.stringOf("buyer.phoneNumber");
    String buyerPrimeMembershipTypes = jResp.stringOf("buyer.primeMembershipTypes");
    String billingAddressName = jResp.stringOf("billingAddress.name");
    String billingAddressAddressLine1 = jResp.stringOf("billingAddress.addressLine1");
    String billingAddressAddressLine2 = jResp.stringOf("billingAddress.addressLine2");
    String billingAddressAddressLine3 = jResp.stringOf("billingAddress.addressLine3");
    String billingAddressCity = jResp.stringOf("billingAddress.city");
    String billingAddressCounty = jResp.stringOf("billingAddress.county");
    String billingAddressDistrict = jResp.stringOf("billingAddress.district");
    String billingAddressStateOrRegion = jResp.stringOf("billingAddress.stateOrRegion");
    String billingAddressPostalCode = jResp.stringOf("billingAddress.postalCode");
    String billingAddressCountryCode = jResp.stringOf("billingAddress.countryCode");
    String statusDetailsState = jResp.stringOf("statusDetails.state");
    String statusDetailsReasonCode = jResp.stringOf("statusDetails.reasonCode");
    String statusDetailsReasonDescription = jResp.stringOf("statusDetails.reasonDescription");
    String statusDetailsLastUpdatedTimestamp = jResp.stringOf("statusDetails.lastUpdatedTimestamp");
    String shippingAddressName = jResp.stringOf("shippingAddress.name");
    String shippingAddressAddressLine1 = jResp.stringOf("shippingAddress.addressLine1");
    String shippingAddressAddressLine2 = jResp.stringOf("shippingAddress.addressLine2");
    String shippingAddressAddressLine3 = jResp.stringOf("shippingAddress.addressLine3");
    String shippingAddressCity = jResp.stringOf("shippingAddress.city");
    String shippingAddressCounty = jResp.stringOf("shippingAddress.county");
    String shippingAddressDistrict = jResp.stringOf("shippingAddress.district");
    String shippingAddressStateOrRegion = jResp.stringOf("shippingAddress.stateOrRegion");
    String shippingAddressPostalCode = jResp.stringOf("shippingAddress.postalCode");
    String shippingAddressCountryCode = jResp.stringOf("shippingAddress.countryCode");
    String shippingAddressPhoneNumber = jResp.stringOf("shippingAddress.phoneNumber");
    String platformId = jResp.stringOf("platformId");
    String chargePermissionId = jResp.stringOf("chargePermissionId");
    String chargeId = jResp.stringOf("chargeId");
    String creationTimestamp = jResp.stringOf("creationTimestamp");
    String expirationTimestamp = jResp.stringOf("expirationTimestamp");
    String storeId = jResp.stringOf("storeId");
    String deliverySpecificationsAddressRestrictionsType = jResp.stringOf("deliverySpecifications.addressRestrictions.type");
    String providerMetadataProviderReferenceId = jResp.stringOf("providerMetadata.providerReferenceId");
    String releaseEnvironment = jResp.stringOf("releaseEnvironment");
    int i = 0;
    int count_i = jResp.SizeOfArray("paymentPreferences");
    while (i < count_i) {
        jResp.put_I(i);
        paymentDescriptor = jResp.stringOf("paymentPreferences[i].paymentDescriptor");
        i = i+1;
        }

    i = 0;
    count_i = jResp.SizeOfArray("constraints");
    while (i < count_i) {
        jResp.put_I(i);
        i = i+1;
        }

    i = 0;
    count_i = jResp.SizeOfArray("deliverySpecifications.specialRestrictions");
    while (i < count_i) {
        jResp.put_I(i);
        strVal = jResp.stringOf("deliverySpecifications.specialRestrictions[i]");
        i = i+1;
        }

    i = 0;
    count_i = jResp.SizeOfArray("deliverySpecifications.addressRestrictions.restrictions.US.statesOrRegions");
    while (i < count_i) {
        jResp.put_I(i);
        strVal = jResp.stringOf("deliverySpecifications.addressRestrictions.restrictions.US.statesOrRegions[i]");
        i = i+1;
        }

    i = 0;
    count_i = jResp.SizeOfArray("deliverySpecifications.addressRestrictions.restrictions.US.zipCodes");
    while (i < count_i) {
        jResp.put_I(i);
        strVal = jResp.stringOf("deliverySpecifications.addressRestrictions.restrictions.US.zipCodes[i]");
        i = i+1;
        }

    i = 0;
    count_i = jResp.SizeOfArray("deliverySpecifications.addressRestrictions.restrictions.GB.zipCodes");
    while (i < count_i) {
        jResp.put_I(i);
        strVal = jResp.stringOf("deliverySpecifications.addressRestrictions.restrictions.GB.zipCodes[i]");
        i = i+1;
        }

    i = 0;
    count_i = jResp.SizeOfArray("deliverySpecifications.addressRestrictions.restrictions.IN.statesOrRegions");
    while (i < count_i) {
        jResp.put_I(i);
        strVal = jResp.stringOf("deliverySpecifications.addressRestrictions.restrictions.IN.statesOrRegions[i]");
        i = i+1;
        }
  }
}