Delphi DLL
Delphi DLL
PayPal - Execute Approved PayPal Payment
See more PayPal Examples
Executes an approved PayPal payment. (This is for executing an approved PayPal payment, not a credit card payment.)Note: This example requires Chilkat v9.5.0.65 or greater.
Chilkat Delphi DLL Downloads
uses
Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, StringBuilder, Rest, JsonObject;
...
procedure TForm1.Button1Click(Sender: TObject);
var
success: Boolean;
jsonToken: HCkJsonObject;
sbAuth: HCkStringBuilder;
rest: HCkRest;
bAutoReconnect: Boolean;
json: HCkJsonObject;
sbPath: HCkStringBuilder;
numReplaced: Integer;
sbJsonRequest: HCkStringBuilder;
sbJsonResponse: HCkStringBuilder;
begin
success := False;
// Note: Requires Chilkat v9.5.0.65 or greater..
// This requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.
// Load our previously obtained access token. (see PayPal OAuth2 Access Token)
jsonToken := CkJsonObject_Create();
CkJsonObject_LoadFile(jsonToken,'qa_data/tokens/paypal.json');
// Build the Authorization request header field value.
sbAuth := CkStringBuilder_Create();
// token_type should be "Bearer"
CkStringBuilder_Append(sbAuth,CkJsonObject__stringOf(jsonToken,'token_type'));
CkStringBuilder_Append(sbAuth,' ');
CkStringBuilder_Append(sbAuth,CkJsonObject__stringOf(jsonToken,'access_token'));
// Make the initial connection.
// A single REST object, once connected, can be used for many PayPal REST API calls.
// The auto-reconnect indicates that if the already-established HTTPS connection is closed,
// then it will be automatically re-established as needed.
rest := CkRest_Create();
bAutoReconnect := True;
success := CkRest_Connect(rest,'api.sandbox.paypal.com',443,True,bAutoReconnect);
if (success <> True) then
begin
Memo1.Lines.Add(CkRest__lastErrorText(rest));
Exit;
end;
// ----------------------------------------------------------------------------------------------
// The code above this comment could be placed inside a function/subroutine within the application
// because the connection does not need to be made for every request. Once the connection is made
// the app may send many requests..
// ----------------------------------------------------------------------------------------------
// Build the JSON containing the payer_id
json := CkJsonObject_Create();
CkJsonObject_putEmitCompact(json,False);
CkJsonObject_AppendString(json,'payer_id','RRCYJUTFJGZTA');
Memo1.Lines.Add(CkJsonObject__emit(json));
// The JSON created by the above code:
// {
// "payer_id": "RRCYJUTFJGZTA"
// }
CkRest_AddHeader(rest,'Authorization',CkStringBuilder__getAsString(sbAuth));
CkRest_AddHeader(rest,'Content-Type','application/json');
// The payment ID is passed in the path.
sbPath := CkStringBuilder_Create();
CkStringBuilder_Append(sbPath,'/v1/payments/payment/payment_id/execute');
numReplaced := CkStringBuilder_Replace(sbPath,'payment_id','PAY-4N746561P0587231SKQQK6MY');
// Send the POST request containign the JSON in the request body, and get the JSON response.
sbJsonRequest := CkStringBuilder_Create();
CkJsonObject_putEmitCompact(json,True);
CkJsonObject_EmitSb(json,sbJsonRequest);
sbJsonResponse := CkStringBuilder_Create();
success := CkRest_FullRequestSb(rest,'POST',CkStringBuilder__getAsString(sbPath),sbJsonRequest,sbJsonResponse);
if (success <> True) then
begin
Memo1.Lines.Add(CkRest__lastErrorText(rest));
Exit;
end;
CkJsonObject_putEmitCompact(json,False);
CkJsonObject_LoadSb(json,sbJsonResponse);
Memo1.Lines.Add('Response Status Code = ' + IntToStr(CkRest_getResponseStatusCode(rest)));
// Did we get a 200 success response?
if (CkRest_getResponseStatusCode(rest) <> 200) then
begin
Memo1.Lines.Add(CkJsonObject__emit(json));
Memo1.Lines.Add('Failed.');
Exit;
end;
// Sample JSON response is shown below.
Memo1.Lines.Add(CkJsonObject__emit(json));
Memo1.Lines.Add('success');
// ------------------------------------------------
// A sample JSON response:
// {
// "id": "PAY-4N746561P0587231SKQQK6MY",
// "create_time": "2014-09-22T23:22:27Z",
// "update_time": "2014-09-22T23:31:13Z",
// "state": "approved",
// "intent": "sale",
// "payer": {
// "payment_method": "paypal",
// "payer_info": {
// "email": "npurayil-uspr-60@paypal.com",
// "first_name": "Brian",
// "last_name": "Robinson",
// "payer_id": "JMKDKJ4D7DG7G",
// "shipping_address": {
// "line1": "4thFloor",
// "line2": "unit#34",
// "city": "SAn Jose",
// "state": "CA",
// "postal_code": "95131",
// "country_code": "US",
// "phone": "011862212345678",
// "recipient_name": "HelloWorld"
// }
// }
// },
// "transactions": [
// {
// "amount": {
// "total": "30.11",
// "currency": "USD",
// "details": {
// "subtotal": "30.00",
// "tax": "0.07",
// "shipping": "0.03",
// "handling_fee": "1.00",
// "insurance": "0.01",
// "shipping_discount": "-1.00"
// }
// },
// "description": "This is the payment transaction description.",
// "item_list": {
// "items": [
// {
// "name": "hat",
// "sku": "1",
// "price": "3.00",
// "currency": "USD",
// "quantity": "5",
// "description": "Brown color hat",
// "tax": "0.01"
// },
// {
// "name": "handbag",
// "sku": "product34",
// "price": "15.00",
// "currency": "USD",
// "quantity": "1",
// "description": "Black color handbag",
// "tax": "0.02"
// }
// ],
// "shipping_address": {
// "recipient_name": "HelloWorld",
// "line1": "4thFloor",
// "line2": "unit#34",
// "city": "SAn Jose",
// "state": "CA",
// "phone": "011862212345678",
// "postal_code": "95131",
// "country_code": "US"
// }
// },
// "related_resources": [
// {
// "sale": {
// "id": "4XP56210M0797192Y",
// "create_time": "2014-09-22T23:22:27Z",
// "update_time": "2014-09-22T23:31:13Z",
// "amount": {
// "total": "30.11",
// "currency": "USD"
// },
// "payment_mode": "INSTANT_TRANSFER",
// "state": "completed",
// "protection_eligibility": "ELIGIBLE",
// "protection_eligibility_type": "ITEM_NOT_RECEIVED_ELIGIBLE",
// "transaction_fee": {
// "value": "1.75",
// "currency": "USD"
// },
// "parent_payment": "PAY-4N746561P0587231SKQQK6MY",
// "links": [
// {
// "href": "https://api.paypal.com/v1/payments/sale/4XP56210M0797192Y",
// "rel": "self",
// "method": "GET"
// },
// {
// "href": "https://api.paypal.com/v1/payments/sale/4XP56210M0797192Y/refund",
// "rel": "refund",
// "method": "POST"
// },
// {
// "href": "https://api.paypal.com/v1/payments/payment/PAY-4N746561P0587231SKQQK6MY",
// "rel": "parent_payment",
// "method": "GET"
// }
// ]
// }
// }
// ]
// }
// ],
// "links": [
// {
// "href": "https://api.paypal.com/v1/payments/payment/PAY-4N746561P0587231SKQQK6MY",
// "rel": "self",
// "method": "GET"
// }
// ]
// }
CkJsonObject_Dispose(jsonToken);
CkStringBuilder_Dispose(sbAuth);
CkRest_Dispose(rest);
CkJsonObject_Dispose(json);
CkStringBuilder_Dispose(sbPath);
CkStringBuilder_Dispose(sbJsonRequest);
CkStringBuilder_Dispose(sbJsonResponse);
end;