Я пытаюсь интегрировать Paypal в мой проект .net mvc. Я создаю приложение и добавляю код в web.config и в мой контроллер (см. Код ниже). Я могу сделать одну транзакцию для новой учетной записи, но когда я вызывал другую транзакцию, она возвращала. Транзакция не удалась : удаленный сервер возвратил ошибку: (400) Bad Request.
Здесь ниже мой код web.config
<configSections>
<!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 -->
<section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
<section name="paypal" type="PayPal.SDKConfigHandler, PayPal" />
</configSections>
<!-- PayPal SDK settings -->
<paypal>
<settings>
<add name="mode" value="sandbox" />
<!--<add name="clientId" value="AfLQXEBebCzqXtXyPYW987x5Zg75PXpTgYACmv8i9pMaWiMCN0U-FIkKPngd3WQ4YK9J-_gE1ZfMiQlb" />
<add name="clientSecret" value="EFNJZjqrmGkAY-W4-NmCRq-DgkEmCgRteDY_v4aBf6TTU55ZwARMj0399UfFZ5T7iExAtoqq3tdOuyd" />-->
<add name="clientId" value="AQ3-ATuhAujxd7-Y5BVOKw8fdlIt5KlDul1d0OIJ4hQavS0smxF0Np_MfO6tZXAcuYqklG33yycQnNvj" />
<add name="clientSecret" value="EA77LpQNkL8U6xH96A2VZTKXjdthToF8yFsw4SKRfGmY5iHMxTv_yxJXMxBHCeXVnNFF_EO5UOeDjq1Q" />
</settings>
</paypal>
и ниже мой контроллер, который вызывает PayPal API
public ActionResult PaymentWithPaypal(string Cancel = null)
{
//getting the apiContext
APIContext apiContext = PaypalConfiguration.GetAPIContext();
////try
////{
//A resource representing a Payer that funds a payment Payment Method as paypal
//Payer Id will be returned when payment proceeds or click to pay
string payerId = Request.Params["PayerID"];
if (string.IsNullOrEmpty(payerId))
{
//this section will be executed first because PayerID doesn't exist
//it is returned by the create function call of the payment class
// Creating a payment
// baseURL is the url on which paypal sendsback the data.
string baseURI = Request.Url.Scheme + "://" + Request.Url.Authority + "/Home/PaymentWithPayPal?";
//here we are generating guid for storing the paymentID received in session
//which will be used in the payment execution
var guid = Convert.ToString((new Random()).Next(100000));
//CreatePayment function gives us the payment approval url
//on which payer is redirected for paypal account payment
var createdPayment = this.CreatePayment(apiContext, baseURI + "guid=" + guid);
//get links returned from paypal in response to Create function call
var links = createdPayment.links.GetEnumerator();
string paypalRedirectUrl = null;
while (links.MoveNext())
{
Links lnk = links.Current;
if (lnk.rel.ToLower().Trim().Equals("approval_url"))
{
//saving the payapalredirect URL to which user will be redirected for payment
paypalRedirectUrl = lnk.href;
}
}
// saving the paymentID in the key guid
Session.Add(guid, createdPayment.id);
return Redirect(paypalRedirectUrl);
}
else
{
// This function exectues after receving all parameters for the payment
var guid = Request.Params["guid"];
var executedPayment = ExecutePayment(apiContext, payerId, Session[guid] as string);
//If executed payment failed then we will show payment failure message to user
if (executedPayment.state.ToLower() != "approved")
{
return View("FailureView");
}
}
//}
catch (Exception ex)
{
return View("FailureView");
}
//on successful payment, show success page to user.
return View("SuccessView");
}
private Payment ExecutePayment(APIContext apiContext, string payerId, string paymentId)
{
var paymentExecution = new PaymentExecution()
{
payer_id = payerId
};
this.payment = new Payment()
{
id = paymentId
};
var a = payment.Execute(apiContext, paymentExecution);
return a;
}
private Payment CreatePayment(APIContext apiContext, string redirectUrl)
{
//create itemlist and add item objects to it
var itemList = new ItemList()
{
items = new List<Item>()
};
//Adding Item Details like name, currency, price etc
itemList.items.Add(new Item()
{
name = "Item Name comes here",
currency = "USD",
price = "10",
quantity = "1",
sku = "sku"
});
var payer = new Payer()
{
payment_method = "paypal"
};
// Configure Redirect Urls here with RedirectUrls object
var redirUrls = new RedirectUrls()
{
cancel_url = redirectUrl + "&Cancel=true",
return_url = redirectUrl
};
// Adding Tax, shipping and Subtotal details
var details = new Details()
{
tax = "1",
shipping = "1",
subtotal = "10"
};
//Final amount with details
var amount = new Amount()
{
currency = "USD",
total = "12", // Total must be equal to sum of tax, shipping and subtotal.
details = details
};
var transactionList = new List<Transaction>();
// Adding description about the transaction
transactionList.Add(new Transaction()
{
description = "Transaction description",
invoice_number = "your generated invoice number", //Generate an Invoice No
amount = amount,
item_list = itemList
});
this.payment = new Payment()
{
intent = "sale",
payer = payer,
transactions = transactionList,
redirect_urls = redirUrls
};
// Create a payment using a APIContext
return this.payment.Create(apiContext);
}