Question

我在以下网站上找到了此代码：

https://devtools-paypal.com/guide/recurring_payment_ec/dotnet?interactive=ON&env=sandbox

代码如下：

SetExpressCheckoutRequestDetailsType ecDetails = new SetExpressCheckoutRequestDetailsType();
ecDetails.ReturnURL = "https://devtools-paypal.com/guide/recurring_payment_ec/dotnet?success=true";
ecDetails.CancelURL = "https://devtools-paypal.com/guide/recurring_payment_ec/dotnet?cancel=true";
ecDetails.PaymentDetails = paymentDetails;

BillingCodeType billingCodeType = (BillingCodeType)EnumUtils.GetValue("RecurringPayments", typeof(BillingCodeType));
BillingAgreementDetailsType baType = new BillingAgreementDetailsType(billingCodeType);
baType.BillingAgreementDescription = "recurringbilling";
ecDetails.BillingAgreementDetails.Add(baType);

SetExpressCheckoutRequestType request = new SetExpressCheckoutRequestType();
request.Version = "104.0";
request.SetExpressCheckoutRequestDetails = ecDetails;

SetExpressCheckoutReq wrapper = new SetExpressCheckoutReq();
wrapper.SetExpressCheckoutRequest = request;
Dictionary<string, string> sdkConfig = new Dictionary<string, string>();
sdkConfig.Add("mode", "sandbox");
sdkConfig.Add("account1.apiUsername", "jb-us-seller_api1.paypal.com");
sdkConfig.Add("account1.apiPassword", "WX4WTU3S8MY44S7F");
sdkConfig.Add("account1.apiSignature", "AFcWxV21C7fd0v3bYYYRCpSSRl31A7yDhhsPUU2XhtMoZXsWHFxu-RWy");
PayPalAPIInterfaceServiceService service = new  PayPalAPIInterfaceServiceService(sdkConfig); 
SetExpressCheckoutResponseType setECResponse = service.SetExpressCheckout(wrapper);

该代码的第一部分负责根据代码参数中指定的方式创建PayPal结算协议。

然后在最后的调用返回一个字符串，如下所示：

https://www.sandbox.paypal.com/cgi-bin/webscr?cmd=_express-checkout&token=EC-4SD42613U5111594L

这会将用户带到paypal网站以确认结算协议，然后用户返回我的网站。

然后，要创建与使用SetExpressCheckout调用创建的结算协议相关联的定期付款配置文件，请使用您在SetExpressCheckout API响应中获得的令牌以及SetExpressCheckout API请求中使用的billingAgreementDescription进行CreateRecurringPaymentsProfile API调用。

代码如下：

 CreateRecurringPaymentsProfileRequestType createRPProfileRequest = new CreateRecurringPaymentsProfileRequestType();
CreateRecurringPaymentsProfileRequestDetailsType createRPProfileRequestDetails = new CreateRecurringPaymentsProfileRequestDetailsType();
createRPProfileRequestDetails.Token = "EC-4SD42613U5111594L";
createRPProfileRequest.CreateRecurringPaymentsProfileRequestDetails = createRPProfileRequestDetails;

RecurringPaymentsProfileDetailsType profileDetails = new RecurringPaymentsProfileDetailsType("2016-010-31T00:00:00:000Z");
profileDetails.RecurringPaymentsProfileDetails = profileDetails;

int frequency = 10;
BasicAmountType paymentAmount = new BasicAmountType((CurrencyCodeType)EnumUtils.GetValue("USD", typeof(CurrencyCodeType)), "1.0");
BillingPeriodType period = (BillingPeriodType)EnumUtils.GetValue("Day", typeof(BillingPeriodType));
BillingPeriodDetailsType paymentPeriod = new BillingPeriodDetailsType(period, frequency, paymentAmount);

ScheduleDetailsType scheduleDetails = new ScheduleDetailsType();
scheduleDetails.Description = "recurringbilling";
scheduleDetails.PaymentPeriod = paymentPeriod;
profileDetails.ScheduleDetails = scheduleDetails;

CreateRecurringPaymentsProfileReq createRPProfileReq = new CreateRecurringPaymentsProfileReq();
createRPProfileReq.CreateRecurringPaymentsProfileRequest = createRPProfileRequest;

Dictionary<string, string> sdkConfig = new Dictionary<string, string>();
sdkConfig.Add("mode", "sandbox");
sdkConfig.Add("account1.apiUsername", "jb-us-seller_api1.paypal.com");
sdkConfig.Add("account1.apiPassword", "WX4WTU3S8MY44S7F");
sdkConfig.Add("account1.apiSignature", "AFcWxV21C7fd0v3bYYYRCpSSRl31A7yDhhsPUU2XhtMoZXsWHFxu-RWy");
PayPalAPIInterfaceServiceService service = new  PayPalAPIInterfaceServiceService(sdkConfig); 
CreateRecurringPaymentsProfileResponseType createRPProfileResponse = service.CreateRecurringPaymentsProfile(createRPProfileReq);

将返回包含PROFILEID和ACK值的响应：

PROFILEID=I-0H1CDRF2NEWB&PROFILESTATUS=ActiveProfile&TIMESTAMP=2016-10-31T15:56:13Z&CORRELATIONID=a5fcc91e86a24&ACK=Success&VERSION=104.0&BUILD=24616352

一旦完成，我将hte ProfileID参数存储到我的数据库中，以便我可以处理未来的订阅......

我的问题是：如何按月/按年管理订阅（取决于用户如何决定每月或每年付费）？

我在想这里有几个场景：

如果用户通过PayPal取消了结算协议怎么办？我应该在每次用户登录时检查订阅状态吗？
PayPal方面的结算可能是自动完成的，或者我必须每1个月/ 1年以某种方式创建付款请求，以便向用户收取使用我网站上的高级服务的费用???

这对我来说仍然非常混乱，因为自从我开始编码以来我第一次遇到这类问题......

有人能帮助我吗？

使用带有.NET的PayPal SDK创建订阅付款

0 个答案: