我正在使用 PayPal Rest API，更具体地说是针对我的项目的 PayPal .Net SDK，我非常喜欢它。
我的问题是直到现在我都无法从 PayPal 收到任何 webhook 通知。
注意：但是 webhook 模拟器确实可以工作，我的处理程序从 PayPal 正确接收 json 帖子。
这些是我采取的步骤：
成功创建新发票后（使用我的贝宝应用程序中的沙箱凭据），我将其发送到测试买家帐户。
我打开通知中的 url 以查看发票并使用买方测试帐户付款。
协调人和买方都会收到发票已成功支付的通知。
我的服务器没有任何反应。我的侦听器端点没有收到任何 webhook 事件请求。
我的应用程序的沙盒配置中有一个活动的 webhook 事件侦听器，用于跟踪所有可能的事件。
PayPal 没有触发任何事件的原因可能是什么？
我还不想切换到 IPN，并且定期从搜索结果中迭代发票列表也不是一个有效的选择。
更新：
由于沙盒 webhook 事件服务器重新启动并运行，我使用以下代码（c# 控制器操作）让它工作。注意 webhook 模拟器发出的 json body 结构与支付发票后发送的不同。因此，我相应地从 PayPal SDK 扩展了 WebHookEvt 对象。
/// <summary>
/// PayPal Webhook handler
/// </summary>
/// <param name="evt"></param>
/// <returns></returns>
[HttpPost]
public ActionResult EventHandler(WebhookEvent evt) { // [System.Web.Http.FromBody]
string json = null;
Capture capture = null;
InvoiceObject invoiceObject = null;
InvoiceExt invoice = null;
WebHookEventCapture captureEvent = null;
WebHookEventInvoice invoiceEvent = null;
if (evt == null) {
return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
} else {
this.logger.Debug(string.Format("***** Webhook event type [{0}] received from PayPal *****", evt.event_type));
logger.Debug(string.Format("Event id: {0}", evt.id));
logger.Debug(string.Format("Event create time: {0}", evt.create_time));
logger.Debug(string.Format("Event type: {0}", evt.event_type));
logger.Debug(string.Format("Event resource: {0}", evt.resource));
logger.Debug(string.Format("Event resource type: {0}", evt.resource_type));
logger.Debug(string.Format("Event summary: {0}", evt.summary));
using (Stream req = Request.InputStream) {
req.Seek(0, System.IO.SeekOrigin.Begin);
using (StreamReader sr = new StreamReader(req)) {
json = sr.ReadToEnd();
}
}
logger.Debug(string.Format("WebHook request json form PayPal: ***{0}***", json));
// Validate webhook event
bool isValid = WebhookEvent.ValidateReceivedEvent(new PayPalPaymentProvider(IPN_SANDBOX_MODE).Context, Request.Headers, json, WEBHOOK_ID_INVOICE_PAID);
logger.Debug(string.Format("Validating webhook event... Is valid = {0}", isValid ? "TRUE" : "FALSE"));
try {
if ("capture".Equals(evt.resource_type)) {
captureEvent = JsonConvert.DeserializeObject<WebHookEventCapture>(json);
capture = captureEvent.resource;
} else if ("invoices".Equals(evt.resource_type)) {
invoiceEvent = JsonConvert.DeserializeObject<WebHookEventInvoice>(json);
invoiceObject = invoiceEvent.resource;
invoice = invoiceObject.invoice;
}
//if (capture != null) {
// logger.Debug(string.Format("Capture amount: {0}", capture.amount));
// logger.Debug(string.Format("Capture create time: {0}", capture.create_time));
// logger.Debug(string.Format("Capture id: {0}", capture.id));
// logger.Debug(string.Format("Capture is final: {0}", capture.is_final_capture.HasValue ? capture.is_final_capture : false));
// logger.Debug(string.Format("Capture parent payment: {0}", capture.parent_payment));
// logger.Debug(string.Format("Capture state: {0}", capture.state));
// logger.Debug(string.Format("Capture transaction fee: {0}", capture.transaction_fee));
// logger.Debug(string.Format("Capture update time: {0}", capture.update_time));
//}
if (isValid && invoice != null) {
logger.Debug(string.Format("Invoice [{0}]", invoice));
logger.Debug(string.Format("Invoice id: [{0}]", invoice.id));
logger.Debug(string.Format("Invoice merchant memo: [{0}]", invoice.merchant_memo));
logger.Debug(string.Format("Invoice date: [{0}]", invoice.invoice_date));
logger.Debug(string.Format("Invoice status: [{0}]", invoice.status));
logger.Debug(string.Format("Invoice total amount: [{0}]", invoice.total_amount != null ? invoice.total_amount.currency + invoice.total_amount.value : "??"));
if (invoice.billingInfo != null) { // billing_info
foreach (var billingInfo in invoice.billingInfo) {
logger.Debug(string.Format("Invoice billing info address: {0}", billingInfo.address ?? new InvoiceAddress()));
logger.Debug(string.Format("Invoice billing info business name: {0}", billingInfo.business_name ?? "??"));
logger.Debug(string.Format("Invoice billing info email: {0}", billingInfo.email ?? "??"));
logger.Debug(string.Format("Invoice billing info first name: {0}", billingInfo.first_name ?? "??"));
logger.Debug(string.Format("Invoice billing info last name: {0}", billingInfo.last_name ?? "??"));
logger.Debug(string.Format("Invoice billing info language: {0}", billingInfo.language ?? "??"));
logger.Debug(string.Format("Invoice billing info notification channel: {0}", billingInfo.notification_channel ?? "??"));
logger.Debug(string.Format("Invoice billing info phone: {0}", billingInfo.phone ?? new Phone()));
}
}
// Update clientproductpayment
SubscriptionRepository db = new SubscriptionRepository();
var subscription = db.Context.ClientProductPayments.Where(
q => invoice.id.Equals(q.TransactionId)).FirstOrDefault();
if (subscription != null) {
logger.Debug(string.Format("Subscription (ClientProductPayment) with transaction_id = [{0}] found", invoice.id));
// Update subscription
db.RegisterPayment(subscription, invoice.id);
logger.Debug(string.Format(
"Subscription (ClientProductPayment) with id = [{0}] updated successfully with transaction id = [{1}]",
subscription.Id, invoice.id));
} else {
logger.Warn(string.Format("Subscription (ClientProductPayment) with transaction_id = [{0}] not found", invoice.id));
}
}
}
catch (Exception e) {
logger.Error(e.Message, e);
return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
}
}
logger.Debug("Sending Http status code 200 response...");
return new HttpStatusCodeResult(HttpStatusCode.OK);
}
扩展 WebHookEvt
using Newtonsoft.Json;
using PayPal.Api;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace PaymentManager.Provider {
public class WebHookEventCapture : WebhookEvent {
[JsonProperty(NullValueHandling = NullValueHandling.Ignore, PropertyName = "resource")]
public new Capture resource { get; set; }
}
public class WebHookEventInvoice : WebhookEvent {
[JsonProperty(NullValueHandling = NullValueHandling.Ignore, PropertyName = "resource")]
public new InvoiceObject resource { get; set; }
}
public class InvoiceObject {
[JsonProperty(NullValueHandling = NullValueHandling.Ignore, PropertyName = "invoice")]
public InvoiceExt invoice { get; set; }
}
public class InvoiceExt : Invoice {
[JsonProperty(NullValueHandling = NullValueHandling.Ignore, PropertyName = "billingInfo")]
public List<BillingInfo> billingInfo { get; set; }
}
}