從條帶webhook事件中檢索條帶數據

Question

在java中實現條帶webhook時，我成功地以JSON格式獲取事件對象。 問題是我無法獲得嵌套JSON中的amount，subscription_id，屬性等詳細信息。 從類對象獲取這些值也不可用。 你能告訴我如何提取這些價值觀嗎？

public void handle(HttpServletRequest request) {

    Stripe.apiKey = sk_test_XXXXXXXXXXXXXXXXXXXX;

    String rawJson = "";

    try {
            rawJson = IOUtils.toString(request.getInputStream());
        } 
        catch (IOException ex) {
            System.out.println("Error extracting json value : " + ex.getMessage());
         }
    Event event = APIResource.GSON.fromJson(rawJson, Event.class);
    System.out.println("Webhook event : " + event);

}

我收到以下回復： -

Webhook event : <com.stripe.model.Event@1462134034 id=evt_18qdEBElSMaq70BZlEwdDJG3> JSON: {
  "id": "evt_18qdEBElSMaq70BZlEwdDJG3",
  "api_version": "2016-07-06",
  "created": 1473143919,
  "data": {
    "object": {
      "id": "in_18qcFkElSMaq70BZy1US7o3g",
      "amount_due": 4100,
      "application_fee": null,
      "attempt_count": 1,
      "attempted": true,
      "charge": "ch_18qdEBElSMaq70BZIEQvJTPe",
      "closed": true,
      "created": null,
      "currency": "usd",
      "customer": "cus_95uFN7q2HzHN7j",
      "date": 1473140172,
      "description": null,
      "discount": null,
      "ending_balance": 0,
      "forgiven": false,
      "lines": {
        "data": [
          {
            "id": "sub_95uFmJLQM3jFwP",
            "amount": 4100,
            "currency": "usd",
            "description": null,
            "discountable": true,
            "livemode": false,
            "metadata": {},
            "period": {
              "end": 1473226524,
              "start": 1473140124
            },
            "plan": {
              "id": "aug 19 01",
              "amount": 4100,
              "created": 1472448923,
              "currency": "usd",
              "interval": "day",
              "interval_count": 1,
              "livemode": false,
              "metadata": {},
              "name": "Aug 19 plan. Better than paypal",
              "statement_descriptor": null,
              "trial_period_days": null,
              "statement_description": null
            },
            "proration": false,
            "quantity": 1,
            "subscription": null,
            "type": "subscription"
          }
        ],
        "total_count": 1,
        "has_more": false,
        "request_options": null,
        "request_params": null,
        "url": "/v1/invoices/in_18qcFkElSMaq70BZy1US7o3g/lines",
        "count": null
      },
      "livemode": false,
      "metadata": {},
      "next_payment_attempt": null,
      "paid": true,
      "period_end": 1473140124,
      "period_start": 1473053724,
      "receipt_number": null,
      "starting_balance": 0,
      "statement_descriptor": null,
      "subscription": "sub_95uFmJLQM3jFwP",
      "subscription_proration_date": null,
      "subtotal": 4100,
      "tax": null,
      "tax_percent": null,
      "total": 4100,
      "webhooks_delivered_at": 1473140184
    },
    "previous_attributes": null
  },
  "livemode": false,
  "pending_webhooks": 1,
  "request": null,
  "type": "invoice.payment_succeeded",
  "user_id": null
}

我想得到像customer_id ， subscription_id等的值。但是當我嘗試使用事件對象獲取數據時，我不能簡單地做為event.get.... 我如何提取數據。

Answer 1

Stripe將事件對象發送到您的webhook處理程序。 每個事件對象在其data.object屬性中攜帶另一個對象。 該對象的類型取決於事件的類型：對於charge.*事件，它將是一個充電對象 ，對於invoice.* event，它將是一個發票對象等。

使用Stripe的Java綁定 ，您可以自動獲取正確類型的對象：

StripeObject stripeObject = event.getData().getObject();

stripeObject將自動轉換為正確的類型。

或者，您可以自己進行投射：

if (event.getType().equals("invoice.payment_failed")) {
    Invoice invoice = event.getData().getObject();

Answer 2

好吧，我已經解決了這個問題。 真正的問題是我無法檢索object id ，在我的例子中是invoiceid （in_18qcFkElSMaq70BZy1US7o3g）。 此id是發生事件的ID。 這意味着如果它是payment successful事件，那么object id將是charge id 。 我必須將event對象轉換為map然后獲取所需的屬性。 下面是我為解決問題所做的完整代碼片段。

public void handle(HttpServletRequest request) {   

    Stripe.apiKey = sk_test_XXXXXXXXXXXXXXXXXXXX;

    String rawJson = "";

    try {
         rawJson = IOUtils.toString(request.getInputStream());
    } 
    catch (IOException ex) {
       System.out.println("Error extracting json value : " + ex.getMessage());
    }

    Event event = APIResource.GSON.fromJson(rawJson, Event.class);
    System.out.println("Webhook event : " + event);

    // Converting event object to map
    ObjectMapper m = new ObjectMapper();
    @SuppressWarnings("unchecked")
    Map<String, Object> props = m.convertValue(event.getData(), Map.class);

    // Getting required data
    Object dataMap = props.get("object");

    @SuppressWarnings("unchecked")
    Map<String, String> objectMapper = m.convertValue(dataMap, Map.class);

    String invoiceId = objectMapper.get("id");

    System.out.println("invoideId : " + invoiceId);
}