虽然有很多关于如何实现 iOS 订阅的信息，但我没有找到关于如何将它们与现有订阅网络服务一起使用的信息。
假设我们正在运营一个报纸网站，用户可以在其中创建一个帐户来访问付费内容:
- 一次性付款将在固定期限内解锁内容访问权限，例如3个月
- 订阅功能相同，但如果未取消，将自动续订
一次性付款和订阅均在服务器上销售和管理。
应用:
当然，让用户从我们的 iOS 应用程序中访问付费内容，同时仍然只在网站上管理购买和订阅是没有问题的。然而我们都知道，Apple 几乎破产了，因此迫切需要他们能从开发商那里得到的所有钱。因此，严禁使用在应用程序内宣传订阅并从网站销售的简单解决方案。 我们必须从应用中删除所有指向网站购买的链接，并改为使用应用内购买。
我们如何做到这一点？
问题 1 - 用户有帐户吗？
让我们假设 iOS 应用程序免费提供一些基本功能，不需要任何网络服务连接。只有在使用网络服务且用户拥有帐户时，提供应用内购买以购买网络服务的订阅才有意义。
是否允许检查用户是否有网络服务帐户并将其发送到网页以创建一个？允许隐藏/停用应用内购买选项直到用户登录到网络服务？
问题 2 - 是否已有有效订阅？
如果用户已将 iOS 应用程序连接到网络服务并且用户帐户已经有从网站购买的有效订阅怎么办？
向用户提供应用内购买订阅是没有意义的，因为他会为相同的服务支付两次。在这种情况下可以停用应用内购买吗？
问题 3 - 是否已经有一个事件的 OneTime 包？
如果用户已将 iOS 应用程序连接到 Web 服务并且用户帐户已经从网站购买了有效的 OneTime 包怎么办？
和以前一样，向用户提供应用内购买订阅没有多大意义。当然，Web 服务可以将订阅期添加到 OneTime 包的末尾，但 iOS 订阅将立即开始。因此，iOS 订阅期和 Web 服务订阅期之间可能存在明显的偏移。
避免这种情况的唯一方法是在没有事件的网络应用程序订阅或 OneTime 包时仅提供 iOS 订阅。
这是允许的吗？
...
归根结底，iOS 订阅与现有网络服务订阅之间存在很多潜在问题和冲突。有没有关于如何解决和解决这些问题的信息？
最佳答案
我已经处理过您所描述的相同问题。我有一些应用程序，我们直接从网站销售订阅，也通过应用内购买提供订阅。
我们通过网站向网络访问者销售订阅以及通过应用程序内购订阅来解决这个问题。您可以同时支持这两种订阅，但不能将您的应用用户引导至您的网站进行订阅。
首先，我将根据我们的处理方式解决您列举的问题，然后告诉您我们做了什么。
问题 1:
- 要确定用户是否有帐户，您需要提供登录屏幕，如果他们有帐户就很好，您只需提供内容即可。如果订阅已过期，您将无法隐藏在应用程序购买选项中和/或将他们引导至网站进行订阅。您的应用将因此被拒绝。
问题 2:
- 如果用户登录并已通过网站为帐户付费，您只需提供订阅内容即可。如果他们已经订阅并拥有有效帐户，则无需让他们通过该应用订阅。不过，新用户需要可以选择创建帐户并通过应用内购买进行订阅。
问题 3:
- 您的后端 API 应该跟踪用户的订阅类型以及订阅是否有效。如果有效，他们将被授予访问内容的权限，如果无效，则应向他们展示续订/订阅流程。
来自 Apple 订阅页面(靠近页面底部 - 请参阅此答案底部的链接)
Subscriptions Purchased Outside of an App Subscribers who were acquired outside of your app can read or play content through the app. However, you may not provide external links in your app that allow users to purchase subscriptions outside of the app.
您需要在应用中处理的主要事情是:
- 为现有用户提供登录信息，无论是通过网络还是应用订阅。如果他们有基于网络或基于应用程序购买的有效订阅，请提供内容。如果没有，请提示他们通过应用内购买进行订阅。
- 通过应用为新用户提供注册服务。通过该应用注册的用户将使用应用内购买来支付订阅费用。
- 后端 API 应跟踪/验证通过 IAP 购买的订阅。当应用程序启动时，您可以连接到您的 api，以使用他们的收据验证用户订阅是否仍然有效。如果有效，请提供内容，否则显示您的订阅续订 UI。
如果您决定提供应用内订阅，您将需要使用 Apple 的服务器(服务器端以获得最佳安全性)验证收据，以验证订阅是否有效并提供内容。
以下是我用于服务器端收据验证的 php 脚本。您可能会发现它很有用，或者能够根据您的用例对其进行调整。
<?php
/*
This is an overview of fields found in validated receipts
validated response fields include
- status - 0 if receipt is valid, otherwise error code
- receipt (In app purchase receipt fields)
- quantity - (the qty of items purchased)
- product_id - (the product id of the purchased item)
- transaction_id - (the transaction id for the purchased item)
- original_transaction_id - (the original transactions transaction id. All renewal receipts for auto renew subscriptions have the same value for this field)
- purchase_date - (the most recent purchase/restore date, for auto-renewing subs it's always the date the subscription was purchased or renewed, regardless of restoration)
- original_purchase_date - (the original transactions transactionDate property. For auto-renewing subscriptions its the beginning of the subscription period)
- expires_date - (only present for auto renew purchases, subscription expiration date)
- cancellation_date - (transaction cancelled by Apple support - treat as if no purchase made)
- app_item_id - (uniquely identifies the app that created the transaction, use to differentiate which app gets access)
- version_external_identifier - (uniquely identifies a revision of the application)
- web_order_line_item_id - (primary key for identifying subscription purchases)
// see receipt validation programming guide pg 22 at the bottom for this
- latest_receipt
if receipt being validated is for latest renewal, this value is the same as receipt-data (in the request)
- latest_receipt_info
value is the same as receipt (below, received in validation response) if receipt being validated is for the latest renewal
"latest_receipt_info":[
{
"quantity":"1",
"product_id":"myProductId",
"transaction_id":"transaction_id_goes_here",
"original_transaction_id":"original_id",
"purchase_date":"2015-06-19 13:08:37 Etc/GMT",
"purchase_date_ms":"1434719317000",
"purchase_date_pst":"2015-06-19 06:08:37 America/Los_Angeles",
"original_purchase_date":"2015-06-19 13:08:38 Etc/GMT",
"original_purchase_date_ms":"1434719318000",
"original_purchase_date_pst":"2015-06-19 06:08:38 America/Los_Angeles",
"expires_date":"2015-06-19 13:11:37 Etc/GMT",
"expires_date_ms":"1434719497000",
"expires_date_pst":"2015-06-19 06:11:37 America/Los_Angeles",
"web_order_line_item_id":"line_item_id_here",
"is_trial_period":"true"
},
]
- receipt (App Receipt Fields)
- bundle_id - the apps bundle id
- application_version - the apps version number
- in_app - array of in-app purchase receipts (see receipt validation programming guide p. 24 for more info)
- original_application_version - version of app that was originally purchased (in sandbox always 1.0)
- expiration_date - only for apps in volume purchase program, otherwise receipt does not expire
*/
class ReceiptValidation
{
public $receipt;
public $response_json;
public $response_array;
private $password;
private $request_data;
private $request_json;
private $live_url;
private $sand_url;
public $user;
public $db;
private $debugString;
private $latestReceipt;
public $error;
function __construct($receipt, $user, $db)
{
$this->receipt = $receipt;
$this->db = $db;
$this->user = $user;
// set apples validation urls
$this->live_url = 'https://buy.itunes.apple.com/verifyReceipt';
$this->sand_url = 'https://sandbox.itunes.apple.com/verifyReceipt';
}
public function setupReceiptRequest()
{
// setup in itc as shared secret (this value should be outside the document root)
$password = '';
$this->request_json = '{"receipt-data":"'.$this->receipt.'", "password":"'.$password.'"}';
}
/*!
Sends the receipt to Apple to verify that it's valid.
(Called when user first subscribes and inserts data into db)
*/
function validateIosReceipt($dbProductId)
{
$this->setupReceiptRequest();
$this->validateReceiptOnLive();
$this->verifyResponseStatus();
// get the array of latest receipts
$receipts = $this->response_array['latest_receipt_info'];
// get the most recent one
$this->latestReceipt = end(array_values($receipts));
$productId = $this->latestReceipt['product_id'];
$purchaseDate = $this->latestReceipt['purchase_date'];
$purchaseDateMs = $this->latestReceipt['purchase_date_ms'];
$expiresDate = $this->latestReceipt['expires_date'];
$expiresDateMs = $this->latestReceipt['expires_date_ms'];
$isTrialPeriod = $this->latestReceipt['is_trial_period'];
$transactionId = $this->latestReceipt['transaction_id'];
// get the receipt details we're interested in storing
$tableData = array(
'user_id' => $this->user->uid,
'is_active' => 1,
'product' => $dbProductId,
'product_id' => $productId,
'receipt' => $this->receipt,
'purchase_date' => $purchaseDate,
'purchase_date_ms' => $purchaseDateMs,
'transaction_id' => $transactionId,
'expires_date' => $expiresDate,
'expires_date_ms' => $expiresDateMs,
'is_trial_period' => $isTrialPeriod,
);
// save receipt details to db table (this does initial insert to database for purchase)
$saveStatus = $this->db->saveSubscription($tableData);
// return the status of our save
return $saveStatus;
}
// returns 0 (no change to report), 20 (user has admin provided bonus acct), or 30 (subscription expired)
function validateSubscriptionStatus()
{
// check if they have a bonus status from being granted a free member account
$acctTypeFetch = $this->db->fetchCurrentUserAccountTypeForUser($this->user->uid);
// only run this if the fetch was successful
if (!empty($acctTypeFetch) && $acctTypeFetch != false)
{
// get our result row
$row = $acctTypeFetch[0];
// check for validity
if (isset($row))
{
// get the account type for this user
$currentAcctType = $row['acct_type'];
// '20' is the account type flag for a user that has our promo account
if ($currentAcctType == 20)
{
// this user has a free acct provided by us, no sub needed, return 20 instead of 0 because if we mark an account as promo
// we want the users account to be updated on their device when they close and reopen the app without having to re-login.
return 20;
}
// this user is currently a subscriber, so get their receipt and make sure they're still subscribed
else if ($currentAcctType > 5 && $currentAcctType <= 15)
{
// they don't have a bonus acct & they were at one point subscribed so pull purchase data from db for user
$subscriptionData = $this->db->retrieveSubscriptionDataForUserWithID($this->user->uid);
// the user actually has purchased a subscription in the past so check if they are still subscribed
if (!empty($subscriptionData) && $subscriptionData != false)
{
// get our row of data
$subInfo = $subscriptionData[0];
// set $this->receipt with fetched receipt
$this->receipt = $subInfo['receipt'];
// setup our request data to verify with Apple
$this->setupReceiptRequest();
// validate receipt and check expires date
$this->validateReceiptOnLive();
$this->verifyResponseStatus();
# get the array of latest receipts
$receipts = $this->response_array['latest_receipt_info'];
if (!empty($receipts) && $receipts != NULL)
{
# get the most recent one
$this->latestReceipt = end(array_values($receipts));
$productId = $this->latestReceipt['product_id'];
$purchaseDate = $this->latestReceipt['purchase_date'];
$purchaseDateMs = $this->latestReceipt['purchase_date_ms'];
$expiresDate = $this->latestReceipt['expires_date'];
$expiresDateMs = $this->latestReceipt['expires_date_ms'];
$isTrialPeriod = $this->latestReceipt['is_trial_period'];
$transactionId = $this->latestReceipt['transaction_id'];
# get current time in ms
$now = time();
// check if user cancelled subscription, if they did update appropriate tables with account status
if ($now > $expiresDateMs)
{
// subscription expired, update database
$updateDB = $this->db->updateAccountSubscriptionStatusAsExpired($this->user->uid);
// return expired acct_type key
return 30;
}
}
}
}
}
}
// user never subscribed or their subscription is current
// no action needed
return 0;
}
function validateReceiptOnLive()
{
$this->response_json = $this->remote_request($this->live_url, $this->request_json);
$this->response_array = json_decode($this->response_json, true);
}
function validateReceiptOnSandbox()
{
$this->response_json = $this->remote_request($this->sand_url, $this->request_json);
$this->response_array = json_decode($this->response_json, true);
}
/*!
Checks for error 21007 or 21008, meaning that we sent it to the wrong verification server, if we sent to the wrong server it retries by sending to the other server
for verification
*/
function verifyResponseStatus()
{
if (! (isset($this->response_array['status'])))
{
// something went wrong,
// TODO: set an error and bail
return;
}
switch ($this->response_array['status'])
{
case 0:
# receipt is valid
break;
case 21000:
# App store could not read json object provided
$this->error = "App store couldn't read json.";
break;
case 21002:
# data in receipt-data was malformed or missing
$this->error = "Receipt data malformed or missing.";
break;
case 21003:
# receipt could not be authenticated
$this->error = "Receipt could not be authenticated";
break;
case 21004:
# shared secret does not match secret on file
$this->error = "Shared secret error";
break;
case 21005:
# receipt server is not currently available
$this->error = "Receipt server unavailable";
break;
case 21006:
# receipt is valid but subscription has expired
$this->error = "Subscription expired";
break;
case 21007:
# receipt is a sandbox receipt but sent to production server. Resubmit receipt verification to sandbox
$this->validateReceiptOnSandbox();
break;
case 21008:
# receipt is a production receipt but sent to the sandbox server. Resubmit receipt verification to production
$this->validateReceiptOnLive();
break;
default:
# unknown error code
break;
}
}
function remote_request($url, $data)
{
$curl_handle = curl_init($url);
if(!$curl_handle) return false;
curl_setopt($curl_handle, CURLOPT_RETURNTRANSFER, true);
curl_setopt($curl_handle, CURLOPT_POST, true);
curl_setopt($curl_handle, CURLOPT_POSTFIELDS, $data);
// curl_setopt($curl_handle, CURLOPT_SSL_VERIFYHOST, 0);
// curl_setopt($curl_handle, CURLOPT_SSL_VERIFYPEER, false);
$output = curl_exec($curl_handle);
curl_close($curl_handle);
return $output;
}
}
?>
在您的应用中，您可以像这样在购买后获得收据:
swift 4
private func loadReceipt() -> Data? {
guard let url = Bundle.main.appStoreReceiptURL else {
return nil
}
do {
let data = try Data(contentsOf: url)
return data
} catch {
print("\(self) Error loading receipt data: \(error.localizedDescription)")
return nil
}
}
然后通过生成类似这样的请求将其发送到您的服务器:
// get your receipt data
guard let data = loadReceipt() else {
// nil response and error
completion(nil, MyError.receiptLoadError)
return
}
// create body data object for the request
let body = [
"receipt-data": data.base64EncodedString()
]
// serialize to Data
guard let bodyData = try? JSONSerialization.data(withJSONObject: body, options: []), let url = URL(string: myServerUrl) else {
// nil response and error
completion(nil, MyError.serializationError)
return
}
var request = URLRequest(url: url)
request.httpMethod = "POST"
request.httpBody = bodyData
// send request with receipt to server
let task = URLSession.shared.dataTask(with: request)....
另外，这里有一些您可能会觉得有用的文档链接:
关于ios - 如何将 iOS 订阅与现有的订阅网络服务一起使用？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/52522162/