【Flutter】App内购支付集成 Google和Apple支付和服务器验证全流程 - IT评测·应用市场-qidao123.com

in_app_purchase: ^3.2.0

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import 'dart:async';
import 'dart:io';
import 'package:in_app_purchase/in_app_purchase.dart';
import 'package:in_app_purchase_storekit/in_app_purchase_storekit.dart';
import 'package:in_app_purchase_android/in_app_purchase_android.dart';
class BuyEngin{
StreamSubscription<List<PurchaseDetails>> _subscription;
InAppPurchase _inAppPurchase;
List<ProductDetails> _products; //内购的商品对象集合
//初始化购买组件
void initializeInAppPurchase() {
// 初始化in_app_purchase插件
_inAppPurchase = InAppPurchase.instance;
//监听购买的事件
final Stream<List<PurchaseDetails>> purchaseUpdated = _inAppPurchase.purchaseStream;
_subscription = purchaseUpdated.listen((purchaseDetailsList) {
_listenToPurchaseUpdated(purchaseDetailsList);
}, onDone: () {
_subscription.cancel();
}, onError: (error) {
error.printError();
print("购买失败了");
});
}
void resumePurchase(){
_inAppPurchase.restorePurchases();
}
/// 加载全部的商品
void buyProduct(String productId) async {
print("请求商品id " + productId);
List<String> _outProducts = [productId];
final bool available = await _inAppPurchase.isAvailable();
if (!available) {
// ToastUtil.showToast("无法连接到商店");
print("无法连接到商店");
return;
}
//开始购买
// ToastUtil.showToast("连接成功-开始查询全部商品");
print("连接成功-开始查询全部商品");
List<String> _kIds = _outProducts;
final ProductDetailsResponse response = await _inAppPurchase.queryProductDetails(_kIds.toSet());
print("商品获取结果 " + response.productDetails.toString());
if (response.notFoundIDs.isNotEmpty) {
// ToastUtil.showToast("无法找到指定的商品");
print("无法找到指定的商品");
// ToastUtil.showToast("无法找到指定的商品数量 " + response.productDetails.length.toString());
return;
}
// 处理查询到的商品列表
List<ProductDetails> products = response.productDetails;
print("products ==== " + products.length.toString());
if (products.isNotEmpty) {
//赋值内购商品集合
_products = products;
}
print("全部商品加载完成了，可以启动购买了,总共商品数量为：${products.length}");
//先恢复可重复购买
// await _inAppPurchase. ();
startPurchase(productId);
}
// 调用此函数以启动购买过程
void startPurchase(String productId) async {
print("购买的商品id为" + productId);
if (_products != null && _products.isNotEmpty) {
// ToastUtil.showToast("准备开始启动购买流程");
try {
ProductDetails productDetails = _getProduct(productId);
print("一切正常，开始购买,信息如下：title: ${productDetails.title} desc:${productDetails.description} "
"price:${productDetails.price} currencyCode:${productDetails.currencyCode} currencySymbol:${productDetails.currencySymbol}");
_inAppPurchase.buyConsumable(purchaseParam: PurchaseParam(productDetails: productDetails));
} catch (e) {
e.printError();
print("购买失败了");
}
} else {
print("当前没有商品无法调用购买逻辑");
}
}
// 根据产品ID获取产品信息
ProductDetails _getProduct(String productId) {
return _products.firstWhere((product) => product.id == productId);
}
/// 内购的购买更新监听
void _listenToPurchaseUpdated(List<PurchaseDetails> purchaseDetailsList) async {
for (PurchaseDetails purchase in purchaseDetailsList) {
if (purchase.status == PurchaseStatus.pending) {
// 等待支付完成
_handlePending();
} else if (purchase.status == PurchaseStatus.canceled) {
// 取消支付
_handleCancel(purchase);
} else if (purchase.status == PurchaseStatus.error) {
// 购买失败
_handleError(purchase.error);
} else if (purchase.status == PurchaseStatus.purchased || purchase.status == PurchaseStatus.restored) {
// ToastUtil.showToast(DataConfig.getShowName("Pay_Success_Tip"));
//完成购买, 到服务器验证
if (Platform.isAndroid) {
var googleDetail = purchase as GooglePlayPurchaseDetails;
checkAndroidPayInfo(googleDetail);
} else if (Platform.isIOS) {
var appstoreDetail = purchase as AppStorePurchaseDetails;
checkApplePayInfo(appstoreDetail);
}
}
}
}
/// 购买失败
void _handleError(IAPError iapError) {
// ToastUtil.showToast("${DataConfig.getShowName("Purchase_Failed")}：${iapError?.code} message${iapError?.message}");
}
/// 等待支付
void _handlePending() {
print("等待支付");
}
/// 取消支付
void _handleCancel(PurchaseDetails purchase) {
_inAppPurchase.completePurchase(purchase);
}
/// Android支付成功的校验
void checkAndroidPayInfo(GooglePlayPurchaseDetails googleDetail) async {
_inAppPurchase.completePurchase(googleDetail);
print("安卓支付交易ID为" + googleDetail.purchaseID);
print("安卓支付验证收据为" + googleDetail.verificationData.serverVerificationData);
}
/// Apple支付成功的校验
void checkApplePayInfo(AppStorePurchaseDetails appstoreDetail) async {
_inAppPurchase.completePurchase(appstoreDetail);
print("Apple支付交易ID为" + appstoreDetail.purchaseID);
print("Apple支付验证收据为" + appstoreDetail.verificationData.serverVerificationData);
}
@override
void onClose() {
if (Platform.isIOS) {
final InAppPurchaseStoreKitPlatformAddition iosPlatformAddition =
_inAppPurchase.getPlatformAddition<InAppPurchaseStoreKitPlatformAddition>();
iosPlatformAddition.setDelegate(null);
}
_subscription.cancel();
}
}

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BuyEngin _buyEngin = BuyEngin();
_buyEngin.initializeInAppPurchase();

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_buyEngin.buyProduct("应用内商品ID");

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{
"error": {
"code": 403,
"message": "The project id used to call the Google Play Developer API has not been linked in the Google Play Developer Console.",
"errors": [
{
"message": "The project id used to call the Google Play Developer API has not been linked in the Google Play Developer Console.",
"domain": "androidpublisher",
"reason": "projectNotLinked"
}
]
}
}

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https://accounts.google.com/o/oauth2/auth?scope=https://www.googleapis.com/auth/androidpublisher&response_type=code&access_type=offline&
redirect_uri=https://api.whatsapp.sg/oauth2callback&client_id=816630003638-5p27m684jfpfa6sh6l9chbpreq2hg9ov.apps.googleusercontent.com

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https://api.whatsapp.sg/oauth2callback?code=4/CpVOd8CljO_gxTRE1M5jtwEFwf8gRD44vrmKNDi4GSS.kr-GHuseD-oZEnp6UADFXm0E0MD3FlAI

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{
'grant_type':'authorization_code',
'code':'4/CpVOd8CljO_gxTRE1M5jtwEFwf8gRD44vrmKNDi4GSS.kr-GHuseD-oZEnp6UADFXm0E0MD3FlAI',//上一步获取的,
'client_id':'816630003638-5p27m684jfpfa6sh6l9chbpreq2hg9ov.apps.googleusercontent.com',
'client_secret':'36WnPnojshgj56uhghj-xCo',
'redirect_uri':'https://api.whatsapp.sg/oauth2callback',
}

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https://accounts.google.com/o/oauth2/token

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{
"access_token" : "",
"token_type" : "Bearer",
"expires_in" : 3600,
"refresh_token" : "1/zaaHNytlC3SEBX7F2cfrHcqJEa3KoAHYeXES6nmho"
}

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https://androidpublisher.googleapis.com/androidpublisher/v3/applications/{packageName}/purchases/products/{productId}/tokens/{purchaseToken}?access_token={$access_token}"

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{
"kind": string,
"purchaseTimeMillis": string,
"purchaseState": integer,
"consumptionState": integer,
"developerPayload": string,
"orderId": string,
"purchaseType": integer,
"acknowledgementState": integer,
"purchaseToken": string,
"productId": string,
"quantity": integer,
"obfuscatedExternalAccountId": string,
"obfuscatedExternalProfileId": string,
"regionCode": string
}

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public function checkGooglePay(){ $google_public_key = "你的公钥(google后台在你的应用下获取)"; $inapp_purchase_data = $_REQUEST['signtureTemp']; $inapp_data_signature = $_REQUEST['signtureDataTemp']; $key = "-----BEGIN PUBLIC KEY-----\n".chunk_split($google_public_key, 64,"\n").'-----END PUBLIC KEY-----'; $key = openssl_pkey_get_public($key); $signature = base64_decode($inapp_data_signature); $ok = openssl_verify($inapp_purchase_data,$signature,$key,OPENSSL_ALGO_SHA1); if (1 == $ok) { // 支付验证乐成！ //进行二次验证，订单查询 // 1.获取access_token（3600秒有效期） $access_token_url = "https://accounts.google.com/o/oauth2/token
"; $data_tmp2 = array( 'grant_type'=>'refresh_token', 'refresh_token'=>'',//长效token 'client_id'=>'', //客户端id 'client_secret'=>'',//客户端密钥 ); $http = new http($access_token_url,'POST',5); $http->setContent($data_tmp2); $result = $http->exec(); $result = json_decode($contents,true); $access_token = $result['access_token']; //2.通过得到access_token 就可以请求谷歌的API接口，得到订单状态 $packageName=""//包名 $productId="" //产物Id $purchaseToken="" $url = "https://androidpublisher.googleapis.com/androidpublisher/v3/applications/{packageName}/purchases/products/{productId}/tokens/{purchaseToken}?access_token={$access_token}"
; $http = new http($url,'GET',5); $http->setContent($data); $contents = $http->exec(); $contents = json_decode($contents,true); if($contents['consumptionState'] == 0 && $contents['purchaseState'] == 0){ //验证乐成购买乐成而且没有消耗 google支付中客户端假如没有进行消耗是不能再次购买该商品 //处理游戏逻辑发钻石，通知客户端进行消耗 }else{ //订单验证失败 } }else{ //署名验证失败 } }

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{
"code" : 401,
"errors" : [ {
"domain" : "androidpublisher",
"message" : "The current user has insufficient permissions to perform the requested operation.",
"reason" : "permissionDenied"
} ],
"message" : "The current user has insufficient permissions to perform the requested operation."
}

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