HarmonyOS 开发记录：Payment Kit 在美颜相机中的支付集成方案

开发场景需求在"拍摄美颜相机"应用中，Payment Kit 实现：安全支付：滤镜/贴纸等数字商品购买订阅管理：自动续费会员服务全球合规：适配 200+国家地区的支付方式

// 核心实现与代码示例// 商品购买流程// 支付初始化：typescript

import payment from '@ohos.payment';

// 配置支付环境payment.init({merchantId: 'your_merchant_id',country: this.userLocation.country,currency: this.userLocation.currency});

// 商品定义const products = {vintage_filter: {id: 'filter_vintage_2024',type: payment.ProductType.CONSUMABLE,price: '¥6.00'},pro_monthly: {id: 'pro_subscription_month',type: payment.ProductType.SUBSCRIPTION,price: '¥25.00/月'}};// 发起支付请求：typescript

async function purchaseProduct(productId) {try {const order = await payment.createOrder({productId: productId,developerPayload: user_${userId} // 防重复校验});

if (order.paymentState === payment.PaymentState.SUCCESS) {  this.deliverProduct(productId);  await verifyPayment(order);}

} catch (err) {console.error(支付失败: ${err.code});this.showRetryDialog();}}

// 支付结果验证async function verifyPayment(order) {const receipt = await payment.verifyPurchase(order.purchaseToken,order.productId);

if (receipt.valid) {analytics.logPurchase(receipt);}}// 订阅管理// 自动续订处理：typescript

// 监听订阅状态变化payment.on('subscriptionUpdate', (update) => {switch(update.state) {case 'active':this.activatePremiumFeatures();break;case 'expired':this.downgradeToFree();break;case 'grace_period':this.showRenewReminder();}});

// 恢复购买入口Button('恢复订阅').onClick(async () => {const subs = await payment.getSubscriptions();if (subs.some(s => s.productId === 'pro_subscription_month')) {this.activatePremiumFeatures();}});// 全球支付适配// 本地化支付方式：typescript

// 根据地区显示合适支付方式function getLocalPaymentMethods() {const methods = payment.getAvailableMethods();

// 中国区优先显示if (this.userLocation.country === 'CN') {return methods.sort((a, b) =>a.type === 'HUAWEI_PAY' ? -1 : 1);}// 欧洲区推荐else if (this.userLocation.region === 'EU') {return methods.filter(m =>['PAYPAL', 'CREDIT_CARD'].includes(m.type));}

return methods;}// 货币自动转换：typescript

// 显示本地化价格async function getLocalizedPrice(productId) {const details = await payment.getProductDetails(productId);return details.localizedPrice ??${details.currency} ${details.price};}

// 关键优化策略// 防欺诈设计typescript

// 启用高级安全验证payment.setSecurityConfig({riskLevel: 'HIGH',fraudDetection: true});

// 可疑订单处理payment.on('riskyOrder', (order) => {this.flagForManualReview(order);});// 离线支付支持typescript

// 缓存待验证收据payment.on('orderCreated', (order) => {if (!navigator.onLine) {storage.push('pending_orders', order);}});

// 网络恢复后验证network.on('online', () => {storage.get('pending_orders').forEach(verifyPayment);});// 促销活动集成typescript

// 检查促销资格async function checkPromotions() {const promos = await payment.getPromotions();this.displayPromoBanners(promos.filter(p => p.isEligible));}

// 兑换优惠码async function redeemPromo(code) {const result = await payment.redeemPromotion(code);if (result.success) {this.showSuccess('优惠已应用！');}}

// 沙箱测试配置typescript

// 开发环境模拟支付if (process.env.NODE_ENV === 'development') {payment.enableSandboxMode({testCards: {success: '华为测试卡号',failure: '模拟失败卡号'}});}// 退款处理typescript

// 监听退款事件payment.on('refundIssued', (order) => {this.revokeProduct(order.productId);this.sendRefundEmail(order);});// 税务合规typescript

// 自动计算税费function getTaxInclusivePrice(product) {return payment.calculateTax({productId: product.id,region: this.userLocation.region}).then(tax => {return product.price * (1 + tax.rate);});}