Node.js集成Stripe支付时出现await语法错误求助

错误原因 #

await关键字只能在标记为async的函数内部使用，你写的const calculation = await stripe.tax.calculations.create({...})直接放在全局作用域里，不属于任何async函数，所以Node.js会抛出该错误。

修复你的server.js代码 #

场景1：每次创建Payment Intent时计算税费（推荐） #

税费计算通常和具体支付请求绑定，把计算逻辑放到/prepare-payment-sheet的async路由处理函数里，能保证每次请求生成对应税费结果并传入Payment Intent：

const stripe = require('stripe')('sk_test_', {
  apiVersion: '2024-06-20; payment_intent_with_tax_api_beta=v1;'
});
const express = require('express');
const app = express();

app.use(express.json());

app.post('/prepare-payment-sheet', async (req, res) => {
  try {
    // 1. 生成税费计算结果
    const calculation = await stripe.tax.calculations.create({
      currency: 'usd',
      line_items: [
        {
          amount: 1000,
          reference: 'L1',
          tax_code: 'txcd_99999999',
        },
      ],
      customer_details: {
        address: {
          line1: '920 5th Ave',
          city: 'Seattle',
          state: 'WA',
          postal_code: '98104',
          country: 'US',
        },
        address_source: 'shipping',
      },
    });

    // 2. 创建客户、临时密钥和支付意向
    const customer = await stripe.customers.create();
    const ephemeralKey = await stripe.ephemeralKeys.create(
      { customer: customer.id },
      { apiVersion: '2024-06-20; payment_intent_with_tax_api_beta=v1;' }
    );
    const paymentIntent = await stripe.paymentIntents.create({
      amount: 1099,
      currency: 'usd',
      customer: customer.id,
      automatic_payment_methods: {
        enabled: true,
      },
      async_workflows: {
        inputs: {
          tax: {
            calculation: calculation.id, // 使用实际生成的税费计算ID
          },
        },
      },
    });

    console.log(req.body)
    console.log(paymentIntent) // 修复res.body不存在的错误，改为打印支付意向信息

    res.json({
      paymentIntentID: paymentIntent.id,
      clientSecret: paymentIntent.client_secret,
      ephemeralKey: ephemeralKey.secret,
      customer: customer.id,
      publishableKey: 'pk_test_'
    });
  } catch(e) {
    res.status(400).json({ error: { message: e.message }});
  }
});

app.post('/update-payment-sheet', async (req, res) => {
  try {
    const paymentIntent = await stripe.paymentIntents.update(
      req.body.paymentIntentID,
      {
        amount: req.body.amount,
      }
    );
    console.log(req.body)
    console.log(paymentIntent)
    
    res.json({});
  } catch(e) {
    res.status(400).json({ error: { message: e.message }});
  }
});

app.listen(3000, () => console.log('Running now on port 3000'));
app.get('/', (req,res) => res.json('My API is running'))

额外说明：

• 初始化Stripe时添加了beta版本API参数，确保和后续接口调用版本一致
• 替换了占位符{{CALCULATION_ID}}为实际生成的calculation.id
• 给/update-payment-sheet添加了try-catch，避免未捕获异常导致服务器崩溃

场景2：全局初始化时计算税费（仅测试用） #

如果只是测试需求，想在服务启动时生成一次税费计算ID，可以用自执行async函数包裹全局逻辑：

const stripe = require('stripe')('sk_test_', {
  apiVersion: '2024-06-20; payment_intent_with_tax_api_beta=v1;'
});
const express = require('express');
const app = express();

app.use(express.json());

// 自执行async函数处理全局await逻辑
(async () => {
  try {
    const calculation = await stripe.tax.calculations.create({
      currency: 'usd',
      line_items: [
        {
          amount: 1000,
          reference: 'L1',
          tax_code: 'txcd_99999999',
        },
      ],
      customer_details: {
        address: {
          line1: '920 5th Ave',
          city: 'Seattle',
          state: 'WA',
          postal_code: '98104',
          country: 'US',
        },
        address_source: 'shipping',
      },
    });
    global.calculationId = calculation.id; // 存到全局变量后续使用
    console.log('税费计算ID:', calculation.id);
  } catch(e) {
    console.error('全局税费计算失败:', e.message);
  }
})();

// 后续路由中可通过global.calculationId替换{{CALCULATION_ID}}
// ... 其余路由代码不变

修复Stripe官网示例代码 #

官网示例同样把await用在了全局作用域，只需用自执行async函数包裹即可：

// Set your secret key. Remember to switch to your live secret key in production.
// See your keys here: https://dashboard.stripe.com/apikeys
const stripe = require('stripe')(
  'sk_test_',
  {apiVersion: '2024-06-20; payment_intent_with_tax_api_beta=v1;'}
);

// 自执行async函数包裹逻辑
(async () => {
  try {
    const paymentIntent = await stripe.paymentIntents.create({
      amount: 1000,
      currency: 'usd',
      automatic_payment_methods: {
        enabled: true,
      },
      async_workflows: {
        inputs: {
          tax: {
            calculation: '{{CALCULATION_ID}}', // 替换为实际税费计算ID
          },
        },
      },
    });
    console.log('支付意向ID:', paymentIntent.id);
  } catch(e) {
    console.error('创建支付意向失败:', e.message);
  }
})();

内容的提问来源于stack exchange，提问作者user1233894