什么是 Webhook？-技术鸭(jishuya.cn)

简单地说，webhook 是一个 API 端点，当事件发生时外部服务调用它。以下是 Web 开发中常用的 webhook 的几个示例：

关键要点是外部服务负责调用您的 webhook。您不必直接在您的应用程序中处理 SMS 消息，您可以依靠 Twilio 将 SMS 消息转换为对您的 API 的 HTTP 请求。

通常像 Twilio 这样的服务会要求您输入 Webhook 的 URL。该 URL 必须是可公开访问的。如果你想暴露 localhost 对于 Twilio webhook，您应该使用像 ngrok 。

一个 PayPal IPN 网络钩子


<code class="language-javascript">use strict;
const express = require(express);
run().catch(err => console.log(err));
async function run() {
  const app = express();
  app.use(require(body-parser).text({ type: () => true }));
  app.all(/ipn, (req, res) => {
    console.log(Got, req.body);
    return res.send(SENT);
  });
  await app.listen(3000);
  console.log(Listening on port 3000);
}</code>
<code class="language-javascript">use strict;

const express = require(express);

run().catch(err => console.log(err));

async function run() {
  const app = express();

  app.use(require(body-parser).text({ type: () => true }));

  app.all(/ipn, (req, res) => {
    console.log(Got, req.body);

    return res.send(SENT);
  });

  await app.listen(3000);
  console.log(Listening on port 3000);
}</code>
use strict;
const express = require(express);
run().catch(err => console.log(err));
async function run() {
  const app = express();
  app.use(require(body-parser).text({ type: () => true }));
  app.all(/ipn, (req, res) => {
    console.log(Got, req.body);
    return res.send(SENT);
  });
  await app.listen(3000);
  console.log(Listening on port 3000);
}
use strict;

const express = require(express);

run().catch(err => console.log(err));

async function run() {
  const app = express();

  app.use(require(body-parser).text({ type: () => true }));

  app.all(/ipn, (req, res) => {
    console.log(Got, req.body);

    return res.send(SENT);
  });

  await app.listen(3000);
  console.log(Listening on port 3000);
}
use strict;

const express = require(express);

run().catch(err => console.log(err));

async function run() {
  const app = express();

  app.use(require(body-parser).text({ type: () => true }));

  app.all(/ipn, (req, res) => {
    console.log(Got, req.body);

    return res.send(SENT);
  });

  await app.listen(3000);
  console.log(Listening on port 3000);
}


使用 PayPal 的 IPN 模拟器和 ngrok，您可以向上述服务器发送测试 webhook：

这是 webhook 通过时您应该看到的输出：
<code>$ node .
Listening on port 3000
Got payment_type=echeck&payment_date=12%3A28%3A46%20Jan%2012%2C%202020%20PST&payment_status=Completed&address_status=confirmed&payer_status=verified&first_name=John&last_name=Smith&payer_email=buyer@paypalsandbox.com&payer_id=TESTBUYERID01&address_name=John%20Smith&address_country=United%20States&address_country_code=US&address_zip=95131&address_state=CA&address_city=San%20Jose&address_street=123%20any%20street&business=seller@paypalsandbox.com&receiver_email=seller@paypalsandbox.com&receiver_id=seller@paypalsandbox.com&residence_country=US&item_name=something&item_number=AK-1234&quantity=1&shipping=3.04&tax=2.02&mc_currency=USD&mc_fee=0.44&mc_gross=12.34&mc_gross_1=12.34&txn_type=web_accept&txn_id=493449894&notify_version=2.1&custom=xyz123&invoice=abc1234&test_ipn=1&verify_sign=AkGoM1YN05HZDh0W4ejvAx3.yitsADMYtkiSuk3NqAk7.VGXP0jlR9WB
</code>
<code>$ node .
Listening on port 3000
Got payment_type=echeck&payment_date=12%3A28%3A46%20Jan%2012%2C%202020%20PST&payment_status=Completed&address_status=confirmed&payer_status=verified&first_name=John&last_name=Smith&payer_email=buyer@paypalsandbox.com&payer_id=TESTBUYERID01&address_name=John%20Smith&address_country=United%20States&address_country_code=US&address_zip=95131&address_state=CA&address_city=San%20Jose&address_street=123%20any%20street&business=seller@paypalsandbox.com&receiver_email=seller@paypalsandbox.com&receiver_id=seller@paypalsandbox.com&residence_country=US&item_name=something&item_number=AK-1234&quantity=1&shipping=3.04&tax=2.02&mc_currency=USD&mc_fee=0.44&mc_gross=12.34&mc_gross_1=12.34&txn_type=web_accept&txn_id=493449894&notify_version=2.1&custom=xyz123&invoice=abc1234&test_ipn=1&verify_sign=AkGoM1YN05HZDh0W4ejvAx3.yitsADMYtkiSuk3NqAk7.VGXP0jlR9WB
</code>
$ node .
Listening on port 3000
Got payment_type=echeck&payment_date=12%3A28%3A46%20Jan%2012%2C%202020%20PST&payment_status=Completed&address_status=confirmed&payer_status=verified&first_name=John&last_name=Smith&payer_email=buyer@paypalsandbox.com&payer_id=TESTBUYERID01&address_name=John%20Smith&address_country=United%20States&address_country_code=US&address_zip=95131&address_state=CA&address_city=San%20Jose&address_street=123%20any%20street&business=seller@paypalsandbox.com&receiver_email=seller@paypalsandbox.com&receiver_id=seller@paypalsandbox.com&residence_country=US&item_name=something&item_number=AK-1234&quantity=1&shipping=3.04&tax=2.02&mc_currency=USD&mc_fee=0.44&mc_gross=12.34&mc_gross_1=12.34&txn_type=web_accept&txn_id=493449894&notify_version=2.1&custom=xyz123&invoice=abc1234&test_ipn=1&verify_sign=AkGoM1YN05HZDh0W4ejvAx3.yitsADMYtkiSuk3NqAk7.VGXP0jlR9WB
$ node .
Listening on port 3000
Got payment_type=echeck&payment_date=12%3A28%3A46%20Jan%2012%2C%202020%20PST&payment_status=Completed&address_status=confirmed&payer_status=verified&first_name=John&last_name=Smith&payer_email=buyer@paypalsandbox.com&payer_id=TESTBUYERID01&address_name=John%20Smith&address_country=United%20States&address_country_code=US&address_zip=95131&address_state=CA&address_city=San%20Jose&address_street=123%20any%20street&business=seller@paypalsandbox.com&receiver_email=seller@paypalsandbox.com&receiver_id=seller@paypalsandbox.com&residence_country=US&item_name=something&item_number=AK-1234&quantity=1&shipping=3.04&tax=2.02&mc_currency=USD&mc_fee=0.44&mc_gross=12.34&mc_gross_1=12.34&txn_type=web_accept&txn_id=493449894&notify_version=2.1&custom=xyz123&invoice=abc1234&test_ipn=1&verify_sign=AkGoM1YN05HZDh0W4ejvAx3.yitsADMYtkiSuk3NqAk7.VGXP0jlR9WB
$ node .
Listening on port 3000
Got payment_type=echeck&payment_date=12%3A28%3A46%20Jan%2012%2C%202020%20PST&payment_status=Completed&address_status=confirmed&payer_status=verified&first_name=John&last_name=Smith&payer_email=buyer@paypalsandbox.com&payer_id=TESTBUYERID01&address_name=John%20Smith&address_country=United%20States&address_country_code=US&address_zip=95131&address_state=CA&address_city=San%20Jose&address_street=123%20any%20street&business=seller@paypalsandbox.com&receiver_email=seller@paypalsandbox.com&receiver_id=seller@paypalsandbox.com&residence_country=US&item_name=something&item_number=AK-1234&quantity=1&shipping=3.04&tax=2.02&mc_currency=USD&mc_fee=0.44&mc_gross=12.34&mc_gross_1=12.34&txn_type=web_accept&txn_id=493449894&notify_version=2.1&custom=xyz123&invoice=abc1234&test_ipn=1&verify_sign=AkGoM1YN05HZDh0W4ejvAx3.yitsADMYtkiSuk3NqAk7.VGXP0jlR9WB


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技术文章

什么是 Webhook？

一个 PayPal IPN 网络钩子

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