Android 客户端通过 Firebase 到服务器 Node.js 进行支付

Question

我对所有这些东西有点困惑，我是一名 Android 开发人员，现在我需要在我的应用程序中集成支付，所以我使用了 paypal 网关，但我需要一个服务器，所以我使用 firebase 告诉我我需要使用node.js。我不知道，但我仍然尝试做我在网上找到的东西，这是我的代码，如果有人可以向我解释我错在哪里或者是否有最简单的方法！？谢谢！

public class MainActivity extends AppCompatActivity {

    private static final String CONFIG_ENVIRONMENT = PayPalConfiguration.ENVIRONMENT_SANDBOX;
    private static final String CONFIG_CLIENT_ID =
            "Here there is my actual client id";
    private static final int REQUEST_CODE_PAYMENT = 1;
    private static final int REQUEST_CODE_FUTURE_PAYMENT = 2;
    private static final int REQUEST_CODE_PROFILE_SHARING = 3;
    private static final String TAG = MainActivity.class.getSimpleName();
    private static PayPalConfiguration config = new PayPalConfiguration()
            .environment(CONFIG_ENVIRONMENT)
            .clientId(CONFIG_CLIENT_ID)
            .merchantName("Example Merchant")
            .merchantPrivacyPolicyUri(Uri.parse("https://www.example.com/privacy"))
            .merchantUserAgreementUri(Uri.parse("https://www.example.com/legal"));

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        findViewById(R.id.buyItBtn).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                PayPalPayment thingToBuy = new PayPalPayment(new BigDecimal("0.01"), "USD", "sample item",
                        PayPalPayment.PAYMENT_INTENT_SALE);
                Intent intent = new Intent(MainActivity.this, PaymentActivity.class);
                intent.putExtra(PayPalService.EXTRA_PAYPAL_CONFIGURATION, config);
                intent.putExtra(PaymentActivity.EXTRA_PAYMENT, thingToBuy);
                startActivityForResult(intent, REQUEST_CODE_PAYMENT);
            }
        });
        findViewById(R.id.futurePaymentBtn).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(MainActivity.this, PayPalFuturePaymentActivity.class);
                intent.putExtra(PayPalService.EXTRA_PAYPAL_CONFIGURATION, config);
                startActivityForResult(intent, REQUEST_CODE_FUTURE_PAYMENT);
            }
        });
        findViewById(R.id.profileSharingBtn).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(MainActivity.this, PayPalProfileSharingActivity.class);
                intent.putExtra(PayPalService.EXTRA_PAYPAL_CONFIGURATION, config);
                intent.putExtra(PayPalProfileSharingActivity.EXTRA_REQUESTED_SCOPES, getOauthScopes());
                startActivityForResult(intent, REQUEST_CODE_PROFILE_SHARING);
            }
        });

        Intent intent = new Intent(this, PayPalService.class);
        intent.putExtra(PayPalService.EXTRA_PAYPAL_CONFIGURATION, config);
        startService(intent);
    }

    private PayPalOAuthScopes getOauthScopes() {
        Set scopes = new HashSet(Arrays.asList(PayPalOAuthScopes.PAYPAL_SCOPE_EMAIL, PayPalOAuthScopes.PAYPAL_SCOPE_ADDRESS));
        return new PayPalOAuthScopes(scopes);
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        if (requestCode == REQUEST_CODE_PAYMENT && resultCode == Activity.RESULT_OK) {
            PaymentConfirmation confirm = data.getParcelableExtra(PaymentActivity.EXTRA_RESULT_CONFIRMATION);
            if (confirm != null) {
                try {
                    Log.i(TAG, confirm.toJSONObject().toString(4));
                    Log.i(TAG, confirm.getPayment().toJSONObject().toString(4));
                    //TODO: envoyer 'confirm' et si possible confirm.getPayment() à votre server pour la vérification
                    Toast.makeText(getApplicationContext(), "PaymentConfirmation info received from PayPal", Toast.LENGTH_LONG).show();
                } catch (JSONException e) {
                    Log.e(TAG, "an extremely unlikely failure occurred: ", e);
                }
            }
        } else if (requestCode == REQUEST_CODE_FUTURE_PAYMENT && resultCode == Activity.RESULT_OK) {
            PayPalAuthorization auth =
                    data.getParcelableExtra(PayPalFuturePaymentActivity.EXTRA_RESULT_AUTHORIZATION);
            if (auth != null) {
                String authorization_code = auth.getAuthorizationCode();
                sendAuthorizationToServer(authorization_code);
            }
        } else if (requestCode == REQUEST_CODE_PROFILE_SHARING && resultCode == Activity.RESULT_OK) {
            PayPalAuthorization auth = data.getParcelableExtra(PayPalProfileSharingActivity.EXTRA_RESULT_AUTHORIZATION);
            if (auth != null) {
                String authorization_code = auth.getAuthorizationCode();
                sendAuthorizationToServer(authorization_code);
            }
        }
    }

    private void sendAuthorizationToServer(String auth) {

    }
}

这是我在函数文件夹中 index.js 中的代码：

var braintree = require("braintree");

var express = require('express'),
  app = express();

var gateway = braintree.connect({
  environment: braintree.Environment.Sandbox,
  merchantId: "actual merchand id",
  publicKey: "actual publicKey",
  privateKey: "actual privateKey"
});

var gateway = braintree.connect({
  accessToken: "actual accesstoken"
});

app.get("/client_token", function (req, res) {
  gateway.clientToken.generate({}, function (err, response) {
    res.send(response.clientToken);
  });
});

app.get("/checkout", function (req, res) {
  var nonce = req.body.payment_method_nonce;
  // Use payment method nonce here
});

如果缺少某些文件或代码，请告诉我，以及如何从我的 android 代码调用 index.js 文件中的函数？ 谢谢！

Answer 1

您的 index.js 缺少一个端口，因为它在尝试添加这些行时运行

var port = '3333'; app.set('port', port);

如果您使用节点 js 在本地机器上运行，请尝试访问您的服务器 您将有一个名为 package.json 的文件，确保您在 dependencies 中有 braintree 和 express 然后运行 ​​@ 987654325@ 使用命令node index.js启动服务器

您应该能够使用

访问这两种 get 方法

http://localhost:3333/checkout 或 /client_token

Answer 2

我有两个函数，一个在这里工作，另一个不工作，你能解释一下为什么吗，bigben 不能工作，另一个是 app.get： functions 等于 firebase-functions ！

exports.bigben = functions.https.onRequest((req, res) => {
  const hours = (new Date().getHours() % 12) + 1 // london is UTC + 1hr;
  res.status(200).send(`<!doctype html>
    <head>
      <title>Time</title>
    </head>
    <body>
      ${'BONG '.repeat(hours)}
    </body>
  </html>`);
});

app.get("/client_token", function(req, res) {
  gateway.clientToken.generate({}, function (err, response) {
    res.send(response.clientToken);
  });
});

所以我尝试将第二个重写为第一个，但我最终得到了那个，并且在不知道 js 的情况下我知道这里有问题：

exports.tokenclient = functions.https.onRequest((req, res) =>{
  res.send(response.clientToken);
});