集成不同的支付网关似乎是一项具有挑战性的任务，但想象一下，如果有一个解决方案使这个过程变得简单而高效，您会感到多么安心。使用设计模式适配器，您将完全控制集成，从而更轻松地维护和扩展您的系统。
现在，想象一下掌握一项技能的力量，它不仅可以节省您的时间，还可以提高代码的质量。在本文中，我们将向您展示如何在使用 node.js 和 fastify 集成支付网关时脱颖而出，fastify 是一项赢得了世界各地开发者青睐的技术。
如果您致力于将自己的技能提升到一个新的水平，那么此内容适合您。让我们一起探索使用 woovi api 创建 pix 费用，以及使您在市场中脱颖而出的其他功能。
我们将介绍使用node.js和fastify集成支付网关。除了其他功能之外，您还将学习如何使用 woovi api 通过 pix 生成费用。
本文是 crazystack node.js 类的一部分，我们在其中使用 node.js 和 fastify 从头开始开发了 rest api。 您可以通过此处和此处的视频跟随本教程的开头部分。
我们将以模块化的方式构建项目，每个支付网关都有自己的实现，但每个人都共享一个共同的合约。我们将使用typescript来确保静态类型和代码安全。
第一步是定义所有支付网关都必须实现的合约。这确保所有网关具有相同的功能和相同的签名，确保一致性。
// src/contracts/paymentgateway.ts
export abstract class paymentgateway {
abstract createcharge(data: any): promise<any>;
abstract deletecharge(id: string): promise<any>;
abstract getcharge(id: string): promise<any>;
abstract createsubscription(data: any): promise<any>;
abstract getsubscription(id: string): promise<any>;
abstract createcustomer(data: any): promise<any>;
abstract getcustomer(id: string): promise<any>;
abstract getchargebycustomer(data: any): promise<any>;
}
woovi 的适配器实现使用 axios 库进行 http 调用。
// src/adapters/wooviadapter.ts
import axios from "axios";
import { paymentgateway } from "../contracts";
import { env } from "../config";
export class woovipaymentgateway extends paymentgateway {
private apikey: string;
constructor(paymentkey: string) {
super();
this.apikey = paymentkey;
}
async deletecharge(id: string): promise<any> {
try {
const response = await axios.delete(
`https://api.openpix.com.br/api/v1/charge/${id}`,
{
headers: { authorization: this.apikey },
}
);
return response?.data;
} catch (e: any) {
return e?.response?.data;
}
}
async getcharge(id: string): promise<any> {
try {
const response = await axios.get(
`https://api.openpix.com.br/api/v1/charge/${id}`,
{
headers: { authorization: this.apikey, "content-type": "application/json" },
}
);
return response?.data;
} catch (e: any) {
return e?.response?.data;
}
}
async createcharge(data: any): promise<any> {
const { correlationid, value, comment } = data;
try {
const { data } = await axios.post(
"https://api.openpix.com.br/api/v1/charge?return_existing=true",
{ correlationid, value, comment },
{
headers: { authorization: this.apikey, "content-type": "application/json" },
}
);
return data;
} catch (e: any) {
return e?.response?.data;
}
}
async createsubscription(body: any): promise<any> {
try {
const { data } = await axios.post(
"https://api.openpix.com.br/api/v1/subscriptions",
body,
{
headers: { authorization: this.apikey, "content-type": "application/json" },
}
);
return data;
} catch (e: any) {
return e?.response?.data;
}
}
async getsubscription(id: string): promise<any> {
try {
const response = await axios.get(
`https://api.openpix.com.br/api/v1/subscriptions/${id}`,
{
headers: { authorization: this.apikey, "content-type": "application/json" },
}
);
return response?.data;
} catch (e: any) {
return e?.response?.data;
}
}
async createcustomer(body: any): promise<any> {
try {
const { data } = await axios.post(
"https://api.openpix.com.br/api/v1/customer",
body,
{
headers: { authorization: this.apikey, "content-type": "application/json" },
}
);
return data;
} catch (e: any) {
return e?.response?.data;
}
}
async getcustomer(id: string): promise<any> {
try {
const response = await axios.get(
`https://api.openpix.com.br/api/v1/customer/${id}`,
{
headers: { authorization: this.apikey, "content-type": "application/json" },
}
);
return response?.data;
} catch (e: any) {
return e?.response?.data;
}
}
async getchargebycustomer(correlationid: string): promise<any> {
try {
const response = await axios.get(
`https://api.openpix.com.br/api/v1/charge?customer=${correlationid}&status=active`,
{
headers: { authorization: this.apikey, "content-type": "application/json" },
}
);
return response?.data;
} catch (e: any) {
return e?.response?.data;
}
}
}
export const makewooviadapter = () => {
return new woovipaymentgateway(env.woovikey);
};
对于stripe，我们使用官方的stripe sdk。
// src/adapters/stripeadapter.ts
import { paymentgateway } from "../contracts";
import { env } from "../config";
import stripe from "stripe";
export class stripepaymentgateway extends paymentgateway {
private stripe: stripe;
constructor(paymentkey: string) {
super();
this.stripe = new stripe(paymentkey, {
apiversion: "2023-10-16",
typescript: true,
});
}
async createprice(amount: number): promise<any> {
try {
const price = await this.stripe.prices.create({
currency: "brl",
unit_amount: amount,
recurring: { interval: "month" },
product_data: { name: "gold plan" },
});
return { price };
} catch (e: any) {
return e?.response?.data;
}
}
async createsubscription(data: any): promise<any> {
try {
const subscription = await this.stripe.subscriptions.create({
customer: data?.customer?.id ?? data?.customer?.correlationid,
items: [{ price: data?.priceid }],
});
return { subscription };
} catch (e: any) {
return e?.response?.data;
}
}
async getsubscription(id: string): promise<any> {
try {
const subscription = await this.stripe.subscriptions.retrieve(id);
return { subscription };
} catch (e: any) {
return e?.response?.data;
}
}
async deletecharge(id: string): promise<any> {
try {
const charge = await this.stripe.paymentintents.update(id, {
metadata: { status: "canceled" },
});
return { charge, status: "ok" };
} catch (e: any) {
return e?.response?.data;
}
}
async getcharge(id: string): promise<any> {
try {
const charge = await this.stripe.paymentintents.retrieve(id);
return { charge };
} catch (e: any) {
return e?.response?.data;
}
}
async createcharge(data: any): promise<any> {
try {
const charge = await this.stripe.paymentintents.create({
amount: number(data?.value),
currency: "brl",
metadata: { metadata: json.stringify(data) },
automatic_payment_methods: { enabled: true },
});
return { charge };
} catch (e: any) {
return e?.response?.data;
}
}
async createcustomer(data: any): promise<any> {
const { email, description } = data;
try {
const customer: stripe.customer = await this.stripe.customers.create({
description,
email
,
});
return { customer };
} catch (e: any) {
return e?.response?.data;
}
}
async getcustomer(id: string): promise<any> {
try {
const customer = await this.stripe.customers.retrieve(id);
return { customer };
} catch (e: any) {
return e?.response?.data;
}
}
}
export const makestripeadapter = () => {
return new stripepaymentgateway(env.stripekeysecret);
};
pagar.me 的文档详细介绍了如何使用其 api 创建客户端。通过向 /customers 端点发出 post 请求，可以在平台上注册新客户。需要注意的是，电子邮件字段是唯一的：如果已经存在具有相同电子邮件的客户，则数据将被更新，而不是创建新记录。此外，持有护照的客户只能使用有效的国际地址进行交易。
现在，根据这个文档解释pagarmeadapter：
pagarmeadapter 是适配器的实现，它允许您与 pagar.me api 交互以创建和管理客户、费用和订阅。它使用 axios 库对 pagar.me api 进行 http 调用。
此函数向 pagar.me /customers 端点发送 post 请求，并在请求正文中传递客户数据。 axios 使用 api 令牌（bearer ${this.apikey}）处理身份验证并返回创建或更新的客户端数据。
使用示例：
async createcustomer(data: any): promise<any> {
try {
const response = await axios.post(
"https://api.pagar.me/1/customers",
data,
{
headers: { authorization: `bearer ${this.apikey}` },
}
);
return response?.data;
} catch (e: any) {
return e?.response?.data;
}
}
此功能对于使用适配器模式直接从 node.js 应用程序在 pagar.me 上注册或更新客户至关重要，确保系统的灵活性和模块化。
有关在 pagar.me 创建客户的更多详细信息，请参阅此处的官方文档。
pagar.me 文档解释了如何使用 api 获取已注册客户的详细信息。具体的端点是 get https://api.pagar.me/core/v5/customers/{customer_id}，其中 {customer_id} 是您要查询的客户的标识符。
pagarmeadapter 中的 getcustomer 函数正是执行此操作。它使用提供的 customer_id 向 pagar.me 端点发出 get 请求。这是它的工作原理：
使用示例：
async getcustomer(id: string): promise<any> {
try {
const response = await axios.get(
`https://api.pagar.me/1/customers/${id}`,
{
headers: { authorization: `bearer ${this.apikey}` },
}
);
return response?.data;
} catch (e: any) {
return e?.response?.data;
}
}
此功能允许您直接从 pagar.me api 获取有关特定客户的详细信息，轻松将此功能集成到您的 node.js 系统中。更多详细信息，您可以参考这里的官方文档。
pagar.me 文档解释了如何使用 api 获取已注册客户的详细信息。具体的端点是 get https://api.pagar.me/core/v5/customers/{customer_id}，其中 {customer_id} 是您要查询的客户的标识符。
pagarmeadapter 中的 getcustomer 函数正是执行此操作。它使用提供的 customer_id 向 pagar.me 端点发出 get 请求。这是它的工作原理：
使用示例：
async getcustomer(id: string): promise<any> {
try {
const response = await axios.get(
`https://api.pagar.me/1/customers/${id}`,
{
headers: { authorization: `bearer ${this.apikey}` },
}
);
return response?.data;
} catch (e: any) {
return e?.response?.data;
}
}
此功能允许您直接从 pagar.me api 获取有关特定客户的详细信息，并轻松将此功能集成到您的 node.js 系统中。更多详细信息，您可以参考这里的官方文档。
我们将按照 pagar.me api 文档扩展 pagarmeadapter 以包含处理信用卡交易的特定方法。我还将提供示例测试负载，您可以使用它来验证每种方法。
这是 pagarmeadapter 方法的实现：
import axios from "axios";
import { paymentgateway } from "../contracts";
import { env } from "../config";
export class pagarmepaymentgateway extends paymentgateway {
private apikey: string;
constructor(paymentkey: string) {
super();
this.apikey = paymentkey;
}
async createcharge(data: any): promise<any> {
try {
const response = await axios.post(
"https://api.pagar.me/1/transactions",
data,
{
headers: { authorization: `bearer ${this.apikey}` },
}
);
return response?.data;
} catch (e: any) {
return e?.response?.data;
}
}
async deletecharge(id: string): promise<any> {
try {
const response = await axios.delete(
`https://api.pagar.me/1/transactions/${id}`,
{
headers: { authorization: `bearer ${this.apikey}` },
}
);
return response?.data;
} catch (e: any) {
return e?.response?.data;
}
}
async getcharge(id: string): promise<any> {
try {
const response = await axios.get(
`https://api.pagar.me/1/transactions/${id}`,
{
headers: { authorization: `bearer ${this.apikey}` },
}
);
return response?.data;
} catch (e: any) {
return e?.response?.data;
}
}
async capturecharge(id: string, amount: number): promise<any> {
try {
const response = await axios.post(
`https://api.pagar.me/1/transactions/${id}/capture`,
{ amount },
{
headers: { authorization: `bearer ${this.apikey}` },
}
);
return response?.data;
} catch (e: any) {
return e?.response?.data;
}
}
async refundcharge(id: string, amount: number): promise<any> {
try {
const response = await axios.post(
`https://api.pagar.me/1/transactions/${id}/refund`,
{ amount },
{
headers: { authorization: `bearer ${this.apikey}` },
}
);
return response?.data;
} catch (e: any) {
return e?.response?.data;
}
}
}
export const makepagarmeadapter = () => {
return new pagarmepaymentgateway(env.pagarmekey);
};
{
"amount": 2990,
"payment_method": "credit_card",
"card_number": "4000000000000010",
"card_cvv": "123",
"card_expiration_date": "1225",
"card_holder_name": "tony stark",
"customer": {
"external_id": "#3311",
"name": "tony stark",
"type": "individual",
"country": "br",
"email": "tonystark@avengers.com",
"documents": [
{
"type": "cpf",
"number": "12345678909"
}
],
"phone_numbers": ["+5511999998888"],
"birthday": "1967-03-01"
},
"billing": {
"name": "tony stark",
"address": {
"country": "br",
"state": "sp",
"city": "sao paulo",
"neighborhood": "bela vista",
"street": "avenida paulista",
"street_number": "1000",
"zipcode": "01310000"
}
},
"items": [
{
"id": "r123",
"title": "chaveiro do tesseract",
"unit_price": 2990,
"quantity": 1,
"tangible": true
}
]
}
{
"amount": 2990
}
{
"amount": 2990
}
这些方法涵盖了您可以使用 pagar.me api 对信用卡交易执行的主要操作。提供的有效负载是可用于测试这些功能的基本示例。
完整代码
// src/adapters/PagarmeAdapter.ts
import axios from "axios";
import { PaymentGateway } from "../contracts";
import { env } from "../config";
export class PagarmePaymentGateway extends PaymentGateway {
private apiKey: string;
constructor(paymentKey: string) {
super();
this.apiKey = paymentKey;
}
async createCharge(data: any): Promise<any> {
try {
const response = await axios.post(
"https://api.pagar.me/1/transactions",
data,
{
headers: { Authorization: `Bearer ${this.apiKey}` },
}
);
return response?.data;
} catch (e: any) {
return e?.response?.data;
}
}
async deleteCharge(id: string): Promise<any> {
try {
const response = await axios.delete(
`https://api.pagar.me/1/transactions/${id}`,
{
headers: { Authorization: `Bearer ${this.apiKey}` },
}
);
return response?.data;
} catch (e: any) {
return e?.response?.data;
}
}
async getCharge(id: string): Promise<any> {
try {
const response = await axios.get(
`https://api.pagar.me/1/transactions/${id}`,
{
headers: { Authorization: `Bearer ${this.apiKey}` },
}
);
return response?.data;
} catch (e: any) {
return e?.response?.data;
}
}
async createSubscription(data: any): Promise<any> {
try {
const response = await axios.post(
"https://api.pagar.me/1/subscriptions",
data,
{
headers: { Authorization: `Bearer ${this.apiKey}` },
}
);
return response?.data;
} catch (e: any) {
return e?.response?.data;
}
}
async getSubscription(id: string): Promise<any> {
try {
const response = await axios.get(
`https://api.pagar.me/1/subscriptions/${id}`,
{
headers: { Authorization: `Bearer ${this.apiKey}` },
}
);
return response?.data;
} catch (e: any) {
return e?.response?.data;
}
}
async createCustomer(data: any): Promise<any> {
try {
const response = await axios.post(
"https://api.pagar.me/1/customers",
data,
{
headers: { Authorization: `Bearer ${this.apiKey}` },
}
);
return response?.data;
} catch (e: any) {
return e?.response?.data;
}
}
async getCustomer(id: string): Promise<any> {
try {
const response = await axios.get(
`https://api.pagar.me/1/customers/${id}`,
{
headers: { Authorization: `Bearer ${this.apiKey}` },
}
);
return response?.data;
} catch (e: any) {
return e?.response?.data;
}
}
async getChargeByCustomer(correlationID: string): Promise<any> {
try {
const response = await axios.get(
`https://api.pagar.me/1/transactions?customer=${correlationID}`,
{
headers: { Authorization: `Bearer ${this.apiKey}` },
}
);
return response?.data;
} catch (e: any) {
return e?.response?.data;
}
}
}
export const makePagarmeAdapter = () => {
return new PagarmePaymentGateway(env.pagarmeKey);
};
使用typescript中的adapter模式实现支付网关，使代码集成和维护变得更加容易。通过采用这种方法，您可以保证系统的灵活性和模块化，从而能够轻松添加或更换网关。
要更详细、更实际地了解如何使用 node.js 和 fastify 实现支付网关，请观看我们在 crazystack node.js 第 99 类中的完整视频教程。不要错过这个加深知识并掌握最佳支付系统开发实践的机会。
?重要链接：
本课程是训练营形式的实用强化培训，重点针对想要改进编写代码方式的全职和高级开发人员。您将学习先进的概念，例如设计模式、清洁架构、tdd和ddd，并通过node.js和fastify应用于实际项目。
了解更多并报名！
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