PayPal整合支付
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PayPal整合支付
官方文档https://developer.paypal.com/docs/checkout/standard/integrate/
一. 准备工作
在开发者控制台创建应用，生成clientId 和 clientSecret
- 客户端 ID：通过 PayPal 验证您的帐户并识别沙箱中的应用程序。
- 客户端密钥：授权沙箱中的应用程序。请妥善保管此秘密，不要泄露。
第三方工具：
- JavaScript SDK：添加 PayPal 支持的付款方式。
- Orders REST API：创建、更新、检索、授权和捕获订单（后台操作订单）
- npm：用于安装第三方库的依赖
其他web相关的准备工作参考官网文档
二. 整合支付
1.流程图
2. 整合开始
1.前端安装好库
前端已经安装好相关的库
npm install dotenv express node-fetch
2. 修改对应html
前端html,修改 ”你自己的clientId“
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>PayPal JS SDK Standard Integration</title>
</head>
<body>
<div id="paypal-button-container"></div>
<p id="result-message"></p>
<!-- Replace the "test" client-id value with your client-id -->
<script src="https://www.paypal.com/sdk/js?client-id=你自己的clientId"></script>
<script src="app.js"></script>
</body>
</html>
3.修改app.js代码
app.js 和html放在同一个目录下，如果不放在相同目录，html中需要修改一下app.js的引用路径
window.paypal
.Buttons({
//创建订单
async createOrder() {
try {
//后台创建订单接口
const response = await fetch("http://localhost:8866/createOrder", {
method: "POST",
headers: {
"Content-Type": "application/json",
},
// use the "body" param to optionally pass additional order information
// like product ids and quantities
//请求参数，请根据需求自定义请求参数
body: JSON.stringify({
type:"card",
cart: [
{
id: "YOUR_PRODUCT_ID",
quantity: "YOUR_PRODUCT_QUANTITY",
},
],
}),
});
//返回数据
const orderDataTemp = await response.json();
const orderData = orderDataTemp.data
console.log("订单id==="+orderData.id)
if (orderData.id) {
return orderData.id;
} else {
const errorDetail = orderData?.details?.[0];
const errorMessage = errorDetail
? `${errorDetail.issue} ${errorDetail.description} (${orderData.debug_id})`
: JSON.stringify(orderData);
throw new Error(errorMessage);
}
} catch (error) {
console.error(error);
resultMessage(`Could not initiate PayPal Checkout...<br><br>${error}`);
}
},
//捕获订单--确认付款后调用
async onApprove(data, actions) {
console.log(data.orderID)
try {
//后台捕获订单接口
const response = await fetch(`http://localhost:8866/captureOrderTwo/${data.orderID}`, {
method: "POST",
headers: {
"Content-Type": "application/json",
},
});
//返回参数
const orderDataTemp = await response.json();
const orderData = orderDataTemp.data
// Three cases to handle:
// (1) Recoverable INSTRUMENT_DECLINED -> call actions.restart()
// (2) Other non-recoverable errors -> Show a failure message
// (3) Successful transaction -> Show confirmation or thank you message
const errorDetail = orderData?.details?.[0];
if (errorDetail?.issue === "INSTRUMENT_DECLINED") {
// (1) Recoverable INSTRUMENT_DECLINED -> call actions.restart()
// recoverable state, per https://developer.paypal.com/docs/checkout/standard/customize/handle-funding-failures/
return actions.restart();
} else if (errorDetail) {
// (2) Other non-recoverable errors -> Show a failure message
throw new Error(`${errorDetail.description} (${orderData.debug_id})`);
} else if (!orderData.purchase_units) {
throw new Error(JSON.stringify(orderData));
} else {
// (3) Successful transaction -> Show confirmation or thank you message
// Or go to another URL: actions.redirect('thank_you.html');
const transaction =
orderData?.purchase_units?.[0]?.payments?.captures?.[0] ||
orderData?.purchase_units?.[0]?.payments?.authorizations?.[0];
resultMessage(
`Transaction ${transaction.status}: ${transaction.id}<br><br>See console for all available details`,
);
console.log(
"Capture result",
orderData,
JSON.stringify(orderData, null, 2),
);
}
} catch (error) {
console.error(error);
resultMessage(
`Sorry, your transaction could not be processed...<br><br>${error}`,
);
}
},
})
.render("#paypal-button-container");
// Example function to show a result to the user. Your site's UI library can be used instead.
function resultMessage(message) {
const container = document.querySelector("#result-message");
container.innerHTML = message;
}
4.后台接口
@ApiOperation(value = "创建订单", notes = "")
@PostMapping("/createOrder")
public ResponseResult createOrder(
@RequestBody Map<String,Object> params,
HttpServletRequest request) {
//参数根据自己需求来
return commonService.createOrder(request,params);
}
@ApiOperation(value = "确认订单", notes = "")
@PostMapping("/captureOrderTwo/{orderId}")
public ResponseResult captureOrderTwo(
@PathVariable String orderId,
HttpServletRequest request) {
System.out.println(orderId);
Map<String,Object> params = new HashMap<>();
params.put("orderId",orderId);
//参数根据自己需求来
return commonService.captureOrder(request,params);
}
5. 实现
- 获取token
public String getToken() throws Exception{
String key = redisUtil.getKey("paypalToken");
if (!StringUtils.isEmpty(key)){
return key;
}
//沙箱
String clientId = "xxx";
String clientSecret = "xxx";
String credentials = clientId + ":" + clientSecret;
String encodedCredentials = Base64.getEncoder().encodeToString(credentials.getBytes(StandardCharsets.UTF_8));
OkHttpClient client = new OkHttpClient().newBuilder()
.build();
MediaType mediaType = MediaType.parse("application/x-www-form-urlencoded");
RequestBody body = RequestBody.create(mediaType, "grant_type=client_credentials");
Request request = new Request.Builder()
.url("https://api-m.sandbox.paypal.com/v1/oauth2/token")
.method("POST", body)
.addHeader("Content-Type", "application/x-www-form-urlencoded")
.addHeader("Authorization", "Basic " + encodedCredentials)
.build();
Response response = client.newCall(request).execute();
JSONObject jsonObject = JSON.parseObject(response.body().string(), JSONObject.class);
String string = jsonObject.getString("access_token");
redisUtil.setex("paypalToken",string,jsonObject.getLong("expires_in"));
return string;
}
token返回参数示例：
{
"scope": "https://uri.paypal.com/services/invoicing https://uri.paypal.com/services/disputes/read-buyer https://uri.paypal.com/services/payments/realtimepayment https://uri.paypal.com/services/disputes/update-seller https://uri.paypal.com/services/payments/payment/authcapture openid https://uri.paypal.com/services/disputes/read-seller https://uri.paypal.com/services/payments/refund https://api-m.paypal.com/v1/vault/credit-card https://api-m.paypal.com/v1/payments/.* https://uri.paypal.com/payments/payouts https://api-m.paypal.com/v1/vault/credit-card/.* https://uri.paypal.com/services/subscriptions https://uri.paypal.com/services/applications/webhooks",
"access_token": "A21AAFEpH4PsADK7qSS7pSRsgzfENtu-Q1ysgEDVDESseMHBYXVJYE8ovjj68elIDy8nF26AwPhfXTIeWAZHSLIsQkSYz9ifg",
"token_type": "Bearer",
"app_id": "APP-80W284485P519543T",
"expires_in": 31668,
"nonce": "2020-04-03T15:35:36ZaYZlGvEkV4yVSz8g6bAKFoGSEzuy3CQcz3ljhibkOHg"
}
创建订单
writer里面的参数请根据实际需求填写
public ResponseResult createOrder(HttpServletRequest request, Map<String, Object> params) { try { String type = (String)params.get("type"); type = StringUtils.isEmpty(type)?"paypal":type; System.out.println("请求方式是=="+type); String token =getToken(); System.out.println(token); String string = UUID.randomUUID().toString(); System.out.println(string); URL url = new URL("https://api-m.sandbox.paypal.com/v2/checkout/orders"); HttpURLConnection httpConn = (HttpURLConnection) url.openConnection(); httpConn.setRequestMethod("POST"); httpConn.setRequestProperty("Content-Type", "application/json"); httpConn.setRequestProperty("PayPal-Request-Id", string); httpConn.setRequestProperty("Authorization", "Bearer "+token); httpConn.setDoOutput(true); OutputStreamWriter writer = new OutputStreamWriter(httpConn.getOutputStream()); writer.write("{ \"intent\": \"CAPTURE\", \"purchase_units\": [ { \"reference_id\": \"d9f80740-38f0-11e8-b467-0ed5f89f718b\", \"amount\": { \"currency_code\": \"USD\", \"value\": \"1.00\" } } ], \"payment_source\": { \""+type+"\": { \"experience_context\": { \"payment_method_preference\": \"IMMEDIATE_PAYMENT_REQUIRED\", \"brand_name\": \"EXAMPLE INC\", \"locale\": \"en-US\", \"landing_page\": \"LOGIN\", \"user_action\": \"PAY_NOW\", \"return_url\": \"https://example.com/returnUrl\", \"cancel_url\": \"https://example.com/cancelUrl\" } } } }"); writer.flush(); writer.close(); httpConn.getOutputStream().close(); InputStream responseStream = httpConn.getResponseCode() / 100 == 2 ? httpConn.getInputStream() : httpConn.getErrorStream(); Scanner s = new Scanner(responseStream).useDelimiter("\\A"); String response = s.hasNext() ? s.next() : ""; JSONObject jsonObject = JSON.parseObject(response, JSONObject.class); System.out.println(jsonObject.toJSONString()); return ResponseResult.success(jsonObject); }catch (Exception e){ e.printStackTrace(); } return ResponseResult.error(ResponseType.ERROR); }确认订单
PayPal-Request-Id参数可以修改为用户的id
public ResponseResult captureOrder(HttpServletRequest request, Map<String, Object> params) { try { String token = getToken(); URL url = new URL("https://api-m.sandbox.paypal.com/v2/checkout/orders/"+params.get("orderId")+"/capture"); HttpURLConnection httpConn = (HttpURLConnection) url.openConnection(); httpConn.setRequestMethod("POST"); httpConn.setRequestProperty("Content-Type", "application/json"); httpConn.setRequestProperty("PayPal-Request-Id", "7b92603e-77ed-4896-8e78-5dea2050476a"); httpConn.setRequestProperty("Authorization", "Bearer "+token); InputStream responseStream = httpConn.getResponseCode() / 100 == 2 ? httpConn.getInputStream() : httpConn.getErrorStream(); Scanner s = new Scanner(responseStream).useDelimiter("\\A"); String response = s.hasNext() ? s.next() : ""; System.out.println(response); return ResponseResult.success(JSON.parseObject(response, JSONObject.class)); }catch (Exception e){ e.printStackTrace(); } return ResponseResult.error(ResponseType.ERROR); }
3. 测试
前端打开页面，点击paypal支付，会提示登录paypal账号，登录后点击完成购物即可。此时使用准备好的沙箱账号登录即可。支付成功后，后台需要进行相关的订单校验等操作。。。。
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