使用SpringBoot简单实现一个苹果支付的场景_Java

在spring boot项目中集成apple pay，需要实现以下步骤：

配置apple开发者账户：在apple开发者中心创建商家id，并生成相关的支付处理证书。
配置https：apple pay要求服务器必须使用https协议。您可以使用jdk自带的keytool工具生成自签名证书，或从受信任的证书颁发机构获取证书。
集成支付sdk：在spring boot项目中，您可以使用第三方支付集成库，如pay-spring-boot-starter，来简化支付流程的实现。

以下是一个基于spring boot的场景示例，展示如何集成apple pay并处理支付回调：

1. 配置apple pay相关参数

在application.yml中添加apple pay的相关配置：

applepay:
  merchantid: your_merchant_id
  merchantcertificatepath: path_to_your_merchant_certificate.p12
  merchantcertificatepassword: your_certificate_password
  merchantidentifier: your_merchant_identifier

2. 创建支付服务类

创建一个服务类applepayservice，用于处理支付请求和验证支付结果：

@service
public class applepayservice {

    @value("${applepay.merchantid}")
    private string merchantid;

    @value("${applepay.merchantcertificatepath}")
    private string merchantcertificatepath;

    @value("${applepay.merchantcertificatepassword}")
    private string merchantcertificatepassword;

    @value("${applepay.merchantidentifier}")
    private string merchantidentifier;

    public string createpaymentsession(string validationurl) {
        // 加载商户证书
        keystore keystore = keystore.getinstance("pkcs12");
        try (inputstream keyinput = new fileinputstream(merchantcertificatepath)) {
            keystore.load(keyinput, merchantcertificatepassword.tochararray());
        }

        // 创建ssl上下文
        keymanagerfactory kmf = keymanagerfactory.getinstance(keymanagerfactory.getdefaultalgorithm());
        kmf.init(keystore, merchantcertificatepassword.tochararray());
        sslcontext sslcontext = sslcontext.getinstance("tls");
        sslcontext.init(kmf.getkeymanagers(), null, null);

        // 设置https连接
        url url = new url(validationurl);
        httpsurlconnection connection = (httpsurlconnection) url.openconnection();
        connection.setsslsocketfactory(sslcontext.getsocketfactory());
        connection.setrequestmethod("post");
        connection.setrequestproperty("content-type", "application/json");

        // 构建请求数据
        jsonobject requestdata = new jsonobject();
        requestdata.put("merchantidentifier", merchantidentifier);
        requestdata.put("displayname", "your store name");
        requestdata.put("initiative", "web");
        requestdata.put("initiativecontext", "yourdomain.com");

        // 发送请求
        connection.setdooutput(true);
        try (outputstream os = connection.getoutputstream()) {
            os.write(requestdata.tostring().getbytes(standardcharsets.utf_8));
        }

        // 读取响应
        try (inputstream is = connection.getinputstream();
             bufferedreader reader = new bufferedreader(new inputstreamreader(is))) {
            stringbuilder response = new stringbuilder();
            string line;
            while ((line = reader.readline()) != null) {
                response.append(line);
            }
            return response.tostring();
        }
    }

    public boolean validatepayment(string paymentdata) {
    // apple验证服务器的url
    string url = "https://sandbox.itunes.apple.com/verifyreceipt"; // 沙盒环境
    // string url = "https://buy.itunes.apple.com/verifyreceipt"; // 生产环境

    try {
        // 构建验证请求的json数据
        jsonobject requestjson = new jsonobject();
        requestjson.put("receipt-data", paymentdata);
        // 如果是自动续订订阅，需要添加以下字段
        // requestjson.put("password", "your_shared_secret");

        // 创建http连接
        url verifyurl = new url(url);
        httpurlconnection conn = (httpurlconnection) verifyurl.openconnection();
        conn.setrequestmethod("post");
        conn.setrequestproperty("content-type", "application/json");
        conn.setdooutput(true);

        // 发送请求数据
        try (outputstream os = conn.getoutputstream()) {
            os.write(requestjson.tostring().getbytes(standardcharsets.utf_8));
        }

        // 读取响应数据
        int responsecode = conn.getresponsecode();
        if (responsecode == 200) {
            try (inputstream is = conn.getinputstream();
                 bufferedreader reader = new bufferedreader(new inputstreamreader(is))) {
                stringbuilder response = new stringbuilder();
                string line;
                while ((line = reader.readline()) != null) {
                    response.append(line);
                }

                // 解析响应json
                jsonobject responsejson = new jsonobject(response.tostring());
                int status = responsejson.getint("status");

                // 根据status字段判断支付结果
                if (status == 0) {
                    // 验证成功，支付有效
                    return true;
                } else if (status == 21007) {
                    // 收据是沙盒环境，但发送到了生产环境的验证服务器
                    // 需要重新发送到沙盒环境进行验证
                    // 这里可以递归调用validatepayment方法，使用沙盒环境的url
                    // 注意避免递归陷阱，确保不会无限递归
                    return validatepaymentinsandbox(paymentdata);
                } else {
                    // 验证失败，支付无效
                    return false;
                }
            }
        } else {
            // http响应码非200，表示请求失败
            return false;
        }
      } catch (exception e) {
        e.printstacktrace();
        return false;
     }
   }
}

3. 创建支付控制器

创建一个控制器applepaycontroller，用于处理前端的支付请求和回调：

@restcontroller
@requestmapping("/applepay")
public class applepaycontroller {

    @autowired
    private applepayservice applepayservice;

    @postmapping("/payment-session")
    public responseentity<string> createpaymentsession(@requestbody map<string, string> request) {
        string validationurl = request.get("validationurl");
        string paymentsession = applepayservice.createpaymentsession(validationurl);
        return responseentity.ok(paymentsession);
    }

    @postmapping("/payment-result")
    public responseentity<string> handlepaymentresult(@requestbody map<string, object> paymentresult) {
        string paymentdata = (string) paymentresult.get("paymentdata");
        boolean isvalid = applepayservice.validatepayment(paymentdata);
        if (isvalid) {
            // 处理支付成功的逻辑
            return responseentity.ok("payment successful");
        } else {
            // 处理支付失败的逻辑
            return responseentity.status(httpstatus.bad_request).body("payment validation failed");
        }
    }
}

4. 前端集成apple pay

在前端页面中，使用apple提供的javascript库来处理apple pay的支付流程：

<script type="text/javascript">
document.addeventlistener('domcontentloaded', function() {
    if (window.applepaysession && applepaysession.canmakepayments()) {
        var applepaybutton = document.getelementbyid('apple-pay-button');
        applepaybutton.style.display = 'block';
        applepaybutton.addeventlistener('click', function() {
            var paymentrequest = {
                countrycode: 'us',
                currencycode: 'usd',
                total: {
                    label: 'your store name',
                    amount: '10.00'
                },
                supportednetworks: ['visa', 'mastercard', 'amex'],
                merchantcapabilities: ['supports3ds']
            };

            var session = new applepaysession(3, paymentrequest);

            session.onvalidatemerchant = function(event) {
                fetch('/applepay/payment-session', {
                    method: 'post',
                    headers: {
                        'content-type': 'application/json'
                    },
                    body: json.stringify({ validationurl: event.validationurl })
                })
                .then(function(response) {
                    return response.json();
                })
                .then(function(merchantsession) {
                    session.completemerchantvalidation(merchantsession);
                });
            };

            session.onpaymentauthorized = function(event) {
                var paymentdata = event.payment.token.paymentdata;
                fetch('/applepay/payment-result', {
                    method: 'post',
                    headers: {
                        'content-type': 'application/json'
                    },
                    body: json.stringify({ paymentdata: paymentdata })
                })
                .then(function(response) {
                    if (response.ok) {
                        session.completepayment(applepaysession.status_success);
                    } else {
                        session.completepayment(applepaysession.status_failure);
                    }
                });
            };

            session.begin();

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