java后端PayPal支付实现教程

首先引入 PayPal的sdk 这里我引入的是1.0.4版本的

            <!-- 贝宝支付  SDK   -->            <dependency>                <groupId>com.paypal.sdk</groupId>                <artifactId>checkout-sdk</artifactId>                <paypal-sdk.version>1.0.4</paypal-sdk.version>            </dependency>

yml文件引入公司在官网的相关配置

这里我做了yml的文件环境隔离，限免的配置做了示例

  #  贝宝支付的测试服pay:    paypal:    clientId: AeEX1PNMNaP3RuV8JTBMznAhs_gOfFwloG6SG3TiQh1_MBj0    clientSecret: EMDda7g_Q7KmOiH08qJfg-dAb8d2THkYtzRR    #测试的mode    mode: sandbox    #正式的mode    mode: live

/** * @author majun * @email majun6534@dingtalk.com * @date 2021/7/29 * @since 2.0.0 */@Data@AllArgsConstructor@NoArgsConstructor@ApiModelpublic class PayPalVo extends RequestModel {    /**  本站订单号 */    @ApiModelProperty(value = "本站订单号")    private String orderNo;    /**  三方订单号 */    @ApiModelProperty(value = "本站订单号")    private String outOrderNo;    /** 1 书币充值 ; 2 plus会员充值；3 premium会员充值 */    @ApiModelProperty(value = "1 书币充值 ; 2 plus会员充值；3 premium会员充值")    private Integer orderType;}

PayPal支付

    /**     * 贝宝支付     *     * @param payPalVo 请求对象     * @return 返回结果     */    @PostMapping("/payPalNotify")    @ApiOperation(value = "贝宝支付二次验证")    @Deprecated    public ResponseModel<PayOrderDto> payPalNotify(@RequestBody PayPalVo payPalVo){        if (ObjectUtils.isEmpty(payPalVo.getOrderNo()) || ObjectUtils.isEmpty(payPalVo.getOutOrderNo()) || ObjectUtils.isEmpty(payPalVo.getOrderType())){            return ResponseModel.error(appConfigStatusCodeService.getStatusCode(payPalVo.getLanguage(), ResponseCnSate.PARAM_EXCEPTION));        }        // 根据paypal的订单id，捕获订单付款        String outOrderNo = payPalVo.getOutOrderNo();        String orderNo = payPalVo.getOrderNo();        Integer orderType = payPalVo.getOrderType();        // 校验该订单是否处理        if (payOrderService.isDispose(orderNo) == PayConstants.ORDER_IS_DISPOSE) {            return ResponseModel.error(appConfigStatusCodeService.getStatusCode(payPalVo.getLanguage(), ResponseCnSate.ORDER_PROCESSED));        }        //进行二次验证        Boolean pay = payPalUtils.verifyOrderInfo(outOrderNo);        //如果成功则执行后面的逻辑        if (pay){            boolean b = orderService.finishOrder(orderNo, orderType,payPalVo.getLanguage());            if (!b){                return ResponseModel.error(appConfigStatusCodeService.getStatusCode(payPalVo.getLanguage(), ResponseCnSate.ORDER_HANDLER_FAIL));            }            //保存订单号返回订单信息            PayOrderDto payOrderDto =orderService.saveAndGetOrderInfo(payPalVo.getUserId(),outOrderNo,orderNo);            if (ObjectUtils.isNotEmpty(payOrderDto)){                return ResponseModel.success(payOrderDto);            }            return ResponseModel.error(appConfigStatusCodeService.getStatusCode(payPalVo.getLanguage(), ResponseCnSate.RETURN_ORDER_INFO_FAIL));        }        //失败返回提示        return ResponseModel.error(appConfigStatusCodeService.getStatusCode(payPalVo.getLanguage(), ResponseCnSate.AUTH_FAIL_TWO));    }

后面为了让大家都看的明白 我单独抽取了一个工具，简单的做了描述

package com.wyzz.global.untils.paypal;import com.baomidou.mybatisplus.core.toolkit.ObjectUtils;import com.paypal.core.PayPalEnvironment;import com.paypal.core.PayPalHttpClient;import com.paypal.http.HttpResponse;import com.paypal.http.serializer.Json;import com.paypal.orders.*;import com.paypal.payments.CapturesGetRequest;import lombok.extern.slf4j.Slf4j;import java.io.IOException;import java.util.HashMap;import java.util.List;import java.util.Map;import org.json.JSONObject;import org.springframework.beans.factory.annotation.Value;import org.springframework.stereotype.Service;/** * PayPal工具类 * * @author majun * @email majun6534@dingtalk.com * @date 2021/7/29 * @since 2.0.0 */@Service@Slf4jpublic class PayPalUtils {    /**     * paypal配置应用的客户端ID     */    @Value("${pay.paypal.clientId}")    private String clientId;    /**     * paypal配置应用的客户端密钥     */    @Value("${pay.paypal.clientSecret}")    private String clientSecret;    /**     * paypal连接环境：live表示生产，sandbox表示沙盒     */    @Value("${pay.paypal.mode}")    private String mode;    /**     * paypal的http客户端     * @param mode 环境信息     * @param clientId 客户端ID     * @param clientSecret 密钥     * @return     */    public PayPalHttpClient client(String mode, String clientId, String clientSecret) {        log.info("mode={}, clientId={}, clientSecret={}", mode, clientId, clientSecret);        PayPalEnvironment environment = mode.equals("live") ? new PayPalEnvironment.Live(clientId, clientSecret) : new PayPalEnvironment.Sandbox(clientId, clientSecret);        return new PayPalHttpClient(environment);    }    /**     * 构建订单请求体     * @return     */    public OrderRequest buildRequestBody() {        return new OrderRequest();    }    /**     * 校验订单信息：先扣款，后查询订单详情     * @param orderId 前端提供的palpay的订单id     * @return 订单存在并已扣款成功返回true     */    public Boolean verifyOrderInfo(String orderId) {        Boolean f = false;        try {            // 1.用户授权支付成功，进行扣款操作            this.captureOrder(orderId);        } catch (Exception e) {            e.printStackTrace();        } finally {            // 2.扣款操作失败时也要查询订单，确认是否已扣款            try {                OrdersGetRequest request = new OrdersGetRequest(orderId);                HttpResponse<Order> response = client(mode, clientId, clientSecret).execute(request);                System.out.println("Status Code: " + response.statusCode());                System.out.println("Status: " + response.result().status());                System.out.println("Order id: " + response.result().id());                if(response.result().purchaseUnits().get(0).payments() != null) {                    List<Capture> captures = response.result().purchaseUnits().get(0).payments().captures();                    if(captures != null) {                        for (Capture capture : captures) {                            if (capture.id() != null && capture.id().length() > 0) {                                f = true;                            }                        }                    }                }            } catch (Exception e2) {                e2.printStackTrace();            }        }        return f;    }    /**     * 用户授权支付成功，进行扣款操作：     * 用户通过CreateOrder生成 approveUrl 跳转paypal支付成功后，只是授权，并没有将用户的钱打入我们的paypal账户，我们需要通过 CaptureOrder接口，将钱打入我的PayPal账户     * @param orderId 前端提供的palpay的订单id     */    public void captureOrder(String orderId){        OrdersCaptureRequest request = new OrdersCaptureRequest(orderId);        request.requestBody(this.buildRequestBody());        HttpResponse<Order> response = null;        try {            response = client(mode, clientId, clientSecret).execute(request);        } catch (IOException e1) {            try {                log.error("第1次调用paypal扣款失败");                response = client(mode, clientId, clientSecret).execute(request);            } catch (Exception e) {                try {                    log.error("第2次调用paypal扣款失败");                    response = client(mode, clientId, clientSecret).execute(request);                } catch (Exception e2) {                    log.error("第3次调用paypal扣款失败，失败原因 {}", e2.getMessage() );                }            }        }        if (ObjectUtils.isNotEmpty(response)) {            log.info("Status Code = {}, Status = {}, OrderID = {}", response.statusCode(), response.result().status(), response.result().id());            for (LinkDescription link : response.result().links()) {                log.info("Links-{}: {}    \tCall Type: {}", link.rel(), link.href(), link.method());            }            for (PurchaseUnit purchaseUnit : response.result().purchaseUnits()) {                for (Capture capture : purchaseUnit.payments().captures()) {                    log.info("Capture id: {}", capture.id());                    log.info("status: {}", capture.status());                    log.info("invoice_id: {}", capture.invoiceId());                    if("COMPLETED".equals(capture.status())) {                        //进行数据库操作，修改订单状态为已支付成功，尽快发货（配合回调和CapturesGet查询确定成功）                        log.info("支付成功,状态为=COMPLETED");                    }                    if("PENDING".equals(capture.status())) {                        log.info("status_details: {}", capture.captureStatusDetails().reason());                        String reason = "PENDING";                        if(capture.captureStatusDetails() != null && capture.captureStatusDetails().reason() != null) {                            reason = capture.captureStatusDetails().reason();                        }                        //进行数据库操作，修改订单状态为已支付成功，但触发了人工审核，请审核通过后再发货（配合回调和CapturesGet查询确定成功）                        log.info("支付成功,状态为=PENDING : {}", reason);                    }                }            }            Payer buyer = response.result().payer();            log.info("Buyer Email Address: {}", buyer.email());            log.info("Buyer Name: {} {}", buyer.name().givenName(), buyer.name().surname());        }    }    /**     * 查询订单详情     * @param orderId 前端提供的palpay的订单id     * @throws IOException     */    public void ordersGetRequest(String orderId) throws IOException {        OrdersGetRequest request = new OrdersGetRequest(orderId);        HttpResponse<Order> response = null;        try {            response = client(mode, clientId, clientSecret).execute(request);        } catch (Exception e) {            try {                System.out.println("调用paypal订单查询失败，链接异常1");                response = client(mode, clientId, clientSecret).execute(request);            } catch (Exception e2) {                try {                    System.out.println("调用paypal订单查询失败，链接异常2");                    response = client(mode, clientId, clientSecret).execute(request);                } catch (Exception e3) {                    System.out.println("调用paypal订单查询失败，链接异常3");                    System.out.println(e3.getMessage());                }            }        }        System.out.println("Status Code: " + response.statusCode());        System.out.println("Status: " + response.result().status());        System.out.println("Order id: " + response.result().id());        if(response.result().purchaseUnits().get(0).payments() != null) {            List<Capture> captures = response.result().purchaseUnits().get(0).payments().captures();            if(captures != null) {                for (Capture capture : captures) {                    System.out.println("\t订单编号= " + capture.invoiceId() + "\tCapture Id= " + capture.id() + "\tCapture status= " + capture.status() + "\tCapture amount= " + capture.amount().currencyCode() + ":" + capture.amount().value());                }            }            List<Refund> refunds = response.result().purchaseUnits().get(0).payments().refunds();            if(refunds != null) {                for (Refund refund : refunds) {                    System.out.println("\t售后编号= " + refund.invoiceId() + "\tRefund Id= " + refund.id() + "\tRefund status= " + refund.status() + "\tRefund amount= " + refund.amount().currencyCode() + ":" + refund.amount().value());                }            }        }        System.out.println("Links: ");        for (LinkDescription link : response.result().links()) {            System.out.println("\t" + link.rel() + ": " + link.href() + "\tCall Type: " + link.method());        }    }    /**     * 查询扣款详情     * @param orderId 前端提供的palpay的订单id     * @throws IOException     */    public void capturesGetRequest(String orderId) throws IOException {        CapturesGetRequest request = new CapturesGetRequest(orderId);        HttpResponse<com.paypal.payments.Capture> response = client(mode, clientId, clientSecret).execute(request);        System.out.println("Status Code: " + response.statusCode());        System.out.println("Status: " + response.result().status());        System.out.println("Capture ids: " + response.result().id());        System.out.println("Links: ");        for (com.paypal.payments.LinkDescription link : response.result().links()) {            System.out.println("\t" + link.rel() + ": " + link.href() + "\tCall Type: " + link.method());        }    }    public Map<String,Object> createOrder(OrderRequest orderRequest) {        OrdersCreateRequest request = new OrdersCreateRequest();        request.header("prefer","return=representation");        request.requestBody(orderRequest);//        PayPalClient payPalClient = new PayPalClient();        HttpResponse<Order> response = null;        try {            response = client(mode, clientId, clientSecret).execute(request);        } catch (IOException e1) {            try {                log.error("第1次调用paypal订单创建失败");                response = client(mode, clientId, clientSecret).execute(request);            } catch (Exception e) {                try {                    log.error("第2次调用paypal订单创建失败");                    response = client(mode, clientId, clientSecret).execute(request);                } catch (Exception e2) {                    log.error("第3次调用paypal订单创建失败，失败原因：{}", e2.getMessage());                }            }        }//        String approve = "";        Map<String,Object> map = new HashMap();        if (response.statusCode() == 201) {            log.info("Status Code = {}, Status = {}, OrderID = {}, Intent = {}", response.statusCode(), response.result().status(), response.result().id(), response.result().checkoutPaymentIntent());            map.put("Id",response.result().id());            for (LinkDescription link : response.result().links()) {                log.info("Links-{}: {}    \tCall Type: {}", link.rel(), link.href(), link.method());                if(link.rel().equals("approve")) {//                    approve = link.href();                    map.put("outOrderNo",link.href());                }            }            String totalAmount = response.result().purchaseUnits().get(0).amountWithBreakdown().currencyCode() + ":" + response.result().purchaseUnits().get(0).amountWithBreakdown().value();            log.info("Total Amount: {}", totalAmount);//            String json= new JSONObject(new Json().serialize(response.result())).toString(4);//            log.info("createOrder response body: {}", json);        }        return map;    }//    public static void main(String[] args) throws Exception {//        PayPalUtils payPalUtils = new PayPalUtils();//        payPalUtils.verifyOrderInfo("45S82276S8854414K");//        payPalUtils.ordersGetRequest("45S82276S8854414K");//        payPalUtils.captureOrder("18K07174PX6483500");//        payPalUtils.capturesGetRequest("31V65486WC667442G");//        // issue ： ORDER_ALREADY_CAPTURED 订单已被捕获//        // intent=CAPTURE 每个订单只允许捕获一次//    }}

不敢说描述的有多么到位 只希望给java将要对接paypal的同学一点儿参考

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