支付宝接入技术

准备工作：去支付宝开放平台准备好以下东西

 // 沙箱应用私钥（private key）
    private String shaxiang_app_private_Key = "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";

    // 沙箱应用公钥（public key）
    private String shaxiang_app_public_Key = "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA19MzKqCx453Qz6IVEarf8W0GrGHBYCWksm//Laknrxh0w3kjnWUQ65OCQUCACdNaqEzFSbYr8ll54BTKwBs/nk3oFngisyCClHmueXm80epbWC9TggMQTsaML1SlJHM5YxbfcDUNw97rBuR3SiJawwslCI3wH/y4TQJ4nDpbtF64SUk+qYTmSOM85bcvDUrAQvf8fHkjHry5DgiRXO/HkhiSwi1+wRk+pwl75DkqHv+9I2oWub9OUyWtJ0UXPf497/wx4tOuvdAlE68Ej2QIDAQAB";

    // 沙箱支付宝公钥
    private String shaxiang_alipay_public_key = "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAmNGvU4bQrIGPHWNQBXZgxWDiPcrbA66Lm3jhBvKR9tdICrDVYO1Me04cQkwmiQBLfohGTzQ3b9Vb220vhDSPvyXpWz+e/jowwWXXpx0TYmJkjzgLYNpXME8x6wtIj42pMMBhOa3TtmU9bCtaWeRtkUCmJtMbMhtbVWyAGEEAe52rUx0lb73opQyJWkf1K03mRAPAsThnR9vsR3yMs8xOgSsdv/yxOsa3XywuGQ3tydqsDDXA3KgBE7/8AknzeFHRTkJChe9kLyqHpiY2LdYCC9H9YYQ8wnmBwHTRuuoqk7porX7KtIB8M6byVoKc/jGVklTKyYLISnXl4slo052lDQIDAQAB";

    // 沙箱APPID
    private String shaxiang_app_id = "2021000118636593";

    // 沙箱应用名称
    private String shaxiang_app_name = "sandbox应用:2088621956695242";

    // 沙箱绑定的商家账号（PID）
    private String shaxiang_app_pid = "2088621956695242";

    // 沙箱URL
    private String shaxiang_url = "https://openapi.alipaydev.com/gateway.do";

    // 沙箱回调URL{同步}
    private String shaxiang_return_url = "http://localhost:10086/api/Alipay/alipayCallBackURl";

    // 沙箱字符集
    private String shaxiang_char_set = "UTF-8";

    // 沙箱验签方式
    private String shaxiang_sign_type = "RSA2";

注册AlipayClient到Spring容器

 /**
     * Description:  沙箱测试支付宝接口
     *
     * @author: GuoTong
     * @date: 2022-12-22 21:21:04
     * @return:com.alipay.api.AlipayClient
     */
    @Bean
    public AlipayClient getAlipayClientShaXiang() {

        AlipayConfig alipayConfig = new AlipayConfig();
        // 支付宝网关（固定）https://openapi.alipay.com/gateway.do
        alipayConfig.setServerUrl(shaxiang_url);
        // APPID 即创建应用后生成
        alipayConfig.setAppId(shaxiang_app_id);
        // 开发者私钥，由开发者自己生成。
        alipayConfig.setPrivateKey(shaxiang_app_private_Key);
        // 参数返回格式，只支持 JSON（固定）。
        alipayConfig.setFormat("json");
        // 编码集，支持 GBK/UTF-8
        alipayConfig.setCharset(shaxiang_char_set);
        // 支付宝公钥，由支付宝生成。
        alipayConfig.setAlipayPublicKey(shaxiang_alipay_public_key);
        // 生成签名字符串所使用的签名算法类型，目前支持 RSA2。
        alipayConfig.setSignType(shaxiang_sign_type);
        //构造client
        try {
            return new DefaultAlipayClient(alipayConfig);
        } catch (AlipayApiException e) {
            e.printStackTrace();
        }
        return null;
    }

支付生成页面

 @RequestMapping(value = "/getAlipayPage", method = RequestMethod.GET)
    @ApiOperation("获取支付页面")
    public void getPayPage(HttpServletResponse resp, HttpServletRequest req) {
        AlipayTradePagePayRequest request = new AlipayTradePagePayRequest();
        // 支付宝异步通知路径,付款完毕后会异步调用本项目的方法,必须为公网地址
        request.setNotifyUrl("");
        // 支付宝同步通知路径,也就是当付款完毕后跳转本项目的页面,可以不是公网地址
        request.setReturnUrl(alipayByAPPConfig.getShaxiang_return_url());
        JSONObject bizContent = new JSONObject();
        String out_trade_no = req.getParameter("out_trade_no");
        // 东八区时间搓，精确到秒级别
        long currentTime = LocalDateTime.now().toEpochSecond(ZoneOffset.of("+8"));
        // 设置商家订单号
        bizContent.put("out_trade_no", StringUtils.defaultIfEmpty(out_trade_no, String.valueOf(currentTime)));
        bizContent.put("total_amount", 200);
        bizContent.put("subject", "测试商品");
        bizContent.put("product_code", "FAST_INSTANT_TRADE_PAY");
        request.setBizContent(bizContent.toString());
        AlipayTradePagePayResponse response = null;
        try {
            response = alipayClient.pageExecute(request);
            resp.setHeader("Content-Type", "text/html;charset=utf-8");
            PrintWriter out = resp.getWriter();
            String body = response.getBody();
            out.print(body);
        } catch (AlipayApiException | IOException e) {
            e.printStackTrace();
        }
        assert response != null;
        if (response.isSuccess()) {
            log.info("调用成功");
        } else {
            log.error("调用失败==>{}", response);
        }
    }

支付成功回调地址

 @RequestMapping(value = "/alipayCallBackURl", method = RequestMethod.GET)
    @ApiOperation("支付完成回调地址")
    public ModelAndView alipayCallBackURl(HttpServletRequest req) throws UnsupportedEncodingException, AlipayApiException {
        Map<String, String[]> requestParams = req.getParameterMap();
        // 获取支付宝GET过来反馈信息
        Map<String, String> params = new HashMap<>();
        for (Iterator<String> iter = requestParams.keySet().iterator(); iter.hasNext(); ) {
            String name = iter.next();
            String[] values = requestParams.get(name);
            String valueStr = "";
            for (int i = 0; i < values.length; i++) {
                valueStr = (i == values.length - 1) ? valueStr + values[i] : valueStr + values[i] + ",";
            }
            // 乱码解决，这段代码在出现乱码时使用
            valueStr = new String(valueStr.getBytes(StandardCharsets.ISO_8859_1), StandardCharsets.UTF_8);
            params.put(name, valueStr);
        }
        log.info("支付宝回调参数。。。。。。{}", params);
        //验证签名（支付宝公钥）
        boolean signVerified = AlipaySignature.rsaCheckV1(params,
                alipayByAPPConfig.getShaxiang_alipay_public_key(),
                alipayByAPPConfig.getShaxiang_char_set(),
                alipayByAPPConfig.getShaxiang_sign_type()); // 调用SDK验证签名
        ModelAndView modelAndView = new ModelAndView("/Alipay");
        //验证签名通过
        if (signVerified) {
            // 商户订单号
            String out_trade_no = new String(req.getParameter("out_trade_no").getBytes(StandardCharsets.ISO_8859_1), StandardCharsets.UTF_8);
            // 支付宝交易流水号
            String trade_no = new String(req.getParameter("trade_no").getBytes(StandardCharsets.ISO_8859_1), StandardCharsets.UTF_8);
            // 付款金额
            float money = Float.parseFloat(new String(req.getParameter("total_amount").getBytes(StandardCharsets.ISO_8859_1), StandardCharsets.UTF_8));
            modelAndView.addObject("tradeNo", trade_no);
            modelAndView.addObject("tradeStatus", "回调成功");
            modelAndView.addObject("totalAmount", money);
            modelAndView.addObject("outTradeNo", out_trade_no);
            return modelAndView;
        } else {
            modelAndView.addObject("tradeNo", "验证签名未通过");
            modelAndView.addObject("tradeStatus", "验证签名未通过");
            modelAndView.addObject("totalAmount", "验证签名未通过");
            modelAndView.addObject("outTradeNo", "验证签名未通过");
        }
        return modelAndView;
    }

根据商户订单号查询支付结果

    /**
     * Description: 商家订单号查看订单
     *
     * @param out_trade_no
     * @author: GuoTong
     * @date: 2022-12-22 20:43:42
     * @return:org.springframework.web.servlet.ModelAndView
     */
    @RequestMapping(value = "/queryInfobyOutTradeNo", method = RequestMethod.GET)
    @ApiOperation("商家订单号查看订单")
    public ModelAndView queryAlipayInfo(@RequestParam("out_trade_no") String out_trade_no) {

        AlipayTradeQueryRequest request = new AlipayTradeQueryRequest();
        JSONObject bizContent = new JSONObject();
        bizContent.put("out_trade_no", out_trade_no);
        request.setBizContent(bizContent.toString());
        AlipayTradeQueryResponse response = null;
        ModelAndView modelAndView = new ModelAndView("/Alipay");
        try {
            response = alipayClient.execute(request);
            // 支付宝交易号
            String tradeNo = response.getTradeNo();
            // 交易状态：WAIT_BUYER_PAY（交易创建，等待买家付款）、TRADE_CLOSED（未付款交易超时关闭，或支付完成后全额退款）、TRADE_SUCCESS（交易支付成功）、TRADE_FINISHED（交易结束，不可退款）
            String tradeStatus = response.getTradeStatus();
            //交易的订单金额
            String totalAmount = response.getTotalAmount();
            // 商家订单号
            String outTradeNo = response.getOutTradeNo();
            modelAndView.addObject("tradeNo", tradeNo);
            modelAndView.addObject("tradeStatus", tradeStatus);
            modelAndView.addObject("totalAmount", totalAmount);
            modelAndView.addObject("outTradeNo", outTradeNo);
        } catch (AlipayApiException e) {
            e.printStackTrace();
        }
        assert response != null;
        if (response.isSuccess()) {
            System.out.println("调用成功");
        } else {
            System.out.println("调用失败");
        }
        return modelAndView;
    }

本地展示界面

<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <script th:src="@{/bootstrap-3.4.1-dist/js/bootstrap.js}"></script>
    <link rel="stylesheet" th:href="@{/bootstrap-3.4.1-dist/css/bootstrap.css}" crossorigin="anonymous">
    <meta charset="UTF-8">
    <title>支付宝</title>
</head>
<body>
<div>
    <table class="table table-hover">
        <tr>
            <td class="active">支付宝交易号</td>
            <td class="success">交易状态</td>
            <td class="warning">交易的订单金额</td>
            <td class="danger">商家订单号</td>
        </tr>
        <tr>
            <td class="active" th:text="${tradeNo}">支付宝交易号</td>
            <td class="success" th:text="${tradeStatus}">交易状态</td>
            <td class="warning" th:text="${totalAmount}">交易的订单金额</td>
            <td class="danger" th:text="${outTradeNo}">商家订单号</td>
        </tr>
    </table>
    <div class="progress-bar progress-bar-success progress-bar-striped" role="progressbar" aria-valuenow="100"
         aria-valuemin="0" aria-valuemax="100" style="width: 100%">
        <span class="sr-only">100% Complete (success)</span>
    </div>
    <h1 align="center">支付反馈结果</h1>
</div>
</body>
</html>

其他操作请参考官方文档操作。。。