springboot集成支付宝的支付(通用版)

@RestController

@RequestMapping("alipay")

public class AliPayControllerEdition {

    @Resource

    private AliPayConfig aliPayConfig;

//支付的接口

    @GetMapping("/pay") // &subject=xxx&traceNo=xxx&totalAmount=xxx

    public void pay(AliPay aliPay, HttpServletResponse httpResponse) throws IOException {

        // 1. 创建Client，通用SDK提供的Client，负责调用支付宝的API

        AlipayClient alipayClient = new DefaultAlipayClient(AliPayParam.GATEWAY_URL, aliPayConfig.getAppId(),

                aliPayConfig.getAppPrivateKey(), AliPayParam.FORMAT, AliPayParam.CHARSET, aliPayConfig.getAlipayPublicKey(), AliPayParam.SIGN_TYPE);

        // 2. 创建 Request并设置Request参数

        AlipayTradePagePayRequest request = new AlipayTradePagePayRequest();  // 发送请求的 Request类

        request.setNotifyUrl(aliPayConfig.getNotifyUrl());

        Map<String, Object> map = new HashMap<>();

        map.put("out_trade_no", aliPay.getTraceNo());  // 我们自己生成的订单编号

        map.put("total_amount", aliPay.getTotalAmount()); // 订单的总金额

        map.put("subject", aliPay.getSubject());   // 支付的名称

        map.put("product_code", "FAST_INSTANT_TRADE_PAY");  // 固定配置

        String s = new ObjectMapper().writeValueAsString(map);

        request.setBizContent(s);

        // 执行请求，拿到响应的结果，返回给浏览器

        String form = "";

        try {

            form = alipayClient.pageExecute(request).getBody(); // 调用SDK生成表单

        } catch (AlipayApiException e) {

            e.printStackTrace();

        }

        httpResponse.setContentType("text/html;charset=" + AliPayParam.CHARSET);

        httpResponse.getWriter().write(form);// 直接将完整的表单html输出到页面

        httpResponse.getWriter().flush();

        httpResponse.getWriter().close();

    }

//回调接口

    @PostMapping("/notify")  // 注意这里必须是POST接口

    public String payNotify(HttpServletRequest request) throws Exception {

        if (request.getParameter("trade_status").equals("TRADE_SUCCESS")) {

            System.out.println("=========支付宝异步回调========");

            Map<String, String> params = new HashMap<>();

            Map<String, String[]> requestParams = request.getParameterMap();

            for (String name : requestParams.keySet()) {

                params.put(name, request.getParameter(name));

                // System.out.println(name + " = " + request.getParameter(name));

            }

            String tradeNo = params.get("out_trade_no");

            String gmtPayment = params.get("gmt_payment");

            String alipayTradeNo = params.get("trade_no");

            String sign = params.get("sign");

            String content = AlipaySignature.getSignCheckContentV1(params);

            boolean checkSignature = AlipaySignature.rsa256CheckContent(content, sign, aliPayConfig.getAlipayPublicKey(), "UTF-8"); // 验证签名

            // 支付宝验签

            if (checkSignature) {

                // 验签通过

                System.out.println("交易名称: " + params.get("subject"));

                System.out.println("交易状态: " + params.get("trade_status"));

                System.out.println("支付宝交易凭证号: " + params.get("trade_no"));

                System.out.println("商户订单号: " + params.get("out_trade_no"));

                System.out.println("交易金额: " + params.get("total_amount"));

                System.out.println("买家在支付宝唯一id: " + params.get("buyer_id"));

                System.out.println("买家付款时间: " + params.get("gmt_payment"));

                System.out.println("买家付款金额: " + params.get("buyer_pay_amount"));

                // 更新订单未已支付

                //ordersMapper.updateState(tradeNo, "已支付", gmtPayment, alipayTradeNo);

            }

        }

        return "success";

    }

    @GetMapping("/return")

    public String returnPay(AliPay aliPay) throws AlipayApiException, JsonProcessingException {

//        7天无理由退款

//        Orders orders = ordersMapper.getByNo(aliPay.getTraceNo());

//        if (orders != null) {

//            // hutool工具类，判断时间间隔

//            long between = DateUtil.between(DateUtil.parseDateTime(orders.getPaymentTime()), DateUtil.parseDateTime(now), DateUnit.DAY);

//            if (between > 7) {

//                return Result.error("-1", "该订单已超过7天，不支持退款");

//            }

//        }

        // 1. 创建Client，通用SDK提供的Client，负责调用支付宝的API

        AlipayClient alipayClient = new DefaultAlipayClient(AliPayParam.GATEWAY_URL,

                aliPayConfig.getAppId(), aliPayConfig.getAppPrivateKey(), AliPayParam.FORMAT, AliPayParam.CHARSET,

                aliPayConfig.getAlipayPublicKey(), AliPayParam.SIGN_TYPE);

        // 2. 创建 Request，设置参数

        AlipayTradeRefundRequest request = new AlipayTradeRefundRequest();

        Map<String, Object> map = new HashMap<>();

        map.put("trade_no", aliPay.getAlipayTraceNo());

        map.put("refund_amount", aliPay.getTotalAmount());

        map.put("out_request_no", aliPay.getTraceNo());

        // 返回参数选项，按需传入

        //JSONArray queryOptions = new JSONArray();

        //queryOptions.add("refund_detail_item_list");

        //bizContent.put("query_options", queryOptions);

        String s = new ObjectMapper().writeValueAsString(map);

        request.setBizContent(s);

        // 3. 执行请求

        AlipayTradeRefundResponse response = alipayClient.execute(request);

        if (response.isSuccess()) {  // 退款成功，isSuccess 为true

            System.out.println("调用成功");

            // 4. 更新数据库状态

            //ordersMapper.updatePayState(aliPay.getTraceNo(), "已退款", now);

            return "成功";

        } else {   // 退款失败，isSuccess 为false

            System.out.println(response.getBody());

            return "失败";

        }

    }

}