Springboot添加支付接口

public class AlipayConfig {

//↓↓↓↓↓↓↓↓↓↓请在这里配置您的基本信息↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓

    // 应用ID,您的APPID，收款账号既是您的APPID对应支付宝账号
    public static String app_id = "";

    // 商户私钥，您的PKCS8格式RSA2私钥
    public static String merchant_private_key = "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";

    // 支付宝公钥,查看地址：https://openhome.alipay.com/platfORM/keyManage.htm 对应APPID下的支付宝公钥。
    public static String alipay_public_key = "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAvxznkDcrpbc5HOXFJ6sQUkyKWLegU4CaAhyoi0A2ID4Y70l9eq9PEMPNqmHUIFhLOIRzctgjhGoZLMNXlvs8mNmpXb4pu3BwJ8hTzawCfuQ0QXYQYPj41exHKWiOS0WjKmjvKg0orPgFFOHu0DhC6jIK+8sQTUnEOipLJ1p87XBcc+jPU+unQGSdHVqYgfKmrTOrE/zHh0wF3mC4SG51GsTPbxiUdwCR2x5rzWvaNE6E9CwIDAQAB";

    // 服务器异步通知页面路径  需Http://格式的完整路径，不能加?id=123这类自定义参数，必须外网可以正常访问
    public static String notify_url = "http://localhost:8080/alipay/alipayNotifyNotice.action";

    // 页面跳转同步通知页面路径 需http://格式的完整路径，不能加?id=123这类自定义参数，必须外网可以正常访问
    public static String return_url = "http://localhost:8080/alipay/alipayReturnNotice.action";

    // 签名方式
    public static String sign_type = "RSA2";

    // 字符编码格式
    public static String charset = "utf-8";

    // 支付宝网关
    public static String gatewayUrl = "https://openapi.alipaydev.com/gateway.do";

    // 支付宝网关
    public static String log_path = "C:\\";


//↑↑↑↑↑↑↑↑↑↑请在这里配置您的基本信息↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑

    
    public static void logResult(String sWord) {
        FileWriter writer = null;
        try {
            writer = new FileWriter(log_path + "alipay_log_" + System.currentTimeMillis()+".txt");
            writer.write(sWord);
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (writer != null) {
                try {
                    writer.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
    }
}

    @RequestMapping(value = "/goAlipay", produces = "text/html; charset=UTF-8")
    @ResponseBody
    public String goAlipay(String orderId, HttpServletRequest request, HttpServletRequest response) throws Exception {

         order = (Order) request.getSession().getAttribute("order");

    orderId="FinchII";

        //获得初始化的AlipayClient
        AlipayClient alipayClient = new DefaultAlipayClient(AlipayConfig.gatewayUrl, AlipayConfig.app_id, AlipayConfig.merchant_private_key, "JSON", AlipayConfig.charset, AlipayConfig.alipay_public_key, AlipayConfig.sign_type);

        //设置请求参数
        AlipayTradePagePayRequest alipayRequest = new AlipayTradePagePayRequest();
        alipayRequest.setReturnUrl(AlipayConfig.return_url);
        alipayRequest.setNotifyUrl(AlipayConfig.notify_url);

        //商户订单号，商户网站订单系统中唯一订单号，必填
        String out_trade_no = orderId;
        //付款金额，必填
        BigDecimal total_amount = order.getTotalPrice();
        //订单名称，必填
        int subject = order.getOrderId();
        //商品描述，可空
        String body = "用户订购商品个数：" + order.getLineItems().size();

        // 该笔订单允许的最晚付款时间，逾期将关闭交易。取值范围：1m～15d。m-分钟，h-小时，d-天，1c-当天（1c-当天的情况下，无论交易何时创建，都在0点关闭）。 该参数数值不接受小数点， 如 1.5h，可转换为 90m。
        String timeout_express = "1c";

        alipayRequest.setBizContent("{\"out_trade_no\":\""+ out_trade_no +"\","
                + "\"total_amount\":\""+ total_amount +"\","
                + "\"subject\":\""+ subject +"\","
                + "\"body\":\""+ body +"\","
                + "\"timeout_express\":\""+ timeout_express +"\","
                + "\"product_code\":\"FAST_INSTANT_TRADE_PAY\"}");

        //请求
        String result = alipayClient.pageExecute(alipayRequest).getBody();

        return result;
    }
    @RequestMapping(value = "/alipayReturnNotice")
    public ModelAndView alipayReturnNotice(HttpServletRequest request, HttpServletRequest response) throws Exception {



        //获取支付宝GET过来反馈信息
        Map<String,String> params = new HashMap<String,String>();
        Map<String,String[]> requestParams = request.getParameterMap();
        for (Iterator<String> iter = requestParams.keySet().iterator(); iter.hasNext();) {
            String name = (String) iter.next();
            String[] values = (String[]) 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("ISO-8859-1"), "utf-8");
            params.put(name, valueStr);
        }

        boolean signVerified = AlipaySignature.rsaCheckV1(params, AlipayConfig.alipay_public_key, AlipayConfig.charset, AlipayConfig.sign_type); //调用SDK验证签名

        ModelAndView mv = new ModelAndView("alipaySuccess");
        //——请在这里编写您的程序（以下代码仅作参考）——
        if(signVerified) {
            //商户订单号

            Order order= (Order) request.getSession().getAttribute("order");
            BigDecimal out_trade_no = order.getTotalPrice();

            //支付宝交易号
            String trade_no = new String(request.getParameter("trade_no").getBytes("ISO-8859-1"),"UTF-8");

            //付款金额
            String total_amount = new String(request.getParameter("total_amount").getBytes("ISO-8859-1"),"UTF-8");

            // 修改叮当状态，改为 支付成功，已付款; 同时新增支付流水



           


            mv.addObject("out_trade_no", out_trade_no);
            mv.addObject("trade_no", trade_no);
            mv.addObject("total_amount", total_amount);
          

        }else {
           
        }

        return mv;
    }
    
    @RequestMapping(value = "/alipayNotifyNotice")
    @ResponseBody
    public String alipayNotifyNotice(HttpServletRequest request, HttpServletRequest response) throws Exception {



        //获取支付宝POST过来反馈信息
        Map<String,String> params = new HashMap<String,String>();
        Map<String,String[]> requestParams = request.getParameterMap();
        for (Iterator<String> iter = requestParams.keySet().iterator(); iter.hasNext();) {
            String name = (String) iter.next();
            String[] values = (String[]) 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("ISO-8859-1"), "utf-8");
            params.put(name, valueStr);
        }

        boolean signVerified = AlipaySignature.rsaCheckV1(params, AlipayConfig.alipay_public_key, AlipayConfig.charset, AlipayConfig.sign_type); //调用SDK验证签名

        //——请在这里编写您的程序（以下代码仅作参考）——

		

        if(signVerified) {//验证成功
            //商户订单号
            String out_trade_no = new String(request.getParameter("out_trade_no").getBytes("ISO-8859-1"),"UTF-8");

            //支付宝交易号
            String trade_no = new String(request.getParameter("trade_no").getBytes("ISO-8859-1"),"UTF-8");

            //交易状态
            String trade_status = new String(request.getParameter("trade_status").getBytes("ISO-8859-1"),"UTF-8");

            //付款金额
            String total_amount = new String(request.getParameter("total_amount").getBytes("ISO-8859-1"),"UTF-8");

            if(trade_status.equals("TRADE_FINISHED")){
                //判断该笔订单是否在商户网站中已经做过处理
                //如果没有做过处理，根据订单号（out_trade_no）在商户网站的订单系统中查到该笔订单的详细，并执行商户的业务程序
                //如果有做过处理，不执行商户的业务程序

                //注意： 尚自习的订单没有退款功能, 这个条件判断是进不来的, 所以此处不必写代码
                //退款日期超过可退款期限后（如三个月可退款），支付宝系统发送该交易状态通知
            }else if (trade_status.equals("TRADE_SUCCESS")){
                //判断该笔订单是否在商户网站中已经做过处理
                //如果没有做过处理，根据订单号（out_trade_no）在商户网站的订单系统中查到该笔订单的详细，并执行商户的业务程序
                //如果有做过处理，不执行商户的业务程序

                //注意：
                //付款完成后，支付宝系统发送该交易状态通知

                // 修改叮当状态，改为 支付成功，已付款; 同时新增支付流水
               
            }
           

        }else {//验证失败
           
        }

        return "success";
    }