支付宝支付Java

@PostMapping("pay")
@ResponseBody
public Result pay(String taskName, String orderNum, Double amount, Integer payType, HttpServletRequest request) throws IOException, AlipayApiException {
    if (1 == payType) {
        String sign = getAlipaySign(taskName, orderNum, amount);//支付宝支付
        return ResultUtil.success(sign);
    } else {
        Map<String, String> resultMap = getWxPay(orderNum, amount, request);
        return ResultUtil.success(resultMap);
    }
}

  /**
     * 获取支付宝签名串
     *
     * @return
     * @throws IOException
     * @throws AlipayApiException
     */
    public String getAlipaySign(String title, String out_trade_no, Double total_amount) throws IOException, AlipayApiException {
        //实例化客户端
        AlipayClient alipayClient = new
                DefaultAlipayClient(AlipayConfig.URL,
                AlipayConfig.APP_ID, AlipayConfig.APP_PRIVATE_KEY, "json", AlipayConfig.CHARSET, AlipayConfig.ALIPAY_PUBLIC_KEY, AlipayConfig.SIGN_TYPE);
        AlipayTradeAppPayRequest request = new AlipayTradeAppPayRequest();
        AlipayTradeAppPayModel model = new AlipayTradeAppPayModel();
        model.setBody("支付描述");//获取支付类型名称
        model.setSubject("支付标题");//支付标题
        model.setOutTradeNo(out_trade_no);//支付订单号
        model.setTotalAmount(total_amount.toString());
        model.setProductCode("QUICK_MSECURITY_PAY");
        request.setBizModel(model);
        request.setNotifyUrl(AlipayConfig.notifyUrl);
        AlipayTradeAppPayResponse response = alipayClient.sdkExecute(request);
        return response.getBody();
    }

支付回掉方法

  /**
     * 支付成功回调
     *
     * @return
     * @throws IOException
     * @throws AlipayApiException
     */
    @PostMapping("reciveNotify")
    @ResponseBody
    public String reciveNotify(HttpServletRequest request) throws IOException, AlipayApiException {
        System.out.println("支付回调----------------------->");
        //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);
        }
        QueryWrapper queryWrapper = new QueryWrapper();
        queryWrapper.eq("orderNum", params.get("out_trade_no"));
        Order order = orderService.getOne(queryWrapper);
        if (order != null) {
            System.out.println("支付回调----------------------->"+order.toString());
            boolean signVerified = AlipaySignature.rsaCheckV1(params, AlipayConfig.ALIPAY_PUBLIC_KEY, AlipayConfig.CHARSET, AlipayConfig.SIGN_TYPE); //调用SDK验证签名
            System.out.println("支付回调----------------------->"+signVerified);
            if (signVerified) {
                //更新订单信息
                order.setAlipayNum(params.get("out_trade_no"));
                order.setYwid(params.get("out_biz_no"));
                order.setState(2);
                orderService.updateById(order);
               
                return "success";
            }
        }
        return "error";
    }