文档

小程序支付官方文档

接入步骤

1. 小程序内调用登录接口，获取到用户的openid
2. 调用支付统一下单生成预付订单(参考公用API)
3. 预付订单二次签名(参考公用API)
4. 小程序调起支付API
5. 服务端异步通知处理(参考服务端异步通知)

官方业务流程介绍

代码示例

https://gitee.com/javen205/IJPay-Demo https://github.com/javen205/IJPay-Demo

    /**
     * 微信小程序支付
     */
    public void aappPay(){

        String ip = IpKit.getRealIp(getRequest());
        if (StrKit.isBlank(ip)) {
            ip = "127.0.0.1";
        }

        Map<String, String> params = WxPayApiConfigKit.getWxPayApiConfig()
                .setAttach("IJPay 测试  -By Javen")
                .setBody("IJPay 小程序支付测试  -By Javen")
                .setSpbillCreateIp(ip)
                .setTotalFee("100")
                .setTradeType(WxPayApi.TradeType.JSAPI)
                .setNotifyUrl(notify_url)
                .setOutTradeNo(String.valueOf(System.currentTimeMillis()))
                .build();

        String xmlResult =  WxPayApi.pushOrder(false,params);

log.info(xmlResult);
        Map<String, String> result = PaymentKit.xmlToMap(xmlResult);

        String return_code = result.get("return_code");
        String return_msg = result.get("return_msg");
        if (!PaymentKit.codeIsOK(return_code)) {
            ajax.addError(return_msg);
            renderJson(ajax);
            return;
        }
        String result_code = result.get("result_code");
        if (!PaymentKit.codeIsOK(result_code)) {
            ajax.addError(return_msg);
            renderJson(ajax);
            return;
        }
        // 以下字段在return_code 和result_code都为SUCCESS的时候有返回
        String prepay_id = result.get("prepay_id");
        //封装调起微信支付的参数https://pay.weixin.qq.com/wiki/doc/api/wxa/wxa_api.php?chapter=7_7&index=5
        Map<String, String> packageParams = new HashMap<String, String>();
        packageParams.put("appId", WxPayApiConfigKit.getWxPayApiConfig().getAppId());
        packageParams.put("timeStamp", System.currentTimeMillis() / 1000 + "");
        packageParams.put("nonceStr", System.currentTimeMillis() + "");
        packageParams.put("package", "prepay_id="+prepay_id);
        packageParams.put("signType", "MD5");
        String packageSign = PaymentKit.createSign(packageParams, WxPayApiConfigKit.getWxPayApiConfig().getPaternerKey());
        packageParams.put("paySign", packageSign);

        String jsonStr = JsonKit.toJson(packageParams);
log.info("最新返回小程序支付的参数:"+jsonStr);
        renderJson(jsonStr);
    }