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/Javen205/IJPay
/javen205/IJPay
我们接着上一篇文章支付宝支付-刷卡支付(条码支付)详解 继续来聊聊支付包扫码支付
1、场景介绍
扫码支付,指用户打开支付宝钱包中的“扫一扫”功能,扫描商户针对每个订单实时生成的订单二维码,并在手机端确认支付。
2、调用流程
1、商户系统调用支付宝预下单接口alipay.trade.precreate,获得该订单二维码图片地址。
2、发起轮询获得支付结果:等待5秒后调用交易查询接口alipay.trade.query通过支付时传入的商户订单号(out_trade_no)查询支付结果(返回参数TRADE_STATUS),如果仍然返回等待用户付款(WAIT_BUYER_PAY),则再次等待5秒后继续查询,直到返回确切的支付结果(成功TRADE_SUCCESS 或 已撤销关闭TRADE_CLOSED),或是超出轮询时间。在最后一次查询仍然返回等待用户付款的情况下,必须立即调用交易撤销接口alipay.trade.cancel将这笔交易撤销,避免用户继续支付。
3、除了主动轮询,也可以通过接受异步通知获得支付结果,详见扫码异步通知,注意一定要对异步通知做验签,确保通知是支付宝发出的。
3、使用SDK快速接入
3.1 需要使用到的接口
预下单接口alipay.trade.precreate
交易查询接口alipay.trade.query
交易撤销接口alipay.trade.cancel
扫码异步通知
其中 交易查询接口alipay.trade.query以及交易撤销接口alipay.trade.cancel在上篇文章中已有介绍
3.2 预下单接口alipay.trade.precreate封装
初始化SDK 上篇文章已提到过
static {alipayClient = new DefaultAlipayClient(serverUrl, appId, privateKey, format, charset, alipayPulicKey, signType);}
封装SDK的调用
/*** 扫码支付* https://doc./docs/doc.htm?spm=a219a.7629140.0.0.i0UVZn&treeId=193&articleId=105170&docType=1#s4* @param notifyUrl * @return* @throws AlipayApiException */public static String tradePrecreatePay(AlipayTradePrecreateModel model, String notifyUrl) throws AlipayApiException{AlipayTradePrecreateResponse response = tradePrecreatePayToResponse(model,notifyUrl);return response.getBody();}public static AlipayTradePrecreateResponse tradePrecreatePayToResponse(AlipayTradePrecreateModel model, String notifyUrl) throws AlipayApiException{AlipayTradePrecreateRequest request = new AlipayTradePrecreateRequest();request.setBizModel(model);request.setNotifyUrl(notifyUrl);return alipayClient.execute(request);}
3.3 预下单接口alipay.trade.precreate测试
/*** 扫码支付*/public void tradePrecreatePay() {String subject = "Javen 支付宝扫码支付测试";String totalAmount = "86";String storeId = "123";String notifyUrl = AliPayApi.NOTIFY_DOMAIN + "/alipay/precreate_notify_url";AlipayTradePrecreateModel model = new AlipayTradePrecreateModel();model.setSubject(subject);model.setTotalAmount(totalAmount);model.setStoreId(storeId);model.setTimeoutExpress("5m");model.setOutTradeNo(StringUtils.getOutTradeNo());try {String resultStr = AliPayApi.tradePrecreatePay(model, notifyUrl);JSONObject jsonObject = JSONObject.parseObject(resultStr);String qr_code = jsonObject.getJSONObject("alipay_trade_precreate_response").getString("qr_code");renderText(qr_code);} catch (Exception e) {e.printStackTrace();}}
返回的结果
{"alipay_trade_precreate_response": {"code": "10000","msg": "Success","out_trade_no": "050823252214942","qr_code": "/bax04344igml342yrywa004f"},"sign": "DIeOExAIIF4RhPsHLp4tZtQP15SU4k/CUsJ//Z782HOpTe/BYMK/YjiPv9I2JF6GHSIU+qotprO/unkwf1qN41d9g4qErx7oLpRLxGZgSOMo4js8wBcauN4osXmPRfmDvlCo6cO9s4rj3976223h/8kzBlRp3lpgOnD+uxyQrqqEsb6ddQosbEiqYW3XADu3X9GRTuDaJFsk4tkc1Uly6Mx17SXJs7c49CA0ObLJZ5RsV8Wd55qDWc93FqOKClNikOnFc0QwvAPuLXyW4DFpfdqk4LlegGT33jdfzTuPFoXXnab/P6/dRRGd4ZW82lVAx4pjGhia4Ad+Wb+sNf5QVw=="}
其中qr_code就是二维码的图片地址/bax04344igml342yrywa004f
4、扫码支付异步通知
详细的介绍可以参考官方文档 扫码异步通知 这里直接提供代码
/*** 扫码支付通知*/public void precreate_notify_url(){try {Map<String, String> map = AliPayApi.toMap(getRequest());for (Map.Entry<String, String> entry : map.entrySet()) {System.out.println(entry.getKey()+" = "+entry.getValue());}boolean flag = AlipaySignature.rsaCheckV1(map, AliPayApi.ALIPAY_PUBLIC_KEY, AliPayApi.CHARSET,AliPayApi.SIGN_TYPE);if (flag) {// TODOSystem.out.println("precreate_notify_url success");renderText("success");return;} else {// TODOSystem.out.println("precreate_notify_url failure");renderText("failure");}} catch (AlipayApiException e) {e.printStackTrace();renderText("failure");}}
将异步通知的参数转化为Map
/*** 将异步通知的参数转化为Map* @param request* @return*/public static Map<String, String> toMap(HttpServletRequest request) {System.out.println(">>>>" + request.getQueryString());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);}return params;}