实现支付宝支付，开发其实不难，主要是申请和配置一些秘钥麻烦
先申请一个应用，应用对应了不同的功能，需要进行审核才能通过。
为了开放方便，我申请了一个沙箱应用
其中箭头所示的为这个应用的公钥 需要在代码中配置
私钥的生成需要参考官方链接，下载到本地生成： https://docs./291/105971
下面进行开发的配置：
引入依赖
<!-- 实现支付宝支付接口--><!-- /artifact/com.alipay.sdk/alipay-sdk-java --><dependency><groupId>com.alipay.sdk</groupId><artifactId>alipay-sdk-java</artifactId><version>3.4.27.ALL</version></dependency>
配置支付的客户端 属性信息
#支付宝配置#支付同步返回地址ali_return_url =http://106.13xxxx251:8080/tr/send/r1eg3sister/code111 这是get请求的地址，在支付完成之后有支付宝在浏览器中跳转#支付异步通知地址ali_notify_url =http://106.13.zzzz1:8080/tr/send/register/code 这是post请求的地址由支付宝异步调用服务器程序，不要设置登录拦截的接口，这也是支付完成的一个确认接口，需要给支付宝返回一个success 字段，否则支付宝会分时间段不断请求接口。具体参考其他博客。 这里可以做一些业务处理#产品码product_no = FAST_INSTANT_TRADE_PAY#超时时间time_express = 15m#支付网关url =/gateway.do （沙箱网关）#商户号appid =57142222 （这是应用的ID）#私钥private_key =MIIEvAIBADATQ==（此处的一堆秘钥，是生成在本地的秘钥）#公钥ali_public_key =MIIBIjANBgkqhkiG9w0QAB （这是一个应用对应的公钥，是上面截图箭头指示的内容）#加密方式sign_type = RSA2
/*** 支付操作业务* Created by huangch on /1/20 19:33*/@Transactional@Servicepublic class AlipayServiceImpl implements AlipayService {@Value("${ali_return_url}")private String ali_return_url;@Value("${ali_notify_url}")private String ali_notify_url;@Value("${product_no}")private String product_no;@Value("${time_express}")private String time_express;@Value("${url}")private String url;@Value("${appid}")private String appid;@Value("${private_key}")private String private_key;@Value("${ali_public_key}")private String ali_public_key;@Value("${sign_type}")private String sign_type;public static final String TRADE_SUCCESS = "TRADE_SUCCESS"; //支付成功标识public static final String TRADE_CLOSED = "TRADE_CLOSED";//交易关闭/*** 返回收钱码表单* @param map* @return*/@Overridepublic String alipay(Map<String,Object> map) {String orderId = (String) map.get("orderId");String orderName = (String) map.get("orderName");// 判断用户是否登录// 判断订单是否可以支付// 记录订单状态为 待支付状态// 判断if(true){}AlipayClient alipayClient = new DefaultAlipayClient(url, appid, private_key, "json", "utf-8", ali_public_key, sign_type); //获得初始化的AlipayClientAlipayTradePagePayRequest alipayRequest = new AlipayTradePagePayRequest();//创建API对应的requestalipayRequest.setReturnUrl(ali_return_url);alipayRequest.setNotifyUrl(ali_notify_url); //在公共参数中设置回跳和通知地址alipayRequest.setBizContent("{" +" \"out_trade_no\":\""+orderId+"\"," +" \"product_code\":\"FAST_INSTANT_TRADE_PAY\"," +" \"total_amount\":88.88," +" \"subject\":\""+orderName+"\"," +" \"body\":\"Iphone6 16G\"," +" \"passback_params\":\"merchantBizType%3d3C%26merchantBizNo%3d010101111\"," +" \"extend_params\":{" +" \"sys_service_provider_id\":\"2088511833117846\"" +" }"+" }");//填充业务参数String form="";try {form = alipayClient.pageExecute(alipayRequest).getBody(); //调用SDK生成表单} catch (AlipayApiException e) {e.printStackTrace();}return form;}@Overridepublic String synchronous(HttpServletRequest request) {Map<String, String> parameters = new HashMap<>();Map<String, String[]> requestParams = request.getParameterMap();//log.info("支付宝同步参数", requestParams);for (Map.Entry<String, String[]> entry : requestParams.entrySet()) {String key = entry.getKey();String[] values = entry.getValue();String valueStr = "";for (int i = 0; i < values.length; i++) {valueStr = (i == values.length - 1) ? valueStr + values[i] : valueStr + values[i] + ",";}parameters.put(key, valueStr);}//记录日志String merchantOrderNo = request.getParameter("out_trade_no");//商户订单号// cashLogMapper.add(request.getParameter("out_trade_no"), "SYNCHRONOUS", JSON.toJSONString(parameters), new Date());return "<html>\n" +"<head>\n" +"<script type=\"text/javascript\"> function load() { window.close(); } </script>\n" +"</head>\n" +"<body \"" +"load()\"> </body>\n" +"</html>";}@Overridepublic void notify(HttpServletRequest request, HttpServletResponse response) {//接收参数进行校验Map<String, String> parameters = new HashMap<>();Map<String, String[]> requestParams = request.getParameterMap();for (Map.Entry<String, String[]> entry : requestParams.entrySet()) {String key = entry.getKey();String[] values = entry.getValue();String valueStr = "";for (int i = 0; i < values.length; i++) {valueStr = (i == values.length - 1) ? valueStr + values[i] : valueStr + values[i] + ",";}parameters.put(key, valueStr);}//log.info("parameters is [parameters={}]", parameters);String appId = request.getParameter("app_id");//appidString merchantOrderNo = request.getParameter("out_trade_no");//商户订单号String orderId = "123123"; //cashMapper.getCashByMerchantOrderNo(merchantOrderNo).getOrderId();if (orderId == null) {//log.error("orderId is null");//ReturnData.fail(ReturnCode.SERVER_EXCEPTION);}//log.info("orderId: {}", orderId);String payState = request.getParameter("trade_status");//交易状态String encodeOrderNum = null;//cashLogMapper.add(request.getParameter("out_trade_no"), "NOTIFY", JSON.toJSONString(parameters), new Date());try {encodeOrderNum = URLDecoder.decode(request.getParameter("passback_params"), "UTF-8");//log.info("encodeOrderNum is [encodeOrderNum={}]", encodeOrderNum);boolean signVerified;signVerified = AlipaySignature.rsaCheckV1(parameters, ali_public_key, "UTF-8", sign_type);//验证签名//log.info("signVerified is [signVerified={}]", signVerified);if (signVerified) { //通过验证//log.info("payState: {}", payState);if (payState.equals(TRADE_SUCCESS)) {//判断订单号与插入的订单号是否一样if (merchantOrderNo.equals(encodeOrderNum) == false || appid.equals(appId) == false) {//log.info("vali failure");//cashMapper.update(merchantOrderNo, 4);response.getOutputStream().print("failure");return;}//cashMapper.update(merchantOrderNo, 3);//orderMapper.afterPay(orderId);response.getOutputStream().print("success");return;} else if (payState.equals(TRADE_CLOSED)) { //交易关闭//cashMapper.update(merchantOrderNo, 7);} else {//cashMapper.update(merchantOrderNo, 4);response.getOutputStream().print("failure");return;}} else {//签名校验失败更状态//cashMapper.update(merchantOrderNo, 4);response.getOutputStream().print("failure");return;}//log.info("encodeOrderNum is [encodeOrderNum={}]", encodeOrderNum);//cashMapper.update(merchantOrderNo, 4);response.getOutputStream().print("failure");return;} catch (Exception e) {//log.error(e.getErrMsg());throw new RuntimeException("调用支付宝接口发生异常");}}}
//1.申请付款@ApiOperation("申请付款")@AuthCheck("no")@RequestMapping(value = "/order/pay", method = RequestMethod.GET)public void alipay(String amount, String orderName, String orderId, HttpServletResponse httpResponse) throws Exception {Map<String,Object> map = new HashMap<>();map.put("orderId",orderId);map.put("orderName",orderName);map.put("amount",amount);String form = alipayService.alipay(map);httpResponse.setContentType("text/html;charset=" + "utf-8");httpResponse.getWriter().write(form);//直接将完整的表单html输出到页面httpResponse.getWriter().flush();httpResponse.getWriter().close();}
这里值做了一个支付接口的方法，以form表单的形式发送到前端支付，注意填写相关的订单信息和 业务逻辑，这里就不多说了
在异步请求的接口中，支付宝只能请求暴露在公网上的接口，本地debug一般无法进入接口。
随笔写的一点东西， 希望能帮到有些朋友，以下是我参考的一篇博客
/chire_jr/article/details/80051661
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