支付宝支付java版实战（含视频讲解）
1.背景
实际开发中用到支付宝支付的概念非常大......
这里重点分析一下支付宝支付实际生产必须要实现的功能
1.获取支付链接（统一下单）
2.支付回调（异步通知）
3.统一下单交易查询
4.退款
5.退款查询
6.对账单下载
官方接口文档如下
https://opendocs.alipay.com/apis
2.需要的账号数据
appid
公钥
私钥
网外可以访问的支付宝异步回调地址，如果没有学习可以使用免费的：https://www.cnblogs.com/newAndHui/p/14241177.html
当然实际生产这些是需要公司资质申请才可以的
但是支付做的非常人性化，提供了沙箱环境给我们测试、开发用
沙箱环境配置文档（很简单的几部就搞定）
https://opendocs.alipay.com/open/200/105311
沙箱环境配置好后可以得到如下数据
appid
公钥
私钥
买家支付宝账号（用于测试的时候登录付款）
商家账号（这里用不到）
配置好后截图如下：
3.获取支付链接（统一下单）
这里以手机网站支付为例，因为这个应用场景最常见
文档：https://opendocs.alipay.com/open/203/105287
统一下单代码：
package com.ldp.user.service.impl; import cn.hutool.core.util.URLUtil; import com.alibaba.fastjson.JSON; import com.alibaba.fastjson.JSONObject; import com.alipay.api.AlipayClient; import com.alipay.api.DefaultAlipayClient; import com.alipay.api.request.AlipayTradeWapPayRequest; import com.alipay.api.response.AlipayTradeWapPayResponse; import com.ldp.user.common.constant.AliPayData; import com.ldp.user.common.constant.PayConstant; import com.ldp.user.common.exception.AliPayException; import com.ldp.user.entity.bo.PayBO; import com.ldp.user.entity.vo.PayVO; import com.ldp.user.service.IPayService; import lombok.extern.slf4j.Slf4j; import org.springframework.stereotype.Service; import java.util.HashMap; /** * @author 姿势帝-博客园 * @address https://www.cnblogs.com/newAndHui/ * @WeChat 851298348 * @create 01/08 9:04 * @description */ @Service @Slf4j public class AliPayService implements IPayService { // 缓存阿里客户端 private static HashMap<String, AlipayClient> payClient = new HashMap<>(); @Override public String getPayType() { return PayConstant.ALIPAY; } @Override public PayVO getPayInfo(PayBO payBO) throws Exception { // 实际生中这里应该根据订单号查询产品 与 查询 收款账号数据 // 这里模拟订单数据 账号使用支付宝的沙箱环境 // 沙箱环境文档 https://opendocs.alipay.com/open/200/105311 payBO.setAppId("2016092900623927"); payBO.setPublicKey(AliPayData.PUBLIC_KEY); payBO.setPrivateKey(AliPayData.PRIVATE_KEY); payBO.setPayUrl("https://openapi.alipaydev.com/gateway.do"); payBO.setAsynchronousNotifyUrl("http://lidongping.free.idcfengye.com/api/async/alipay/payment"); payBO.setSynchronizationNotifyUrl("http://lidongping.free.idcfengye.com/api/sync/alipay/payment"); payBO.setPayTitle("购买课程测试"); payBO.setPayMoney(100.01); // 准备支付客户端 AlipayClient client = initAlipay(payBO); AlipayTradeWapPayRequest request = new AlipayTradeWapPayRequest(); // 设置异步通知地址 request.setNotifyUrl(payBO.getAsynchronousNotifyUrl()); // 设置同步通知地址 request.setReturnUrl(payBO.getSynchronizationNotifyUrl()); JSONObject bizContent = new JSONObject(); String payTitle = URLUtil.encode(payBO.getPayTitle(), "utf-8"); bizContent.put("subject", payTitle); bizContent.put("out_trade_no", payBO.getOrderNo()); bizContent.put("total_amount", String.format("%.2f", payBO.getPayMoney())); //用户付款中途退出返回商户网站的地址(同步返回地址) bizContent.put("quit_url", payBO.getSynchronizationNotifyUrl()); bizContent.put("product_code", "QUICK_WAP_WAY"); //90分钟超时 bizContent.put("timeout_express", "90m"); request.setBizContent(bizContent.toJSONString()); log.info("支付宝下单参数：" + JSON.toJSONString(request)); AlipayTradeWapPayResponse response = client.pageExecute(request); log.info("支付宝下单响应：" + JSON.toJSONString(response)); if (!response.isSuccess()) { throw new AliPayException(response.getMsg()); } PayVO payVO = new PayVO().setOrderNo(payBO.getOrderNo()).setPayInfo(response.getBody()); return payVO; } /** * @param payBO * @return */ private AlipayClient initAlipay(PayBO payBO) { log.info("收款支付宝账号客户端初始化,url:{},AppId:{}", payBO.getPayUrl(), payBO.getAppId()); AlipayClient alipayClient = payClient.get(payBO.getAppId()); if (alipayClient != null) { return alipayClient; } alipayClient = new DefaultAlipayClient(payBO.getPayUrl(), payBO.getAppId(), payBO.getPrivateKey(), "json", "utf-8", payBO.getPublicKey(), "RSA2"); payClient.put(payBO.getAppId(), alipayClient); return alipayClient; } }
4.支付回调
文档：https://opendocs.alipay.com/open/203/105286/
代码：
package com.ldp.user.controller; import cn.hutool.core.util.StrUtil; import cn.hutool.extra.servlet.ServletUtil; import com.alipay.api.internal.util.AlipaySignature; import com.ldp.user.common.base.BaseResponse; import com.ldp.user.common.base.ResponseBuilder; import com.ldp.user.common.constant.AliPayConstant; import com.ldp.user.common.constant.AliPayData; import lombok.extern.slf4j.Slf4j; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.PostMapping; import org.springframework.web.bind.annotation.RestController; import javax.servlet.http.HttpServletRequest; import java.util.Map; /** * @author 姿势帝-博客园 * @address https://www.cnblogs.com/newAndHui/ * @WeChat 851298348 * @create 01/09 6:24 * @description */ @RestController @Slf4j public class AliPayController { /** * 支付宝支付 异步回调 * 官方文档 * https://opendocs.alipay.com/open/203/105286/ * * @param request * @return * @throws Exception */ @PostMapping("/async/alipay/payment") public String notifyPaymentResult(HttpServletRequest request) throws Exception { log.info("异步回调...."); Map<String, String> paramsMap = ServletUtil.getParamMap(request); // 解析参数 String tradeStatus = paramsMap.get("trade_status"); String totalAmount = paramsMap.get("total_amount"); String orderNo = paramsMap.get("out_trade_no"); String tradeNo = paramsMap.get("trade_no"); String buyerId = paramsMap.get("buyer_id"); if (StrUtil.isEmpty(tradeStatus) || StrUtil.isEmpty(orderNo) || (!tradeStatus.equals(AliPayConstant.WAIT_BUYER_PAY) && !tradeStatus.equals(AliPayConstant.TRADE_CLOSED) && !tradeStatus.equals(AliPayConstant.TRADE_SUCCESS) && !tradeStatus.equals(AliPayConstant.TRADE_FINISHED))) { log.error("支付宝回调参数异常"); return AliPayConstant.RESP_FAILURE; } // 不处理状态 if (tradeStatus.equals(AliPayConstant.WAIT_BUYER_PAY) || tradeStatus.equals(AliPayConstant.TRADE_CLOSED)) { return AliPayConstant.RESP_SUCCESS; } // TODO 根据订单号获取收款账号数据... 实际生产应该这样写 这里略 // 这里使用模拟数据 String publicKey = AliPayData.PUBLIC_KEY; // 参数验签 boolean signPassed = AlipaySignature.rsaCheckV1(paramsMap, publicKey, "utf-8", "RSA2"); if (!signPassed) { log.error("支付宝验签失败"); return AliPayConstant.RESP_FAILURE; } // TODO 更新数据库订单数据 ... 这里略 return AliPayConstant.RESP_SUCCESS; } /** * 支付宝支付 同步返回 * * @return * @throws Exception */ @GetMapping("/async/alipay/payment") public BaseResponse async() { log.info("同步返回....."); // TODO 同步返回一般是指用户支付完成后返回的页面，通常是一个页面，这里模拟一下同步返回... return ResponseBuilder.success("同步返回额...."); } }
5.测试
1.调用获取支付信息接口
/** * 支付宝沙箱环境 支付账号 * 买家账号djpbvo6259@sandbox.com * 登录密码111111 * 支付密码111111 */ @Test void getPayInfo() { String url = urlLocal + "/userOrder/payInfo"; System.out.println("请求地址:" + url); HttpRequest request = HttpUtil.createRequest(Method.GET, url); Map<String, Object> map = new HashMap<>(); map.put("orderNo", "NO" + System.currentTimeMillis()); // 微信支付 wechat 支付宝 alipay map.put("payCategory", "alipay"); // 201 jsapi支付 , 202 微信H5 101支付宝H5 map.put("payType", "101"); request.form(map); System.out.println("请求参数:" + map); request.header("X-Real_IP", "192.168.5.195"); request.setConnectionTimeout(60 * 1000); String respone = request.execute().body(); System.out.println("响应结果:" + respone); }
测试请求如下：
请求地址:http://localhost:8080/api/userOrder/payInfo 请求参数:{payCategory=alipay, orderNo=NO1610170051893, payType=101} 响应结果:{"message":"success","code":100,"data":{"orderNo":"NO1610170051893","payInfo":"<form name=\"punchout_form\" method=\"post\" action=\"https://openapi.alipaydev.com/gateway.do?charset=utf-8&method=alipay.trade.wap.pay&sign=GDby0sDLbIeH8Q7lbE7cls9Ar5uF0hPsy7f8BVxZff6%2B38rRXioUtAhYhf9vEd464vCV0spWLIpZmoL0Kx9HtIkHdZXDt90yL37JHKgedvn292kE3sqYHnF0mpXBLqFcbwxllxkq%2BpS8IQA7KKZWADTuHDPdGOYy6%2BZD3gP607aJ7i34hNKUReCeFcAc3M0ctUubn6u%2F%2FiC%2FXQQARI%2FJ7pR2MMD86m5GKuev%2FNv1hUvYDvW0SMH9IADGxoCo4Fn4faCX2Yz3HTjUWAgpzQun6eohEnyRD%2Fg1JLGMZ2PJc4NYnYpDDmFYHf430nQvIiKpQ%2BR3wO%2BUph54zKBsMIS7pA%3D%3D&return_url=http%3A%2F%2Flidongping.free.idcfengye.com%2Fapi%2Fsync%2Falipay%2Fpayment¬ify_url=http%3A%2F%2Flidongping.free.idcfengye.com%2Fapi%2Fasync%2Falipay%2Fpayment&version=1.0&app_id=2016092900623927&sign_type=RSA2×tamp=2021-01-09+13%3A27%3A32&alipay_sdk=alipay-sdk-java-3.7.26.ALL&format=json\">\n<input type=\"hidden\" name=\"biz_content\" value=\"{"out_trade_no":"NO1610170051893","total_amount":"100.01","quit_url":"http://lidongping.free.idcfengye.com/api/sync/alipay/payment","subject":"%E8%B4%AD%E4%B9%B0%E8%AF%BE%E7%A8%8B%E6%B5%8B%E8%AF%95","timeout_express":"90m","product_code":"QUICK_WAP_WAY"}\">\n<input type=\"submit\" value=\"立即支付\" style=\"display:none\" >\n</form>\n<script>document.forms[0].submit();</script>"}}
payInfo是支付宝返回的支付信息，测试是建议在断点的情况下复制出来，因为输出后form表单中有转移符
2.获得支付信息后，模拟访问html页面中
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>支付测试</title> </head> <body> <h2>test ali pay</h2> <div> <!-- TODO 这里的代码时获取支付信息时支付宝返回的，实际生产中应该在前端填充然后会自动跳转， 这里只是测试，手动复制接口获得的支付信息，然后在使用浏览器访问该html页面，即可就如支付宝支付页面--> <form name="punchout_form" method="post" action="https://openapi.alipaydev.com/gateway.do?charset=utf-8&method=alipay.trade.wap.pay&sign=fMqWzKUHlcaj0UkqXlR%2Fl4Gx4bmPQ7xRIxZ49n%2BXCjVT2wPtEmUyCfJG7d1x0UfAXUhgaCnEgu8vS1IjBPH5aAfCHni5UMDOJBDArAqcJvGvZkp43zCp9f9fFsPf4kUwXOLCvpO%2BjqEbM2puF6k5JpTT%2BsBWIo9CaILT4GC5fvyTXxAC6DmMwlN%2F4NrsbFXbQjxdnMrF4LTLWJmPFZn%2BftdLIstsgh79RvS0r%2BnVy6dDpaEbxCYIlal%2FGGhdnp8bttnI3WHxv4fZqu8qiyGHFdQ6N9ZHx09HgthCnd7PJqkO6IOy1aeYo4ZhSmSRzQxbMUTqPXIS7orNPHMtJBdcNg%3D%3D&return_url=http%3A%2F%2Flidongping.free.idcfengye.com%2Fapi%2Fwc%2Fnotify%2Fcode¬ify_url=http%3A%2F%2Flidongping.free.idcfengye.com%2Fapi%2Fwc%2Fnotify%2Fcode&version=1.0&app_id=2016092900623927&sign_type=RSA2×tamp=2021-01-08+22%3A01%3A19&alipay_sdk=alipay-sdk-java-3.7.26.ALL&format=json"> <input type="hidden" name="biz_content" value="{"out_trade_no":"NO1610114479772","total_amount":"100.01","quit_url":"http://lidongping.free.idcfengye.com/api/wc/notify/code","subject":"%E8%B4%AD%E4%B9%B0%E8%AF%BE%E7%A8%8B%E6%B5%8B%E8%AF%95","timeout_express":"90m","product_code":"QUICK_WAP_WAY"}"> <input type="submit" value="立即支付" style="display:none"> </form> <script>document.forms[0].submit();</script> </div> </body> </html>
3.访问html页面
因为我们是在浏览器上演示，选择继续浏览器付款
选择支付宝登录
4.登录沙箱环境买家账号
5.输入密码确认支付
6.支付宝异步回调
异步处理代码
/** * 支付宝支付 异步回调 * 官方文档 * https://opendocs.alipay.com/open/203/105286/ * * @param * @return * @throws Exception */ @PostMapping("/async/alipay/payment") public String notifyPaymentResult(@RequestParam Map<String, String> paramsMap) throws Exception { log.info("异步回调...."); // 解析参数 String tradeStatus = paramsMap.get("trade_status"); String totalAmount = paramsMap.get("total_amount"); String orderNo = paramsMap.get("out_trade_no"); String tradeNo = paramsMap.get("trade_no"); String buyerId = paramsMap.get("buyer_id"); if (StrUtil.isEmpty(tradeStatus) || StrUtil.isEmpty(orderNo) || (!tradeStatus.equals(AliPayConstant.WAIT_BUYER_PAY) && !tradeStatus.equals(AliPayConstant.TRADE_CLOSED) && !tradeStatus.equals(AliPayConstant.TRADE_SUCCESS) && !tradeStatus.equals(AliPayConstant.TRADE_FINISHED))) { log.error("支付宝回调参数异常"); return AliPayConstant.RESP_FAILURE; } // 不处理状态 if (tradeStatus.equals(AliPayConstant.WAIT_BUYER_PAY) || tradeStatus.equals(AliPayConstant.TRADE_CLOSED)) { return AliPayConstant.RESP_SUCCESS; } // TODO 根据订单号获取收款账号数据... 实际生产应该这样写 这里略 // 这里使用模拟数据 String publicKey = AliPayData.PUBLIC_KEY; // 参数验签 boolean signPassed = AlipaySignature.rsaCheckV1(paramsMap, publicKey, "utf-8", "RSA2"); if (!signPassed) { log.error("支付宝验签失败"); return AliPayConstant.RESP_FAILURE; } // TODO 更新数据库订单数据和缓存 ... 这里略 // 这里只是模拟方放入缓存，便于前端查询订单 60 * 60 * 2L 表示缓存2小时 RedisUtil.set(orderNo, JSON.toJSON(paramsMap), 60 * 60 * 2L); log.info("异步处理成功............."); return AliPayConstant.RESP_SUCCESS; }
异步处理结果
01-09 22:42:17.323 [http-nio-8080-exec-4] INFO c.l.u.c.i.HttpServletRequestWrapperFilter - ContentType: application/x-www-form-urlencoded; charset=utf-8 01-09 22:42:17.323 [http-nio-8080-exec-4] INFO c.l.u.c.i.HttpServletRequestWrapperFilter - 请求地址: /api/async/alipay/payment 01-09 22:42:17.323 [http-nio-8080-exec-4] INFO c.l.u.c.i.HttpServletRequestWrapperFilter - 请求方法: POST 01-09 22:42:17.323 [http-nio-8080-exec-4] INFO c.l.u.c.i.HttpServletRequestWrapperFilter - 请求参数: gmt_create=2021-01-09 22:42:11&charset=utf-8&seller_email=ybtvrf9123@sandbox.com&subject=购买课程测试&sign=md0r4kl8kNllBUv+kTZXH/QnaVJuqyfEVwO5swkTDc08eHw0yM6JY/KASVAuYQV/1eJf4X1DRNmxN0Tr786k7PclEedO4wm4Qd4xC3Har5h6NlaGKCvWGRGfeIiaypxm4ILgct9MHKtCPztJDiU2Cg03vzqmidkMrdKcTr2RZN0ZgHGCzNodbTyp5ijt7purGFAdLEyAWfDjsLwMXUSgiSqhYhqe6qMm1meSVSjQkLH9e0GlJGgUU7pxjEQesrLcp6fzFhOVF0wwsccZeXJ+fFWLewTlJTb8L+ER8r1tGLBPMKATfGwuNkUWTUuEjsJXgp07qmNBgbAFQdnvkqZ4bg==&buyer_id=2088102178030268&invoice_amount=100.01¬ify_id=2021010900222224212030260509089969&fund_bill_list=[{"amount":"100.01","fundChannel":"ALIPAYACCOUNT"}]¬ify_type=trade_status_sync&trade_status=TRADE_SUCCESS&receipt_amount=100.01&buyer_pay_amount=100.01&app_id=2016092900623927&sign_type=RSA2&seller_id=2088102177806680&gmt_payment=2021-01-09 22:42:12¬ify_time=2021-01-09 22:42:13&version=1.0&out_trade_no=NO1610203242503&total_amount=100.01&trade_no=2021010922001430260501106994&auth_app_id=2016092900623927&buyer_logon_id=djp***@sandbox.com&point_amount=0.00 01-09 22:42:17.323 [http-nio-8080-exec-4] INFO com.ldp.user.controller.AliPayController - 异步回调.... 01-09 22:42:17.339 [http-nio-8080-exec-4] INFO com.ldp.user.controller.AliPayController - 异步处理成功............. 01-09 22:42:17.339 [http-nio-8080-exec-4] INFO c.l.u.c.i.HttpServletRequestWrapperFilter - 响应结果: success 01-09 22:42:17.339 [http-nio-8080-exec-4] INFO c.l.u.c.i.HttpServletRequestWrapperFilter - HTTP状态: 200 01-09 22:42:17.339 [http-nio-8080-exec-4] INFO c.l.u.c.i.HttpServletRequestWrapperFilter - 处理时长: 16毫秒
7.同步返回
/** * 支付宝支付 同步返回 * * @return * @throws Exception */ @GetMapping("/sync/alipay/payment") public BaseResponse async() { log.info("同步返回....."); // TODO 同步返回一般是指用户支付完成后返回的页面，通常是一个页面，这里模拟一下同步返回... return ResponseBuilder.success("同步返回额...."); }
7.查询订单支付状态
/** * 获取支付信息 * <p> * * @param orderNo * @return */ @GetMapping("/order") public BaseResponse getOrder(String orderNo) throws Exception { // TODO 实际生产中应该根据订单号 先查询缓存，缓存没有在查询数据库 // 这里只是测试，只查询缓存 Object order = RedisUtil.get(orderNo); if (null == order) { // TODO 查询数据库 略 } return ResponseBuilder.success(order); }
6.小结
1.这里代码是实际开发中的代码，只是将业务逻辑去掉，架构模式保留，如果要完整的代码可以找我拿源码；
2.这里暂时只是演示下单和回调接口，后面在组织项目的时候再详细讲解；
3.如果看了博客后还是是很理解，该博客有视频详细的讲解与演示，可以看视频讲解或单独问我；
