SpringBoot整合Vue实现微信扫码支付以及微信退款功能详解
直接上代码,在order模块添加依赖
<dependency> <groupId>com.github.wxpay</groupId> <artifactId>wxpay-sdk</artifactId> <version>0.0.3</version> </dependency>
在配置类添加申请的商家号信息
#关联的公众号appid weixin.pay.appid=wxXXXXXXX #商户号 weixin.pay.partner=XXXXXXXXX #商户key weixin.pay.partnerkey=XXXXXXXXXX
添加微信生成二维码service
@Service public class WeiXinServiceImpl implements WeiXinService { @Autowired private PaymentInfoService paymentInfoService; @Autowired private OrderInfoService orderInfoService; @Autowired private WeiXinService weiXinService; //生成支付的二维码 @Override public Map createNative(Long orderId) { //支付记录表添加数据 //根据单号查询订单相关信息 OrderInfo orderInfo = orderInfoService.getById(orderId); if (orderInfo == null){ throw new OrderException(20001,"订单不存在"); } //添加订单状态 paymentInfoService.savePaymentInfo(orderInfo,PaymentTypeEnum.WEIXIN.getStatus()); //调用微信接口返回二维码 try { //2 调用微信接口,得到二维码地址等信息 //封装传递微信地址参数 Map paramMap = new HashMap(); paramMap.put("appid", ConstantPropertiesUtils.APPID); //公众号id paramMap.put("mch_id", ConstantPropertiesUtils.PARTNER); //商户号 paramMap.put("nonce_str", WXPayUtil.generateNonceStr()); //随机字符串,调用工具类 Date reserveDate = orderInfo.getReserveDate(); String reserveDateString = new DateTime(reserveDate).toString("yyyy/MM/dd"); String body = reserveDateString + "就诊"+ orderInfo.getDepname(); paramMap.put("body", body);//扫码后手机显示内容 paramMap.put("out_trade_no", orderInfo.getOutTradeNo()); //订单流水号 //paramMap.put("total_fee", order.getAmount().multiply(new BigDecimal("100")).longValue()+""); paramMap.put("total_fee", "1");//TODO 为了测试 支付金额 paramMap.put("spbill_create_ip", "127.0.0.1"); //终端ip paramMap.put("notify_url", "http://xxxxxxxxx");//回调地址 paramMap.put("trade_type", "NATIVE"); //二维码类型 //请求微信生成二维码接口 HttpClient client = new HttpClient("https://api.mch.weixin.qq.com/pay/unifiedorder"); //设置post请求相关参数 //微信支付要求传递参数xml格式 //把封装map集合变成xml,加密处理,传输 String xml = WXPayUtil.generateSignedXml(paramMap, ConstantPropertiesUtils.PARTNERKEY); client.setXmlParam(xml); //支持https协议 client.setHttps(true); //发送 client.post(); //调用微信接口,返回数据,xml格式的数据 String resultXml = client.getContent(); System.out.println("微信二维码:"+resultXml); //把xml格式数据转换map Map<String, String> resultMap = WXPayUtil.xmlToMap(resultXml); Map map = new HashMap<>(); map.put("orderId", orderId); map.put("totalFee", orderInfo.getAmount()); map.put("resultCode", resultMap.get("result_code")); map.put("codeUrl", resultMap.get("code_url")); //微信二维码地址 return map; } catch (Exception e) { e.printStackTrace(); throw new orderException(20001,"生成二维码失败"); } } }
控制层
@RestController @RequestMapping("/api/order/weixin") public class WeixinController { @Autowired private WeiXinService weixinPayService; /** * 下单 生成二维码 */ @GetMapping("/createNative/{orderId}") public R createNative( @ApiParam(name = "orderId", value = "订单id", required = true) @PathVariable("orderId") Long orderId) { Map map = weixinPayService.createNative(orderId); return R.ok().data(map); } }
前端微信支付二维码,wx.js定义方法
createNative(orderId) { return request({ url: `/api/order/weixin/createNative/${orderId}`, method: 'get' }) }
显示二维码需要前端安装插件 安装npm install vue-qriously
订单详情页,修改order/show.vue组件
import weixinApi from '@/api/yygh/wx' <!-- 微信支付弹出框 --> <el-dialog :visible.sync="dialogPayVisible" style="text-align: left" :append-to-body="true" width="500px" @close="closeDialog"> <div class="container"> <div class="operate-view" style="height: 350px;"> <div class="wrapper wechat"> <div> <qriously :value="payObj.codeUrl" :size="220"/> <div style="text-align: center;line-height: 25px;margin-bottom: 40px;"> 请使用微信扫一扫<br/> 扫描二维码支付 </div> </div> </div> </div> </div> </el-dialog> //生成二维码 pay() { //弹框 this.dialogPayVisible = true //调用接口 weixinApi.createNative(this.orderId).then(response => { this.payObj = response.data if(this.payObj.codeUrl == '') { this.dialogPayVisible = false this.$message.error("支付错误") } else { //每隔3秒查询一次支付状态 this.timer = setInterval(()=>{ this.queryPayStatus(this.orderId) },3000) } }) },
查询订单支付状态,添加定时器方法,每隔3秒去查询一次支付状态,api
queryPayStatus(orderId) { return request({ url: `/api/order/weixin/queryPayStatus/${orderId}`, method: 'get' }) },
后端,weixinservice封装信息请求微信提供的接口,判断是否支付成功,因为微信返回的是xml文件,所以需要转换
//调用微信接口查询支付状态 @Override public Map queryPayStatus(Long orderId, String paymentType) { //1 根据orderId查询订单信息 OrderInfo orderInfo = orderInfoService.getById(orderId); if(orderInfo == null) { throw new orderException(20001,"订单不存在"); } try { //2 封装微信接口需要数据 Map paramMap = new HashMap<>(); paramMap.put("appid", ConstantPropertiesUtils.APPID); paramMap.put("mch_id", ConstantPropertiesUtils.PARTNER); paramMap.put("out_trade_no", orderInfo.getOutTradeNo()); paramMap.put("nonce_str", WXPayUtil.generateNonceStr()); //3 调用微信接口,传递数据,设置参数 HttpClient client = new HttpClient("https://api.mch.weixin.qq.com/pay/orderquery"); client.setXmlParam(WXPayUtil.generateSignedXml(paramMap,ConstantPropertiesUtils.PARTNERKEY)); client.setHttps(true); client.post(); //4 获取微信接口返回数据 String xml = client.getContent(); System.out.println("支付状态返回xml: "+xml); Map<String, String> resultMap = WXPayUtil.xmlToMap(xml); return resultMap; } catch (Exception e) { e.printStackTrace(); throw new orderException(20001,"查询失败"); } }
支付成功后,更新状态
控制层,查询状态
@ApiOperation(value = "查询支付状态") @GetMapping("/queryPayStatus/{orderId}") public Result queryPayStatus( @ApiParam(name = "orderId", value = "订单id", required = true) @PathVariable("orderId") Long orderId) { //调用查询接口 Map<String, String> resultMap = weixinPayService.queryPayStatus(orderId, PaymentTypeEnum.WEIXIN.name()); if (resultMap == null) {//出错 return Result.fail().message("支付出错"); } if ("SUCCESS".equals(resultMap.get("trade_state"))) {//如果成功 //更改订单状态,处理支付结果 String out_trade_no = resultMap.get("out_trade_no"); paymentInfoService.paySuccess(out_trade_no, PaymentTypeEnum.WEIXIN.getStatus(), resultMap); return Result.ok().message("支付成功"); } return Result.ok().message("支付中"); }
退款
退款与支付唯一不同的是需要在下载微信提供的退款证书,下载好后通过配置文件加载退款证书路径
weixin.cert=C:\\apiclient_cert.p12
weixinservice中
//退款 @Override public Boolean refund(Long orderId) { //1 根据订单号查询订单支付记录信息 QueryWrapper<PaymentInfo> wrapper = new QueryWrapper<>(); wrapper.eq("order_id",orderId); PaymentInfo paymentInfo = paymentInfoService.getOne(wrapper); //2 TODO 添加退款信息到退款表 try { //3 调用微信退款接口 //封装微信接口需要数据 Map<String,String> paramMap = new HashMap<>(8); paramMap.put("appid",ConstantPropertiesUtils.APPID); //公众账号ID paramMap.put("mch_id",ConstantPropertiesUtils.PARTNER); //商户编号 paramMap.put("nonce_str",WXPayUtil.generateNonceStr()); paramMap.put("transaction_id",paymentInfo.getTradeNo()); //微信订单号 paramMap.put("out_trade_no",paymentInfo.getOutTradeNo()); //商户订单编号 paramMap.put("out_refund_no","tk"+paymentInfo.getOutTradeNo()); //商户退款单号 // paramMap.put("total_fee",paymentInfoQuery.getTotalAmount().multiply(new BigDecimal("100")).longValue()+""); // paramMap.put("refund_fee",paymentInfoQuery.getTotalAmount().multiply(new BigDecimal("100")).longValue()+""); paramMap.put("total_fee","1"); paramMap.put("refund_fee","1"); //设置接口和参数 HttpClient client = new HttpClient("https://api.mch.weixin.qq.com/secapi/pay/refund"); client.setXmlParam(WXPayUtil.generateSignedXml(paramMap,ConstantPropertiesUtils.PARTNERKEY)); client.setHttps(true); client.setCert(true);//退款证书 client.setCertPassword(ConstantPropertiesUtils.PARTNER);//证书密码 商户key //发送post请求 client.post(); //4、返回退款数据 String xml = client.getContent(); Map<String, String> resultMap = WXPayUtil.xmlToMap(xml); } catch (Exception e) { e.printStackTrace(); } return null; }
总结
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