用户支付取消 才调取消支付接口

src/pages/wxPay/index.vue

@@ -107,9 +107,11 @@ export default {
             payData.fail = res => {
               console.log("支付失败", res, this.options.orderSn);
               this.message = "支付失败";
+              if (res.errMsg='requestPayment:fail cancel') {
                 wxPay.cancelPayment(this.options.orderSn).then(() => {
                   console.log("取消成功");
                 });
+              }
               this.toPage();
             };
             payData.complete = res => {