fix bug:java.lang.ClassCastException

miniapp/src/main/java/com/kym/miniapp/controller/PaymentController.java

@@ -69,7 +69,6 @@ public class PaymentController {
 
     @ApiLog(value = "微信退款回调", ignoreParams = true)
     @PostMapping("/refundNotify")
-    @ResponseBody
     String refundNotify(HttpServletRequest request, HttpServletResponse response) {
         response.setContentType("text/xml");
         Map<String, String> result = new HashMap<>();

service/src/main/java/com/kym/service/wechat/WxPayService.java

@@ -25,5 +25,5 @@ public interface WxPayService {
 
     PrepayWithRequestPaymentResponse wxPay(JSONObject rechargeAmount);
 
-   void  wxNotify(HttpServletRequest request) throws IOException;
+    void wxNotify(HttpServletRequest request) throws IOException;
 }