fix

 package com.infoloop.tianting.service.client;
 
+import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.DeserializationFeature;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import com.fasterxml.jackson.databind.PropertyNamingStrategy;
 import com.fasterxml.jackson.dataformat.xml.XmlMapper;
@@ -35,8 +37,6 @@ public class PayServiceClient {
 
     private final BusinessConfig businessConfig;
 
-    private final ObjectMapper objectMapper;
-
     @Value("${payment.client-id:Order0001}")
     private String clientId;
 
@@ -48,6 +48,9 @@ public class PayServiceClient {
         ThirdPartyPayInformRequestDto jsonData = buildRequestData(payRequestDto, requestDate);
         String jsonDataString;
         try {
+            ObjectMapper objectMapper = new ObjectMapper();
+            objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
+            objectMapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
             objectMapper.setPropertyNamingStrategy(PropertyNamingStrategy.UPPER_CAMEL_CASE);
             jsonDataString = objectMapper.writeValueAsString(jsonData);
         } catch (JsonProcessingException e) {