处理空值

ai-analytic-center-biz/src/main/java/com/volvo/ai/analytic/center/service/impl/ClaimVerificationServiceImpl.java

@@ -315,7 +315,7 @@ public class ClaimVerificationServiceImpl implements ClaimVerificationService {
 
     private String getPartHoursList(JSONObject warrantyJson) {
         if (warrantyJson == null || !warrantyJson.containsKey("warrantyReport")) {
-            return null;
+            return " ";
         }
         
         // 获取warrantyReport对象
@@ -323,11 +323,11 @@ public class ClaimVerificationServiceImpl implements ClaimVerificationService {
         
         // 检查partItems是否存在且是数组
         if (!warrantyReport.containsKey("partItems")) {
-            return null;
+            return " ";
         } else {
             Object value = warrantyReport.get("partItems");
             if (!(value instanceof JSONArray)) {
-                return null;
+                return " ";
             }
         }
         
@@ -345,11 +345,11 @@ public class ClaimVerificationServiceImpl implements ClaimVerificationService {
             }
         }
         if (partNoList.isEmpty()) {
-            return null;
+            return " ";
         }
         List<ClaimVerificationPartHoursDTO> result = tmClaimVerificationPartHoursMappingMapper.queryConfigByPartId(partNoList);
         if (result.isEmpty()) {
-            return null;
+            return " ";
         }
         return JSONObject.toJSONString(result);
     }