diff --git a/src/main/java/org/energy/modules/smart/entity/WorkOrder.java b/src/main/java/org/energy/modules/smart/entity/WorkOrder.java
index 93e9b31..90c20f8 100644
--- a/src/main/java/org/energy/modules/smart/entity/WorkOrder.java
+++ b/src/main/java/org/energy/modules/smart/entity/WorkOrder.java
@@ -116,8 +116,9 @@ public class WorkOrder extends BaseEntity {
     /**
      * 处理结果
      */
+	@JsonSerialize(nullsUsing = NullSerializer.class)
     @ApiModelProperty(value = "处理结果")
-    private String handlingResult;
+    private Integer handlingResult;
     /**
      * 审核状态
      */