diff --git a/src/main/java/org/energy/modules/spares/entity/Material.java b/src/main/java/org/energy/modules/spares/entity/Material.java
index efb1439..b3d7626 100644
--- a/src/main/java/org/energy/modules/spares/entity/Material.java
+++ b/src/main/java/org/energy/modules/spares/entity/Material.java
@@ -3,6 +3,9 @@ package org.energy.modules.spares.entity;
 import com.baomidou.mybatisplus.annotation.TableName;
 import com.dayu.daf.core.mp.base.BaseEntity;
 import java.io.Serializable;
+
+import com.fasterxml.jackson.databind.annotation.JsonSerialize;
+import com.fasterxml.jackson.databind.ser.std.ToStringSerializer;
 import lombok.Data;
 import lombok.EqualsAndHashCode;
 import io.swagger.annotations.ApiModel;
@@ -25,6 +28,7 @@ public class Material extends BaseEntity {
     /**
      * 主键
      */
+	@JsonSerialize(using = ToStringSerializer.class)
     @ApiModelProperty(value = "主键")
     private Long id;
     /**