diff --git a/modules/i3plus-ext-mes-pcn-apiservice/src/main/java/cn/estsh/i3plus/ext/mes/pcn/apiservice/daoimpl/MesEquipmentLogDao.java b/modules/i3plus-ext-mes-pcn-apiservice/src/main/java/cn/estsh/i3plus/ext/mes/pcn/apiservice/daoimpl/MesEquipmentLogDao.java
index f065666..6e9dd2e 100644
--- a/modules/i3plus-ext-mes-pcn-apiservice/src/main/java/cn/estsh/i3plus/ext/mes/pcn/apiservice/daoimpl/MesEquipmentLogDao.java
+++ b/modules/i3plus-ext-mes-pcn-apiservice/src/main/java/cn/estsh/i3plus/ext/mes/pcn/apiservice/daoimpl/MesEquipmentLogDao.java
@@ -13,7 +13,6 @@ import org.springframework.util.StringUtils;
 
 import javax.persistence.EntityManager;
 import javax.persistence.Query;
-import java.math.BigInteger;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.stream.Collectors;