diff --git a/das/src/main/java/com/das/modules/node/command/HeartbeatCommand.java b/das/src/main/java/com/das/modules/node/command/HeartbeatCommand.java
index aad67993..53801235 100644
--- a/das/src/main/java/com/das/modules/node/command/HeartbeatCommand.java
+++ b/das/src/main/java/com/das/modules/node/command/HeartbeatCommand.java
@@ -2,7 +2,6 @@ package com.das.modules.node.command;
 
 import com.das.common.constant.EquipmentTypeIds;
 import com.das.common.utils.AdminRedisTemplate;
-import com.das.common.utils.StringUtils;
 import com.das.modules.cache.domain.DeviceInfoCache;
 import com.das.modules.cache.service.CacheService;
 import com.das.modules.node.constant.NodeConstant;
@@ -12,8 +11,6 @@ import lombok.extern.slf4j.Slf4j;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 
-import java.text.MessageFormat;
-
 @Slf4j
 @Service(value = NodeConstant.HEARTBEAT)
 public class HeartbeatCommand implements BaseCommand{