diff --git a/src/main/java/org/mgc/server/SSCommandHandler.java b/src/main/java/org/mgc/server/SSCommandHandler.java
index 6b1cc75..2e8468f 100644
--- a/src/main/java/org/mgc/server/SSCommandHandler.java
+++ b/src/main/java/org/mgc/server/SSCommandHandler.java
@@ -12,12 +12,9 @@ import java.util.HashMap;
 import java.util.Map;
 import org.mgc.server.command.SupportDevice.CmdDevice;
 import org.mgc.utils.StringHelper;
-import org.springframework.stereotype.Component;
 
 @Slf4j
 public class SSCommandHandler {
-    private static final ObjectMapper objectMapper = new ObjectMapper();
-
     private final Map<String, CommandHandler> cmdHandlers = new HashMap<>();
 
     public SSCommandHandler() {
diff --git a/src/main/java/org/mgc/server/command/command_handler/TempControlDevice.java b/src/main/java/org/mgc/server/command/command_handler/TempControlDevice.java
index 92de35a..46762b1 100644
--- a/src/main/java/org/mgc/server/command/command_handler/TempControlDevice.java
+++ b/src/main/java/org/mgc/server/command/command_handler/TempControlDevice.java
@@ -40,7 +40,7 @@ public class TempControlDevice extends BaseCommandHandler {
     @Override
     public JsonResponse execute(Command command) {
         int cmdId = (int) command.getCmdId();
-        int res = 0;
+        int res;
 
         checkAction(command.getAction());