任务提交 修正发送mqtt消息

ruoyi-system/src/main/java/com/ruoyi/system/service/impl/SiteServiceImpl.java

@@ -19,8 +19,7 @@ import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 import javax.annotation.Resource;
 import java.util.Date;
-import com.alibaba.fastjson.serializer.SerializeConfig;
-import com.alibaba.fastjson.serializer.SerializerFeature;
+
 
 
 /**