添加utf-8解析设备信息

sql/mysql.sql

@@ -23,7 +23,8 @@ create table device
     updateTime    varchar(50)  not null,
     port          int          not null,
     expires       int          not null,
-    hostAddress   varchar(50)  not null
+    hostAddress   varchar(50)  not null,
+    charset       varchar(50)  not null
 );
 
 create table device_channel