1、优化Netty-TCP通信；

user-service/src/main/java/com/mh/user/netty/handle/ExceptionServerHandler.java

@@ -39,7 +39,17 @@ public class ExceptionServerHandler extends ChannelInboundHandlerAdapter {
         //if (meterNum != null) {
         //    meterInfoService.insertTestDetail(meterNum,"offline");
         //}
-        ServerSession.closeSession(ctx);
+        ServerSession.closeSession(ctx);// 添加到日志表，下线了
+        SysLog sysLog = new SysLog();
+        sysLog.setOperation(ctx.channel().remoteAddress().toString() + "下线了");
+        sysLog.setCreateBy("开发者");
+        sysLog.setIp(ctx.channel().remoteAddress().toString());
+        sysLog.setCreateTime(new Date());
+        sysLog.setTime(0L);
+        sysLogService.insertLog(sysLog);
+        // 更新网关在线情况
+        gatewayManageService.updateGatewayManageOnlineByHeartBeatCode(ctx.channel().remoteAddress().toString().substring(0, 8), 1);
+        ctx.close();
     }
 
     @Override