aa

business/jxstore/event/event_tcp.go

@@ -175,6 +175,7 @@ func HandleTcpMessages() {
 				dao.UpdateEntity(db, printMsg, "Status", "Comment")
 				delete(tcpClient.Clients, printMsg.PrintNo)
 			} else {
+				if c != nil {
 					if _, err = c.Write(data); err != nil {
 						globals.SugarLogger.Debugf("handleTcpMessages err [%v]", err)
 						c.Close()
@@ -184,6 +185,7 @@ func HandleTcpMessages() {
 			}
 		}
 	}
+}
 
 func changePrinterStatus(printNo string, status int) (err error) {
 	var (