Are there any long distance buses from xuzhou to jinan and how long is the journey?

Yes, you can take it at General Bus Station.
The bus schedule is at 12:00.
The ticket fare is CNY 101 per person. It takes around 5 to 6 hours on the way.

BTW, there are both ordinary and bullet trains for the route. The departures are very dense. And duration for a bullet train is only about 1-1.5 hours; ticket fare for a second class seat is CNY 129.5.

Thank you☺