I developed web application using spring ,its just simple web application just navigation from one page to other page,first page is login page after sucess ,its goes to success page,so my application don't have database capability ,when i am uploading war file do i need to set any database set up,what is mean DataSource.groovy where it is ,do i need to change anything ,so where i get this file?

When I lunch application ,I am geting Page can't displayed.