spring's dispatcher servlet delegates to a ViewResolver to map returned view names to view implementations. by default, view names are treated as web application relative file paths, but this can be overridden by registering a ViewResolver bean within the application context.
by using the following code, view names will be prefixed with '/WEB-INF/views' and suffixed with '.jsp':
this means if a ModelAndView is returned from a Controller with a view name 'summary', the resource '/WEB-INF/views/summary.jsp' will be returned.
<property name="prefix" value="/WEB-INF/views"/>
<property name="suffix" value=".jsp"/>