what different between InternalResourceViewResolver vs UrlBasedViewResolver

Question

I just started using Spring. I came across a lot tutorials. I saw more examples using InternalResourceViewResolver than UrlBasedViewResolver. I looked

Answer 1

InternalResourceViewResolver is infact subclass of UrlBasedViewResolver .

UrlBasedViewResolver - View name is directly resolved to an URL. No explicit mapping is provided. View name would be the URL itself or you can add a prefix or suffix as per your design. You can also prefix as "redirect:" and "forward:" to redirect and forward your request.

InternalResourceViewResolver - Subclass of UrlBasedViewResolver that supports InternalResourceView. An InternalResourceView wraps JSP or some other resource of the same web app. You can access models in the JSP using EL.

NOTE : Some URLBasedViewResolvers (Tiles, Velocity,Freemarker) check if resource exist and return null. So they can be anywhere in the view resolver chain. Others must be last (JSTL/JSP, XSLT, JSON)

So InternalResourceViewResolver needs to be last in the chain of view resolvers since it resolves view name whether the actual resource is present or not.

Some other URLBasedViewReolver s are

1. InternalResourceViewResolver
2. VelocityViewReolver
3. FreeMarkerViewReolver
4. ThymeleafViewResolver
5. XsltViewReolver