I want to use Spring-Tiles intergration. Here you can see how my app looks like.
So my question is: why Spring-MVC dispatcher Servlet can not resolve my Target page
I think you're missing a critical ViewResolver. I checked the post you mentioned in SpringSource but I didn't see the following ViewResolver:
org.springframework.web.servlet.view.tiles2.TilesViewResolver
Try adding that ViewResolver and see if that would help. I use Spring and Tiles as well. I just have to declare that and the TilesConfigurer.
Check out these references:
Add TilesViewResolver to enable fallback if tiles definition does not exist
TilesViewResolver