I'm developing a webapp using tiles and spring mvc. With the use of xsd and dtd validation on the definition of tiles and bean declaration of spring mvc, each time the web app is start/restart, then requests are sent to external server for xsd and dtd files. I notice that because my webapp failed to start casually due to failed request to external server (!!!). I wonder if there is a way to tell my app to stop doing that? Like place a cached version of these files somewhere, or tell the Xml Processor to not valid these xml files at run time?