By using URL/From jsp we are sending request
This request will come to web.xml file and execute DispatcherServlet
It is the responsibility of DispatcherServlet to identify perticular HandlerMappings
By using HandlerMapping DispathcerServlet will search for requested url path matching in spring configuration file/Spring Configuration class
If it is available,DispatcherServlet will call methods in our Controller
Controller process the request,get the data form form,store into pojo class/javabean,if required perform validations
And then Controller returns ModelAndView object with data/errors and jsp name
DispatcherServlet take the ModleAndView object and stored in scoped variables
Based on the jsp name returned by Controller,DispatcherServlet will find out jsp by using ViewResolver(InternalResourceViewResolver)
Finally loginpage/successpage/failure page send to clietnt/jsp/other
By using scoped variables we can display the data/errors
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