Exception handling in web application is indeed a tricky task and it varies according to scenarios. There are no fix rules but yes I will give you a generic idea about better way of exception handling. Generally well structured application has four layers: Presentation Layer (JSP/HTML), Business Logic Layer (POJO containing business logic) and Database Access Layer (POJO to interact with Databse) and Data Layer(Database itself). First I will enlist all possible exception handling strategies and then describe suitable strategy for each layer. (more…)

MultiActionController is one of the types of Controllers in Spring. It extends AbstractController. (Somewhat similar to DispatchAction in Struts)  Why MultiActionController?: It aggregates multiple request handling methods into single controller, so related functionality can be kept together easily.
NOTE:To reduce complexity, I have added business logic in Controller. Later on I will republish this example as per MVC2 standards. Let’s go through the flow of application.

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