Servlet

Concept and History of Servlet Filter Servlet Filter is a Java component first introduced in the Servlet 2.3 specification released in 2001. It intercepts HTTP requests before servlets process them and responses before they are sent to clients, enabling preprocessing and postprocessing operations. The introduction of this feature enabled developers to implement cross-cutting concerns such as authentication, logging, character encoding, and data compression in a reusable manner, separate from business logic. Filters are based on the Chain of Responsibility design pattern, allowing multiple filters to be connected in a chain and executed sequentially. ...