Question

I read everytime Filters are like servlets. Resin is a servlet container. Is there exist any filter container to initialize filters or does it take the role in servlet container only. Can anybody elaborate how it works?

Answer 1

• Servlets are components that handle an HTTP request/response cycle
• Filters are components that intercept HTTP requests and response before/after they reach the target servlet
• Servlet containers make sure the two points above work – i.e. they instantiate servlets and filters and “give” them the requests/responses