5ce932ceb7
- properly categorize all patterns - remove pattern list from readme - minor fixes to readme - removed "introduction" because its not a pattern and an error i committed some time ago
25 lines
824 B
Markdown
25 lines
824 B
Markdown
---
|
|
layout: pattern
|
|
title: Front Controller
|
|
folder: front-controller
|
|
permalink: /patterns/front-controller/
|
|
categories: Presentation Tier
|
|
tags: Java
|
|
---
|
|
|
|
**Intent:** Introduce a common handler for all requests for a web site. This
|
|
way we can encapsulate common functionality such as security,
|
|
internationalization, routing and logging in a single place.
|
|
|
|
|
|
|
|
**Applicability:** Use the Front Controller pattern when
|
|
|
|
* you want to encapsulate common request handling functionality in single place
|
|
* you want to implements dynamic request handling i.e. change routing without modifying code
|
|
* make web server configuration portable, you only need to register the handler web server specific way
|
|
|
|
**Real world examples:**
|
|
|
|
* [Apache Struts](https://struts.apache.org/)
|