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java-design-patterns/front-controller/index.md
Markus 5ce932ceb7 Work on #213 
- 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
2015-08-20 21:40:07 +02:00

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pattern Front Controller front-controller /patterns/front-controller/ Presentation Tier 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.

alt text

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: