Expression Language

Expression Language (EL) - скриптовый язык выражений, который позволяет получить доступ к Java компонентам JavaBeans) из JSP. Начиная с JSP 2.0 используется внутри JSP тегов для отделения Java кода от JSP для обеспечения лёгкого доступа к Java компонентам.

Evolution of EL occurred to make scripting easier for web-content designers who have little or practically no knowledge of the core Java Language. This scripting language makes JSP a scripting language in the true sense. Before EL, JSP consisted of some special tags like scriptlets, expressions etc within which Java code was written explicitly. With EL the web-content designer needs only to know how to make proper calls to core Java methods and can enjoy the true scripting flavour of a scripting language.

См. также

• OGNL- An open source expression language used by WebWork (and Struts2).
• MVEL- Another open source EL used in many Java-based projects.

Внешние ссылки

• Java- Expression Language