The Struts Taglib component provides a set of JSP custom tag libraries that help developers create interactive form-based applications. There are tags to help with everything from displaying error messages to dealing with nested ActionForm beans.
Struts Taglib is composed of four distinct tag libraries: Bean, HTML, Logic, and Nested.
| Bean | The bean tags are useful in defining new beans (in any scope) from a variety of possible sources, as well as a tag to render a particular bean (or bean property) to the output response. |
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| HTML | The HTML tags are used to create input forms, as well as other tags generally useful in the creation of HTML-based user interfaces. The output is HTML 4.01 compliant or XHTML 1.0 when in XHTML mode. |
| Logic | The Logic tags that are useful in managing conditional generation of output text, looping over object collections for repetitive generation of output text, and application flow management |
| Nested | The Nested tags extend the base Struts tags to allow them to relate to each other in a nested nature. The fundamental logic of the original tags doesn't change, except in that all references to beans and bean properties will be managed in a nested context. |
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