JavaServer Pages (JSP) are a great mechanism for delivering dynamic Web-based content. JSP provides a set of predefined tags, but you can also define your own tag extensions that encapsulate common functionality.
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JavaServer Pages (JSP) are a great mechanism for delivering dynamic Web-based content. JSP provides a set of predefined tags, but you can also define your own tag extensions that encapsulate common functionality. This article will show how easy it is to build, deploy, and use your own custom JSP tag, using the Servlet/JSP reference implementation, Tomcat.
What are tag libraries?
Tag libraries, or taglibs, are a feature of JSP 1.1 that enables you to build libraries of reusable JSP tags. That means you can encapsulate common behavior in your own JSP tag and use it across the JSP pages in your Web apps. The ability to extract common functionality from a JSP page and easily reuse it in other pages and Web applications can be very powerful. But isn't that what JavaBeans were designed for?
JavaBeans are reusable software components. It's true that there are JSP tags that let you use JavaBeans within your pages. The only ability those tags allow you, however, is to bind named, scoped instances, and then get/set those instances' properties. If you need to call methods on your JavaBeans, you need to embed the appropriate Java code inside a scriptlet.
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INTRODUCTION TO JSP TAGS
I n this lesson we will learn about the various tags available in JSP with suitable examples. In JSP tags can be devided into 4 different types. These are:
Directives
In the
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