In addition to, we can use implicit objects, predefined tags, expression language and custom tags in jsp, that makes jsp development easy. In this tutorial, we will learn how to create a simple jsp custom tag and how to use it in jsp. Jstl stands for java server pages standard tag library, and it is a collection of custom jsp tag libraries that provide common web development. Jsp custom tags in this chapter, we will discuss the custom tags in jsp. Jsp technology also provides a mechanism for encapsulating other types of dynamic functionality in custom tags, which are extensions to the jsp language. Tag library descriptor file must have the extension. Always try to create and use your own custom tags from frequently used operations in your jsp application. The complete reference phil hanna osbornemcgrawhill new york chicago san francisco lisbon london madrid mexico city milan new delhi san juan seoul singapore sydney toronto. To wrap up, she goes over the jsp standard tag library jstl core module and fmt module, and also discusses the development of custom tags. Jsp can be easily managed because we can easily separate our business logic with. She also covers session management, filters, and listeners.
Some examples of tasks that can be performed by custom tags include operating on implicit objects. In this chapter, we will discuss the custom tags in jsp. In earlier chapters we discussed jstl libraries provided by jsp specifications. Java project tutorial make login and register form step by step using netbeans and mysql database duration.
When a jsp page containing a custom tag is translated into a servlet, the tag is converted to operations on an object called a tag handler. This is the first step in creating custom tags in jsp. Similarly we can create jsp custom tag libraries as well. Jsp technology is the extension to servlet technology. In this tutorial we will see how to access the body of custom tag. In this tutorial, you will learn what is jstl jstl core jsp custom tags what is. Use custom api and creating custom tag with attributes educaterz.
Lets move to the next lesson and study how to create a custom tag. In the custom tag, how can i get the text of what the body is. The standard jsp tags simplify jsp page development and maintenance. Tlds are used by the web container to validate the tags and also by jsp page development tools. In the last tutorial we learnt how to create and use custom tags in jsp. Jsp technology also provides a mechanism for encapsulating other types of dynamic. Simpletagsupport class and override dotag method the important point to note is that we should have setter methods for the attributes we need for the tag. Use custom api and creating custom tag with attributes. Fortunately, jsp is extendable and we can create our own custom tags to perform. A custom tag is a userdefined jsp language element.