JSP - JSTL Custom Tag Library - CodeProject.
JSTL is the standard tag library that provides tags to control the JSP page behavior. JSTL tags can be used for iteration and control statements, internationalization, SQL etc. We will look into JSTL Tags in detail in this JSTL tutorial. Earlier we saw how we can use JSP EL and JSP Action Tags to write JSP code like HTML but their functionality.
Tags with a body: Refer to the custom tag within which you can define nested custom tags, scripting elements, actions, HTML text, and JSP directives. The following code snippet shows a custom tag that contains a JSP scripting element as its body.
JSP page are built from tags and other than the existing tags in the standard tag library we can create custom tag. A custom tag is a user-defined JSP language element. We use the Simple Tag Handlers to write the custom tags. To create a customer tag, extend SimpleTagSupport class and override the doTag() method. Inside the doTag() method, we.
Here m is the prefix, cube is the tag name and number is the attribute. Simple example of attribute in JSP Custom Tag. In this example, we are going to use the cube tag which return the cube of any given number. Here, we are defining the number attribute for the cube tag. We are using the three file here: index.jsp; CubeNumber.java; mytags.tld.
JSP Standard Tag Library(JSTL) is a standard library of custom tags. The JSTL contain several tag that can reduce the scripting necessary in a JSP page.
The sample JSP program below, shows a JSP that displays the current date and time. The example JSP shows how to import and use a custom tag library,. The code also uses the jsp:useBean standard action, a built-in XML element that you can use to create a new Java object for use in the JSP page. Here are the basic steps for writing a JSP.
JavaServer Pages Standard Tag Library JSTL has support for common, structural tasks such as iteration and conditionals, tags for manipulating XML documents, internationalization tags, and SQL tags. It also provides a framework for integrating existing custom tags with JSTL tags.