Using JSTL in JSP - Programmingempire

The following article demonstrates Using JSTL in JSP.

In order to use JSTL in a JSP, you need to follow these steps.

To begin with, add the JSTL library to your web application. You can download the JSTL library from the Apache Taglibs website or include it as a dependency in your build system. Once you have the JSTL library, you need to add it to your web application’s WEB-INF/lib directory.

After that, declare the JSTL namespace in your JSP page using the xmlns:c attribute. The xmlns:c attribute should be added to the <html> tag or any other parent tag. For example.

<%@ tagliburi=”http://java.sun.com/jsp/jstl/core” prefix=”c” %>

Use JSTL tags in your JSP page. JSTL tags have a prefix, which is defined in the prefix attribute of the taglib directive. For example, if the prefix is “c”, you can use JSTL tags by prefixing them with “c:”. For example, to use the <c:forEach> tag to iterate over a collection, you would write the following code.

<c:forEachvar="item" items="${collection}">
<p>${item}</p>
</c:forEach>

In this example, the var attribute specifies the name of the loop variable, the items attribute specifies the collection to iterate over, and the body of the tag contains the content to be displayed for each item in the collection.

Deploy and run your JSP page in a web container. The JSTL tags will be executed at runtime and the resulting output will be displayed in the browser.

By following these steps, you can use JSTL in a JSP page to simplify page development and improve code maintainability. JSTL tags provide a convenient way to perform common tasks such as iteration, conditionals, and formatting, and can help to reduce the amount of Java code in a JSP page.

Further Reading