How to use Jakarta Standard Tag Library API (How To use Jakarta Standard Tag Library API in Java Class Libraries

How to use Jakarta Standard Tag Library API in the Java library Introduction: Jakarta Standard Tag Library (JSTL) is an extended label library for the Java Servlet application. It provides a set of labels and functions to simplify and enhance data presentation and process control on the JSP pages.This article will introduce how to use the JSTL API in the Java library and provide examples of Java code. Step 1: Import the jstl library First, you need to guide the JSTL library into your Java class library project.You can download the latest version of the JSTL library file from the JSTL official website (https://eclipse-ee4j.github.io/jstl-api/), or add the following dependencies by constructing tools (such as Maven or Gradle): <dependency> <groupId>javax.servlet</groupId> <artifactId>jstl</artifactId> <version>1.2</version> </dependency> Step 2: Create a Java class library Create a Java class library project and add the required Java class and methods. public class JstlExample { // Your code here } Step 3: Use the JSTL API in the Java class Use the JSTL API in the Java class, you need to import the required JSTL classes and methods, and call them at appropriate positions.Here are some common examples: 1. Use the label library URI to import the required JSTL class. import javax.servlet.jsp.jstl.core.Config; import javax.servlet.jsp.jstl.fmt.LocalizationContext; import javax.servlet.jsp.jstl.sql.Result; import javax.servlet.jsp.jstl.sql.ResultSupport; // Import other JSTL classes required 2. Use JSTL tags and functions in the method of the class. public String formatDate(Date date) { // Use <C: OUT> Tags to format the date into a specified format return "<c:out value=\"" + date + "\" formatPattern=\"yyyy-MM-dd\"/>"; } 3. Configure the JSTL tag library. public void configureJstl() { // Set the jstl configuration property Config.set(request, Config.FMT_LOCALE, "zh_CN"); Config.set(request, Config.FMT_LOCALIZATION_CONTEXT, new LocalizationContext(request, getServletContext())); } Note: The above examples are for reference only. You can make appropriate adjustments and modifications according to your needs and specific conditions. in conclusion: This article introduces the steps to use Jakarta Standard Tag Library (JSTL) API in the Java library.You need to import the JSTL library and use the required JSTL classes and methods in the Java class.Provide some common examples to help you understand how to use the JSTL API in the Java class library.Hope this article will help you!