1、在Maven项目的pom.xml的<dependencies></dependencies>标签中加入以下内容:

	<!-- https://mvnrepository.com/artifact/javax.servlet/jstl -->
	<dependency>
	    <groupId>javax.servlet</groupId>
	    <artifactId>jstl</artifactId>
	    <version>1.2</version>
	</dependency>
	<!-- https://mvnrepository.com/artifact/taglibs/standard -->
	<dependency>
	    <groupId>taglibs</groupId>
	    <artifactId>standard</artifactId>
	    <version>1.1.2</version>
	</dependency>
	<!-- https://mvnrepository.com/artifact/org.apache.taglibs/taglibs-standard-impl -->
	<dependency>
	    <groupId>org.apache.taglibs</groupId>
	    <artifactId>taglibs-standard-impl</artifactId>
	    <version>1.2.5</version>
	</dependency>

2、在jsp头部加上jstl的引入标签:

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>

3、说明:jstl包为必须,standard和taglibs-standard-impl包二选一。

      当然两个一起写进去也没问题,jsp默认选择用第一个standard jar包