部署好jeesite 访问报jstl 问题?报错

报错信息

rg.apache.jasper.JasperException: /WEB-INF/views/modules/sys/sysLogin.jsp (line: 3, column: 0) The absolute uri: http://java.sun.com/jsp/jstl/core cannot be resolved in either web.xml or the jar files deployed with this application

at org.apache.jasper.compiler.Parser.processIncludeDirective(Parser.java:325)

以前以为是jstl 版本问题 

看了pom.xml 里面用的版本是1.2 

<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
<type>jar</type>
</dependency>

主页引用的是

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

web.xml 

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
version="2.5">

运行环境  jdk 1.8  tomcat 1.8 maven 3