为什么 JSTL 导致 IntelliJ 14 Ultimate、Tomcat 7、Spring 4.2.1、OSX El Capitan 出现问题？

Question

我已经摔跤好几天了。我有一个简单的教程项目，每当我将以下指令添加到我的简单 JSP 时，页面加载失败：

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

来自Tomcat

的错误

Oct 12, 2015 3:23:49 PM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet [offers] in context with path [] threw exception [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] with root cause
org.apache.jasper.JasperException: The absolute uri: http://java.sun.com/jsp/jstl/core cannot be resolved in either web.xml or thejar files deployed with this application

我的文件：

pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0
http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>

<groupId>andy</groupId>
<artifactId>pizza</artifactId>
<version>1.0-SNAPSHOT</version>

<dependencies>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-webmvc</artifactId>
        <version>4.2.1.RELEASE</version>
    </dependency>

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

</dependencies>

web.xml

    <?xml version="1.0" encoding="UTF-8"?>
    <web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/java
      http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"version="3.1">
<context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>/WEB-INF/applicationContext.xml</param-value>
    </context-param>
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    <servlet>
        <servlet-name>offers</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>offers</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>
    <description>Spring Database</description>
    <resource-ref>
        <description>DB Connection</description>
        <res-ref-name>jdbc/spring</res-ref-name>
        <res-type>javax.sql.DataSource</res-type>
        <res-auth>Container</res-auth>
    </resource-ref>

</web-app>

home.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<html>
  <head>
    <title></title>
  </head>
  <body>
      Hello sir!
  </body>
</html>

IntelliJ 中的项目结构

发送的页面：

如有任何帮助，我们将不胜感激！

Answer 1

我修改了web.xml:

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

成功了。

为什么 JSTL 导致 IntelliJ 14 Ultimate、Tomcat 7、Spring 4.2.1、OSX El Capitan 出现问题？

Why is JSTL causing problems with IntelliJ 14 Ultimate, Tomcat 7, Spring 4.2.1, OSX El Capitan?

spring

jsp

jstl

intellij-idea

maven