log4j配置报org.apache.log4j.xml.DOMConfigurator

错误：java.lang.ClassNotFoundException: org.apache.log4j.xml.DOMConfigurator
版本：log4j-core-2.3.jar
web.xml配置：

    <context-param>  
        <param-name>log4jConfigLocation</param-name>   
        <param-value>classpath:log4j.xml</param-value>   
    </context-param>  
    <context-param>   
        <param-name>log4jRefreshInterval</param-name>   
        <param-value>60000</param-value>   
    </context-param>  
    </listener>

        <listener>   
        <listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>   
    </listener>   

log4j.xml

 <?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">
<log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/"
    debug="true">
    <appender name="INFO"
        class="org.apache.log4j.DailyRollingFileAppender">
        <param name="File" value="${user.home}/logs/app-info.log" />
        <param name="Append" value="true" />
        <layout class="org.apache.log4j.PatternLayout">
            <param name="ConversionPattern" value="[%t]%c %d{ISO8601}-- %p -- %m%n" />
        </layout>
        <filter class="org.apache.log4j.varia.LevelRangeFilter">
            <param name="LevelMin" value="INFO" />
            <param name="LevelMax" value="INFO" />
        </filter>
    </appender>
    <logger name="cn.edu.ynu.demo">
        <level value="INFO" />
    </logger>
</log4j:configuration>

报错信息：

  Caused by: java.lang.ClassNotFoundException: org.apache.log4j.xml.DOMConfigurator
    at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1305)
    at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1139)
    ... 12 more

求大神看看问题在哪？

少了jar包 ClassNotFoundException: org.apache.log4j.xml.DOMConfigurator