Tomcat 7 javax.el.ELException

Question

I restarted the httpd and tomcat service today, and after doing so. I was greeted with the following message.

I saw this thread http://www.coderanch.com/t/592922/Tomcat/enable-el-api-jar-ver

And did as they told. I checked, and the el-api.jar is there. I checked another server, and tomcat is running great with it as well.

The server is a Centos 6.4 (final) and Tomcat 7.0.23.

I tried everything, even replacing the jar files, but nothing seems to work.

type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

org.apache.jasper.JasperException: javax.el.ELException: Provider com.sun.el.ExpressionFactoryImpl not found
    org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:585)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:396)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
root cause

javax.el.ELException: Provider com.sun.el.ExpressionFactoryImpl not found
    javax.el.FactoryFinder.newInstance(FactoryFinder.java:101)
    javax.el.FactoryFinder.find(FactoryFinder.java:197)
    javax.el.ExpressionFactory.newInstance(ExpressionFactory.java:189)
    javax.el.ExpressionFactory.newInstance(ExpressionFactory.java:160)
    org.apache.jasper.runtime.JspApplicationContextImpl.getExpressionFactory(JspApplicationContextImpl.java:108)
    org.apache.jsp.index_jsp._jspInit(index_jsp.java:31)
    org.apache.jasper.runtime.HttpJspBase.init(HttpJspBase.java:49)
    org.apache.jasper.servlet.JspServletWrapper.getServlet(JspServletWrapper.java:180)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:369)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
root cause

java.lang.ClassNotFoundException: com.sun.el.ExpressionFactoryImpl
    org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1688)
    org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1533)
    javax.el.FactoryFinder.newInstance(FactoryFinder.java:87)
    javax.el.FactoryFinder.find(FactoryFinder.java:197)
    javax.el.ExpressionFactory.newInstance(ExpressionFactory.java:189)
    javax.el.ExpressionFactory.newInstance(ExpressionFactory.java:160)
    org.apache.jasper.runtime.JspApplicationContextImpl.getExpressionFactory(JspApplicationContextImpl.java:108)
    org.apache.jsp.index_jsp._jspInit(index_jsp.java:31)
    org.apache.jasper.runtime.HttpJspBase.init(HttpJspBase.java:49)
    org.apache.jasper.servlet.JspServletWrapper.getServlet(JspServletWrapper.java:180)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:369)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
note The full stack trace of the root cause is available in the Apache Tomcat/7.0.23 logs.

Solution

Please, make sure you have both these jars at ${TOMCAT_HOME}/lib

el-api-2.2.jar // jar version could differ
el-impl-2.2.jar