Tomcat 7 javax.el.E​​LException

Question

我今天重新启动了httpd和tomcat服务,之后就这样做了.我收到了以下消息.

我看到了这个帖子http://www.coderanch.com/t/592922/Tomcat/enable-el-api-jarver

并按照他们的说法做了.我查了一下,el-api.jar就在那里.我检查了另一台服务器,tomcat也运行得很好.

服务器是Centos 6.4(最终版)和Tomcat 7.0.23版.

我尝试了一切,甚至更换了jar文件,但似乎没有任何效果.

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.

Answer 1

请确保你有这两个罐子 ${TOMCAT_HOME}/lib

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