java Tomcat 7 javax.el.ELException
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Tomcat 7 javax.el.ELException
提问by Ted Pat
I restarted the httpd and tomcat service today, and after doing so. I was greeted with the following message.
我今天重启了 httpd 和 tomcat 服务，然后就重启了。我收到了以下消息。
I saw this thread http://www.coderanch.com/t/592922/Tomcat/enable-el-api-jar-ver
我看到这个线程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.
并按照他们说的做了。我查了一下，el-api.jar 在那里。我检查了另一台服务器，tomcat 也运行良好。
The server is a Centos 6.4 (final) and Tomcat 7.0.23.
服务器是 Centos 6.4（最终版）和 Tomcat 7.0.23。
I tried everything, even replacing the jar files, but nothing seems to work.
我尝试了一切，甚至替换了 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.
采纳答案by Ravi Thapliyal
Please, make sure you have both these jars at ${TOMCAT_HOME}/lib
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
