java.lang.NoClassDefFoundError: javax/el/ValueExpression

写于2011-08-08 17:17

浏览器下打开页面，出现如下错误信息：

type Exception report

message

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

exception

javax.servlet.ServletException: javax/el/ValueExpression
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:273)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:238)
org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:250)
org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1120)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:890)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:792)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:851)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:756)
javax.servlet.http.HttpServlet.service(HttpServlet.java:627)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

root cause

java.lang.NoClassDefFoundError: javax/el/ValueExpression
java.lang.Class.getDeclaredMethods0(Native Method)
java.lang.Class.privateGetDeclaredMethods(Class.java:2427)
java.lang.Class.privateGetPublicMethods(Class.java:2547)
java.lang.Class.getMethods(Class.java:1410)
java.beans.Introspector.getPublicDeclaredMethods(Introspector.java:1280)
java.beans.Introspector.getTargetMethodInfo(Introspector.java:1154)
java.beans.Introspector.getBeanInfo(Introspector.java:405)
java.beans.Introspector.getBeanInfo(Introspector.java:164)
java.beans.Introspector.getBeanInfo(Introspector.java:227)
java.beans.Introspector.<init>(Introspector.java:386)
java.beans.Introspector.getBeanInfo(Introspector.java:164)
java.beans.Introspector.getBeanInfo(Introspector.java:227)
java.beans.Introspector.<init>(Introspector.java:386)
java.beans.Introspector.getBeanInfo(Introspector.java:164)
org.apache.jasper.compiler.Generator$TagHandlerInfo.<init>(Generator.java:3732)
org.apache.jasper.compiler.Generator$GenerateVisitor.getTagHandlerInfo(Generator.java:2135)
org.apache.jasper.compiler.Generator$GenerateVisitor.visit(Generator.java:1603)
org.apache.jasper.compiler.Node$CustomTag.accept(Node.java:1442)
org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2166)
org.apache.jasper.compiler.Node$Visitor.visitBody(Node.java:2216)
org.apache.jasper.compiler.Node$Visitor.visit(Node.java:2222)
org.apache.jasper.compiler.Node$Root.accept(Node.java:457)
org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2166)
org.apache.jasper.compiler.Generator.generate(Generator.java:3324)
org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:199)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:296)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:277)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:265)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:564)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:302)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:329)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:238)
org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:250)
org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1120)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:890)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:792)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:851)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:756)
javax.servlet.http.HttpServlet.service(HttpServlet.java:627)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

root cause

java.lang.ClassNotFoundException: javax.el.ValueExpression
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1386)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1232)
java.lang.Class.getDeclaredMethods0(Native Method)
java.lang.Class.privateGetDeclaredMethods(Class.java:2427)
java.lang.Class.privateGetPublicMethods(Class.java:2547)
java.lang.Class.getMethods(Class.java:1410)
java.beans.Introspector.getPublicDeclaredMethods(Introspector.java:1280)
java.beans.Introspector.getTargetMethodInfo(Introspector.java:1154)
java.beans.Introspector.getBeanInfo(Introspector.java:405)
java.beans.Introspector.getBeanInfo(Introspector.java:164)
java.beans.Introspector.getBeanInfo(Introspector.java:227)
java.beans.Introspector.<init>(Introspector.java:386)
java.beans.Introspector.getBeanInfo(Introspector.java:164)
java.beans.Introspector.getBeanInfo(Introspector.java:227)
java.beans.Introspector.<init>(Introspector.java:386)
java.beans.Introspector.getBeanInfo(Introspector.java:164)
org.apache.jasper.compiler.Generator$TagHandlerInfo.<init>(Generator.java:3732)
org.apache.jasper.compiler.Generator$GenerateVisitor.getTagHandlerInfo(Generator.java:2135)
org.apache.jasper.compiler.Generator$GenerateVisitor.visit(Generator.java:1603)
org.apache.jasper.compiler.Node$CustomTag.accept(Node.java:1442)
org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2166)
org.apache.jasper.compiler.Node$Visitor.visitBody(Node.java:2216)
org.apache.jasper.compiler.Node$Visitor.visit(Node.java:2222)
org.apache.jasper.compiler.Node$Root.accept(Node.java:457)
org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2166)
org.apache.jasper.compiler.Generator.generate(Generator.java:3324)
org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:199)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:296)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:277)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:265)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:564)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:302)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:329)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:238)
org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:250)
org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1120)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:890)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:792)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:851)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:756)
javax.servlet.http.HttpServlet.service(HttpServlet.java:627)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

note The full stack trace of the root cause is available in the Apache Tomcat/5.5.27 logs.

 

服务器tomcat5.5，我将项目改用tomcat6之后，页面访问正常。

 

上 面转帖的那篇帖子里说道，tomcat5和tomcat6对jsp和servlet的实现版本不同，而且taglib的 uri也是不同的，大家可以到tomcat的lib库里看一下，tomcat5和tomcat6自带的lib包有很多是不同的，其中就包括el.jar这 个，估计就是缺少这个包造成的。