求教一个el的问题

Question

本人的工程原环境服务器是tomcat6.0  项目是用struts2+hibernate做的，在我的myeclipse下的tomcat6.0的服务器下运行正常。可是把我的工程部署到tomcat5.5下 打开我的主页面出现以下异常：javax.servlet.ServletException: javax/el/ValueExpression
org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:515)
org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:422)
root cause javax.servlet.ServletException: javax/el/ValueExpression
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:273)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
org.apache.struts2.dispatcher.ServletDispatcherResult.doExecute(ServletDispatcherResult.java:139)
org.apache.struts2.dispatcher.StrutsResultSupport.execute(StrutsResultSupport.java:178)
com.opensymphony.xwork2.DefaultActionInvocation.executeResult(DefaultActionInvocation.java:348)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:253)
com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:221)
com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:86)
com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:224)
com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:223)
com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:221)
com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:150)
org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept
         
root cause java.lang.NoClassDefFoundError: javax/el/ValueExpression
java.lang.Class.getDeclaredMethods0(Native Method)
java.lang.Class.privateGetDeclaredMethods(Unknown Source)
java.lang.Class.getDeclaredMethods(Unknown Source)
java.beans.Introspector$1.run(Unknown Source)
java.security.AccessController.doPrivileged(Native Method)
java.beans.Introspector.getPublicDeclaredMethods(Unknown Source)
java.beans.Introspector.getTargetMethodInfo(Unknown Source)
java.beans.Introspector.getBeanInfo(Unknown Source)
java.beans.Introspector.getBeanInfo(Unknown Source)
java.beans.Introspector.getBeanInfo(Unknown Source)
java.beans.Introspector.<init>(Unknown Source)
java.beans.Introspector.getBeanInfo(Unknown Source)
java.beans.Introspector.getBeanInfo(Unknown Source)
java.beans.Introspector.<init>(Unknown Source)
java.beans.Introspector.getBeanInfo(Unknown Source)
org.apache.jasper.compiler.Generator$TagHandlerInfo.<init>(Generator.java:3734)
org.apache.jasper.compiler.Generator$GenerateVisitor.getTagHandlerInfo(Generator.java:2146)
org.apache.jasper.compiler.Generator$GenerateVisitor.visit(Generator.java:1614)
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:3326)
org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:220)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:317)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:298)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:286)
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.apache.struts2.dispatcher.ServletDispatcherResult.doExecute(ServletDispatcherResult.java:139)
org.apache.struts2.dispatcher.StrutsResultSupport.execute(StrutsResultSupport.java:178)
com.opensymphony.xwork2.DefaultActionInvocation.executeResult(DefaultActionInvocation.java:348)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:253)
com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept
         。
这是什么问题呢？？请教

Answer 1

你是不是用了JSTL里面的东西，如果用了你的jstl的版本是1.2还是1.1，1.0的，这个问题我以前遇到过，jstl的环境有些问题，用jstl1.1就没这个问题

Answer 2

1.查一下你的tomcat版本配合的Servlet版本
2.检查需要的jar包
3.检查 tag librery 的引入
4.检查语句

Answer 3

对 回2楼 我是用到了jstl里的东西  是这个问题吗？？我要去试下~~回三楼 我是直接将部署在tomcat6.0的工程复制到tomcat5.5的发布目录的~~~在tomcat6.0运行正常我估计可能就是那个jstl版本的问题吧~我要换一个版本试下~

Answer 4

楼主，可能是jstl的版本问题，建议应jstl 1.1