tomcat 6.0 配置虚拟路径 报错

Question

HTTP Status 500 - --------------------------------------------------------------------------------type Exception reportmessage description The server encountered an internal error () that prevented it from fulfilling this request.exception org.apache.jasper.JasperException: javax.servlet.ServletException: java.lang.NoClassDefFoundError: org/apache/taglibs/standard/tag/rt/core/IfTag
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:522)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:398)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
root cause javax.servlet.ServletException: java.lang.NoClassDefFoundError: org/apache/taglibs/standard/tag/rt/core/IfTag
org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:852)
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:781)
org.apache.jsp.index_jsp._jspService(index_jsp.java:357)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:374)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
root cause java.lang.NoClassDefFoundError: org/apache/taglibs/standard/tag/rt/core/IfTag
org.apache.jsp.index_jsp._jspx_meth_c_005fif_005f0(index_jsp.java:369)
org.apache.jsp.index_jsp._jspService(index_jsp.java:136)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:374)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
note The full stack trace of the root cause is available in the Apache Tomcat/6.0.18 logs.
--------------------------------------------------------------------------------Apache Tomcat/6.0.18index.jsp
为什么会老报错这些呢？没有配置虚拟路径的时候都可以访问的

Answer 1

报这个错的意思是JSTL jar包找不到。
你确认两个相关的jar包都在你WEB-INF/lib目录下了吗？

Answer 2

缺少jar包引用，通常web工程中引用非标准包时，要放入webcontent目录下的lib目录下，tomcat自动到它下面找所需包

Answer 3

你的虚拟路径是如何配置的？
有可能是因为你的虚拟路径指向不对，所以导致相关的JAR找不到了

Answer 4

copy错包了当时 ，总之 thanks