HTTP Status 500 平凡出现

bean426

HTTP  Status 500 - 经常出现，该如何解决？

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type Exception report

message

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

exception

javax.servlet.ServletException: org.apache.struts.taglib.bean.WriteTag
        org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:867)
        org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:800)
        org.apache.jsp.jsp.workplace.main_005fnew_jsp._jspService(main_005fnew_jsp.java:1042)
        org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:133)
        javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
        org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:311)
        org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:301)
        org.apache.jasper.servlet.JspServlet.service(JspServlet.java:248)
        javax.servlet.http.HttpServlet.service(HttpServlet.java:856)


root cause

java.lang.NoClassDefFoundError: org.apache.struts.taglib.bean.WriteTag
        org.apache.jsp.jsp.workplace.main_005fnew_jsp.class$(main_005fnew_jsp.java:328)
        org.apache.jsp.jsp.workplace.main_005fnew_jsp._jspx_meth_bean_write_0(main_005fnew_jsp.java:1197)
        org.apache.jsp.jsp.workplace.main_005fnew_jsp._jspService(main_005fnew_jsp.java:388)
        org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:133)
        javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
        org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:311)
        org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:301)
        org.apache.jasper.servlet.JspServlet.service(JspServlet.java:248)
        javax.servlet.http.HttpServlet.service(HttpServlet.java:856)


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