It could happen if someone is accessing a template file without going
through the main JSP files. I get this a lot on jspwiki.org, and this
is usually due to hacking attempts or bots.
/Janne
On 22 Apr 2009, at 12:50, Weijian Fang wrote:
Sorry to ask again. But can someone explain this "Tag failed" error?
Or give some hints on it? Many thanks in advance!
Basically, WikiTagBase.m_wikiContext == null, how could it be?
<log4j:event logger="com.ecyrd.jspwiki.tags.WikiTagBase"
timestamp="1239931142106" level="ERROR" thread="TP-Processor14">
<log4j:message><![CDATA[Tag failed]]></log4j:message>
<log4j:NDC><![CDATA[OMII-UK:/wiki/PrivateWIKIADMINSystemInfo
OMII-UK:http://www.omii.ac.uk/wiki/PrivateWIKIADMINSystemInfo]]></
log4j:NDC>
<log4j:throwable><![CDATA[javax.servlet.jsp.JspException: WikiContext
may not be NULL - serious internal problem!
at
com.ecyrd.jspwiki.tags.WikiTagBase.doStartTag(WikiTagBase.java:86)
at
org
.apache
.jsp.Error_jsp._jspx_meth_wiki_005fMessages_005f0(Error_jsp.java:178)
at org.apache.jsp.Error_jsp._jspService(Error_jsp.java:125)
at
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:98)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at
org
.apache
.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:331)
at
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:
329)
at
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at
org
.apache
.catalina
.core
.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:
269)
at
org
.apache
.catalina
.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at
org
.apache
.catalina
.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:679)
at
org
.apache
.catalina
.core
.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:461)
at
org
.apache
.catalina
.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:399)
at
org
.apache
.catalina
.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
at
org
.apache
.jasper.runtime.PageContextImpl.doForward(PageContextImpl.java:686)
at
org
.apache.jasper.runtime.PageContextImpl.forward(PageContextImpl.java:
656)
at
org
.apache
.jasper
.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:
801)
at
org
.apache
.jasper
.runtime.PageContextImpl.handlePageException(PageContextImpl.java:774)
at org.apache.jsp.Wiki_jsp._jspService(Wiki_jsp.java:135)
at
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:98)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at
org
.apache
.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:331)
at
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:
329)
at
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at
org
.apache
.catalina
.core
.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:
269)
at
org
.apache
.catalina
.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at
org
.apache
.catalina
.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:679)
at
org
.apache
.catalina
.core
.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:461)
at
org
.apache
.catalina
.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:399)
at
org
.apache
.catalina
.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
at com.ecyrd.jspwiki.WikiServlet.doGet(WikiServlet.java:100)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at
org
.apache
.catalina
.core
.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:
269)
at
org
.apache
.catalina
.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at
com
.ecyrd.jspwiki.ui.WikiServletFilter.doFilter(WikiServletFilter.java:
99)
at
com.ecyrd.jspwiki.ui.WikiJSPFilter.doFilter(WikiJSPFilter.java:91)
at
org
.apache
.catalina
.core
.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:
215)
at
org
.apache
.catalina
.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at
org
.tuckey
.web
.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:
738)
at
org
.apache
.catalina
.core
.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:
215)
at
org
.apache
.catalina
.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at
org
.apache
.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:
213)
at
org
.apache
.catalina.core.StandardContextValve.invoke(StandardContextValve.java:
174)
at
org
.apache
.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at
org
.apache
.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
at
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:
548)
at
org
.apache
.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:
108)
at
org
.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:
174)
at
org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:200)
at
org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:283)
at
org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:773)
at
org
.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:
703)
at org.apache.jk.common.ChannelSocket
$SocketConnection.runIt(ChannelSocket.java:895)
at org.apache.tomcat.util.threads.ThreadPool
$ControlRunnable.run(ThreadPool.java:689)
at java.lang.Thread.run(Thread.java:595)
]]></log4j:throwable>
</log4j:event>
