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From Weijian Fang ...@ecs.soton.ac.uk>
Subject Re: "Tag failed" error
Date Wed, 22 Apr 2009 19:18:21 GMT
thanks. that is a relief.
Cheers,

Weijian



2009/4/22 Janne Jalkanen <janne.jalkanen@ecyrd.com>:
>
> 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>
>
>

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