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From Benedikt Mohrmann <mohrm...@mail.upb.de>
Subject Re: Plugin ClassCastException
Date Mon, 22 Sep 2008 08:02:19 GMT
Hi,

problem is still actual :( !
I have already installed a new JSPWiki version and downloaded the actual 
JSPWiki src and imported it into my Eclipse- still same error.

I compared the working plugin and the new one and there is one 
difference in the .classpath file (contained in the .jar):
the working one says:
<classpathentry kind="src" path="/JSPWiki"/>

and the not working one:
<classpathentry combineaccessrules="false" kind="src" path="/JSPWiki"/>

Dont know if that matters, but I tried to fixx it, but I don't get it.

Help is welcome,
Benedikt


Janne Jalkanen schrieb:
>
> In that case my guess is that your classpath contains two copies of 
> JSPWiki.jar with different versions...  Or, that Eclipse is using a 
> different version of JSPWiki.jar than your actual instance of JSPWiki.
>
> /Janne
>
> On 21 Sep 2008, at 14:25, Benedikt Mohrmann wrote:
>
>> Hi,
>>
>> I already do so.
>> As a test, I just tried the following class:
>>
>>
>> import com.ecyrd.jspwiki.WikiContext;
>> import com.ecyrd.jspwiki.plugin.PluginException;
>> import com.ecyrd.jspwiki.plugin.WikiPlugin;
>>
>>
>> public class ReadRoomStructurePlugin implements WikiPlugin {
>>
>>    public String execute(WikiContext context, Map params)
>>            throws PluginException {
>>        // TODO Auto-generated method stub
>>        return "x";
>>    }
>>
>> }
>>
>>
>> Same error as before!
>>
>> Regards
>> Benedikt
>>
>>
>> Janne Jalkanen schrieb:
>>>
>>> You must implement the WikiPlugin interface.
>>>
>>> public class ReadRoomStructurePlugin implements WikiPlugin
>>> {
>>> ...
>>> }
>>>
>>> /Janne
>>>
>>> On 21 Sep 2008, at 14:07, Benedikt Mohrmann wrote:
>>>
>>>> Hi,
>>>>
>>>> I already developed a plugin, which works quite well.
>>>> Now I tried to develope a new one, export it via Eclipse as a .jar 
>>>> file, but when I visit the page, where it should be inserted I get 
>>>> the error:
>>>> "Instanziierung des Plugins 'ReadRoomStructurePlugin' fehlgeschlagen."
>>>> English: "Instantiation of Plugin 'ReadRoomStructurePlugin' failed.
>>>>
>>>> The Stacktrace says:
>>>>
>>>> 2008-09-21 12:48:18,421 [http-localhost%2F127.0.0.1-8080-1] INFO 
>>>> com.ecyrd.jspwiki.plugin.PluginManager JSPWiki:/JSPWiki/ 
>>>> JSPWiki:http://localhost:8080/JSPWiki/ - Cannot initialize plugin 
>>>> ReadRoomStructurePlugin
>>>> java.lang.ClassCastException: ReadRoomStructurePlugin cannot be 
>>>> cast to com.ecyrd.jspwiki.plugin.WikiPlugin
>>>>    at 
>>>> com.ecyrd.jspwiki.plugin.PluginManager$WikiPluginInfo.newPluginInstance(PluginManager.java:868)

>>>>
>>>>    at 
>>>> com.ecyrd.jspwiki.plugin.PluginManager$WikiPluginInfo.initializePlugin(PluginManager.java:794)

>>>>
>>>>    at 
>>>> com.ecyrd.jspwiki.plugin.PluginManager.registerPlugin(PluginManager.java:683)

>>>>
>>>>    at 
>>>> com.ecyrd.jspwiki.plugin.PluginManager.execute(PluginManager.java:348)
>>>>    at com.ecyrd.jspwiki.forms.FormOutput.execute(FormOutput.java:127)
>>>>    at 
>>>> com.ecyrd.jspwiki.plugin.PluginManager.execute(PluginManager.java:383)
>>>>    at 
>>>> com.ecyrd.jspwiki.parser.PluginContent.getText(PluginContent.java:158)
>>>>    at 
>>>> org.jdom.output.XMLOutputter.printTextRange(XMLOutputter.java:1054)
>>>>    at org.jdom.output.XMLOutputter.printElement(XMLOutputter.java:934)
>>>>    at 
>>>> org.jdom.output.XMLOutputter.printContentRange(XMLOutputter.java:1007)
>>>>    at 
>>>> org.jdom.output.XMLOutputter.outputElementContent(XMLOutputter.java:445)

>>>>
>>>>    at 
>>>> com.ecyrd.jspwiki.render.XHTMLRenderer.getString(XHTMLRenderer.java:63) 
>>>>
>>>>    at 
>>>> com.ecyrd.jspwiki.render.RenderingManager.getHTML(RenderingManager.java:258)

>>>>
>>>>    at 
>>>> com.ecyrd.jspwiki.render.RenderingManager.getHTML(RenderingManager.java:299)

>>>>
>>>>    at com.ecyrd.jspwiki.WikiEngine.textToHTML(WikiEngine.java:1469)
>>>>    at com.ecyrd.jspwiki.WikiEngine.getHTML(WikiEngine.java:1411)
>>>>    at 
>>>> com.ecyrd.jspwiki.tags.InsertPageTag.doWikiStartTag(InsertPageTag.java:128)

>>>>
>>>>    at 
>>>> com.ecyrd.jspwiki.tags.WikiTagBase.doStartTag(WikiTagBase.java:89)
>>>>    at 
>>>> org.apache.jsp.templates.default_.PageTab_jsp._jspx_meth_wiki_005fInsertPage_005f0(PageTab_jsp.java:677)

>>>>
>>>>    at 
>>>> org.apache.jsp.templates.default_.PageTab_jsp._jspService(PageTab_jsp.java:277)

>>>>
>>>>    at 
>>>> org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
>>>>    at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
>>>>    at 
>>>> org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:373)

>>>>
>>>>    at 
>>>> org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:336)

>>>>
>>>>    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:290)

>>>>
>>>>    at 
>>>> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

>>>>
>>>>    at 
>>>> org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:654)

>>>>
>>>>    at 
>>>> org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:557)

>>>>
>>>>    at 
>>>> org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:481)

>>>>
>>>>    at 
>>>> org.apache.jasper.runtime.JspRuntimeLibrary.include(JspRuntimeLibrary.java:968)

>>>>
>>>>    at 
>>>> org.apache.jasper.runtime.PageContextImpl.include(PageContextImpl.java:609)

>>>>
>>>>    at com.ecyrd.jspwiki.tags.IncludeTag.doEndTag(IncludeTag.java:84)
>>>>    at 
>>>> org.apache.jsp.templates.default_.PageContent_jsp._jspx_meth_wiki_005fInclude_005f0(PageContent_jsp.java:442)

>>>>
>>>>    at 
>>>> org.apache.jsp.templates.default_.PageContent_jsp._jspService(PageContent_jsp.java:148)

>>>>
>>>>    at 
>>>> org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
>>>>    at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
>>>>    at 
>>>> org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:373)

>>>>
>>>>    at 
>>>> org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:336)

>>>>
>>>>    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:290)

>>>>
>>>>    at 
>>>> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

>>>>
>>>>    at 
>>>> org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:654)

>>>>
>>>>    at 
>>>> org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:557)

>>>>
>>>>    at 
>>>> org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:481)

>>>>
>>>>    at 
>>>> org.apache.jasper.runtime.JspRuntimeLibrary.include(JspRuntimeLibrary.java:968)

>>>>
>>>>    at 
>>>> org.apache.jasper.runtime.PageContextImpl.include(PageContextImpl.java:609)

>>>>
>>>>    at com.ecyrd.jspwiki.tags.ContentTag.doEndTag(ContentTag.java:126)
>>>>    at 
>>>> org.apache.jsp.templates.default_.ViewTemplate_jsp._jspx_meth_wiki_005fContent_005f0(ViewTemplate_jsp.java:566)

>>>>
>>>>    at 
>>>> org.apache.jsp.templates.default_.ViewTemplate_jsp._jspService(ViewTemplate_jsp.java:142)

>>>>
>>>>    at 
>>>> org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
>>>>    at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
>>>>    at 
>>>> org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:373)

>>>>
>>>>    at 
>>>> org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:336)

>>>>
>>>>    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:290)

>>>>
>>>>    at 
>>>> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

>>>>
>>>>    at 
>>>> org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:654)

>>>>
>>>>    at 
>>>> org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:557)

>>>>
>>>>    at 
>>>> org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:481)

>>>>
>>>>    at 
>>>> org.apache.jasper.runtime.JspRuntimeLibrary.include(JspRuntimeLibrary.java:968)

>>>>
>>>>    at 
>>>> org.apache.jasper.runtime.PageContextImpl.include(PageContextImpl.java:609)

>>>>
>>>>    at com.ecyrd.jspwiki.tags.IncludeTag.doEndTag(IncludeTag.java:84)
>>>>    at org.apache.jsp.Wiki_jsp._jspService(Wiki_jsp.java:114)
>>>>    at 
>>>> org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
>>>>    at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
>>>>    at 
>>>> org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:373)

>>>>
>>>>    at 
>>>> org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:336)

>>>>
>>>>    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:290)

>>>>
>>>>    at 
>>>> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

>>>>
>>>>    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:235)

>>>>
>>>>    at 
>>>> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

>>>>
>>>>    at 
>>>> org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)

>>>>
>>>>    at 
>>>> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)

>>>>
>>>>    at 
>>>> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

>>>>
>>>>    at 
>>>> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)

>>>>
>>>>    at 
>>>> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)

>>>>
>>>>    at 
>>>> org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:182)

>>>>
>>>>    at 
>>>> org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84)

>>>>
>>>>    at 
>>>> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)

>>>>
>>>>    at 
>>>> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)

>>>>
>>>>    at 
>>>> org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157)

>>>>
>>>>    at 
>>>> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)

>>>>
>>>>    at 
>>>> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:262)

>>>>
>>>>    at 
>>>> org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)

>>>>
>>>>    at 
>>>> org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)

>>>>
>>>>    at 
>>>> org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:446) 
>>>>
>>>>    at java.lang.Thread.run(Unknown Source)
>>>>
>>>>
>>>> Any idea, why it is not able to cast ?
>>>>
>>>> Regards
>>>> Benedikt
>>>
>


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