[opencms-dev] Error uploading images, NoClassDefFoundError

[Fabian Huschka]

Generally speaking: /Headless mode/ is a system configuration in which 
the display device, keyboard, or mouse is lacking.

See 
http://java.sun.com/developer/technicalArticles/J2SE/Desktop/headless/ 
for further information.

\Fabian

Seth Lenzi schrieb:
> Yes, I made this change and it works now. No more error. (I meant to 
> reply to my own message to tell others..)
>
> Do you know why this works though? What is the headless attribute of AWT?
>
> Thanks.
>
>
> Fabian Huschka wrote:
>   
>> Hello Seth,
>>
>> how do you invoke Tomcat? Try to set the Java option 
>> "java.awt.headless=true" before invoking Tomcat.
>>
>> e.g.
>>
>> export JAVA_OPTS ="$JAVA_OPTS -Djava.awt.headless=true"
>> ....
>> <run tomcat>
>>
>>
>> Regards,
>>
>>
>> \Fabian
>>
>>
>> Seth Lenzi schrieb:
>>     
>>> Getting this error in the opencms log when uploading images. This 
>>> particular stack trace was from uploading a 1 megabyte jpg file.  Do I 
>>> need to include some other libraries?
>>>
>>>
>>> 20 Feb 2008 14:59:24,684 ERROR [rg.opencms.workplace.CmsDialog:1423] The 
>>> workplace dialog caused an error.
>>> java.lang.NoClassDefFoundError
>>>          at java.lang.Class.forName0(Native Method)
>>>          at java.lang.Class.forName(Class.java:164)
>>>          at 
>>> java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment(GraphicsEnvironment.java:68)
>>>          at 
>>> java.awt.image.BufferedImage.createGraphics(BufferedImage.java:1141)
>>>          at 
>>> com.alkacon.simapi.Simapi.ensureImageIsSystemType(Simapi.java:351)
>>>          at com.alkacon.simapi.Simapi.read(Simapi.java:287)
>>>          at com.alkacon.simapi.Simapi.read(Simapi.java:259)
>>>          at 
>>> org.opencms.loader.CmsImageScaler.<init>(CmsImageScaler.java:177)
>>>          at 
>>> org.opencms.file.types.CmsResourceTypeImage$CmsImageAdjuster.adjust(CmsResourceTypeImage.java:112)
>>>          at 
>>> org.opencms.file.types.CmsResourceTypeImage.createResource(CmsResourceTypeImage.java:296)
>>>          at org.opencms.file.CmsObject.createResource(CmsObject.java:733)
>>>          at 
>>> org.opencms.db.CmsImportFolder.importZipResource(CmsImportFolder.java:322)
>>>          at org.opencms.db.CmsImportFolder.<init>(CmsImportFolder.java:107)
>>>          at 
>>> org.opencms.workplace.explorer.CmsNewResourceUpload.actionUpload(CmsNewResourceUpload.java:434)
>>>          at 
>>> org.apache.jsp.WEB_002dINF.jsp.offline.system.workplace.commons.newresource_005fupload_jsp._jspService(newresource_005fupload_jsp.java:110)
>>>          at 
>>> org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
>>>          at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
>>>          at 
>>> org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:332)
>>>          at 
>>> org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
>>>          at 
>>> org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
>>>          at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
>>>          at 
>>> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
>>>          at 
>>> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
>>>          at 
>>> org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)
>>>          at 
>>> org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:574)
>>>          at 
>>> org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:499)
>>>          at 
>>> org.opencms.flex.CmsFlexRequestDispatcher.includeExternal(CmsFlexRequestDispatcher.java:193)
>>>          at 
>>> org.opencms.flex.CmsFlexRequestDispatcher.include(CmsFlexRequestDispatcher.java:169)
>>>          at org.opencms.loader.CmsJspLoader.service(CmsJspLoader.java:999)
>>>          at 
>>> org.opencms.flex.CmsFlexRequestDispatcher.includeInternalWithCache(CmsFlexRequestDispatcher.java:422)
>>>          at 
>>> org.opencms.flex.CmsFlexRequestDispatcher.include(CmsFlexRequestDispatcher.java:173)
>>>          at 
>>> org.opencms.loader.CmsJspLoader.dispatchJsp(CmsJspLoader.java:233)
>>>          at org.opencms.loader.CmsJspLoader.load(CmsJspLoader.java:575)
>>>          at 
>>> org.opencms.loader.CmsResourceManager.loadResource(CmsResourceManager.java:948)
>>>          at org.opencms.main.OpenCmsCore.showResource(OpenCmsCore.java:1492)
>>>          at org.opencms.main.OpenCmsServlet.doGet(OpenCmsServlet.java:171)
>>>          at org.opencms.main.OpenCmsServlet.doPost(OpenCmsServlet.java:183)
>>>          at javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
>>>          at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
>>>          at 
>>> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
>>>          at 
>>> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
>>>          at 
>>> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
>>>          at 
>>> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
>>>          at 
>>> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
>>>          at 
>>> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
>>>          at 
>>> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
>>>          at 
>>> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
>>>          at 
>>> org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:199)
>>>          at 
>>> org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:282)
>>>          at 
>>> org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:754)
>>>          at 
>>> org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:684)
>>>          at 
>>> org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:876)
>>>          at 
>>> org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
>>>          at java.lang.Thread.run(Thread.java:595)
>>>
>>>
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>>>   
>>>       
>>     
>
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