Error in conversion Java Object to JavaScript
I use <a4j:support> for a <h:selectOneMenu>. I got the following exception. I do not know how to debug it. What might be the cause? Thanks in advance for help.
javax.faces.FacesException: Error in conversion Java Object to JavaScript
at org.ajax4jsf.framework.util.javascript.ScriptUtils.toScript(ScriptUtils.java:132)
at org.ajax4jsf.framework.util.javascript.ScriptUtils.toScript(ScriptUtils.java:97)
at org.ajax4jsf.framework.util.javascript.ScriptUtils.toScript(ScriptUtils.java:97)
at org.ajax4jsf.framework.util.javascript.JSFunction.appendScript(JSFunction.java:84)
at org.ajax4jsf.framework.renderer.AjaxRendererUtils.buildOnEvent(AjaxRendererUtils.java:174)
at org.ajax4jsf.framework.renderer.AjaxRendererUtils.buildOnClick(AjaxRendererUtils.java:131)
at org.ajax4jsf.renderkit.AjaxCommandRendererBase.getOnClick(AjaxCommandRendererBase.java:66)
at org.ajax4jsf.renderkit.html.CommandLinkRenderer.doEncodeBegin(CommandLinkRenderer.java:90)
at org.ajax4jsf.renderkit.html.CommandLinkRenderer.doEncodeBegin(CommandLinkRenderer.java:81)
at org.ajax4jsf.framework.renderer.RendererBase.encodeBegin(RendererBase.java:97)
at javax.faces.component.UIComponentBase.encodeBegin(UIComponentBase.java:515)
at org.apache.myfaces.shared_tomahawk.renderkit.RendererUtils.renderChild(RendererUtils.java:412)
at org.apache.myfaces.shared_tomahawk.renderkit.RendererUtils.renderChildren(RendererUtils.java:400)
at org.apache.myfaces.custom.datalist.HtmlListRenderer.encodeChildren(HtmlListRenderer.java:169)
at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:527)
at org.apache.myfaces.shared_impl.renderkit.RendererUtils.renderChild(RendererUtils.java:414)
at org.apache.myfaces.shared_impl.renderkit.RendererUtils.renderChildren(RendererUtils.java:400)
at org.apache.myfaces.shared_impl.renderkit.html.HtmlGroupRendererBase.encodeEnd(HtmlGroupRendererBase.java:78)
at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:539)
at org.apache.myfaces.shared_impl.renderkit.RendererUtils.renderChild(RendererUtils.java:419)
at org.apache.myfaces.shared_impl.renderkit.html.HtmlGridRendererBase.renderChildren(HtmlGridRendererBase.java:2
29)
at org.apache.myfaces.shared_impl.renderkit.html.HtmlGridRendererBase.encodeEnd(HtmlGridRendererBase.java:101)
at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:539)
at org.apache.myfaces.shared_impl.renderkit.RendererUtils.renderChild(RendererUtils.java:419)
at org.apache.myfaces.shared_impl.renderkit.html.HtmlGridRendererBase.renderHeaderOrFooter(HtmlGridRendererBase.
java:143)
at org.apache.myfaces.shared_impl.renderkit.html.HtmlGridRendererBase.encodeEnd(HtmlGridRendererBase.java:98)
at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:539)
at org.apache.myfaces.shared_tomahawk.renderkit.RendererUtils.renderChild(RendererUtils.java:419)
at org.apache.myfaces.shared_tomahawk.renderkit.RendererUtils.renderChildren(RendererUtils.java:400)
at org.apache.myfaces.shared_tomahawk.renderkit.RendererUtils.renderChild(RendererUtils.java:417)
at org.apache.myfaces.shared_tomahawk.renderkit.RendererUtils.renderChildren(RendererUtils.java:400)
at org.apache.myfaces.renderkit.html.ext.HtmlGroupRenderer.encodeEnd(HtmlGroupRenderer.java:66)
at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:539)
at org.ajax4jsf.framework.renderer.RendererBase.renderChild(RendererBase.java:256)
at org.ajax4jsf.framework.renderer.AjaxChildrenRenderer.encodeAjaxChild(AjaxChildrenRenderer.java:127)
at org.ajax4jsf.framework.renderer.AjaxChildrenRenderer.encodeAjaxChild(AjaxChildrenRenderer.java:118)
at org.ajax4jsf.framework.renderer.AjaxChildrenRenderer.encodeAjaxChild(AjaxChildrenRenderer.java:118)
at org.ajax4jsf.framework.renderer.AjaxChildrenRenderer.encodeAjaxChild(AjaxChildrenRenderer.java:118)
at org.ajax4jsf.framework.renderer.AjaxChildrenRenderer.encodeAjaxChild(AjaxChildrenRenderer.java:118)
at org.ajax4jsf.framework.renderer.AjaxChildrenRenderer.encodeAjaxChild(AjaxChildrenRenderer.java:118)
at org.ajax4jsf.framework.renderer.AjaxChildrenRenderer.encodeAjaxChild(AjaxChildrenRenderer.java:118)
at org.ajax4jsf.framework.renderer.AjaxContainerRenderer.encodeAjax(AjaxContainerRenderer.java:125)
at org.ajax4jsf.framework.ajax.AjaxViewRoot.encodeAjax(AjaxViewRoot.java:536)
at org.ajax4jsf.framework.ajax.AjaxContext.renderAjaxRegion(AjaxContext.java:289)
at org.ajax4jsf.framework.ajax.AjaxContext$2.invoke(AjaxContext.java:207)
at org.ajax4jsf.framework.ajax.JsfOneOneInvoker.invokeOnComponent(JsfOneOneInvoker.java:78)
at org.ajax4jsf.framework.ajax.AjaxContext.invokeOnComponent(AjaxContext.java:165)
at org.ajax4jsf.framework.ajax.AjaxContext.renderSubmittedAjaxRegion(AjaxContext.java:219)
at org.ajax4jsf.framework.ajax.AjaxViewHandler.renderView(AjaxViewHandler.java:252)
at org.apache.myfaces.lifecycle.RenderResponseExecutor.execute(RenderResponseExecutor.java:41)
at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:132)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:140)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.apache.myfaces.webapp.filter.ExtensionsFilter.doFilter(ExtensionsFilter.java:147)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.ajax4jsf.framework.ajax.xmlfilter.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:96)
at org.ajax4jsf.framework.ajax.xmlfilter.BaseFilter.doFilter(BaseFilter.java:220)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
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.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:175)
at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
at org.jboss.web.tomcat.tc5.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:156)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java
:664)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
at java.lang.Thread.run(Thread.java:595)
Caused by: javax.faces.FacesException: Error in conversion Java Object to JavaScript
at org.ajax4jsf.framework.util.javascript.ScriptUtils.toScript(ScriptUtils.java:132)
at org.ajax4jsf.framework.util.javascript.ScriptUtils.toScript(ScriptUtils.java:127)
... 80 more
Caused by: javax.faces.FacesException: Error in conversion Java Object to JavaScript
at org.ajax4jsf.framework.util.javascript.ScriptUtils.toScript(ScriptUtils.java:132)
at org.ajax4jsf.framework.util.javascript.ScriptUtils.toScript(ScriptUtils.java:127)
... 81 more
Caused by: javax.faces.FacesException: Error in conversion Java Object to JavaScript
at org.ajax4jsf.framework.util.javascript.ScriptUtils.toScript(ScriptUtils.java:132)
at org.ajax4jsf.framework.util.javascript.ScriptUtils.toScript(ScriptUtils.java:127)
... 82 more
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.apache.commons.beanutils.PropertyUtilsBean.invokeMethod(PropertyUtilsBean.java:1773)
at org.apache.commons.beanutils.PropertyUtilsBean.getSimpleProperty(PropertyUtilsBean.java:1132)
at org.apache.commons.beanutils.PropertyUtilsBean.getNestedProperty(PropertyUtilsBean.java:686)
at org.apache.commons.beanutils.PropertyUtilsBean.getProperty(PropertyUtilsBean.java:715)
at org.apache.commons.beanutils.PropertyUtils.getProperty(PropertyUtils.java:290)
at org.ajax4jsf.framework.util.javascript.ScriptUtils.toScript(ScriptUtils.java:127)
... 83 more
Caused by: java.net.UnknownServiceException: no content-type
at java.net.URLConnection.getContentHandler(URLConnection.java:1167)
at java.net.URLConnection.getContent(URLConnection.java:683)
at java.net.URL.getContent(URL.java:1021)
... 93 more
