[ 
http://issues.apache.org/jira/browse/MYFACES-791?page=comments#action_12357045 
] 

Chris Barlow commented on MYFACES-791:
--------------------------------------

Sorry, here is the stacktrace:

java.lang.NullPointerException
        at java.net.URLEncoder.encode(URLEncoder.java:185)
        at 
org.apache.myfaces.convert.StringArrayConverter.getAsString(StringArrayConverter.java:90)
        at 
org.apache.myfaces.convert.StringArrayConverter.getAsString(StringArrayConverter.java:56)
        at 
org.apache.myfaces.renderkit.RendererUtils.getStringValue(RendererUtils.java:259)
        at 
org.apache.myfaces.renderkit.html.HtmlTextRendererBase.renderOutput(HtmlTextRendererBase.java:65)
        at 
org.apache.myfaces.renderkit.html.HtmlTextRendererBase.encodeEnd(HtmlTextRendererBase.java:53)
        at 
javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:331)
        at 
org.apache.myfaces.renderkit.RendererUtils.renderChild(RendererUtils.java:450)
        at 
org.apache.myfaces.renderkit.html.HtmlGridRendererBase.renderChildren(HtmlGridRendererBase.java:203)
        at 
org.apache.myfaces.renderkit.html.HtmlGridRendererBase.encodeEnd(HtmlGridRendererBase.java:85)
        at 
javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:331)
        at 
org.apache.myfaces.renderkit.RendererUtils.renderChild(RendererUtils.java:450)
        at 
org.apache.myfaces.renderkit.html.HtmlGridRendererBase.renderChildren(HtmlGridRendererBase.java:203)
        at 
org.apache.myfaces.renderkit.html.HtmlGridRendererBase.encodeEnd(HtmlGridRendererBase.java:85)
        at 
javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:331)
        at javax.faces.webapp.UIComponentTag.encodeEnd(UIComponentTag.java:349)
        at javax.faces.webapp.UIComponentTag.doEndTag(UIComponentTag.java:253)
        at 
org.apache.myfaces.taglib.UIComponentBodyTagBase.doEndTag(UIComponentBodyTagBase.java:55)
        at 
org.apache.jsp.jsp.wizard.profile_jsp._jspx_meth_h_panelGrid_0(profile_jsp.java:383)
        at 
org.apache.jsp.jsp.wizard.profile_jsp._jspx_meth_f_view_0(profile_jsp.java:327)
        at 
org.apache.jsp.jsp.wizard.profile_jsp._jspService(profile_jsp.java:290)
        at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
        at 
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
        at 
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
        at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
        at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237)
        at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
        at 
org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:704)
        at 
org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:590)
        at 
org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:510)
        at 
org.apache.jasper.runtime.JspRuntimeLibrary.include(JspRuntimeLibrary.java:966)
        at 
org.apache.jasper.runtime.PageContextImpl.include(PageContextImpl.java:581)
        at org.apache.tiles.TilesUtilImpl.doInclude(TilesUtilImpl.java:103)
        at org.apache.tiles.TilesUtil.doInclude(TilesUtil.java:137)
        at org.apache.taglib.tiles.InsertTag.doInclude(InsertTag.java:748)
        at 
org.apache.taglib.tiles.InsertTag$InsertHandler.doEndTag(InsertTag.java:875)
        at org.apache.taglib.tiles.InsertTag.doEndTag(InsertTag.java:454)
        at 
org.apache.jsp.jsp.layouts.wizard_002dlayout_jsp._jspx_meth_tiles_insert_0(wizard_002dlayout_jsp.java:570)
        at 
org.apache.jsp.jsp.layouts.wizard_002dlayout_jsp._jspx_meth_h_form_0(wizard_002dlayout_jsp.java:542)
        at 
org.apache.jsp.jsp.layouts.wizard_002dlayout_jsp._jspService(wizard_002dlayout_jsp.java:346)
        at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
        at 
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
        at 
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
        at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
        at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237)
        at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
        at 
org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:704)
        at 
org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:474)
        at 
org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:409)
        at 
org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:312)
        at 
org.apache.myfaces.context.servlet.ServletExternalContextImpl.dispatch(ServletExternalContextImpl.java:415)
        at 
org.apache.shale.tiles.TilesViewHandler.dispatchToTile(TilesViewHandler.java:327)
        at 
org.apache.shale.tiles.TilesViewHandler.renderView(TilesViewHandler.java:165)
        at 
org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:330)
        at javax.faces.webapp.FacesServlet.service(FacesServlet.java:95)
        at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237)
        at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
        at 
org.apache.myfaces.component.html.util.ExtensionsFilter.doFilter(ExtensionsFilter.java:122)
        at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:186)
        at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
        at 
org.apache.shale.faces.ShaleApplicationFilter.doFilter(ShaleApplicationFilter.java:280)
        at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:186)
        at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
        at 
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)
        at 
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
        at 
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
        at 
org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:198)
        at 
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:152)
        at 
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
        at 
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:462)
        at 
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
        at 
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
        at 
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)
        at 
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
        at 
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
        at 
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
        at 
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
        at 
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
        at 
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
        at 
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
        at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929)
        at 
org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
        at 
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)
        at 
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705)
        at 
org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577)
        at 
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
        at java.lang.Thread.run(Thread.java:534)

> NPE in org.apache.myfaces.convert.StringArrayConverter.getAsString(String[], 
> boolean)
> -------------------------------------------------------------------------------------
>
>          Key: MYFACES-791
>          URL: http://issues.apache.org/jira/browse/MYFACES-791
>      Project: MyFaces
>         Type: Bug
>   Components: General
>     Versions: 1.1.0
>     Reporter: Chris Barlow

>
> This happens when one or more array values are null.

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