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Posted to users@tiles.apache.org by Susan Woodbury <sw...@comverge.com> on 2014/09/07 19:28:39 UTC
nullpointer exception in getAsString of tiles 3.0.4 with EL
expressions
Hi.
I'm having an issue with configuring tiles 3.0.4 with spring 3.2.10
the following layout.jsp file succeeds to get the title which is set via value=, while the css and footer which is set via the el functionality fails
with a nullpointerexception..
but the footer only fails in getAsString, but not in insertAttribute, so i believe it should work in getAsString as well.
Am I missing something?
==================================================================================================
the error is:
DEBUG org.apache.tiles.template.GetAsStringModel - Ignoring exception
java.lang.NullPointerException
at org.apache.tiles.template.GetAsStringModel.renderAttribute(GetAsStringModel.java:177)
at org.apache.tiles.template.GetAsStringModel.execute(GetAsStringModel.java:122)
at org.apache.tiles.jsp.taglib.GetAsStringTag.doTag(GetAsStringTag.java:261)
at org.apache.jsp.client.default_.layout.layout_jsp._jspx_meth_tiles_005fgetAsString_005f1(layout_jsp.java:258)
at org.apache.jsp.client.default_.layout.layout_jsp._jspService(layout_jsp.java:132)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
==============================================================================
I have a tiles_en.xml of:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE tiles-definitions PUBLIC "-//Apache Software Foundation//DTD Tiles Configuration 3.0//EN" "http://tiles.apache.org/dtds/tiles-config_3_0.dtd">
<tiles-definitions>
<definition name="nouser.default.definition" templateExpression="/client/default/layout/layout.jsp">
<put-attribute name="client" value="${client}"/>
<put-attribute name="title" value="| Default" />
<put-attribute name="meta" expression="/client/default/layout/meta.jsp"/>
<put-attribute name="css" expression="/client/${client}/layout/css/enerwise_v2.css"/>
<put-attribute name="css_print" expression="/client/${client}/layout/css/em_print.css"/>
<put-attribute name="header" expression="/client/default/layout/header.jsp"/>
<put-attribute name="head" expression="/client/default/layout/head.jsp"/>
<put-attribute name="menu" expression="/client/default/layout/menu.jsp"/>
<put-attribute name="body" expression="/client/default/layout/body.jsp"/>
<put-attribute name="footer" expression="/client/${client}/layout/footer.jsp"/>
</definition>
<definition name="hello.page" extends="nouser.default.definition">
<put-attribute name="title" value="| Welcome" />
<put-attribute name="body" value="/jsp/helloWorld.jsp" />
</definition>
</tiles-definitions>
=================================================================================================
layout.jsp:
<%@taglib uri="http://www.springframework.org/tags" prefix="bean"%>
<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<%@ taglib uri="http://tiles.apache.org/tags-tiles" prefix="tiles"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title><bean:message code="label.project" /><tiles:getAsString name="title" /></title> <!--SUCCEEDS using value=-->
<link rel=stylesheet href="<tiles:getAsString name='css' ignore='true' />" type="text/css" /><!-- FAILS using expression = -->
<link rel=stylesheet href="<tiles:getAsString name='css_print' ignore='true' />" type="text/css" media="print" /><!-- FAILS using expression =-->
<script src="<%=request.getContextPath()%>/js/CalendarPopup.js" type="text/javascript"></script>
<script type="text/javascript">document.write(getCalendarStyles());</script>
<script type="text/javascript" src="<%=request.getContextPath()%>/js/jquery-1.6.4.min.js"></script>
<script language="javascript1.2" src="<%=request.getContextPath()%>/js/jquery.countdown.min.js"></script>
</head>
<body>
<a name="top"></a>
<!-- begin wrapper -->
<div id="wrapper">
<!-- begin header -->
<tiles:insertAttribute name="header" />
<!-- end header -->
<!-- begin navigation -->
<tiles:insertAttribute name='menu' />
<!-- end navigation -->
<!-- begin content -->
<div id="content">
<tiles:insertAttribute name='body' />
<br />
<!-- begin footer -->
<tiles:getAsString name="footer" ignore='true' /> <!-- FAILS using expression =-->
<tiles:insertAttribute name="footer" ignore='true'/><!-- SUCCEEDS using expression =-->
<!-- end footer -->
</div>
<!-- end content -->
</div>
<!-- end wrapper -->
</body>
</html>
====================================================================================
Susan M. Woodbury
_______________________________________
Re: nullpointer exception in getAsString of tiles 3.0.4 with EL expressions
Posted by Nicolas Le Bas <ma...@nlebas.net>.
Hi Susan,
Looking through the code, I believe getAsString does not currently
support expressions. That's weird, I believe it should not be difficult
to implement.
Can you file an improvement request on jira?
(https://issues.apache.org/jira/browse/TILES) I'll see if I can put a
patch together this week and coordinate a new release.
Thanks,
Nick.
On 14-09-07 01:28 PM, Susan Woodbury wrote:
> Hi.
>
> I'm having an issue with configuring tiles 3.0.4 with spring 3.2.10
>
> the following layout.jsp file succeeds to get the title which is set via value=, while the css and footer which is set via the el functionality fails
> with a nullpointerexception..
> but the footer only fails in getAsString, but not in insertAttribute, so i believe it should work in getAsString as well.
> Am I missing something?
>
> ==================================================================================================
> the error is:
> DEBUG org.apache.tiles.template.GetAsStringModel - Ignoring exception
> java.lang.NullPointerException
> at org.apache.tiles.template.GetAsStringModel.renderAttribute(GetAsStringModel.java:177)
> at org.apache.tiles.template.GetAsStringModel.execute(GetAsStringModel.java:122)
> at org.apache.tiles.jsp.taglib.GetAsStringTag.doTag(GetAsStringTag.java:261)
> at org.apache.jsp.client.default_.layout.layout_jsp._jspx_meth_tiles_005fgetAsString_005f1(layout_jsp.java:258)
> at org.apache.jsp.client.default_.layout.layout_jsp._jspService(layout_jsp.java:132)
> at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
> at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432)
> at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
> at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
>
> ==============================================================================
> I have a tiles_en.xml of:
>
> <?xml version="1.0" encoding="UTF-8"?>
> <!DOCTYPE tiles-definitions PUBLIC "-//Apache Software Foundation//DTD Tiles Configuration 3.0//EN" "http://tiles.apache.org/dtds/tiles-config_3_0.dtd">
> <tiles-definitions>
> <definition name="nouser.default.definition" templateExpression="/client/default/layout/layout.jsp">
> <put-attribute name="client" value="${client}"/>
> <put-attribute name="title" value="| Default" />
> <put-attribute name="meta" expression="/client/default/layout/meta.jsp"/>
> <put-attribute name="css" expression="/client/${client}/layout/css/enerwise_v2.css"/>
> <put-attribute name="css_print" expression="/client/${client}/layout/css/em_print.css"/>
> <put-attribute name="header" expression="/client/default/layout/header.jsp"/>
> <put-attribute name="head" expression="/client/default/layout/head.jsp"/>
> <put-attribute name="menu" expression="/client/default/layout/menu.jsp"/>
> <put-attribute name="body" expression="/client/default/layout/body.jsp"/>
> <put-attribute name="footer" expression="/client/${client}/layout/footer.jsp"/>
> </definition>
>
> <definition name="hello.page" extends="nouser.default.definition">
> <put-attribute name="title" value="| Welcome" />
> <put-attribute name="body" value="/jsp/helloWorld.jsp" />
> </definition>
>
> </tiles-definitions>
>
> =================================================================================================
> layout.jsp:
>
> <%@taglib uri="http://www.springframework.org/tags" prefix="bean"%>
> <%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
> <%@ taglib uri="http://tiles.apache.org/tags-tiles" prefix="tiles"%>
>
> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
> "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
>
> <html xmlns="http://www.w3.org/1999/xhtml">
> <head>
> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
> <title><bean:message code="label.project" /><tiles:getAsString name="title" /></title> <!--SUCCEEDS using value=-->
> <link rel=stylesheet href="<tiles:getAsString name='css' ignore='true' />" type="text/css" /><!-- FAILS using expression = -->
> <link rel=stylesheet href="<tiles:getAsString name='css_print' ignore='true' />" type="text/css" media="print" /><!-- FAILS using expression =-->
> <script src="<%=request.getContextPath()%>/js/CalendarPopup.js" type="text/javascript"></script>
> <script type="text/javascript">document.write(getCalendarStyles());</script>
> <script type="text/javascript" src="<%=request.getContextPath()%>/js/jquery-1.6.4.min.js"></script>
> <script language="javascript1.2" src="<%=request.getContextPath()%>/js/jquery.countdown.min.js"></script>
> </head>
> <body>
> <a name="top"></a>
> <!-- begin wrapper -->
> <div id="wrapper">
> <!-- begin header -->
> <tiles:insertAttribute name="header" />
> <!-- end header -->
> <!-- begin navigation -->
> <tiles:insertAttribute name='menu' />
> <!-- end navigation -->
> <!-- begin content -->
> <div id="content">
> <tiles:insertAttribute name='body' />
> <br />
> <!-- begin footer -->
> <tiles:getAsString name="footer" ignore='true' /> <!-- FAILS using expression =-->
> <tiles:insertAttribute name="footer" ignore='true'/><!-- SUCCEEDS using expression =-->
> <!-- end footer -->
> </div>
> <!-- end content -->
> </div>
> <!-- end wrapper -->
> </body>
> </html>
> ====================================================================================
> Susan M. Woodbury
>
> _______________________________________
>