Problem integrating tiles in Spring webapp
Apologies if this has been answered before but I've been struggling with this problem for a while now.
I'm attempting to implement tiles in my webapp.
I have a tiles configurer and view resolver as follows:
Code:
<bean id="tilesConfigurer" class="org.springframework.web.servlet.view.tiles2.TilesConfigurer">
<property name="definitions">
<list>
<value>/WEB-INF/conf/core/tiles-defs.xml</value>
</list>
</property>
</bean>
<bean id="viewResolver" class="org.springframework.web.servlet.view.UrlBasedViewResolver" >
<property name="viewClass" value="org.springframework.web.servlet.view.tiles2.TilesView" />
</bean>
My controller seems to return the view name as expected (e.g. "hello" for /hello.html), and my tiles are defined as follows:
Code:
<definition name="template" template="/WEB-INF/layouts/default/core/template.jsp">
<put-attribute name="header" value="/WEB-INF/layouts/default/core/header.jsp"/>
<put-attribute name="body" value="/WEB-INF/layouts/default/core/empty.jsp" />
<put-attribute name="footer" value="/WEB-INF/layouts/default/core/footer.jsp" />
</definition>
<definition name="hello" extends="template" >
<put-attribute name="body" value="/WEB-INF/jsp/hello.jsp" />
</definition>
However, when loading the page I get the following exception (I've shortened the output to fit in the post), any idea what's causing it?
Code:
SEVERE: Servlet.service() for servlet jsp threw exception
java.lang.NullPointerException
at org.apache.struts.tiles.taglib.InsertTag.processAttribute(InsertTag.java:690)
at org.apache.struts.tiles.taglib.InsertTag.createTagHandler(InsertTag.java:481)
at org.apache.struts.tiles.taglib.InsertTag.doStartTag(InsertTag.java:441)
at org.apache.jsp.WEB_002dINF.layouts.default_.core.template_jsp._jspx_meth_tiles_005finsert_005f0(template_jsp.java:138)
......
SEVERE: Servlet.service() for servlet [dispatcher] in context with path [/CustomerWebapp] threw exception [Request processing failed; nested exception is org.apache.tiles.impl.CannotRenderException: ServletException including path '/WEB- INF/layouts/default/core/template.jsp'.] with root cause
java.lang.NullPointerException
at org.apache.struts.tiles.taglib.InsertTag.processAttribute(InsertTag.java:690)
at org.apache.struts.tiles.taglib.InsertTag.createTagHandler(InsertTag.java:481)
at org.apache.struts.tiles.taglib.InsertTag.doStartTag(InsertTag.java:441)
at org.apache.jsp.WEB_002dINF.layouts.default_.core.template_jsp._jspx_meth_tiles_005finsert_005f0(template_jsp.java:138)
at org.apache.jsp.WEB_002dINF.layouts.default_.core.template_jsp._jspService(template_jsp.java:92)
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)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:690)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:477)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:402)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:329)
at org.apache.tiles.servlet.context.ServletTilesRequestContext.forward(ServletTilesRequestContext.java:241)
at org.apache.tiles.servlet.context.ServletTilesRequestContext.dispatch(ServletTilesRequestContext.java:222)
at org.apache.tiles.renderer.impl.TemplateAttributeRenderer.write(TemplateAttributeRenderer.java:44)
at org.apache.tiles.renderer.impl.AbstractBaseAttributeRenderer.render(AbstractBaseAttributeRenderer.java:106)
at org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:670)
at org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:690)
at org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:644)
at org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:627)
at org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:321)
at org.springframework.web.servlet.view.tiles2.TilesView.renderMergedOutputModel(TilesView.java:124)
at org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:262)
at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1180)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:950)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:852)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882)
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:778)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:225)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1001)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:585)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)
