Spring Web MVC Tiles属性错误

Question

I am using tiles in spring web mvc, where I am getting the error.

<?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="base.definition" template="/template/mainTemplate.jsp">
        <put-attribute name="title" value="Piranha"></put-attribute>
        <put-attribute name="header" value="/template/header.jsp"></put-attribute>
        <put-attribute name="content" value=""></put-attribute>
        <put-attribute name="footer" value="/template/footer.jsp"></put-attribute>
    </definition>


    <definition name="adminHome" extends="base.definition">
        <put-attribute name="content" value="/view/manage/adminHome.jsp"></put-attribute>
        <put-attribute name="maincontent" value=""></put-attribute>
    </definition>
    <definition name="insertProduct" extends="adminHome">
        <put-attribute name="maincontent" value="/view/manage/insertProduct.jsp"></put-attribute>
    </definition>
</tiles-definitions>

AdminHome.jsp

<%@ taglib prefix="form" uri="http://www.springframework.org/tags/form" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ taglib prefix="tiles" uri="http://tiles.apache.org/tags-tiles" %>

<div align="center">Restricted Area - Administrator</div>
<table>
    <tr>
        <td>
            DATA    
        </td>
        <td>
            <tiles:insertAttribute name="maincontent" />
        </td>
    </tr>
</table>

Error

org.apache.tiles.template.NoSuchAttributeException: Attribute 'maincontent' not found.
    org.apache.tiles.template.DefaultAttributeResolver.computeAttribute(DefaultAttributeResolver.java:50)
    org.apache.tiles.template.InsertAttributeModel.resolveAttribute(InsertAttributeModel.java:165)
    org.apache.tiles.template.InsertAttributeModel.execute(InsertAttributeModel.java:121)
    org.apache.tiles.jsp.taglib.InsertAttributeTag.doTag(InsertAttributeTag.java:299)
    org.apache.jsp.view.manage.adminHome_jsp._jspx_meth_tiles_005finsertAttribute_005f0(adminHome_jsp.java:116)
    org.apache.jsp.view.manage.adminHome_jsp._jspService(adminHome_jsp.java:87)
    org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
    org.apache.jasper.runtime.JspRuntimeLibrary.include(JspRuntimeLibrary.java:954)
    org.apache.jasper.runtime.PageContextImpl.doInclude(PageContextImpl.java:684)
    org.apache.jasper.runtime.PageContextImpl.include(PageContextImpl.java:678)
    org.apache.tiles.request.jsp.JspRequest.doInclude(JspRequest.java:123)
    org.apache.tiles.request.AbstractViewRequest.dispatch(AbstractViewRequest.java:47)
    org.apache.tiles.request.render.DispatchRenderer.render(DispatchRenderer.java:47)
    org.apache.tiles.request.render.ChainedDelegateRenderer.render(ChainedDelegateRenderer.java:68)
    org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:259)
    org.apache.tiles.template.InsertAttributeModel.renderAttribute(InsertAttributeModel.java:188)
    org.apache.tiles.template.InsertAttributeModel.execute(InsertAttributeModel.java:132)
    org.apache.tiles.jsp.taglib.InsertAttributeTag.doTag(InsertAttributeTag.java:299)
    org.apache.jsp.template.mainTemplate_jsp._jspx_meth_tiles_005finsertAttribute_005f2(mainTemplate_jsp.java:340)
    org.apache.jsp.template.mainTemplate_jsp._jspService(mainTemplate_jsp.java:130)
    org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
    org.apache.tiles.request.servlet.ServletRequest.forward(ServletRequest.java:265)
    org.apache.tiles.request.servlet.ServletRequest.doForward(ServletRequest.java:228)
    org.apache.tiles.request.AbstractClientRequest.dispatch(AbstractClientRequest.java:57)
    org.apache.tiles.request.render.DispatchRenderer.render(DispatchRenderer.java:47)
    org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:259)
    org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:397)
    org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:238)
    org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:221)
    org.apache.tiles.renderer.DefinitionRenderer.render(DefinitionRenderer.java:59)
    org.springframework.web.servlet.view.tiles3.TilesView.renderMergedOutputModel(TilesView.java:132)
    org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:303)
    org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1244)
    org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1027)
    org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:971)
    org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893)
    org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:967)
    org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:858)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
    org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:843)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
    org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:316)
    org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:126)
    org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:90)
    org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
    org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:114)
    org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
    org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:122)
    org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
    org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:111)
    org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
    org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:169)
    org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
    org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:48)
    org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
    org.springframework.security.web.authentication.www.BasicAuthenticationFilter.doFilterInternal(BasicAuthenticationFilter.java:158)
    org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
    org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:205)
    org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
    org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:120)
    org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
    org.springframework.security.web.csrf.CsrfFilter.doFilterInternal(CsrfFilter.java:96)
    org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
    org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:64)
    org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
    org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:53)
    org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
    org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:91)
    org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
    org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:213)
    org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:176)
    org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:344)
    org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:261)

Answer 1

There are few problem with your configuration

First of all adminHome is extending the main definition. When you extend a definition you must have only attributes of the parent definition. You can only override attributes not add new ones.

So you need to add maincontent to the base definition and adjust the mainTemplate.jsp accordingly

Something like below

<definition name="base.definition" template="/template/mainTemplate.jsp">
   <put-attribute name="title" value="Piranha"></put-attribute>
   <put-attribute name="header" value="/template/header.jsp"></put-attribute>
   <put-attribute name="content" value=""></put-attribute>
   <put-attribute name="maincontent" value=""></put-attribute>
   <put-attribute name="footer" value="/template/footer.jsp"></put-attribute>
</definition>

<definition name="adminHome" extends="base.definition">
    <put-attribute name="content" value="/view/manage/adminHome.jsp"></put-attribute>
    <put-attribute name="maincontent" value="/page/of/your/content"></put-attribute>
</definition>

However, I do not understand why you want to have two pages of content for a single definition.....

It is also important to add maincontent in your template with tiles:insertAttribute AdminHome.jsp should not have tiles attributes but only the content of your page.

Please refer to the official documentation for further help