x标签在resin3中的错误解决

近期使用roller和resin3时出现如下错误：

1. ERROR2008-10-0620:16:61,364InsertTag$InsertHandler:doEndTag-ServletExceptionin'/WEB-INF/jsps/admin/rollerProperties.jsp':/WEB-INF/jsps/admin/rollerProperties.jsp:1:Illegalchildtagin"c:choose"tag:"x:when"tagIllegalchildtagin"c:choose"tag:"x:when"tagIllegalchildtagin"c:choose"tag:"x:when"tagIllegal"choose"withoutchild"when"tagcom.caucho.jsp.JspLineParseException:/WEB-INF/jsps/admin/rollerProperties.jsp:1:Illegalchildtagin"c:choose"tag:"x:when"tagIllegalchildtagin"c:choose"tag:"x:when"tagIllegalchildtagin"c:choose"tag:"x:when"tagIllegal"choose"withoutchild"when"tagatcom.caucho.jsp.java.JspNode.error(JspNode.java:1480)atcom.caucho.jsp.java.JspNode.error(JspNode.java:1471)atcom.caucho.jsp.java.JavaJspGenerator.validate(JavaJspGenerator.java:466)atcom.caucho.jsp.JspCompilerInstance.generate(JspCompilerInstance.java:475)atcom.caucho.jsp.JspCompilerInstance.compile(JspCompilerInstance.java:373)atcom.caucho.jsp.JspManager.compile(JspManager.java:233)atcom.caucho.jsp.JspManager.createPage(JspManager.java:177)atcom.caucho.jsp.JspManager.createPage(JspManager.java:157)atcom.caucho.jsp.PageManager.getPage(PageManager.java:248)atcom.caucho.jsp.PageManager.getPage(PageManager.java:166)atcom.caucho.jsp.QServlet.getSubPage(QServlet.java:292)atcom.caucho.jsp.QServlet.getPage(QServlet.java:210)atcom.caucho.server.dispatch.PageFilterChain.compilePage(PageFilterChain.java:206)atcom.caucho.server.dispatch.PageFilterChain.doFilter(PageFilterChain.java:133)atcom.caucho.server.webapp.DispatchFilterChain.doFilter(DispatchFilterChain.java:115)atcom.caucho.server.dispatch.ServletInvocation.service(ServletInvocation.java:229)atcom.caucho.server.webapp.RequestDispatcherImpl.include(RequestDispatcherImpl.java:485)atcom.caucho.server.webapp.RequestDispatcherImpl.include(RequestDispatcherImpl.java:350)atcom.caucho.jsp.PageContextImpl.include(PageContextImpl.java:927)atcom.caucho.jsp.PageContextImpl.include(PageContextImpl.java:864)atorg.apache.struts.tiles.TilesUtilImpl.doInclude(TilesUtilImpl.java:101)atorg.apache.struts.tiles.TilesUtil.doInclude(TilesUtil.java:137)atorg.apache.struts.taglib.tiles.InsertTag.doInclude(InsertTag.java:758)atorg.apache.struts.taglib.tiles.InsertTag$InsertHandler.doEndTag(InsertTag.java:890)atorg.apache.struts.taglib.tiles.InsertTag.doEndTag(InsertTag.java:460)

解决方法如下：
在resin.conf中加入
<jsp fast-jstl='false'/>

如下: <web-app-default>
<jsp fast-jstl='false'/>
...... ..... ......
</web-app-default>