HDC调试需求开发（15万预算）,能者速来！>>>
jsp页面中，jstl 的<c:forEach>嵌套循环同一个集合出现异常，求解释。不要问我为什么要嵌套循环同一个集合，就解释一下为什么这么嵌套循环会出现异常，十分感谢.
jsp页面代码： <c:forEach items="${menu }" var="menu" > ${menu.name} <c:forEach items="${menu }" var="m"> ${m.name} </c:forEach> </c:forEach>
menu是 有数据的 list集合，异常信息如下: 严重: Servlet.service() for servlet jsp threw exception javax.servlet.jsp.JspTagException: Don't know how to iterate over supplied "items" in <forEach> at org.apache.taglibs.standard.tag.common.core.ForEachSupport.toForEachIterator(ForEachSupport.java:274) at org.apache.taglibs.standard.tag.common.core.ForEachSupport.supportedTypeForEachIterator(ForEachSupport.java:238) at org.apache.taglibs.standard.tag.common.core.ForEachSupport.prepare(ForEachSupport.java:155) at javax.servlet.jsp.jstl.core.LoopTagSupport.doStartTag(LoopTagSupport.java:256) at org.apache.jsp.WEB_002dINF.views.admin.page.left_jsp._jspx_meth_c_005fforEach_005f1(left_jsp.java:322) at org.apache.jsp.WEB_002dINF.views.admin.page.left_jsp._jspx_meth_c_005fforEach_005f0(left_jsp.java:285) at org.apache.jsp.WEB_002dINF.views.admin.page.left_jsp._jspService(left_jsp.java:148) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) at javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
七月 06, 2016 12:33:08 下午 org.apache.catalina.core.StandardWrapperValve invoke 严重: Servlet.service() for servlet [springmvc] in context with path [/cms] threw exception [org.apache.jasper.JasperException: An exception occurred processing JSP page /WEB-INF/views/admin/page/left.jsp at line 45 42: </li> 43: <c:forEach items="${menu }" var="menu" > 44: ${menu.name} 45: <c:forEach items="${menu }" var="m"> 46: ${m.name} 47: </c:forEach> 48: </c:forEach>