我在打开JSF页面时正在检索此异常.这是怎么造成的,如何解决？
org.apache.jasper.JasperException: An exception occurred processing JSP page /searchResultJSF.jsp at line 18
15: <body>
16: <h1>SEARCH RESULT</h1>
17:
18: <h:dataTable id ="abc" value="#{SearchBean.dealerList}" var="dealer">
19: <h:column>
20: <f:facet name="header" >
21: <h:outputText value="Dealer name "/>
Stacktrace:
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:505)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:398)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:390)
com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:408)
com.sun.faces.application.ViewHandlerImpl.executePageToBuildView(ViewHandlerImpl.java:442)
com.sun.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:115)
com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:106)
com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:251)
com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:144)
javax.faces.webapp.FacesServlet.service(FacesServlet.java:245)
org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:390)
root cause
javax.servlet.ServletException: javax.servlet.jsp.JspException: java.lang.IllegalStateException: Component javax.faces.component.UIViewRoot@19ded20 not expected type. Expected: javax.faces.component.UIData. Perhaps you're missing a tag?
org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:858)
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:791)
org.apache.jsp.searchResultJSF_jsp._jspService(searchResultJSF_jsp.java:94)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:374)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:390)
com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:408)
com.sun.faces.application.ViewHandlerImpl.executePageToBuildView(ViewHandlerImpl.java:442)
com.sun.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:115) …