I want use tiles in a JSP pages, but when a call to the JSP pages
the Tomcat return me this mensaje. Any idea ???? Any example to take
a look.
exception
org.apache.jasper.JasperException
org.apache.jasper.servlet.JspServletWrapper.service
(JspServletWrapper.java:3
58)
org.apache.jasper.servlet.JspServlet.serviceJspFile
(JspServlet.java:301)
org.apache.jasper.servlet.JspServlet.service
(JspServlet.java:248)
javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter
(MonitorFilter
.java:305)
org.apache.struts.action.RequestProcessor.doForward
(RequestProcessor.java:10
56)
org.apache.struts.tiles.TilesRequestProcessor.doForward
(TilesRequestProcesso
r.java:261)
org.apache.struts.action.RequestProcessor.processForwardConfig
(RequestProces
sor.java:388)
org.apache.struts.tiles.TilesRequestProcessor.processForwardConfig
(TilesRequ
estProcessor.java:316)
org.apache.struts.action.RequestProcessor.process
(RequestProcessor.java:231)
org.apache.struts.action.ActionServlet.process
(ActionServlet.java:1164)
org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:415)
javax.servlet.http.HttpServlet.service(HttpServlet.java:763)
javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter
(MonitorFilter
.java:305)
causa raíz
java.lang.NullPointerException
org.apache.struts.taglib.tiles.InsertTag.processAttribute
(InsertTag.java:685
)
org.apache.struts.taglib.tiles.InsertTag.createTagHandler
(InsertTag.java:476
)
org.apache.struts.taglib.tiles.InsertTag.doStartTag
(InsertTag.java:436)
org.apache.jsp.pages.Catalago_jsp._jspx_meth_tiles_insert_0
(Catalago_jsp.jav
a:104)
org.apache.jsp.pages.Catalago_jsp._jspService
(Catalago_jsp.java:76)
org.apache.jasper.runtime.HttpJspBase.service
(HttpJspBase.java:133)
javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
org.apache.jasper.servlet.JspServletWrapper.service
(JspServletWrapper.java:3
11)
org.apache.jasper.servlet.JspServlet.serviceJspFile
(JspServlet.java:301)
org.apache.jasper.servlet.JspServlet.service
(JspServlet.java:248)
javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter
(MonitorFilter
.java:305)
org.apache.struts.action.RequestProcessor.doForward
(RequestProcessor.java:10
56)
org.apache.struts.tiles.TilesRequestProcessor.doForward
(TilesRequestProcesso
r.java:261)
org.apache.struts.action.RequestProcessor.processForwardConfig
(RequestProces
sor.java:388)
org.apache.struts.tiles.TilesRequestProcessor.processForwardConfig
(TilesRequ
estProcessor.java:316)
org.apache.struts.action.RequestProcessor.process
(RequestProcessor.java:231)
org.apache.struts.action.ActionServlet.process
(ActionServlet.java:1164)
org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:415)
javax.servlet.http.HttpServlet.service(HttpServlet.java:763)
javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter
(MonitorFilter
.java:305)