HTTP Status 500 - java.lang.NullPointerException

type Exception report

message java.lang.NullPointerException

description The server encountered an internal error that prevented it from fulfilling this request.

exception

org.apache.jasper.JasperException: java.lang.NullPointerException
	org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:560)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:476)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:396)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:340)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
	com.mmk.web.ControllerServlet.doGet(ControllerServlet.java:24)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:622)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
	com.mmk.web.filters.ReplaceTextFilter.doFilter(ReplaceTextFilter.java:137)
	com.mmk.web.filters.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:170)
	com.mmk.web.redirect.RedirectFilter.doFilter(RedirectFilter.java:41)

root cause

java.lang.NullPointerException
	com.mmk.web.MenuHandler.getInstance(MenuHandler.java:102)
	com.mmk.web.taglib.MenuHandlerTag.doStartTag(MenuHandlerTag.java:38)
	org.apache.jsp.index_jsp._jspx_meth_sm_005fmenuhandler_005f0(index_jsp.java:846)
	org.apache.jsp.index_jsp._jspService(index_jsp.java:204)
	org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:435)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:396)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:340)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
	com.mmk.web.ControllerServlet.doGet(ControllerServlet.java:24)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:622)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
	com.mmk.web.filters.ReplaceTextFilter.doFilter(ReplaceTextFilter.java:137)
	com.mmk.web.filters.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:170)
	com.mmk.web.redirect.RedirectFilter.doFilter(RedirectFilter.java:41)

note The full stack trace of the root cause is available in the Apache Tomcat/8.0.38 logs.


Apache Tomcat/8.0.38