type Exception report
message An exception occurred processing JSP page /linkcolumn.jsp at line 23
description The server encountered an internal error that prevented it from fulfilling this request.
exception
org.apache.jasper.JasperException: An exception occurred processing JSP page /linkcolumn.jsp at line 23 20: } 21: 22: String position = request.getParameter("column"); 23: String linkUrl = Manager.getInstance().getLinkUrlContainTreeId(owner, position); 24: linkUrl = WebPublish.modeLink(linkUrl, request.getRequestURI(), mode, owner); 25: response.sendRedirect(response.encodeRedirectURL(linkUrl)); 26: %> Stacktrace: org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:575) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:477) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:395) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:339) javax.servlet.http.HttpServlet.service(HttpServlet.java:731) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) org.apache.catalina.filters.ExpiresFilter.doFilter(ExpiresFilter.java:1201) webber.vsb.multiscreen.ScreenFilter.doFilter(ScreenFilter.java:138) webber.core.filter.WebberFilter.doFilter(WebberFilter.java:185)
root cause
java.lang.NullPointerException java.util.concurrent.ConcurrentHashMap.hash(ConcurrentHashMap.java:333) java.util.concurrent.ConcurrentHashMap.get(ConcurrentHashMap.java:988) webber.vsb.column.Manager.getTreeManager(Manager.java:213) webber.vsb.column.Manager.getLinkUrlContainTreeId(Manager.java:664) org.apache.jsp.linkcolumn_jsp._jspService(linkcolumn_jsp.java:108) org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) javax.servlet.http.HttpServlet.service(HttpServlet.java:731) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:439) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:395) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:339) javax.servlet.http.HttpServlet.service(HttpServlet.java:731) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) org.apache.catalina.filters.ExpiresFilter.doFilter(ExpiresFilter.java:1201) webber.vsb.multiscreen.ScreenFilter.doFilter(ScreenFilter.java:138) webber.core.filter.WebberFilter.doFilter(WebberFilter.java:185)
note The full stack trace of the root cause is available in the VAppServer/6.0.0 logs.