NullPointerException when calling
PageFlowUtils.getCurrentActionResolver(request)
---------------------------------------------------------------------------------
Key: BEEHIVE-830
URL: http://issues.apache.org/jira/browse/BEEHIVE-830
Project: Beehive
Type: Bug
Components: NetUI
Versions: v1m1
Environment: Windows
Reporter: Xibin Zeng
Calling the following code snippet from a jsp:
<%
request.getSession().invalidate();
Object o =
org.apache.beehive.netui.pageflow.PageFlowUtils.getCurrentActionResolver(request);
System.out.println ("ActionResolver is " + o);
%>
Yield the following result:
HTTP Status 500 -
type Exception report
message
description The server encountered an internal error () that prevented it from
fulfilling this request.
exception
org.apache.jasper.JasperException
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:372)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
root cause
java.lang.NullPointerException
org.apache.beehive.netui.pageflow.handler.Handlers.get(Handlers.java:61)
org.apache.beehive.netui.pageflow.PageFlowUtils.getCurrentActionResolver(PageFlowUtils.java:251)
org.apache.jsp.hello.hello_jsp._jspService(hello_jsp.java:99)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
note The full stack trace of the root cause is available in the Apache
Tomcat/5.0.28 logs.
This is due to internally how Beehive obtain ServletContext through a
HttpServletRequest. The solution seems to be to let calling code supply the
ServletContext object rather than trying to manage it in the Beehive code.
Client should call the version that takes a ServletContext whenever possible.
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