basically i need to check if session.getAttribute("param") == null or not before using that object .
thanks.
On Friday, February 14, 2003, at 12:39 PM, Mufaddal wrote:
I have a jsp page which has the following code in it.
<% if(session.isNew() == false && session.getAttribute("XYZ").equals("true"))
{
%>
// do some HTML
<% }
else
{
%>
// do some HTML
<%
}
%>
The following exception is thrown:
java.lang.NullPointerException
at include._0002finclude_0002fheader_0002ejspheader_jsp_1._jspService(_000 2finclude_0002fheader_0002ejspheader_jsp_1.java:65)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:119)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.jasper.servlet.JspServlet$JspCountedServlet.service(JspServl et.java:130)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspServl et.java:282)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:429 )
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:500)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java:405 )
at org.apache.tomcat.core.Handler.service(Handler.java:287)
at org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372)
at org.apache.tomcat.facade.RequestDispatcherImpl.doInclude(RequestDispatc herImpl.java:400)
at org.apache.tomcat.facade.RequestDispatcherImpl.include(RequestDispatche rImpl.java:270)
at org.apache.jasper.runtime.PageContextImpl.include(PageContextImpl.java: 414)
at login._0002flogin_0002fLogin_0002ejspLogin_jsp_0._jspService(_0002flogi n_0002fLogin_0002ejspLogin_jsp_0.java:63)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:119)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.jasper.servlet.JspServlet$JspCountedServlet.service(JspServl et.java:130)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspServl et.java:282)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:429 )
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:500)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java:405 )
at org.apache.tomcat.core.Handler.service(Handler.java:287)
at org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372)
at org.apache.tomcat.core.ContextManager.internalService(ContextManager.ja va:806)
at org.apache.tomcat.core.ContextManager.service(ContextManager.java:752)
at org.apache.tomcat.service.http.HttpConnectionHandler.processConnection( HttpConnectionHandler.java:213)
at org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java:41 6)
at org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:5 01)
at java.lang.Thread.run(Thread.java:554)
I am suspecting that since my session object is not created ? or invalid ? this exception pops up. this jsp page is included in another jsp page called Boo.jsp. I access Boo.jsp the first time i client logs in. Why is this exception being thrown .. any leads ?
Thanks.
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