Hello everybody!!
I have a strange error:
in the first page of my application, I make few JSP instructions:
I use a bean that reads from a text file and I put some session variables.
I'm sure that I don't use Hash tables in that code.
When I run it (on Tomcat) the strange error is:
Error: 500
Location: /wds/index.jsp
Internal Servlet Error:
javax.servlet.ServletException
at
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImp
l.java:459)
at
_0002findex_0002ejspindex_jsp_1._jspService(_0002findex_0002ejspindex_jsp_1.
java:118)
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$JspServletWrapper.service(JspServlet.ja
va:177)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:318)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:391)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java:404)
at org.apache.tomcat.core.Handler.service(Handler.java:286)
at org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372)
at
org.apache.tomcat.core.ContextManager.internalService(ContextManager.java:79
7)
at org.apache.tomcat.core.ContextManager.service(ContextManager.java:743)
at
org.apache.tomcat.service.connector.Ajp12ConnectionHandler.processConnection
(Ajp12ConnectionHandler.java:166)
at
org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java:416)
at
org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:498)
at java.lang.Thread.run(Thread.java:484)
Root cause:
java.lang.NullPointerException
at java.util.Hashtable.put(Hashtable.java:380)
at
org.apache.tomcat.session.StandardSession.setAttribute(StandardSession.java:
723)
at
org.apache.tomcat.session.StandardSession.putValue(StandardSession.java:629)
at
org.apache.tomcat.facade.HttpSessionFacade.putValue(HttpSessionFacade.java:1
47)
at
_0002findex_0002ejspindex_jsp_1._jspService(_0002findex_0002ejspindex_jsp_1.
java:89)
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$JspServletWrapper.service(JspServlet.ja
va:177)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:318)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:391)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java:404)
at org.apache.tomcat.core.Handler.service(Handler.java:286)
at org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372)
at
org.apache.tomcat.core.ContextManager.internalService(ContextManager.java:79
7)
at org.apache.tomcat.core.ContextManager.service(ContextManager.java:743)
at
org.apache.tomcat.service.connector.Ajp12ConnectionHandler.processConnection
(Ajp12ConnectionHandler.java:166)
at
org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java:416)
at
org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:498)
at java.lang.Thread.run(Thread.java:484)
Why I have a NullPointerException on HashTable when I don't use Hash
Tables??????
Does anybody has experienced this error??????
What is it????????
Many thanks in advance to everybody!!!!!!!!!!!!!!!!
Robuschi Roberto -------------------- Delfi srl
P.za Ravenet 1/b - 43100 PARMA
Tel. 0521/932474 Fax 0521/989045
[EMAIL PROTECTED] --- http://www.delfi.it
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