I'm guessing the error is reasonably accurate and you attempted to access a getter or setter on a null bean object. Unfortunately you so carved up the stack trace it's extremely difficult to offer any more advice than that.

Additionally, if this worked in tomcat 4.1 you may have been relying on a bug behavior in tomcat 4.1/jdk 1.4 that's been fixed in tomcat 5.5.23/jdk 1.6.

--David

ZHOU Ping C wrote:
hello all:
  I bulid a project  use tomcat+struts+hibernate. The develop tool is
MyEclipse

  At beginning I use tomcat 4.1 , jdk 1.4 and hibernate 2.0 , the
project works well.
Recently I updata tomcat from 4.1 to 5.5.23 and jdk from 1.4 to
1.6, some errors come out.

  The errors as follows:

   ERROR [http-8080-1] (ApplicationDispatcher.java:723) -
Servlet.service() for servlet jsp threw exception
org.apache.jasper.JasperException: Attempted a bean operation on a null
object.
........................................................................
.......................................................................
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
        at      at java.lang.Thread.run(Thread.java:619)
Can anybody help me?

  Thanks


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