JavaBean can be accessed from JSP but not Servlet, why?

[mattmao]

Generally speaking, JSP and servlet are equivalent.

I found one strange question:

I've created a JavaBean class called UserinfoBean.class and put it inside /WEB-INF/classes/uts/ait/cmao/

It could be accessed from using the <jsp:useBean class="uts/ait/cmao/UserinfoBean" scope="session" /> tag
and set/get attribute tags worked as well.

But when I tried to use a servlet to access the JavaBean, using explicit java code like:

package mypackage (all the servlets and JavaBeans are in this package);

import *

code block omitted.

user = (UserinfoBean)session.getAttribute("userinfo");

another code block omitted.

I isseded: javac myServlet.java

But the compiler refused to generate the .class file, pointing at an error that it cannot resolve symbol UserinfoBean in my java code.

I guess my CLASSPATH is okay. Otherwise the JSP page couldn't find it using the <jsp:useBean> tag.

But there must be something wrong. I followed the samples in the reference book called core Servlet and JavaServerPages, so the template should be fine.

Thank you in advance.

[dmjpro]

<jsp:useBean name = "userinfo" class="uts/ait/cmao/UserinfoBean" scope="session" /> tag
 

You can access this variable userinfo with in Session.
As long the session persists the lifetime of this variable also persists.


Kind regards,
Dmjpro.