hi, i encounter a problem after deploying war file to jboss3.0.4-tomcat4.1.12 container. it issues error " Cannot retrieve definition for form bean LoginAction"; yet i have already an action named LoginAction in the folder. what might causes such error occurred? the folder name space looks like: com.oreilly.actions.* and com.oreilly.forms.* and the source embedded with struts tag as follow: the source, in fact, is derived from onjava.com's sample with modifing its source code expcet adding struts tag. i appreciate any suggestions, sincerely. thank you very much. ps: there's no problem when generating meta files and other source, except can't run through web. i suppose i may lose some important tags yet i don't what it is.
===========Form=======
/*
* LoginForm.java
*/
package com.oreilly.forms;
import javax.servlet.http.HttpServletRequest;
import org.apache.struts.action.ActionError;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionMapping;
/**
* @struts:form name="LoginForm"
*
* Form bean for the Login main page. There are two
fields on this
* form used for authentication
* <ul>
* <li>username - the username to login
* <li>password - the password to authenticate
* </ul>
*/
public final class LoginForm extends ActionForm {
private String userName = null;
private String password = null;
/**
* Get the userName
[EMAIL PROTECTED] String
*/
public String getUserName() {
return (userName);
}
/**
* Set the userName.
* @param userName
*/
public void setUserName(String newUserName) {
userName = newUserName;
}
/**
* Get the password
[EMAIL PROTECTED] String
*/
public String getPassword() {
return (password);
}
/**
* Set the password.
* @param password
*/
public void setPassword(String newPassword) {
password = newPassword;
}
/**
* Reset all properties to their default values.
*
* @param mapping The mapping used to select this
instance
* @param request The servlet request we are
processing
*/
public void reset(ActionMapping mapping,
HttpServletRequest request) {
userName = null;
password = null;
}
/**
* Validate the properties that have been set from
this HTTP request,
* and return an <code>ActionErrors</code> object
that encapsulates any
* validation errors that have been found. If no
errors are found, return
* <code>null</code> or an
<code>ActionErrors</code> object with no
* recorded error messages.
*
* @param mapping The mapping used to select this
instance
* @param request The servlet request we are
processing
*/
public ActionErrors validate(ActionMapping
mapping,
HttpServletRequest
request) {
ActionErrors errors = new ActionErrors();
// For this form, only a username is required
if( userName == null || userName.length()==0 ){
errors.add("userName",new
ActionError("error.userName.required"));
}
return (errors);
}
}
======Action======
package com.oreilly.actions;
import java.io.IOException;
import java.rmi.RemoteException;
import javax.ejb.CreateException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.ActionError;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionForward;
import com.oreilly.forms.LoginForm;
/**
* @struts:action path="/login"
* name="LoginAction"
* scope="request"
* input="/index.jsp"
* validate="false"
* redirect="false"
* @struts:action-forward name="success"
path="/Welcome.jsp"
* redirect="false"
* @struts:action-forward name="failure"
path="/Login.jsp"
* redirect="false"
*
* <strong>LoginAction</strong> demonstrates how an
action class is called within the struts framework
* For the purposes of this sample, we simple
demonstrate how the perform is called,
* a sample action, and a return
*
[EMAIL PROTECTED] Sue Spielman Switchback Software LLC
www.switchbacksoftware.com
*/
public class LoginAction extends AbstStrutsActionBase
{
/**
* Black box method used to authenticate a user.
There would typically
* be a bean (or EJB) here that actually does the
work.
* A lookup would be done (as shown in the base
class) and create on the home interface
* to authenticate the user against some backend
database.
[EMAIL PROTECTED] String containing username
[EMAIL PROTECTED] String containing password
[EMAIL PROTECTED] boolean - true authenticated, false not
authenticated.
*/
public boolean authenticate(String username,
String password)
{
// Do the appropriate lookup and calls.
// That code is not provided as part of this
sample.
// Instead, it is just to demonstrate the
interaction
// of the action class with business logic
tier.
return(true);
}
/**
* Override base class with specific
<strong>perform</strong> implementation
* for this class.
* @param mapping The ActionMapping used to select
this instance
* @param actionForm The optional
AbstActionFormBase bean for this request (if any)
* @param request The HTTP request we are
processing
* @param response The HTTP response we are
creating
* @exception IOException if an input/output error
occurs
* @exception ServletException if a servlet
exception occurs
*/
public ActionForward perform(ActionMapping
mapping, ActionForm form,
HttpServletRequest request,
HttpServletResponse response) throws IOException,
ServletException
{
// Assume that the login fails, so that the
login page is redisplayed
// if the user isn't authenticated
boolean validLogin=false;
ActionForward actionForward =
mapping.findForward(LOGIN);
// Create the container for any errors that
occur
ActionErrors errors = new ActionErrors();
// Extract attributes and parameters we will
need from the incoming
// form.
LoginForm loginForm = (LoginForm) form;
String userName = null;
String password = null;
if (loginForm != null){
userName = loginForm.getUserName();
password = loginForm.getPassword();
validLogin = authenticate(userName,
password);
}
if (validLogin){
// Forward control to the specified
'success' URI specified in the structs-config.xml
actionForward =
mapping.findForward(SUCCESS);
// Save something into the session for
later use.
request.getSession(true).setAttribute("USERNAME",
userName);
} else {
errors.add("login", new
ActionError("error.login.authenticate"));
}
// If any messages is required, save the
specified error messages keys
// into the HTTP request for use by the
<struts:errors> tag.
if (!errors.empty()) {
saveErrors(request, errors);
}
// Forward control to the appropriate URI as
determined by the action.
return (actionForward);
}
}
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