My welcome page "is displayed" as the very first
screen without any problem. The page has
<logic:present> and <logic:notPresent> tags, which
test if any registered user has logged on.
The problem occurred after I filled out username, and
clicked the "Submit" button. Thereafter, the welcome
page was not shown. My welcome page looks like the
following:
Welcome.jsp
<%@ taglib uri="/tags/struts-bean" prefix="bean" %>
<%@ taglib uri="/tags/struts-html" prefix="html" %>
<%@ taglib uri="/tags/struts-logic" prefix="logic" %>
<HTML>
<HEAD>
<TITLE>Welcome!</TITLE>
<html:base/>
</HEAD>
<BODY>
<logic:present name="user">
<H3>Welcome <bean:write name="user"
property="username"/>!</H3>
</logic:present>
<logic:notPresent scope="session" name="user">
<H3>Welcome World!</H3>
</logic:notPresent>
<html:errors/>
<UL>
<LI><html:link forward="logon">Sign
in</html:link></LI>
<logic:present name="user">
<LI><html:link forward="logoff">Sign
out</html:link></LI>
</logic:present>
</UL>
<IMG src='struts-power.gif' alt='Powered by Struts'>
</BODY>
</HTML>
--- Kwok Peng Tuck <[EMAIL PROTECTED]> wrote:
> You might want to put System.out.println("Line
> [number]") ; to see
> the flow in your action. BTW did you actually put
> anything(like hello
> world) in Welcome.jsp ?
>
>
> Caroline Jen wrote:
>
> >Which resource file needs to be updated? I have
> >checked the application.properties. Nothing in
> that
> >file is relevant to my problem.
> >--- Abhijeet Mahalkar
> ><[EMAIL PROTECTED]> wrote:
> >
> >
> >>have u updated the Resource files... ?
> >>abhijeet
> >>
> >>----- Original Message -----
> >>From: "Caroline Jen" <[EMAIL PROTECTED]>
> >>To: <[EMAIL PROTECTED]>
> >>Sent: Tuesday, September 30, 2003 9:45 AM
> >>Subject: No Error Message But A Blank Page Is
> >>Displayed.
> >>
> >>
> >>I am experimenting a basic application - logon. I
> >>got
> >>the first two screens working without problem.
> >>However, the third screen displays a blank page
> (no
> >>error message). I am having a very difficult time
> >>to
> >>figure out the problem; henceforth, seeking help.
> >>Here is the history of my application:
> >>
> >>1. http://localhost:8080/LogonPractice/index.jsp
> (no
> >>problem and I clicked on "Sign in")
> >>2.
> >>
> >>
> >>
>
>http://localhost:8080/LogonPractice/Logon.do;jsessionid=170B50E4D8E07EE36290E98342E8BF9C
> >
> >
> >>(no problem and the screen asked for username and
> >>password. I filled out the information and
> clicked
> >>on
> >>"Submit")
> >>3.
> >>http://localhost:8080/LogonPractice/LogonSubmit.do
> >>(displayed a blank page)
> >>
> >>The Tomcat log file shows the following (no error
> >>message at all):
> >>
> >>2003-09-29 23:29:26 action: Processing a GET for
> >>/Logon
> >>2003-09-29 23:29:26 action: Looking for Action
> >>instance for class
> >>org.apache.struts.actions.ForwardAction
> >>2003-09-29 23:29:26 action: Double checking for
> >>Action instance already there
> >>2003-09-29 23:29:26 action: Creating new Action
> >>instance
> >>2003-09-29 23:29:35 action: Processing a POST for
> >>/LogonSubmit
> >>2003-09-29 23:29:35 action: Looking for
> ActionForm
> >>bean under attribute 'logonForm'
> >>2003-09-29 23:29:35 action: Creating new
> ActionForm
> >>instance of class
> >>'org.apache.artimus.logon.LogonForm'
> >>2003-09-29 23:29:35 action: Storing instance
> under
> >>attribute 'logonForm' in scope 'request'
> >>2003-09-29 23:29:35 action: Populating bean
> >>properties from this request
> >>2003-09-29 23:29:35 action: Validating input form
> >>properties
> >>2003-09-29 23:29:35 action: No errors detected,
> >>accepting input
> >>2003-09-29 23:29:35 action: Looking for Action
> >>instance for class
> >>org.apache.artimus.logon.LogonAction
> >>2003-09-29 23:29:35 action: Double checking for
> >>Action instance already there
> >>2003-09-29 23:29:35 action: Creating new Action
> >>instance
> >>
> >>in my struts-config.xml, I have:
> >>
> >> <action
> >> path="/LogonSubmit"
> >>
> >>type="org.apache.artimus.logon.LogonAction"
> >> name="logonForm"
> >> scope="request"
> >> validate="true"
> >> input="/signin/Logon.jsp">
> >> <forward
> >> name="valid"
> >> path="/signin/Welcome.jsp"/>
> >> </action>
> >>
> >>and my LogonAction.java is:
> >>
> >>package org.apache.artimus.logon;
> >>
> >>import java.io.IOException;
> >>import javax.servlet.ServletException;
> >>import javax.servlet.http.HttpServletRequest;
> >>import javax.servlet.http.HttpSession;
> >>import javax.servlet.http.HttpServletResponse;
> >>import org.apache.struts.action.Action;
> >>import org.apache.struts.action.ActionError;
> >>import org.apache.struts.action.ActionErrors;
> >>import org.apache.struts.action.ActionForm;
> >>import org.apache.struts.action.ActionForward;
> >>import org.apache.struts.action.ActionMapping;
> >>import org.apache.struts.action.ActionServlet;
> >>
> >>import org.apache.artimus.lang.Constants;
> >>
> >>public final class LogonAction extends Action {
> >>
> >> public boolean isUserLogon(String username,
> >> String password) throws
> >>UserDirectoryException
> >>{
> >>
> >> return
> >>
> >>
> >>
>
>(UserDirectory.getInstance().isValidPassword(username,password));
> >
> >
> >> // return true;
> >>
> >> }
> >>
> >>
> >> public ActionForward execute(ActionMapping
> >>mapping,
> >> ActionForm form,
> >> HttpServletRequest request,
> >> HttpServletResponse response)
> >> throws IOException, ServletException {
> >>
> >> // Obtain username and password from web
> >>tier
> >> String username = ((LogonForm)
> >>form).getUsername();
> >> String password = ((LogonForm)
> >>form).getPassword();
> >>
> >> // Validate credentials with business tier
> >> boolean validated = false;
> >> try {
> >>
> >> validated =
> >>isUserLogon(username,password);
> >> }
> >>
> >> catch (UserDirectoryException ude) {
> >> // couldn't connect to user directory
> >> ActionErrors errors = new
> >>ActionErrors();
> >> errors.add(ActionErrors.GLOBAL_ERROR,
> >> new
> ActionError("error.logon.connect"));
> >> saveErrors(request,errors);
> >> // return to input page
> >> return (new
> >>ActionForward(mapping.getInput()));
> >> }
> >>
> >> if (!validated) {
> >> // credentials don't match
> >> ActionErrors errors = new
> >>ActionErrors();
> >> errors.add(ActionErrors.GLOBAL_ERROR,
> >> new
> ActionError("error.logon.invalid"));
> >> saveErrors(request,errors);
> >> // return to input page
> >> return (new
> >>ActionForward(mapping.getInput()));
> >> }
> >>
> >> // Save our logged-in user in the session,
> >> // because we use it again later.
> >> HttpSession session =
> request.getSession();
> >> session.setAttribute(Constants.USER_KEY,
>
=== message truncated ===
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