Hi,
I am quite new to Struts and have a problem with an Action and ActionForm. I
am running Struts 1.0.1 and Tomcat 4.0.1, my IDE is JBuilder 6 Enterprise.
I have the problem, that all the properties of a form are empty. When
running the program in the debugger I can see the following sequence of
operations being executed:
1. Constructor of my FormBean
2. Reset method
3. Validate method
All the setters are NOT called for whatever reason!
Here the simple Java Code of my Form:
public final class LogonForm extends ActionForm
{
private String mContainerName = "";
private String mUserName = "";
private String mPwd = "";
private String mAuthType = "";
public LogonForm()
{
System.out.println("Form created.");
}
public String getContainerName()
{
return mContainerName;
}
public void setContainerName(String ContName)
{
mContainerName = ContName;
}
public String getUserName()
{
return mUserName;
}
public void setUserName(String UserName)
{
mUserName = UserName;
}
public String getPassword()
{
return mPwd;
}
public void setPassword(String Password)
{
mPwd = Password;
}
public String getAuthType()
{
return mAuthType;
}
public void setAuthType(String AuthType)
{
mAuthType = AuthType;
}
public void reset(ActionMapping mapping, HttpServletRequest request)
{
mPwd = "";
mUserName = "";
mContainerName = "";
mAuthType = "";
}
public ActionErrors validate(ActionMapping mapping, HttpServletRequest
request)
{
System.out.println(mContainerName+ " " + mUserName);
ActionErrors errors = new ActionErrors();
if ((mUserName == null) || (mUserName.length() < 1))
errors.add("username", new
ActionError("error.username.required"));
if ((mPwd == null) || (mPwd.length() < 1))
errors.add("password", new
ActionError("error.password.required"));
if ((mContainerName == null) || (mContainerName.length() < 1))
errors.add("containername", new
ActionError("error.containername.required"));
return errors;
}
}
The HTML looks as follows:
<form action=/Echnaton/authenticate.do METHOD=POST >
<input type="Hidden" name="AuthType" value="WindowsNT" />
<table align="center" cellspacing="2" cellpadding="2" border="0">
<tr>
<td rowspan="4"><img src="../Images/Logon.gif" width="192" height="146"
border="0" alt=""></td>
<td width="120" id="FormFont">NT Domain:</td>
<td width="200" id="FormFont"><input type="text" name="ContainerName"
value="" size="30" maxlength="16"></td>
</tr>
<tr>
<td id="FormFont">Your User ID:</td>
<td id="FormFont"><input type="text" name="UserName" value="" size="30"
maxlength="20"></td>
</tr>
<tr>
<td id="FormFont">Password:</td>
<td id="FormFont"><input type="password" name="Password" value=""
size="30" maxlength="20"></td>
</tr>
<tr>
<td colspan="2" id="FormFont">
<input type="submit" value="Logon">
<input type="Reset" value="Clear">
</td>
</tr>
</table>
</form>
Here I must add, that this code is from a velocity macro, since I use
Velocity instead of JSP as Template for my 'View' layer in the MVC
architecture.
The action is implemented as follows:
public class authenticate extends EWCAction
{
public authenticate()
{
}
public ActionForward perform(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse
response)
throws IOException, ServletException
{
// Extract attributes we will need
StringBuffer AuthError = new StringBuffer(256);
Locale locale = getLocale(request);
MessageResources messages = getResources();
// Validate the request parameters specified by the user
ActionErrors errors = new ActionErrors();
String container = ((LogonForm)form).getContainerName();
String username = ((LogonForm)form).getUserName();
String password = ((LogonForm)form).getPassword();
String authtype = ((LogonForm)form).getAuthType();
EWCInit ei =
(EWCInit)request.getSession().getServletContext().getAttribute("EWCInit");
String IOR = ei.getFactoryIOR();
//
// do authentication
//
// .... do some CORBA processing here
// Report any errors we have discovered back to the original form
if (!errors.empty())
{
saveErrors(request, errors);
return (new ActionForward(mapping.getInput()));
}
// Forward control to the specified success URI
return (new ActionForward("/startApp.jsp"));
}
boolean doNTAuthentication(HttpSession session, String IOR, String
Container,
String UserName, String Pwd, StringBuffer
ErrMsg)
{
// .. a lot of CORBA Calls
return ret;
}
}
I have derived Action with my own action class which basically should check
the sessionstatus whenever a call is made. It looks as follows:
public class EWCAction extends Action
{
public EWCAction()
{
super();
}
public ActionForward perform(ActionMapping mapping, ActionForm form,
HttpServletRequest request,
HttpServletResponse response)
throws java.io.IOException, javax.servlet.ServletException
{
HttpSession session = request.getSession();
ActionForward fwd = null;
String AuthStatus = (String)session.getAttribute("AuthStatus");
if (AuthStatus != null) // session is OK
{
if (AuthStatus.equalsIgnoreCase("SUCCESS")) // user is authenticated
return null;
}
else // user needs to login
{
fwd = new ActionForward("/Templates/LogonForm.vm");
return fwd;
}
return (super.perform(mapping, form, request, response));
}
}
In my web.xml file I do a mapping for all actions ending with do to the
action servlet as follows:
<servlet>
<servlet-name>action</servlet-name>
<display-name>action</display-name>
<description>Standard action servlet for MVC architecture</description>
<servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
<init-param>
<param-name>debug</param-name>
<param-value>2</param-value>
</init-param>
<init-param>
<param-name>config</param-name>
<param-value>/WEB-INF/struts-config.xml</param-value>
</init-param>
<init-param>
<param-name>detail</param-name>
<param-value>2</param-value>
</init-param>
<load-on-startup>2</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>action</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
My struts-config.xml file looks as follows:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts
Configuration 1.0//EN"
"http://jakarta.apache.org/struts/dtds/struts-config_1_0.dtd";>
<struts-config><data-sources />
<!-- ========== Form Bean Definitions
=================================== -->
<form-beans type="org.apache.struts.action.ActionFormBean">
<form-bean name="LogonForm" type="ch.smartsol.EWC.forms.LogonForm" />
<form-bean name="ShowNTUserPropsForm"
type="ch.smartsol.EWC.ShowNTUserPropsForm" /></form-beans>
<!-- ========== Action Mapping Definitions
============================== -->
<action-mappings type="org.apache.struts.action.ActionMapping">
<action path="/authenticate" type="ch.smartsol.EWC.actions.authenticate"
name="LogonForm" scope="request" validate="true"
input="/Templates/LogonForm.vm">
</action>
<!-- The standard administrative actions available with Struts -->
<!-- These would be either omitted or protected by security -->
<!-- in a real application deployment -->
<action path="/admin/addFormBean"
type="org.apache.struts.actions.AddFormBeanAction" name="<none>" />
<action path="/admin/addForward"
type="org.apache.struts.actions.AddForwardAction" />
<action path="/admin/addMapping"
type="org.apache.struts.actions.AddMappingAction" />
<action path="/admin/reload"
type="org.apache.struts.actions.ReloadAction" />
<action path="/admin/removeFormBean"
type="org.apache.struts.actions.RemoveFormBeanAction" />
<action path="/admin/removeForward"
type="org.apache.struts.actions.RemoveForwardAction" />
<action path="/admin/removeMapping"
type="org.apache.struts.actions.RemoveMappingAction" />
</action-mappings>
</struts-config>
I have checked the names of my form tags with the names of my setter and
getter functions and they are correct. (I assume that the HTML Form name
UserName requires a setUserName() and getUserName() method in my Form Bean.)
However I do absolutely NOT understand, why the set methods are NOT called.
Can anybody give me a hint what I am doing wrong. In the debugger I can see
the request object. It has the correct URL with all the parameters and
correct values.
Any help would be greatly appreciated.
Thomas
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