<form:form method="post" commandName="User">
   User Name :
      <form:input path="email"/>
   Password :
     <form:input path="password"/>

<input type="submit" align="center" value="Execute">

<bean name="/uservalidate.htm" class="com.sufalam.mailserver.presentation.web.UserValidateFormController">
        <property name="sessionForm" value="true"/>
        <property name="commandName" value="User"/>
        <property name="commandClass" value="com.sufalam.mailserver.bean.User"/>
        <property name="formView" value="login"/>
        <property name="successView" value="layout.jsp"/>
        <property name="userSecurityProcessor" ref="IUserSecurityProcessor"/>
    </bean>

public class UserValidateFormController extends SimpleFormController {

    /** Logger for this class and subclasses */
    protected final Log logger = LogFactory.getLog(getClass());
    private IUserSecurityProcessor userSecurityProcessor;

    public ModelAndView onSubmit(Object command)
            throws ServletException, SufalamException {
            ModelAndView mav = new ModelAndView();
            Map model = new HashMap();


        String username = ((User) command).getEmail();
        String password = ((User) command).getPassword();
        List userChecking = new ArrayList();
        userChecking = userSecurityProcessor.findByAll(username, password, 0.0);
        System.out.println("userChecking length = "+userChecking.size());
        if (userChecking.size() == 1) {
            return new ModelAndView("layout");
            //return new ModelAndView(new RedirectView(getSuccessView()));
        }

        return new ModelAndView("login", model);

    }

    protected Object formBackingObject(HttpServletRequest request) throws ServletException {
        User user = new User();
        return user;
    }

  public void setUserSecurityProcessor(IUserSecurityProcessor userSecurityProcessor) {
        this.userSecurityProcessor = userSecurityProcessor;

    }

return new ModelAndView(new RedirectView(getSuccessView()));

return new ModelAndView(new RedirectView("success.htm");

else { return new ModelAndView( "login", model ); }

if (userChecking.size() == 1) {
        return new ModelAndView("layout");
        //return new ModelAndView(new RedirectView(getSuccessView()));
    }
    model.put("User", command);
    return new ModelAndView("login", model);

return new ModelAndView("redirect:...htm"); = >Could not resolve view with name 'redirect:...htm' in servlet with name 'dispatcher'
and instead of
return new ModelAndView(new RedirectView()); =>ok.