Spring security 3 – How to display login errors ?

	<beans:bean id="authenticationFailureHandler"
		class="org.springframework.security.web.authentication.ExceptionMappingAuthenticationFailureHandler">
		<beans:property name="exceptionMappings">
			<beans:props>
				<beans:prop key="org.springframework.security.authentication.BadCredentialsException">/login/badCredentials</beans:prop>
				<beans:prop key="org.springframework.security.authentication.CredentialsExpiredException">/login/credentialsExpired</beans:prop>
				<beans:prop key="org.springframework.security.authentication.LockedException">/login/accountLocked</beans:prop>
				<beans:prop key="org.springframework.security.authentication.DisabledException">/login/accountDisabled</beans:prop>
			</beans:props>
		</beans:property>
	</beans:bean>

 <form-login login-page='/login' default-target-url="/home"  authentication-failure-handler-ref="authenticationFailureHandler"/>

    @RequestMapping(value = "/login/{error}", method = RequestMethod.GET)
   
    public final String displayLoginform(Model model,  @PathVariable final String error) {
        model.addAttribute("error", error);
    	return "login";
    }