Problem trying to use spring security with my jsp aplication - spring

Question

It's seems so easy to use spring security following a tutorial, but when I try to do the same with this app I can get it to work (I must admit that I haven't written ) .
/-----------------Edit-------------------/
Now with the help of some great people, I finally got the application to ask the user to authenticate himself,but now I've run into a new problem: When I try to access the application using one of the users listed below(applicationContext-security.xml), I get this message :
Here's web.xml code:
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
<servlet>
<servlet-name>dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>2</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>dispatcher</servlet-name>
<url-pattern>*.htm</url-pattern>
</servlet-mapping>
<session-config>
<session-timeout>
30
</session-timeout>
</session-config>
<filter>
<filter-name>springSecurityFilterChain</filter-name>
<filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
</filter>
<filter-mapping>
<filter-name>springSecurityFilterChain</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/applicationContext-security.xml</param-value>
</context-param>
<welcome-file-list>
<welcome-file>redirect.jsp</welcome-file>
</welcome-file-list>
<error-page>
<error-code>403</error-code>
<location>/sinacceso.jsp</location>
</error-page>
</web-app>
context.xml :
<?xml version="1.0" encoding="UTF-8"?>
<Context antiJARLocking="true" path="/Test01"/>
dispatcher-servlet.xml:
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">
<beans>
<!-- GENERALES -->
<bean id="viewResolver"
class="org.springframework.web.servlet.view.UrlBasedViewResolver">
<property name="viewClass"
value="org.springframework.web.servlet.view.tiles2.TilesView" />
</bean>
<bean id="tilesConfigurer"
class="org.springframework.web.servlet.view.tiles2.TilesConfigurer">
<property name="definitions">
<list>
<value>/WEB-INF/tiles.xml</value>
</list>
</property>
</bean>
<bean name="/index.htm" class="paginas.index"/>
<bean name="secure/villancicos.htm" class="paginas.villancicos"/>
<bean name="secure/administracion.htm" class="paginas.administracion"/>
</beans>
applicationContext-security.xml:
<beans:beans xmlns="http://www.springframework.org/schema/security"
xmlns:beans="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:p="http://www.springframework.org/schema/p"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/security http://www.springframework.org/schema/security/spring-security-3.1.xsd">
<http>
<intercept-url pattern="/index.htm" filters="none" />
<intercept-url pattern="/secure/administracion.htm" access="ROLE_SUPERVISOR" />
<intercept-url pattern="/secure/**" access="ROLE_USER" />
<form-login />
<anonymous />
<http-basic />
<logout logout-success-url="/index.htm" />
</http>
<authentication-manager alias="myAuthenticationManager">
<authentication-provider>
<password-encoder hash="md5"/>
<user-service>
<user name="rod" password="a564de63c2d0da68cf47586ee05984d7" authorities="ROLE_SUPERVISOR, ROLE_USER, ROLE_TELLER" />
<user name="dianne" password="65d15fe9156f9c4bbffd98085992a44e" authorities="ROLE_USER,ROLE_TELLER" />
<user name="scott" password="2b58af6dddbd072ed27ffc86725d7d3a" authorities="ROLE_USER" />
<user name="peter" password="22b5c9accc6e1ba628cedc63a72d57f8" authorities="ROLE_USER" />
</user-service>
</authentication-provider>
</authentication-manager>
</beans:beans>
This application is currently using spring 2.5 with spring-security-2.0.4 (the same version from the tutorial I've been following).

Answer 1

Have you tried what the error suggests and added an alias attribute to your authentication-manager? Something like:
<authentication-manager alias="myAuthenticationManager">
<authentication-provider>
...