Não estou conseguindo configurar dá esse erro:Estou o dia inteiro quebrando a cabeça, mas não acho uma solução =(
ERROR ContextLoader:177 - Context initialization failed
org.springframework.beans.factory.BeanDefinitionStoreException: Line 7 in XML document from ServletContext resource [/WEB-INF/applicationContext-security.xml] is invalid; nested exception is org.xml.sax.SAXParseException: Document root element "beans", must match DOCTYPE root "null".
org.xml.sax.SAXParseException: Document root element "beans", must match DOCTYPE root "null".
Meu web.xml está assim:
[code]<?xml version="1.0" encoding="UTF-8"?>
…
<context-param>
    <param-name>log4jConfigLocation</param-name>
    <param-value>/WEB-INF/classes/log4j.properties</param-value>
</context-param>	
<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>
<!--
  - Loads the root application context of this web app at startup.
  - The application context is then available via
  - WebApplicationContextUtils.getWebApplicationContext(servletContext).
-->
<listener>
	<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!--
  - Publishes events for session creation and destruction through the application
  - context. Optional unless concurrent session control is being used.
  -->
<listener>
  <listener-class>org.springframework.security.ui.session.HttpSessionEventPublisher</listener-class>
</listener>
<listener>
    <listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>
</listener>    
[/code]
applicationContext-security.xml
<?xml version="1.0" encoding="UTF-8"?>
<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"
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
                        http://www.springframework.org/schema/security http://www.springframework.org/schema/security/spring-security-2.0.1.xsd">
	<global-method-security secured-annotations="enabled">
		<!-- AspectJ pointcut expression that locates our "post" method and applies security that way
		<protect-pointcut expression="execution(* bigbank.*Service.post*(..))" access="ROLE_TELLER"/>
		-->
	</global-method-security>
    <http auto-config="true">
        <intercept-url pattern="/secure/extreme/**" access="ROLE_SUPERVISOR"/>
        <intercept-url pattern="/secure/**" access="IS_AUTHENTICATED_REMEMBERED" />
		<!-- Disable web URI authorization, as we're using <global-method-security> and have @Secured the services layer instead
        <intercept-url pattern="/listAccounts.html" access="IS_AUTHENTICATED_REMEMBERED" />
        <intercept-url pattern="/post.html" access="ROLE_TELLER" />
        -->
        <intercept-url pattern="/**" access="IS_AUTHENTICATED_ANONYMOUSLY" />
<!--
    Uncomment to enable X509 client authentication support
        <x509 /> 
-->
        <!-- All of this is unnecessary if auto-config="true"
        <form-login />
        <anonymous />
        <http-basic />
        <logout />
        <remember-me /> -->
        <!-- Uncomment to limit the number of sessions a user can have
        <concurrent-session-control max-sessions="1" exception-if-maximum-exceeded="true"/>
		-->		
    </http>
    <!--
    Usernames/Passwords are
        rod/koala
        dianne/emu
        scott/wombat
        peter/opal
    -->
    <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>
</beans>