我的要求是提供：
基于用户ID密码的身份验证。
开放式基于身份的身份验证
基于url的身份验证（这是我们的自定义sso实现）
在同一个项目中。
我曾尝试将Spring Security 作为插件插入到现有项目中（为简单起见，将代码剥离）：

<?xml version="1.0" encoding="UTF-8"?>
<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"
    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">

    <http auto-config="false">
        <remember-me user-service-ref="rememberMeUserService" key="some custom key" /> <!-- TODO: Key made for testing reasons.... -->
        <intercept-url pattern='/mainApplication/Main screen.html' access="ROLE_ADMIN"/>
        <intercept-url pattern='/**' filters="none"/> <!-- Allow entry to login screen -->
        <openid-login authentication-failure-url="/Login.html?error=true" default-target-url="/mainApplication/Main screen.html" user-service-ref="openIdUserService"/>
        <form-login login-page="/Login.html" authentication-failure-url="/Login.html?error=true" always-use-default-target="true" default-target-url="/mainApplication/Main screen.html"/>
    </http>

    <beans:bean id="rememberMeUserService" class="mypackage.CustomUserService">
        <beans:property name="usersService" ref="usersService"></beans:property>
    </beans:bean>

    <!-- Common login shared entry-point for both Form and OpenID based logins -->    
    <beans:bean id="entryPoint" class="org.springframework.security.ui.webapp.AuthenticationProcessingFilterEntryPoint">
        <beans:property name="loginFormUrl" value="/Login.html" />
    </beans:bean>
    <authentication-manager alias="authenticationManager"/>

    <beans:bean id="MyCustomAuthenticationProvider" class="mypackage.CustomAuthenticationProvider">
        <custom-authentication-provider />
        <beans:property name="usersService" ref="usersService"></beans:property>
    </beans:bean>

    <beans:bean id="openIdAuthenticationProvider" class="org.springframework.security.providers.openid.OpenIDAuthenticationProvider">
        <custom-authentication-provider />
        <beans:property name="userDetailsService" ref="openIdUserService"/>
    </beans:bean>

    <beans:bean id="openIdUserService" class="mypackage.OpenIDUserDetailsService">
        <beans:property name="usersService" ref="usersService"/>
    </beans:bean>

    <!-- Great, now i want to include SSO based sign on -->
    <!-- need to intercept a url of the form :   /myApp/customLogin/<key> where <key> is my token key   -->

</beans:beans>

如上所述，我需要跟踪表单的url:/myapp/customlogin/12345，其中1235是我们最初使用的令牌密钥（为了简单起见，代码被剥离）

<servlet-mapping>
    <servlet-name>mySSOCapture</servlet-name>
    <url-pattern>/myApp/*</url-pattern>
</servlet-mapping>
<servlet-mapping>
    <servlet-name>MyServlet</servlet-name>
    <url-pattern>/MyServlet</url-pattern>
</servlet-mapping>

我应该在这里做些什么来启用Spring Security 来帮助我管理第三个身份验证方案？
一个必然的问题是：我可以在同一个项目中有许多身份验证提供者吗？如果是，那么如何将它们与不同的功能相匹配（例如一个提供基于url的身份验证，一个提供匿名身份验证等等）？