cas 集成springsecurity

要将CAS集成到Spring Security中，需要遵循以下步骤：

1. 在pom.xml中添加依赖项：

<dependency>
    <groupId>org.apereo.cas</groupId>
    <artifactId>cas-server-support-security</artifactId>
    <version>${cas.version}</version>
</dependency>

2. 在Spring Security的配置文件中添加以下内容：

<security:http entry-point-ref="casEntryPoint">
    <security:intercept-url pattern="/secure/**" access="ROLE_USER"/>
    <security:custom-filter ref="casAuthenticationFilter" after="CAS_FILTER"/>
</security:http>

<bean id="casEntryPoint"
      class="org.springframework.security.cas.web.CasAuthenticationEntryPoint">
    <property name="loginUrl" value="https://CAS_SERVER/login"/>
    <property name="serviceProperties" ref="serviceProperties"/>
</bean>

<bean id="serviceProperties" class="org.springframework.security.cas.ServiceProperties">
    <property name="service" value="https://${APP_HOST}:${APP_PORT}/j_spring_cas_security_check"/>
    <property name="sendRenew" value="false"/>
</bean>

<bean id="casAuthenticationFilter"
      class="org.springframework.security.cas.web.CasAuthenticationFilter">
    <property name="authenticationManager" ref="authenticationManager"/>
</bean>

<security:authentication-manager alias="authenticationManager">
    <security:authentication-provider ref="casAuthenticationProvider"/>
</security:authentication-manager>

<bean id="casAuthenticationProvider"
      class="org.springframework.security.cas.authentication.CasAuthenticationProvider">
    <property name="userDetailsService" ref="userDetailsService"/>
    <property name="serviceProperties" ref="serviceProperties"/>
    <property name="ticketValidator">
        <bean class="org.jasig.cas.client.validation.Cas20ServiceTicketValidator">
            <constructor-arg value="https://CAS_SERVER"/>
        </bean>
    </property>
    <property name="key" value="casAuthenticationProvider"/>
</bean>

<bean id="userDetailsService"
      class="org.springframework.security.core.userdetails.jdbc.JdbcDaoImpl">
    <property name="dataSource" ref="dataSource"/>
    <property name="usersByUsernameQuery">
        <value>SELECT username,password,enabled FROM users WHERE username=?</value>
    </property>
    <property name="authoritiesByUsernameQuery">
        <value>SELECT username, role FROM user_roles WHERE username=?</value>
    </property>
</bean>

3. 在CAS服务器上配置应用程序的服务：

{
    "@class" : "org.apereo.cas.services.RegexRegisteredService",
    "serviceId" : "https://${APP_HOST}:${APP_PORT}/j_spring_cas_security_check",
    "name" : "My Application",
    "id" : 1,
    "evaluationOrder" : 10,
    "attributeReleasePolicy": {
        "@class": "org.apereo.cas.services.ReturnAllAttributeReleasePolicy"
    }
}

这些步骤将使CAS和Spring Security集成在一起，从而实现基于CAS的身份验证和授权。