Spring Security与 CAS集成
引入依赖
打开pox.xml
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-cas</artifactId>
<version>4.1.0.RELEASE</version>
</dependency>
<dependency>
<groupId>org.jasig.cas.client</groupId>
<artifactId>cas-client-core</artifactId>
<version>3.3.3</version>
<exclusions>
<exclusion>
<groupId>org.slf4j</groupId>
<artifactId>log4j-over-slf4j</artifactId>
</exclusion>
</exclusions>
</dependency>
修改spring-security.xml
修改spring-security.xml
<?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.xsd
http://www.springframework.org/schema/security http://www.springframework.org/schema/security/spring-security.xsd">
<!-- entry-point-ref 入口点引用 -->
<http use-expressions="false" entry-point-ref="casProcessingFilterEntryPoint">
<intercept-url pattern="/**" access="ROLE_USER"/>
<csrf disabled="true"/>
<!-- custom-filter为过滤器， position 表示将过滤器放在指定的位置上，before表示放在指定位置之前 ，after表示放在指定的位置之后 -->
<custom-filter ref="casAuthenticationFilter" position="CAS_FILTER" />
<custom-filter ref="requestSingleLogoutFilter" before="LOGOUT_FILTER"/>
<custom-filter ref="singleLogoutFilter" before="CAS_FILTER"/>
</http>
<!-- CAS入口点 开始 -->
<beans:bean id="casProcessingFilterEntryPoint" class="org.springframework.security.cas.web.CasAuthenticationEntryPoint">
<!-- 单点登录服务器登录URL -->
<beans:property name="loginUrl" value="http://localhost:9100/cas/login"/>
<beans:property name="serviceProperties" ref="serviceProperties"/>
</beans:bean>
<beans:bean id="serviceProperties" class="org.springframework.security.cas.ServiceProperties">
<!--service 配置自身工程的根地址+/login/cas -->
<beans:property name="service" value="http://localhost:9003/login/cas"/>
</beans:bean>
<!-- CAS入口点 结束 -->
<!-- 认证过滤器 开始 -->
<beans:bean id="casAuthenticationFilter" class="org.springframework.security.cas.web.CasAuthenticationFilter">
<beans:property name="authenticationManager" ref="authenticationManager"/>
</beans:bean>
<!-- 认证管理器 -->
<authentication-manager alias="authenticationManager">
<authentication-provider ref="casAuthenticationProvider">
</authentication-provider>
</authentication-manager>
<!-- 认证提供者 -->
<beans:bean id="casAuthenticationProvider" class="org.springframework.security.cas.authentication.CasAuthenticationProvider">
<beans:property name="authenticationUserDetailsService">
<beans:bean class="org.springframework.security.core.userdetails.UserDetailsByNameServiceWrapper">
<beans:constructor-arg ref="userDetailsService" />
</beans:bean>
</beans:property>
<beans:property name="serviceProperties" ref="serviceProperties"/>
<!-- ticketValidator 为票据验证器 -->
<beans:property name="ticketValidator">
<beans:bean class="org.jasig.cas.client.validation.Cas20ServiceTicketValidator">
<beans:constructor-arg index="0" value="http://localhost:9100/cas"/>
</beans:bean>
</beans:property>
<beans:property name="key" value="an_id_for_this_auth_provider_only"/>
</beans:bean>
<!-- 认证类 -->
<beans:bean id="userDetailsService" class="cn.itcast.demo.service.UserDetailServiceImpl"/>
<!-- 认证过滤器 结束 -->
<!-- 单点登出 开始 -->
<beans:bean id="singleLogoutFilter" class="org.jasig.cas.client.session.SingleSignOutFilter"/>
<beans:bean id="requestSingleLogoutFilter" class="org.springframework.security.web.authentication.logout.LogoutFilter">
<beans:constructor-arg value="http://localhost:9100/cas/logout?service=http://www.baidu.com"/>
<beans:constructor-arg>
<beans:bean class="org.springframework.security.web.authentication.logout.SecurityContextLogoutHandler"/>
</beans:constructor-arg>
<beans:property name="filterProcessesUrl" value="/logout/cas"/>
</beans:bean>
<!-- 单点登出 结束 -->
</beans:beans>
创建UserDetailsServiceImpl
3）创建UserDetailsServiceImpl
package cn.itcast.demo.service;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.authority.SimpleGrantedAuthority;
import org.springframework.security.core.userdetails.User;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
public class UserDetailServiceImpl implements UserDetailsService {
@Override
public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
System.out.println("经过认证类:"+username);
List<GrantedAuthority> authorities=new ArrayList();
authorities.add(new SimpleGrantedAuthority("ROLE_USER"));
return new User(username,"",authorities);
}
}
这个类的主要作用是在登陆后得到用户名，可以根据用户名查询角色或执行一些逻辑。
获取登录名
1.获取登录名
我们在处理后端逻辑需要获得登录名，那么如何获取单点登录的用户名呢? 其实和我们之前获得用户名的方式是完全相同的，我们下面来做个测试。web.xml 添加springmvc
<servlet>
<servlet-name>springmvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!-- 指定加载的配置文件 ，通过参数contextConfigLocation加载-->
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:springmvc.xml</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>创建springmvc.xml
2.创建springmvc.xml
<context:component-scan base-package="songzixian.com" />
<mvc:annotation-driven />创建UserController
3.创建UserController
@RestController
public class UserController {
@RequestMapping("/findLoginUser")
public void findLoginUser(){
String name = SecurityContextHolder.getContext().getAuthentication().getName();
System.out.println(name);
}
}
地址栏输入http://localhost:9003/findLoginUser.do 即可在控制台看到输出的登录名
退出登录
1.修改spring-security.xml
<beans:bean id="requestSingleLogoutFilter" class="org.springframework.security.web.authentication.logout.LogoutFilter">
<beans:constructor-arg value="http://localhost:9100/cas/logout?service=http://localhost:9003/index2.html"/>
<beans:constructor-arg>
<beans:bean class="org.springframework.security.web.authentication.logout.SecurityContextLogoutHandler"/>
</beans:constructor-arg>
<beans:property name="filterProcessesUrl" value="/logout/cas"/>
</beans:bean>
在页面上添加链接
<a href="/logout/cas">退出登录</a>
创建index2.html,将index2.html设置为可匿名访问
<http pattern="/index2.html" security="none"></http>