cas+tomcat+shiro实现单点登录-4-Apache Shiro 集成Cas作为cas client端实现

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本文介绍如何通过Apache Shiro集成Cas实现单点登录功能。主要步骤包括添加Maven依赖、配置spring-shiro.xml文件、实现自定义CasRealm等。通过这些步骤可以有效地实现用户的统一认证和授权。

cas+tomcat+shiro实现单点登录-4-Apache Shiro 集成Cas作为cas client端实现

Apache Shiro 集成Cas作为cas client端实现

第一步、添加maven依赖

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　　　　 <!-- shiro依赖包 -->
        <!-- <dependency> <groupId>org.apache.shiro</groupId> <artifactId>shiro-quartz</artifactId> <version>${shiro.version}</version> </dependency> -->
        <dependency>
            <groupId>org.apache.shiro</groupId>
            <artifactId>shiro-ehcache</artifactId>
            <version>${shiro.version}</version>
        </dependency>
        <dependency>
            <groupId>org.apache.shiro</groupId>
            <artifactId>shiro-spring</artifactId>
            <version>${shiro.version}</version>
        </dependency>
        <!-- shiro-cas集成依赖包 -->
        <dependency>
            <groupId>org.apache.shiro</groupId>
            <artifactId>shiro-cas</artifactId>
            <version>${shiro.version}</version>
        </dependency>

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第二步、添加spring-shiro.xml配置文件

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<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:aop="http://www.springframework.org/schema/aop"
    xmlns:tx="http://www.springframework.org/schema/tx" xmlns:context="http://www.springframework.org/schema/context" xmlns:util="http://www.springframework.org/schema/util"
    xsi:schemaLocation="  
     http://www.springframework.org/schema/beans   
     http://www.springframework.org/schema/beans/spring-beans-3.0.xsd  
     http://www.springframework.org/schema/context   
     http://www.springframework.org/schema/context/spring-context-3.0.xsd  
     http://www.springframework.org/schema/util  
     http://www.springframework.org/schema/util/spring-util-3.0.xsd"
    default-lazy-init="true">
    <bean id="shiroFilter" class="org.apache.shiro.spring.web.ShiroFilterFactoryBean">
        <property name="securityManager" ref="securityManager" />
        <!-- 设定角色的登录链接，这里为cas登录页面的链接可配置回调地址 -->
        <property name="loginUrl" value="http://192.168.20.248:8080/cas/login?service=http://127.0.0.1:8080/nhmz/shiro-cas" />
        <property name="successUrl" value="/index.htm"></property>
        <property name="filters">
            <util:map>
                <entry key="casFilter" value-ref="casFilter" />
                <entry key="logout" value-ref="logout" />
            </util:map>
        </property>
        <property name="filterChainDefinitions">
            <value>
                /shiro-cas=casFilter
                /logout.htm=logout
                /login.htm=authc
                /xzqh/**=authc
                /tjfx/**=authc
                /gxfw/**=authc
                /xtsz/**=authc
                /region/**=authc
                /shareApi/**=authc
                /**=anon
            </value>
        </property>
    </bean>
    <!-- shiro-cas登录过滤器 -->
    <bean id="casFilter" class="org.apache.shiro.cas.CasFilter">
        <!-- 配置验证错误时的失败页面 ，这里配置为登录页面 -->
        <property name="failureUrl" value="http://192.168.20.248:8080/cas/login?service=http://127.0.0.1:8080/nhmz/shiro-cas" />
    </bean>
    <!-- 退出登录过滤器 -->
    <bean id="logout" class="org.apache.shiro.web.filter.authc.LogoutFilter">
        <property name="redirectUrl" value="http://192.168.20.248:8080/cas/logout?service=http://127.0.0.1:8080/nhmz/index.htm" />
    </bean>

   <!-- 自定义casRealm -->
    <bean id="casRealm" class="com.ld.nhmz.shiro.MzCasRealm">
        <!-- <property name="defaultRoles" value="ROLE_USER" /> -->
        <!-- 配置cas服务器地址 -->
        <property name="casServerUrlPrefix" value="http://192.168.20.248:8080/cas" />
        <!-- 客户端的回调地址设置，必须和上面的shiro-cas过滤器casFilter拦截的地址一致 -->
        <property name="casService" value="http://127.0.0.1:8080/nhmz/shiro-cas" />
    </bean>

    <!--缓存机制 -->
    <bean id="cacheManager" class="org.apache.shiro.cache.ehcache.EhCacheManager">
        <property name="cacheManagerConfigFile" value="classpath:ehcache-shiro.xml" />
    </bean>

    <bean id="securityManager" class="org.apache.shiro.web.mgt.DefaultWebSecurityManager">
        <property name="realm" ref="casRealm" />
        <property name="subjectFactory" ref="casSubjectFactory" />
        <property name="cacheManager" ref="cacheManager" />
    </bean>

    <!-- 如果要实现cas的remember me的功能，需要用到下面这个bean，并设置到securityManager的subjectFactory中 -->
    <bean id="casSubjectFactory" class="org.apache.shiro.cas.CasSubjectFactory" />

    <bean id="lifecycleBeanPostProcessor" class="org.apache.shiro.spring.LifecycleBeanPostProcessor" />

    <bean class="org.springframework.beans.factory.config.MethodInvokingFactoryBean">
        <property name="staticMethod" value="org.apache.shiro.SecurityUtils.setSecurityManager" />
        <property name="arguments" ref="securityManager" />
    </bean>
</beans>

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这里由于前端的每一个操作shiro都会做登录和权限认证，所以上面配置添加了缓存机制

所以在classpath目录下还要添加缓存而配置文件ehcache-shiro.xml，配置如下：

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<?xml version="1.1" encoding="UTF-8"?>
<ehcache name="shirocache">

    <diskStore path="java.io.tmpdir"/>

     <defaultCache
        maxElementsInMemory="2000"
        eternal="false"
        timeToIdleSeconds="120"
        timeToLiveSeconds="120"
        overflowToDisk="true"
        />
        
<!--     <cache name="diskCache"
           maxEntriesLocalHeap="2000"
           eternal="false"
           timeToIdleSeconds="300"
           timeToLiveSeconds="0"
           overflowToDisk="false"
           statistics="true">
    </cache> -->
    
    <cache name="passwordRetryCache"
           maxElementsInMemory="2000"
           eternal="false"
           timeToIdleSeconds="300"
           timeToLiveSeconds="0"
           overflowToDisk="false"
           >
    </cache>

    <cache name="authorizationCache"
           maxElementsInMemory="2000"
           eternal="false"
           timeToIdleSeconds="1800"
           timeToLiveSeconds="0"
           overflowToDisk="false"
           >
    </cache>

    <cache name="authenticationCache"
           maxElementsInMemory="2000"
           eternal="false"
           timeToIdleSeconds="1800"
           timeToLiveSeconds="0"
           overflowToDisk="false"
           >
    </cache>

    <cache name="shiro-activeSessionCache"
           maxElementsInMemory="2000"
           eternal="false"
           timeToIdleSeconds="1800"
           timeToLiveSeconds="0"
           overflowToDisk="false"
           >
    </cache>
</ehcache>

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第三步、添加<bean id="casRealm" class="com.ld.nhmz.shiro.MzCasRealm">配置的自定义实现类

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package com.ld.nhmz.shiro;

import java.util.List;

import org.apache.shiro.authc.AuthenticationException;
import org.apache.shiro.authc.AuthenticationInfo;
import org.apache.shiro.authc.AuthenticationToken;
import org.apache.shiro.authz.AuthorizationInfo;
import org.apache.shiro.authz.SimpleAuthorizationInfo;
import org.apache.shiro.cas.CasRealm;
import org.apache.shiro.subject.PrincipalCollection;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.transaction.annotation.Transactional;

import com.ld.nhmz.ebo.SusRoleEntity;
import com.ld.nhmz.ebo.SusUserEntity;
import com.ld.nhmz.service.SusRolePermissionService;
import com.ld.nhmz.service.SusRoleService;
import com.ld.nhmz.service.SusUserService;

//@Service
@SuppressWarnings("deprecation")
@Transactional(value = "nhmzTM")
public class MzCasRealm extends CasRealm {

    @Autowired
    private SusUserService userService;

    @Autowired
    private SusRolePermissionService rolePermissionService;

    @Autowired
    private SusRoleService roleService;

    /**
     * 授权访问控制，用于对用户进行的操作进行人证授权，证明该用户是否允许进行当前操作，如访问某个链接，某个资源文件等
     */
    @Override
    protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principals) {
        String username = (String) principals.getPrimaryPrincipal();
        SusUserEntity user = userService.findByUsername(username);

        if (user != null) {
            SimpleAuthorizationInfo authorizationInfo = new SimpleAuthorizationInfo();

            // 设置用户的角色
            String roleId = userService.getRoleIdFromUserId(user.getId());
            SusRoleEntity roleEntity = roleService.getRole(roleId);
            if (null != roleEntity)
                authorizationInfo.addRole(roleEntity.getRolecode());

            // 设置用户对应的角色的权限集合
            List<String> permissons;
            try {
                permissons = rolePermissionService.getPermissionIds2(roleId);
                for (String permission : permissons) {
                    authorizationInfo.addStringPermission(permission);
                }
            } catch (Exception e) {
                e.printStackTrace();
            }

            return authorizationInfo;
        }
        return null;

    }

    /**
     * 验证用户身份
     */
    @Override
    protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) throws AuthenticationException {
        return super.doGetAuthenticationInfo(token);
    }

    @Override
    public void clearCachedAuthorizationInfo(PrincipalCollection principals) {
        super.clearCachedAuthorizationInfo(principals);
    }

    @Override
    public void clearCachedAuthenticationInfo(PrincipalCollection principals) {
        super.clearCachedAuthenticationInfo(principals);
    }

    @Override
    public void clearCache(PrincipalCollection principals) {
        super.clearCache(principals);
    }

    public void clearAllCachedAuthorizationInfo() {
        getAuthorizationCache().clear();
    }

    public void clearAllCachedAuthenticationInfo() {
        getAuthenticationCache().clear();
    }

    public void clearAllCachedKickoutInfo() {

    }

    public void clearAllCache() {
        clearAllCachedAuthenticationInfo();
        clearAllCachedAuthorizationInfo();
        clearAllCachedKickoutInfo();
    }
}

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第四步、将spring-shiro.xml配置文件导入到spring的配置文件中，注意配置文件间的相对路径

第五步、web.xml中添加shiro过滤器

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<!-- shiro filter的名字是shiroFilter,那么在spring的配置文件中要有一个名字为shiroFilter的bean -->
    <filter>
        <filter-name>shiroFilter</filter-name>
        <filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
        <init-param>
            <param-name>targetFilterLifecycle</param-name>
            <param-value>true</param-value>
        </init-param>
    </filter>

    <filter-mapping>
        <filter-name>shiroFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

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以上步骤完成，shiro集成cas的步骤就完成了，实现了单点登录和单点注销登录。

分类: CAS

标签: cas tomcat shiro

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