shirt SAAS 系统

Shiro结合redis的统一会话管理

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<dependency> 
    <groupId>org.crazycake</groupId> 
    <artifactId>shiro-redis</artifactId> 
    <version>3.0.0</version>
  </dependency>

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自定义shiro会话管理器

自定义sessionManager

获得sessioniD。 头信息中具有sessionid * 请求头：Authorization： sessionid

package cn.itcast.shiro.session;

        import org.apache.shiro.web.servlet.ShiroHttpServletRequest;
        import org.apache.shiro.web.session.mgt.DefaultWebSessionManager;
        import org.apache.shiro.web.util.WebUtils;
        import org.springframework.util.StringUtils;

        import javax.servlet.ServletRequest;
        import javax.servlet.ServletResponse;
        import java.io.Serializable;

/**
 * 自定义的sessionManager
 */
public class CustomSessionManager extends DefaultWebSessionManager {


    /**
     * 头信息中具有sessionid
     *      请求头：Authorization： sessionid
     *
     * 指定sessionId的获取方式
     */
    protected Serializable getSessionId(ServletRequest request, ServletResponse response) {

        //获取请求头Authorization中的数据
        String id = WebUtils.toHttp(request).getHeader("Authorization");
        if(StringUtils.isEmpty(id)) {
            //如果没有携带，生成新的sessionId
            return super.getSessionId(request,response);
        }else{
            //返回sessionId；
            request.setAttribute(ShiroHttpServletRequest.REFERENCED_SESSION_ID_SOURCE, "header");
            request.setAttribute(ShiroHttpServletRequest.REFERENCED_SESSION_ID, id);
            request.setAttribute(ShiroHttpServletRequest.REFERENCED_SESSION_ID_IS_VALID, Boolean.TRUE);
            return id;
        }
    }
}

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配置Shiro基于redis的会话管理

在Shiro配置类 cn.itcast.shiro.ShiroConfiguration

配置 1. 配置shiro的RedisManager，通过shiro-redis包提供的RedisManager统一对redis操作

package cn.itcast.shiro;

import cn.itcast.shiro.realm.CustomRealm;
import cn.itcast.shiro.session.CustomSessionManager;
import org.apache.shiro.mgt.SecurityManager;
import org.apache.shiro.spring.security.interceptor.AuthorizationAttributeSourceAdvisor;
import org.apache.shiro.spring.web.ShiroFilterFactoryBean;
import org.apache.shiro.web.mgt.DefaultWebSecurityManager;
import org.apache.shiro.web.session.mgt.DefaultWebSessionManager;
import org.crazycake.shiro.RedisCacheManager;
import org.crazycake.shiro.RedisManager;
import org.crazycake.shiro.RedisSessionDAO;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.util.LinkedHashMap;
import java.util.Map;

@Configuration
public class ShiroConfiguration {

    //1.创建realm
    @Bean
    public CustomRealm getRealm() {
        return new CustomRealm();
    }

    //2.创建安全管理器
    @Bean
    public SecurityManager getSecurityManager(CustomRealm realm) {
        DefaultWebSecurityManager securityManager = new DefaultWebSecurityManager();
        securityManager.setRealm(realm);

        //将自定义的会话管理器注册到安全管理器中
        securityManager.setSessionManager(sessionManager());
        //将自定义的redis缓存管理器注册到安全管理器中
        securityManager.setCacheManager(cacheManager());

        return securityManager;
    }

    //3.配置shiro的过滤器工厂

    /**
     * 再web程序中，shiro进行权限控制全部是通过一组过滤器集合进行控制
     *
     */
    @Bean
    public ShiroFilterFactoryBean shiroFilter(SecurityManager securityManager) {
        //1.创建过滤器工厂
        ShiroFilterFactoryBean filterFactory = new ShiroFilterFactoryBean();
        //2.设置安全管理器
        filterFactory.setSecurityManager(securityManager);
        //3.通用配置（跳转登录页面，为授权跳转的页面）
        filterFactory.setLoginUrl("/autherror?code=1");//跳转url地址
        filterFactory.setUnauthorizedUrl("/autherror?code=2");//未授权的url
        //4.设置过滤器集合

        /**
         * 设置所有的过滤器：有顺序map
         *     key = 拦截的url地址
         *     value = 过滤器类型
         *
         */
        Map<String,String> filterMap = new LinkedHashMap<>();
        //filterMap.put("/user/home","anon");//当前请求地址可以匿名访问

        //具有某中权限才能访问
        //使用过滤器的形式配置请求地址的依赖权限
        //filterMap.put("/user/home","perms[user-home]"); //不具备指定的权限，跳转到setUnauthorizedUrl地址

        //使用过滤器的形式配置请求地址的依赖角色
        //filterMap.put("/user/home","roles[系统管理员]");

        filterMap.put("/user/**","authc");//当前请求地址必须认证之后可以访问

        filterFactory.setFilterChainDefinitionMap(filterMap);

        return filterFactory;
    }





    @Value("${spring.redis.host}")
    private String host;
    @Value("${spring.redis.port}")
    private int port;

    /**
     * 1.redis的控制器，操作redis
     */
    public RedisManager redisManager() {
        RedisManager redisManager = new RedisManager();
        redisManager.setHost(host);
        redisManager.setPort(port);
        return redisManager;
    }

    /**
     * 2.sessionDao
     */
    public RedisSessionDAO redisSessionDAO() {
        RedisSessionDAO sessionDAO = new RedisSessionDAO();
        sessionDAO.setRedisManager(redisManager());
        return sessionDAO;
    }

    /**
     * 3.会话管理器
     */
    public DefaultWebSessionManager sessionManager() {
        CustomSessionManager sessionManager = new CustomSessionManager();
        sessionManager.setSessionDAO(redisSessionDAO());
        return sessionManager;
    }

    /**
     * 4.缓存管理器
     */
    public RedisCacheManager cacheManager() {
        RedisCacheManager redisCacheManager = new RedisCacheManager();
        redisCacheManager.setRedisManager(redisManager());
        return redisCacheManager;
    }




    //开启对shior注解的支持
    @Bean
    public AuthorizationAttributeSourceAdvisor authorizationAttributeSourceAdvisor(SecurityManager securityManager) {
        AuthorizationAttributeSourceAdvisor advisor = new AuthorizationAttributeSourceAdvisor();
        advisor.setSecurityManager(securityManager);
        return advisor;
    }
}

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