How SpringBoot integrates Redis

Architecture

Solution

Use redis centralized storage to realize distributed cluster sharing of user information. Here we use a third party Open source plug-in crazycake is implemented, pom.xml is introduced:

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>
<dependency>
    <groupId>org.crazycake</groupId>
    <artifactId>shiro-redis</artifactId>
    <version>3.2.3</version>
</dependency>

Configuration application.properties:

# Redis
# 数据库索引（默认为0）
redis.database=0
# 服务器地址 变更为自己的
redis.host=127.0.0.1
# 服务器连接端口
redis.port=6379
# 服务器连接密码，如果不设置密码注释掉即可
# redis.password=
# 连接超时时间（毫秒）
redis.timeout=30000

OriginalcrazycakeThe plug-in has implemented RedisManager, but the parameters cannot be configured. Here we need to rewrite it ourselves:

public class RedisManager extends WorkAloneRedisManager implements IRedisManager {

    private RedisProperties redis;

    private JedisPool jedisPool;

    public RedisManager(RedisProperties redis) {
        this.redis = redis;
    }

    private void init() {
        synchronized(this) {
            if (this.jedisPool == null) {
                this.jedisPool = new JedisPool(this.getJedisPoolConfig(), redis.getHost(), redis.getPort(),
                        redis.getTimeout(), redis.getPassword(), redis.getDatabase());
            }
        }
    }

    @Override
    protected Jedis getJedis() {
        if (this.jedisPool == null) {
            this.init();
        }
        return this.jedisPool.getResource();
    }
}

Parameter configuration RedisProperties:

@Data
@ConfigurationProperties(prefix = "redis")
public class RedisProperties {

    private String host;
    private int port;
    private int timeout;
    private String password;
    private int database;
}

Configuration ShiroConfig：

/**
 * Shiro权限配置
 * 一定要配置 @Configuration 和 @EnableConfigurationProperties 注解
 */
@Configuration
@EnableConfigurationProperties({RedisProperties.class})
public class ShiroConfig {

    private RedisProperties redis;

    public ShiroConfig(RedisProperties redis) {
        this.redis = redis;
    }

    @Bean
    public UserRealm userRealm() {
        return new UserRealm();
    }

    @Bean
    public ShiroFilterFactoryBean shiroFilterFactoryBean (SecurityManager securityManager) {
        ShiroFilterFactoryBean shiroFilterFactoryBean = new ShiroFilterFactoryBean();
        shiroFilterFactoryBean.setSecurityManager(securityManager);
        shiroFilterFactoryBean.setLoginUrl("/index.html");
        shiroFilterFactoryBean.setUnauthorizedUrl("/403");
        // 拦截器
        Map<String, String> filterChainDefinitionMap = new LinkedHashMap<>();
        /**
         * 静态文件
         */
        filterChainDefinitionMap.put("/file/**","anon");
        /**
         * 登录注册
         */
        filterChainDefinitionMap.put("/register.shtml","anon");
        filterChainDefinitionMap.put("/login.shtml","anon");
        /**
         * 管理后台
         */
        filterChainDefinitionMap.put("/sys/**", "roles[admin]");
        filterChainDefinitionMap.put("/**", "authc");
        shiroFilterFactoryBean.setFilterChainDefinitionMap(filterChainDefinitionMap);
        return shiroFilterFactoryBean;
    }

    @Bean
    public SessionsSecurityManager securityManager() {
        DefaultWebSecurityManager securityManager = new DefaultWebSecurityManager();
        securityManager.setRealm(userRealm());
        securityManager.setCacheManager(cacheManager());
        securityManager.setSessionManager(sessionManager());
        return securityManager;
    }
    @Bean
    public DefaultWebSessionManager sessionManager() {
        DefaultWebSessionManager sessionManager = new DefaultWebSessionManager();
        sessionManager.setSessionIdUrlRewritingEnabled(false);
        sessionManager.setSessionDAO(redisSessionDAO());
        return sessionManager;
    }
    @Bean
    public ShiroDialect shiroDialect(){
        return new ShiroDialect();
    }

    /**
     * cacheManager 缓存 redis实现
     * @return
     */
    public RedisCacheManager cacheManager() {
        RedisCacheManager redisCacheManager = new RedisCacheManager();
        redisCacheManager.setRedisManager(redisManager());
        return redisCacheManager;
    }

    /**
     * 配置shiro redisManager
     * @return
     */
    public RedisManager redisManager() {
        RedisManager redisManager = new RedisManager(redis);
        return redisManager;
    }

    /**
     * RedisSessionDAO shiro sessionDao层的实现
     * 原理就是重写 AbstractSessionDAO
     * 有兴趣的小伙伴自行阅读源码
     */
    @Bean
    public RedisSessionDAO redisSessionDAO() {
        RedisSessionDAO redisSessionDAO = new RedisSessionDAO();
        redisSessionDAO.setRedisManager(redisManager());
        return redisSessionDAO;
    }

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