springboot2.x+shiro+redis整合填坑redis只做缓存的情况

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-cache</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-redis</artifactId>
        </dependency>

　　　　//在用使用shiro的情况下集成redis，可以带这个依赖，shiro-redis已经实现了shiro的redis缓存和session管理
　　　　//如果shiro和redis集成但是不交互，可以不引入，可以自定义
        <dependency>
            <groupId>org.crazycake</groupId>
            <artifactId>shiro-redis</artifactId>
            <version>3.1.0</version>
        </dependency>

    <!--连接池，redis依赖-->
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-pool2</artifactId>
        </dependency>

        <!--与reids缓存冲突-->
        <!--<dependency>-->
            <!--<groupId>org.springframework.boot</groupId>-->
            <!--<artifactId>spring-boot-devtools</artifactId>-->
            <!--<optional>true</optional>-->
        <!--</dependency>-->

spring:
 ...省略

  cache:
    redis:
      time-to-live: 60s 
    type: redis
  redis:
    host: 127.0.0.1
    port: 6379
    password: 123456@abc.com
    timeout: 10000
    lettuce:
      pool:
        max-idle: 10
        max-active: 10
        min-idle: 5
        max-wait: 10000
    database: 0

@Configuration
@EnableCaching //开启Springboot缓存，重要！！！
public class RedisConfig extends CachingConfigurerSupport {
    @Resource
    private LettuceConnectionFactory lettuceConnectionFactory;
    private Duration timeToLive = Duration.ofSeconds(60); 

    @Bean //在没有指定缓存Key的情况下，key生成策略
    public KeyGenerator keyGenerator() {
        return new KeyGenerator() {
            @Override
            public Object generate(Object target, Method method, Object... params) {
                StringBuffer sb = new StringBuffer();
                sb.append(target.getClass().getName());
                sb.append(method.getName());
                for (Object obj : params) {
                    sb.append(obj.toString());
                }
                return sb.toString();
            }
        };
    }

    // 缓存管理器 使用Lettuce，和jedis有很大不同
    @Bean
    public CacheManager cacheManager() {
        //关键点，spring cache的注解使用的序列化都从这来，没有这个配置的话使用的jdk自己的序列化，实际上不影响使用，只是打印出来不适合人眼识别
        RedisCacheConfiguration config = RedisCacheConfiguration.defaultCacheConfig()
                .serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(keySerializer()))//key序列化方式
                .serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(valueSerializer()))//value序列化方式
                .disableCachingNullValues()
                .entryTtl(timeToLive);//缓存过期时间


        RedisCacheManager.RedisCacheManagerBuilder builder = RedisCacheManager.RedisCacheManagerBuilder
                .fromConnectionFactory(lettuceConnectionFactory)
                .cacheDefaults(config)
                .transactionAware();

        return builder.build();
    }


    /**
     * RedisTemplate配置 在单独使用redisTemplate的时候 重新定义序列化方式
     */
    @Bean
    public RedisTemplate<String, Object> redisTemplate(LettuceConnectionFactory lettuceConnectionFactory) {
        // 设置序列化
        Jackson2JsonRedisSerializer<Object> jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer<Object>(
                Object.class);
        ObjectMapper om = new ObjectMapper();
        om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
        om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
        jackson2JsonRedisSerializer.setObjectMapper(om);
        // 配置redisTemplate
        RedisTemplate<String, Object> redisTemplate = new RedisTemplate<String, Object>();
        redisTemplate.setConnectionFactory(lettuceConnectionFactory);
        RedisSerializer<?> stringSerializer = new StringRedisSerializer();
        redisTemplate.setKeySerializer(stringSerializer);// key序列化
        redisTemplate.setValueSerializer(jackson2JsonRedisSerializer);// value序列化
        redisTemplate.setHashKeySerializer(stringSerializer);// Hash key序列化
        redisTemplate.setHashValueSerializer(jackson2JsonRedisSerializer);// Hash value序列化
        redisTemplate.afterPropertiesSet();
        return redisTemplate;
    }

    private RedisSerializer<String> keySerializer() {
        return new StringRedisSerializer();
    }

    private RedisSerializer<Object> valueSerializer() {
        // 设置序列化
        Jackson2JsonRedisSerializer<Object> jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer<Object>(
                Object.class);
        ObjectMapper om = new ObjectMapper();
        om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
        om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
        jackson2JsonRedisSerializer.setObjectMapper(om);
        return jackson2JsonRedisSerializer;

        //或者使用GenericJackson2JsonRedisSerializer
        //return new GenericJackson2JsonRedisSerializer();
    }

}

@CacheConfig(cacheNames = "user")
public interface UserService {
    @Cacheable(key = "'userName'.concat(#userName)")
    User findByUserName(String userName);   
}

public class MyShiroRealm extends AuthorizingRealm {

    @Resource
    @Lazy //就是这里，必须延时加载，根本原因是bean实例化的顺序上，shiro的bean必须要先实例化，否则@Cacheable注解无效，理论上可以用@Order控制顺序
    private UserService userService;

    //权限信息，包括角色以及权限
    @Override
    protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principals) {
      略
    }

    /*主要是用来进行身份认证的，也就是说验证用户输入的账号和密码是否正确。*/
    @Override
    protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token)
            throws AuthenticationException {
      略
    }

}

    @JsonDeserialize(using = LocalDateTimeDeserializer.class)
    @JsonSerialize(using = LocalDateTimeSerializer.class)
    @DateTimeFormat(pattern = "yyyy-MM-dd HH:mm:ss")
    //格式化前台页面收到的json时间格式，不指定的话会变成缺省的"yyyy-MM-dd'T'HH:mm:ss"
    @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss")
    private LocalDateTime createTime;//创建时间
    @JsonDeserialize(using = LocalDateDeserializer.class)
    @JsonSerialize(using = LocalDateSerializer.class)
    @DateTimeFormat(pattern = "yyyy-MM-dd")
    @JsonFormat(pattern = "yyyy-MM-dd")
    private LocalDate expiredDate;//过期日期