Spring Boot 11 : Redis

pom.xml

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

使用 RedisTemplate

/**
 * Redis 配置
 *
 * @Author YangXuyue
 * @Date 2018/08/02 21:57
 */
@Configuration
@EnableCaching
@AutoConfigureAfter(RedisAutoConfiguration.class)
public class RedisConfig extends CachingConfigurerSupport {

    /**
     * 设置RedisCacheManager。在配置 CacheManager 的方法中，也可以配置缓存默认的过期时间。
     *
     * @param redisTemplate
     * @return
     * @Author YangXuyue
     * @Date 2018/08/09 07:48
     */
    @Bean
    public CacheManager cacheManager(RedisTemplate redisTemplate) {
        RedisCacheManager cacheManager = new RedisCacheManager(redisTemplate);
        // 设置缓存过期时间，单位秒
        Map<String, Long> expiresMap = new HashMap<>();
        expiresMap.put(CacheNames.MASTER, 600L);
        expiresMap.put(CacheNames.SECOND, 600L);
        // 设置超时
        cacheManager.setExpires(expiresMap);

        // TODO 没有设置的缓存默认过期时间
        //cacheManager.setDefaultExpiration(60 * 60L);

        return cacheManager;
    }

    /**
     * 使用 StringRedisTemplate
     *
     * @param factory
     * @return
     * @Author YangXuyue
     * @Date 2018/08/09 07:48
     */
    @Bean
    public StringRedisTemplate stringRedisTemplate(RedisConnectionFactory factory) {
        StringRedisTemplate template = new StringRedisTemplate(factory);
        Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer<>(Object.class);

        ObjectMapper om = new ObjectMapper();
        om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
        om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
        jackson2JsonRedisSerializer.setObjectMapper(om);
        template.setValueSerializer(jackson2JsonRedisSerializer);

        template.afterPropertiesSet();

        return template;
    }

    /**
     * Redis 设置一些全局配置，比如配置主键的生产策略 KeyGenerator，如不配置会默认使用参数名作为主键。
     *
     * @return
     * @Author YangXuyue
     * @Date 2018/08/09 07:48
     */
    @Override
    @Bean
    public KeyGenerator keyGenerator() {
        return new BaseKeyGenerator();
    }

    /**
     * Redis主键生成策略
     *
     * @Author YangXuyue
     * @Date 2018/08/09 07:48
     */
    private class BaseKeyGenerator implements KeyGenerator {
        @Override
        public Object generate(Object target, Method method, Object... params) {
            // 目标Object的名称+方法名+Params各个元素名称
            StringBuilder sb = new StringBuilder();
            sb.append(target.getClass().getSimpleName());
            sb.append(".").append(method.getName());
            for (Object obj : params) {
                if (null != obj) {
                    sb.append(obj.toString());
                }
            }
            return sb.toString();
        }
    }

}