【Java】java | CacheManager | redisCacheManager

一、说明

        1、查询增加缓存,使用@Cacheable注解

        2、项目中已经用到了ehcache,现在需求是两个都用

二、备份配置

1、redisConfig增加代码

@Bean("redisCacheManage")
    @Primary
    public CacheManager redisCacheManager(RedisConnectionFactory factory) {
        Map configurationMap = MapUtil.newHashMap();
        RedisCacheConfiguration config = RedisCacheConfiguration.defaultCacheConfig()
                .entryTtl(Duration.ofMinutes(60))
                .serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(keySerializer()))
                .serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(valueSerializer()))
                .disableCachingNullValues();
        return RedisCacheManager.builder(factory)
                .initialCacheNames(configurationMap.keySet())
                .withInitialCacheConfigurations(configurationMap)
                .cacheDefaults(config)
                .build();
    }

    private RedisSerializer keySerializer() {
        return new StringRedisSerializer();
    }

    private RedisSerializer valueSerializer() {
        Jackson2JsonRedisSerializer jackson2JsonRedisSerializer =
                new Jackson2JsonRedisSerializer<>(Object.class);
        ObjectMapper objectMapper = new ObjectMapper();
        objectMapper.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);

        // 此项必须配置,否则如果序列化的对象里边还有对象,会报如下错误:
        //     java.lang.ClassCastException: java.util.LinkedHashMap cannot be cast to XXX
        objectMapper.activateDefaultTyping(
                objectMapper.getPolymorphicTypeValidator(),
                ObjectMapper.DefaultTyping.NON_FINAL,
                JsonTypeInfo.As.PROPERTY);
        // 旧版写法:
        // objectMapper.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL, JsonTypeInfo.As.PROPERTY);

        jackson2JsonRedisSerializer.setObjectMapper(objectMapper);

        return jackson2JsonRedisSerializer;
    } 
  

2、直接使用

1)缓存

@Cacheable(key ="'method_' + #tenantId + '_' + #bo.toString()", unless = "#result == null", cacheManager = "redisCacheManage", cacheNames = "api")

说明1:cacheNames其实是个前缀,也可以理解成分组的概念;方便手动删除时,根据前缀删除

2)示例截图

3)redis存储结果截图

【Java】java | CacheManager | redisCacheManager_第1张图片

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