Redis中序列化的两种实现

Jackson2JsonRedisSerializer

[
    {
        "id": "1",
        "parentId": "2",
        "content": "Node1",
        "children": null
    },
    {
        "id": null,
        "parentId": null,
        "content": null,
        "children": null
    }
]

GenericJackson2JsonRedisSerializer

[
    "java.util.ArrayList",
    [
        {
            "@class": "life.cqq.blog.common.entity.Toc",
            "id": "1",
            "parentId": "2",
            "content": "Node1",
            "children": null
        },
        {
            "@class": "life.cqq.blog.common.entity.Toc",
            "id": null,
            "parentId": null,
            "content": null,
            "children": null
        }
    ]
]

public GenericJackson2JsonRedisSerializer() {
    this((String) null);
}

public GenericJackson2JsonRedisSerializer(@Nullable String classPropertyTypeName) {

    this(new ObjectMapper());

    registerNullValueSerializer(mapper, classPropertyTypeName);

    // 下面的配置就是在序列化结果中加入实体类全限定名的配置 
    if (StringUtils.hasText(classPropertyTypeName)) {
        mapper.enableDefaultTypingAsProperty(DefaultTyping.NON_FINAL, classPropertyTypeName);
    } else {
        mapper.enableDefaultTyping(DefaultTyping.NON_FINAL, As.PROPERTY);
    }
}

public GenericJackson2JsonRedisSerializer(ObjectMapper mapper) {
    Assert.notNull(mapper, "ObjectMapper must not be null!");
    this.mapper = mapper;
}

@Bean
public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory factory) {

    // key   采用StringRedisSerializer
    // value 采用GenericJackson2JsonRedisSerializer

    RedisTemplate<String, Object> template = new RedisTemplate<>();
    // 关闭启用默认配置
    template.setEnableDefaultSerializer(false);
    // 连接工厂
    template.setConnectionFactory(factory);
    // key 序列化方式
    template.setKeySerializer(RedisSerializer.string());
    // value 序列化方式
    template.setValueSerializer(RedisSerializer.json());
    // hash key 序列化方式
    template.setHashKeySerializer(RedisSerializer.string());
    // hash value 序列化方式
    template.setHashValueSerializer(RedisSerializer.json());
    // 配置完成
    template.afterPropertiesSet();
    return template;
}