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  使用spring-data-redis的时候,其序列化工具自带:

 这些类,进行序列化,主要使用的是Jackson2JsonRedisSerializer,编码如下:

  

  @Bean    
  @SuppressWarnings({ "rawtypes", "unchecked" })
    public Jackson2JsonRedisSerializer jackson2JsonRedisSerializer() {
        Jackson2JsonRedisSerializer<Object> 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);
        return jackson2JsonRedisSerializer;
    }

    @Bean
    @SuppressWarnings("rawtypes")
    public RedisTemplate<String, String> redisTemplate(RedisConnectionFactory factory, RedisSerializer fastJson2JsonRedisSerializer) {
        StringRedisTemplate template = new StringRedisTemplate(factory);

        template.setValueSerializer(fastJson2JsonRedisSerializer);

        template.afterPropertiesSet();
        return template;
    }

但是使用jackson会有一个问题,因为我springMVC同样是使用的jackson,这样的话由于一些发送给前端的json是需要一定的处理的,如jsonIgnore之类的,这样会在进行缓存时同样处理掉,达不到缓存的目的,于是决定在spring-data-redis进行缓存时,将jackson的序列化由fastjson替换掉。

  首先需要一个RedisSerializer

public class FastJson2JsonRedisSerializer<T> implements RedisSerializer<T> {

    public static final Charset DEFAULT_CHARSET = Charset.forName("UTF-8");

    private Class<T> clazz;

    public FastJson2JsonRedisSerializer(Class<T> clazz) {
        super();
        this.clazz = clazz;
    }

    public byte[] serialize(T t) throws SerializationException {
        if (t == null) {
            return new byte[0];
        }
        return JSON.toJSONString(t, SerializerFeature.WriteClassName).getBytes(DEFAULT_CHARSET);
    }

    public T deserialize(byte[] bytes) throws SerializationException {
        if (bytes == null || bytes.length <= 0) {
            return null;
        }
        String str = new String(bytes, DEFAULT_CHARSET);

        return (T) JSON.parseObject(str, clazz);
    }

}

     此类需要实现RedisSerializer接口。

  然后set到RedisTemplate上:

  

    @Bean
    @SuppressWarnings("rawtypes")
    public RedisSerializer fastJson2JsonRedisSerializer() {
        return new FastJson2JsonRedisSerializer<Object>(Object.class);
    }

    @Bean
    @SuppressWarnings("rawtypes")
    public RedisTemplate<String, String> redisTemplate(RedisConnectionFactory factory, RedisSerializer fastJson2JsonRedisSerializer) {
        StringRedisTemplate template = new StringRedisTemplate(factory);

        template.setValueSerializer(fastJson2JsonRedisSerializer);

        template.afterPropertiesSet();
        return template;
    }

 

   结束

 

posted on 2015-12-18 10:22 大招无限 阅读(...) 评论(...) 编辑 收藏