redis 配置 Jackson2JsonRedisSerializer序列化
public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory factory) {
RedisTemplate<String, Object> template = new RedisTemplate<>();
// 配置连接工厂
template.setConnectionFactory(factory);
//使用Jackson2JsonRedisSerializer来序列化和反序列化redis的value值(默认使用JDK的序列化方式)
Jackson2JsonRedisSerializer jacksonSeial = new Jackson2JsonRedisSerializer(Object.class);
ObjectMapper om = new ObjectMapper();
// 指定要序列化的域,field,get和set,以及修饰符范围,ANY是都有包括private和public
om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
// 指定序列化输入的类型,类必须是非final修饰的,final修饰的类,比如String,Integer等会跑出异常
om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
jacksonSeial.setObjectMapper(om);
// 值采用json序列化
template.setValueSerializer(jacksonSeial);
//使用StringRedisSerializer来序列化和反序列化redis的key值
template.setKeySerializer(new StringRedisSerializer());
// 设置hash key 和value序列化模式
template.setHashKeySerializer(new StringRedisSerializer());
template.setHashValueSerializer(jacksonSeial);
template.afterPropertiesSet();
return template;
}
redis Pipelined批量修改数据
redisTemplate.executePipelined(new RedisCallback<Object>() {
@Override
public Object doInRedis(RedisConnection redisConnection) throws DataAccessException {
try {
for (Cart cart : cartList){
cart.setSelected(selected);
redisConnection.hSet(Key.getBytes(), (""+cart.getCommodityId()).getBytes(), objectMapper.writeValueAsString(cart).getBytes());
}
}catch (Exception e){
e.printStackTrace();
}
return null;
}
},redisTemplate.getValueSerializer());
读取数据的时候报错
HashOperations<String,String,Cart> hashOperations = redisTemplate.opsForHash();
return hashOperations.values(KEY_PREFIX + userId);