Jedis中hset散列相关操作

Redis的是kv数据库，对于value可以是以下几种情况

哈希应用：在开发过程中，有些字段是临时的或者是开发后期才想到的，就直接添加进去（在设计开发过程中没有想好，比如小明在上学前没有学校字段，但上学后有学校字段） 可以利用哈希扩展。

/* * hashset * 对于某些不定项操作可以利用哈希扩展 */String userKey="user12";jedis.hset(userKey, "name", "jim");jedis.hset(userKey, "age", "12");jedis.hset(userKey, "phone", "12345678901");print(12,jedis.hget(userKey,"name"));print(13,jedis.hgetAll(userKey));jedis.hdel(userKey,"phone");//删除print(14,jedis.hgetAll(userKey));print(15,jedis.hkeys(userKey));//获取所有keyprint(16,jedis.hvals(userKey));//获取所有valuesprint(17,jedis.hexists(userKey, "email"));//是否存在print(18,jedis.hexists(userKey, "age"));jedis.hsetnx(userKey, "school", "123");//不存在字段 添加，存在不改变jedis.hsetnx(userKey, "name", "Ben");print(19,jedis.hgetAll(userKey));

12, jim13, {name=jim, phone=12345678901, age=12}14, {name=jim, age=12}15, [name, age]16, [jim, 12]17, false18, true19, {name=jim, school=123, age=12}