code: public boolean set(String field, String value) {
  		boolean result = false;
  		if(value == null)return false;
  		//返回值（1:新字段被设置,0:已经存在值被更新）
  		try {
  			result = getJedisCommands(groupName).hset(key, field, value) >= 0;
  			//设置超时时间
  			if(result)setExpireIfNot(expireTime);
  			return result;
  		} finally {
  			getJedisProvider(groupName).release();
  		}
  	}
docs: 设置ç
  
  @param field
  @param value
  @return