redis基本操作之hmset/hmget

Posted 2021-01-25

import redis.clients.jedis.Jedis;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

public class RedisUtil {
        private static Jedis redis=new Jedis("192.168.146.101",6379);
        public static DeviceInfo getdeviceid(String deviceid){
                Boolean have = redis.exists(deviceid);
                if(have){
                        List<String> list = redis.hmget(deviceid, "appplatform", "brand", "deviceStyle", "osType");
                        DeviceInfo deviceInfo = new DeviceInfo();
                        deviceInfo.setDeviceId(deviceid);
                        deviceInfo.setAppPlatform(list.get(0));
                        deviceInfo.setBrand(list.get(1));
                        deviceInfo.setDeviceStyle(list.get(2));
                        deviceInfo.setOsType(list.get(3));
                        return deviceInfo;
                }else{
                        return null;
                }
        }
        public static void setdeviceid(String devid , String platform , String brand , String deviceStyle , String osType){
                Map<String,String> map=new HashMap<String, String>();
                map.put("appplatform",platform);
                map.put("brand",brand);
                map.put("deviceStyle",deviceStyle);
                map.put("osType",osType);
                redis.hmset(devid,map);
        }
        public static String getappversion(String deviceid,String appid,String newversion){
                String version = redis.hget(deviceid, appid);
                if(version!=null){
                        return version;
                }else{
                        redis.hset(deviceid,appid,newversion);
                        return newversion;
                }
        }
}

--redis-cli -h localhost -p 6379
redis-server &
keys *
get key1
select 0
flushdb
flushall
quit
config set protected-mode no
hgetall user_0