万事第一步(导包):

    1.  <!--        Jedis 操作Redis的框架-->
    2.         <dependency>
    3.             <groupId>redis.clients</groupId>
    4.             <artifactId>jedis</artifactId>
    5.         </dependency>

    第二步封装工具类:
    image.png
    image.png

    1. package com.mhy.boot_plus.utils;
    3. import redis.clients.jedis.GeoRadiusResponse;
    4. import redis.clients.jedis.GeoUnit;
    5. import redis.clients.jedis.Jedis;
    6. import java.util.List;
    7. import java.util.Map;
    9. /**
    10.  * @author Feri
    11.  * @date 2021/12/30 14:01
    12.  * @description:TODO Java操作Redis
    13.  */
    14. public class JedisUtils {
    15.     private static Jedis jedis;
    16.     static {
    17.         //完成实例化，连接Redis服务器
    18.         jedis=new Jedis("120.27.133.194",6380);
    19.         jedis.auth("123");
    20.     }
    21.     //新增
    22.     /**
    23.      * String类型 新增*/
    24.     public static void addString(String key,String value,long seconds){
    25.         jedis.setex(key, seconds, value);
    26.     }
    27.     public static void addString(String key,String value){
    28.         jedis.set(key, value);
    29.     }
    30.     public static void addHash(String key,String field,String value){
    31.         jedis.hset(key, field, value);
    32.     }
    33.     public static void addHash(String key, Map<String,String> map){
    34.         jedis.hmset(key, map);
    35.     }
    36.     public static void addList(String key,String value){
    37.         jedis.lpush(key,value);
    38.     }
    39.     public static void addGeo(String key,double lon,double lat,String address){
    40.         jedis.geoadd(key, lon, lat, address);
    41.     }
    43.     //校验
    44.     public static boolean exists(String... keys){
    45.         return jedis.exists(keys)>0;
    46.     }
    47.     public static boolean existsHash(String key,String field){
    48.         return jedis.hexists(key, field);
    49.     }
    50.     //删除
    51.     public static void delKey(String key){
    52.         jedis.del(key);
    53.     }
    54.     public static void delHash(String key,String field){
    55.         jedis.hdel(key,field);
    56.     }
    57.     //geo操作
    58.     public static double geodist(String key,String address1,String address2){
    59.         return jedis.geodist(key, address1, address2, GeoUnit.M);
    60.     }
    61.     public static List<GeoRadiusResponse> georadius(String key, double lon, double lat, double radius){
    62.         return jedis.georadius(key,lon,lat,radius,GeoUnit.M);
    63.     }
    64.     //系统命令
    65.     public static void expire(String key,long seconds){
    66.         jedis.expire(key, seconds);
    67.     }
    68.     public static long ttl(String key){
    69.         return jedis.ttl(key);
    70.     }
    72.     public static void main(String[] args) {
    73.         //String类型
    74.         jedis.set("str2112","Hello Word");//新增或修改
    75.         System.err.println(jedis.get("str2112"));//获取
    76.         System.err.println(jedis.strlen("str2112"));//长度
    77.         //List类型
    78.         jedis.lpush("list2112","1","2","3");
    79.         jedis.rpush("list2112","a","b","c");
    80.         //321abc
    81.         System.err.println(jedis.lrange("list2112",0,jedis.llen("list2112")-1));
    82.         System.err.println(jedis.lpop("list2112"));
    83.         System.err.println(jedis.rpop("list2112"));
    84.         //Hash类型
    85.         jedis.hset("hash2112","1","www");
    86.         System.err.println(jedis.hget("hash2112","1"));
    87.         System.err.println(jedis.hexists("hash2112","1"));
    88.         //Set类型
    89.         jedis.sadd("set2112","w","e","r");
    90.         System.err.println(jedis.smembers("set2112"));
    91.         System.err.println(jedis.sismember("set2112","w"));
    92.     }
    94. }