Linux_Redis数据库_Jedis

最新推荐文章于 2025-05-26 17:06:58 发布

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本文详细介绍Jedis客户端在Java中连接和操作Redis的方法，包括基本的字符串、列表、哈希、集合、有序集合等数据类型的操作，以及通用操作和事务处理。

Jedis的使用

1. 导入依赖

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.cpz</groupId>
    <artifactId>maven_jedis</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>jar</packaging>

    <dependencies>
        <dependency>
            <groupId>redis.clients</groupId>
            <artifactId>jedis</artifactId>
            <version>2.8.1</version>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
        </dependency>
    </dependencies>
</project>

2. string 类型的使用

package com.cpz.jedis_string;

import org.junit.Before;
import org.junit.Test;
import redis.clients.jedis.Jedis;

import java.util.List;
import java.util.Set;

public class JedisDemo_String {

    Jedis jedis;

    // 设置IP、密码
    @Before
    public void init(){
        jedis = new Jedis("192.168.106.130");
        jedis.auth("1234");
    }

    // 清除redis中的key
    @Test
    public void demo(){
        Set<String> keys = jedis.keys("*");
        for (String key : keys) {
            System.out.println(key);
            jedis.del(key);
        }
    }

    // 演示 get set mset mget
    @Test
    public void demo1(){
        jedis.set("username","chipeize");
        jedis.mset("password","1234","age","22");
        String age = jedis.get("age");
        System.out.println(age);
        List<String> list = jedis.mget("username", "password");
        for (String s : list) {
            System.out.println(s);
        }
    }

    //演示 append setrange getrange
    @Test
    public void demo2(){
        jedis.append("username"," is a boy");
        System.out.println(jedis.get("username"));

        jedis.setrange("username",14,"man");
        System.out.println(jedis.get("username"));

        System.out.println(jedis.getrange("username",14,-1));
    }
}

3. list 类型的使用

package com.cpz.jedis_list;

import org.junit.Before;
import org.junit.Test;
import redis.clients.jedis.BinaryClient;
import redis.clients.jedis.Jedis;

import java.util.List;
import java.util.Set;

public class JedisDemo_List {

    Jedis jedis;

    // 设置IP、密码
    @Before
    public void init(){
        jedis = new Jedis("192.168.106.130");
        jedis.auth("1234");
    }

    // 清除redis中的key
    @Test
    public void demo(){
        Set<String> keys = jedis.keys("*");
        for (String key : keys) {
            System.out.println(key);
            jedis.del(key);
        }
    }

    // lpush lrange llen lrem lset
    @Test
    public void demo1(){
        jedis.lpush("list1","1","2","3","4","5","6");
        List<String> list1 = jedis.lrange("list1", 0, -1);
        for (String s : list1) {
            System.out.println(s);
        }

        Long len = jedis.llen("list1");
        System.out.println(len);

        Long rem = jedis.lrem("list1", 1, "1");
        System.out.println(rem);

        jedis.lset("list1", 0, "first");

        List<String> list2 = jedis.lrange("list1", 0, -1);
        for (String s : list2) {
            System.out.println(s);
        }
    }

    // lindex linsert
    @Test
    public void demo2(){
        String str = jedis.lindex("list1", 0);
        System.out.println(str);

        jedis.linsert("list1", BinaryClient.LIST_POSITION.BEFORE, "first", "firstff");

        List<String> list1 = jedis.lrange("list1", 0, -1);
        for (String s : list1) {
            System.out.println(s);
        }
    }
}

1.4 hash 类型的使用

package com.cpz.jedis_hash_map;

import org.junit.Before;
import org.junit.Test;
import redis.clients.jedis.Jedis;

import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;

public class JedisDemo_Hash {

    Jedis jedis;

    // 设置IP、密码
    @Before
    public void init(){
        jedis = new Jedis("192.168.106.130");
        jedis.auth("1234");
    }

    // 清除redis中的key
    @Test
    public void demo(){
        Set<String> keys = jedis.keys("*");
        for (String key : keys) {
            System.out.println(key);
            jedis.del(key);
        }
    }

    //hget hset hexists hlen hdel hgetall
    @Test
    public void demo1(){
        Map<String,String> map = new HashMap<String, String>();
        map.put("username","chipeize");
        map.put("password","1234");
        map.put("age","22");
        String map1 = jedis.hmset("map1",map);

        jedis.hset("map1","addr","shenzhen");

        String str = jedis.hget("map1", "username");
        System.out.println(str);

        Boolean flag = jedis.hexists("map1", "age");
        System.out.println(flag);

        Long len = jedis.hlen("map1");
        System.out.println(len);

        jedis.hdel("map1","addr");

        Map<String, String> map2 = jedis.hgetAll("map1");
        for (String string : map2.keySet()) {
            System.out.println(string + " " + map2.get(string));
        }
    }

    // hkeys hvals
    @Test
    public void demo2(){
        Set<String> set = jedis.hkeys("map1");
        for (String s : set) {
            System.out.println(s);
        }

        List<String> list = jedis.hvals("map1");
        for (String s : list) {
            System.out.println(s);
        }
    }
}

1.5 set 类型的使用

package com.cpz.jedis_set;

import org.junit.Before;
import org.junit.Test;
import redis.clients.jedis.Jedis;

import java.util.Set;

public class JedisDemo_Set {

    Jedis jedis;

    // 设置IP、密码
    @Before
    public void init(){
        jedis = new Jedis("192.168.106.130");
        jedis.auth("1234");
    }

    // 清除redis中的key
    @Test
    public void demo(){
        Set<String> keys = jedis.keys("*");
        for (String key : keys) {
            System.out.println(key);
            jedis.del(key);
        }
    }

    //sadd smembets scard srem
    @Test
    public void demo1(){
        jedis.sadd("set1","a","b","c","d","e","f");

        Set<String> set1 = jedis.smembers("set1");
        System.out.println(set1);

        Long scard = jedis.scard("set1");
        System.out.println(scard);

        jedis.srem("set1","f");
        Set<String> set2 = jedis.smembers("set1");
        System.out.println(set2);
    }

    // sdiff sinter sunion
    @Test
    public void demo2(){
        jedis.sadd("set2","c","d","e","f","g");

        Set<String> sdiff = jedis.sdiff("set1", "set2");
        System.out.println(sdiff);

        Set<String> sinter = jedis.sinter("set1", "set2");
        System.out.println(sinter);

        Set<String> sunion = jedis.sunion("set1", "set2");
        System.out.println(sunion);


    }
}

1.6 sortedSet 类型的使用

package com.cpz.jedis_sortedSet;

import org.junit.Before;
import org.junit.Test;
import redis.clients.jedis.Jedis;

import java.util.HashMap;
import java.util.Map;
import java.util.Set;

public class JedisDemo_sortedSet {

    Jedis jedis;

    // 设置IP、密码
    @Before
    public void init(){
        jedis = new Jedis("192.168.106.130");
        jedis.auth("1234");
    }

    // 清除redis中的key
    @Test
    public void demo(){
        Set<String> keys = jedis.keys("*");
        for (String key : keys) {
            System.out.println(key);
            jedis.del(key);
        }
    }

    // zadd zcard zrange zrangebyscore
    @Test
    public void test1(){
        Map<String,Double> map = new HashMap<String,Double>();
        map.put("a",10d);
        map.put("b",20d);
        map.put("c",30d);
        map.put("d",40d);
        map.put("e",50d);
        jedis.zadd("sort1",map);

        Long len = jedis.zcard("sort1");
        System.out.println(len);

        Set<String> set = jedis.zrange("sort1", 0, -1);
        for (String s : set) {
            System.out.println(s);
        }

        Set<String> set2 = jedis.zrangeByScore("sort1", 20d, 40d);
        for (String s : set2) {
            System.out.println(s);
        }
    }

    // zrangk zscore zrem
    @Test
    public void test2(){
        Long idx = jedis.zrank("sort1", "a");
        System.out.println(idx);

        Double zscore = jedis.zscore("sort1", "a");
        System.out.println(zscore);

        jedis.zrem("sort1", "a");
        Set<String> set = jedis.zrange("sort1", 0, -1);
        for (String s : set) {
            System.out.println(s);
        }
    }
}

1.7 通用操作

package com.cpz.jedis_nomal;

import org.junit.Before;
import org.junit.Test;
import redis.clients.jedis.Jedis;

import java.util.Set;

public class JedisDemo_Nomal {

    Jedis jedis;

    // 设置IP、密码
    @Before
    public void init(){
        jedis = new Jedis("192.168.106.130");
        jedis.auth("1234");
    }

    // 清除redis中的key
    @Test
    public void demo(){
        Set<String> keys = jedis.keys("*");
        for (String key : keys) {
            System.out.println(key);
            jedis.del(key);
        }
    }

    // keys del expire persist ttl
    @Test
    public void test1(){
        Set<String> keys = jedis.keys("*");
        for (String key : keys) {
            System.out.println(key);
        }

        jedis.del("username","password");

        Set<String> keys2 = jedis.keys("*");
        for (String key : keys2) {
            System.out.println(key);
        }

        jedis.expire("age",200);

        Long time = jedis.ttl("age");
        System.out.println(time);

        jedis.persist("age");
        Long time2 = jedis.ttl("age");
        System.out.println(time2);
    }

}