Redis Jedis 按需插入不同数据库

        <!-- springboot中的redis依赖-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-redis</artifactId>
        </dependency>
        <!-- jedis依赖-->
        <dependency>
            <groupId>redis.clients</groupId>
            <artifactId>jedis</artifactId>
            <version>3.6.0</version>
        </dependency>

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import redis.clients.jedis.JedisPool;
import redis.clients.jedis.JedisPoolConfig;

@Configuration
public class JedisConfig {

    @Bean
    public JedisPool getJedisPool() {
        JedisPoolConfig config = new JedisPoolConfig();
        config.setMaxIdle(8);
        config.setMaxTotal(200);
        config.setMaxWaitMillis(1000 * 100);
        JedisPool pool = new JedisPool(config, Host, Port, 超时时间(毫秒,默认是2000),数据库密码);
        return pool;
    }
    
}

package com.xunliao.utils;

import com.google.gson.Gson;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;

/**
 * JedisUtil 主要是 多redis库插值
 */
@Component
public class JedisUtil {

    @Autowired
    private JedisPool jedisPool;

    /** 不设置过期时长 */
    public final static int NOT_EXPIRE = -1;
    /** 过期时长*/
    public final static int EXRP_WEEK = 7 * 60 * 60 * 24;

    private final static Gson gson = new Gson();

    /**
     * 插入值-对象,指定数据库 指定过期时间
     *
     * @param key     键
     * @param value   值
     * @param dbIndex 数据库索引 范围 0-15 默认0
     * @param expire  过期时间 单位：秒
     */
    public void set(String key, Object value, Integer dbIndex, int expire) {
        Jedis jedis = getJedis(dbIndex);
        jedis.set(key, toJson(value));
        if (expire != NOT_EXPIRE) {
            jedis.expire(key, expire);
        }
    }

    /**
     * 插入值-对象,指定数据库索引
     */
    public void set(String key, Object value, Integer dbIndex) {
        set(key, value, dbIndex, NOT_EXPIRE);
    }

    /**
     * 获取值-对象,指定数据库索引,并设置过期时间
     * @return
     */
    public <T> T get(String key, Class<T> clazz, Integer dbIndex, int expire) {
        Jedis jedis = getJedis(dbIndex);
        try {
            String value = jedis.get(key);
            if (expire != NOT_EXPIRE) {
                jedis.expire(key, expire);
            }
            return value == null ? null : fromJson(value, clazz);
        } finally {
            jedis.close();
        }
    }

    /**
     * 取值-对象 指定数据库索引
     */
    public <T> T get(String key, Class<T> clazz, Integer dbIndex) {
        return get(key, clazz, dbIndex, NOT_EXPIRE);
    }

    /**
     * 取值-字符串,指定数据库索引,设置过期时间
     */
    public String get(String key, Integer dbIndex, int expire) {
        Jedis jedis = getJedis(dbIndex);
        try {
            String value = jedis.get(key);
            if (expire != NOT_EXPIRE) {
                jedis.expire(key, expire);
            }
            return value;
        } finally {
            jedis.close();
        }
    }

    /**
     * 取值-字符串,指定数据库索引
     */
    public String get(String key, Integer dbIndex) {
        return get(key, dbIndex, NOT_EXPIRE);
    }

    /**
     * 删除,指定索引
     */
    public void delete(String key, Integer dbIndex) {
        Jedis jedis = getJedis(dbIndex);
        try {
            jedis.del(key);
        } finally {
            jedis.close();
        }
    }


    /**
     * 获取jedis对象，并指定dbIndex
     *
     * @param dbIndex
     */
    private Jedis getJedis(Integer dbIndex) {
        Jedis jedis = jedisPool.getResource();
        if (dbIndex == null || dbIndex > 15 || dbIndex < 0) {
            dbIndex = 0;
        }
        jedis.select(dbIndex);
        return jedis;
    }

    /**
     * Object转成JSON数据
     */
    private String toJson(Object object) {
        if (object instanceof Integer || object instanceof Long || object instanceof Float || object instanceof Double
                || object instanceof Boolean || object instanceof String) {
            return String.valueOf(object);
        }
        return gson.toJson(object);

    }

    /**
     * JSON数据，转成Object
     */
    private <T> T fromJson(String json, Class<T> clazz) {
        return gson.fromJson(json, clazz);
    }
}

import com.xunliao.RunApplication;
import com.xunliao.utils.JedisUtil;
import org.junit.Test;
import org.junit.runner.RunWith;
import com.xunliao.RunApplication;
import com.xunliao.utils.JedisUtil;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;

@RunWith(SpringRunner.class)
@SpringBootTest(classes = {RunApplication.class})
public class JedisTest {

    @Autowired
    private JedisUtil jedisUtil;

    @Test
    public void contextLoads() {
        //参数以此是 Key Value 数据库序号 超时时间(秒)
        for (int i = 0; i < 99; i++) {
            jedisUtil.set("key"+i,"value"+i,1,60);
            jedisUtil.set("key"+i,"value"+i,2,120);
        }
    }
}