前兩天琢磨了一下，也不能總用默認(rèn)的0號(hào)緩存庫，于是就上網(wǎng)查了資料，整合了動(dòng)態(tài)切換緩存庫的功能，但是還不滿足于我，畢竟我用的可是FastJson第三方庫，于是又在這基礎(chǔ)上修改成了可以配合FastJson庫的一套配置類。

RedisConfig.class

package cc.buckler.config;

import com.alibaba.fastjson.support.spring.FastJsonRedisSerializer;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.connection.RedisStandaloneConfiguration;
import org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.StringRedisSerializer;

import javax.annotation.PostConstruct;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * Created on 2022/2/23
 *
 * @author Buckler
 * @description RedisConfig
 */
@Configuration
public class RedisConfig {
    //redis地址
    @Value("${spring.redis.host}")
    private String host;

    //redis端口號(hào)
    @Value("${spring.redis.port}")
    private int port;

    //redis密碼
    @Value("${spring.redis.password}")
    private String password;

    //默認(rèn)數(shù)據(jù)庫
    private int defaultDB;

    //多個(gè)數(shù)據(jù)庫集合
    @Value("${spring.redis.dbs}")
    private List<Integer> dbList;

    //RedisTemplate實(shí)例
    private static Map<Integer, RedisTemplate<String, Object>> redisTemplateMap = new HashMap<>();

    /**
     * 初始化連接池
     */
    @PostConstruct
    public void initRedisTemplate() {
        defaultDB = dbList.get(0);//設(shè)置默認(rèn)數(shù)據(jù)庫
        for (Integer db : dbList) {
            //存儲(chǔ)多個(gè)RedisTemplate實(shí)例
            redisTemplateMap.put(db, redisTemplate(db));
        }
    }

    public LettuceConnectionFactory redisConnection(int db) {
        RedisStandaloneConfiguration server = new RedisStandaloneConfiguration();
        server.setHostName(host); // 指定地址
        server.setDatabase(db); // 指定數(shù)據(jù)庫
        server.setPort(port); //指定端口
        server.setPassword(password); //指定密碼
        LettuceConnectionFactory factory = new LettuceConnectionFactory(server);
        factory.afterPropertiesSet(); //刷新配置
        return factory;
    }

    public RedisTemplate<String, Object> redisTemplate(int db) {
        RedisTemplate<String, Object> template = new RedisTemplate<>();
        template.setConnectionFactory(redisConnection(db));
        FastJsonRedisSerializer serializer = new FastJsonRedisSerializer(Object.class);
        // value值的序列化采用fastJsonRedisSerializer
        template.setValueSerializer(serializer);
        template.setHashValueSerializer(serializer);
        // key的序列化采用StringRedisSerializer
        template.setKeySerializer(new StringRedisSerializer());
        template.setHashKeySerializer(new StringRedisSerializer());
        template.setConnectionFactory(redisConnection(db));
        template.afterPropertiesSet();
        return template;
    }

    /**
     * 指定數(shù)據(jù)庫進(jìn)行切換
     *
     * @param db 數(shù)據(jù)庫索引
     * @return
     */
    public RedisTemplate<String, Object> getRedisTemplateByDb(int db) {
        return redisTemplateMap.get(db);
    }

    /**
     * 使用默認(rèn)數(shù)據(jù)庫
     *
     * @return
     */
    public RedisTemplate<String, Object> getRedisTemplate() {
        return redisTemplateMap.get(defaultDB);
    }


//    // RedisTemplate模板
//    public RedisTemplate<String, Object> redisTemplate(int db) {
//        //為了開發(fā)方便，一般直接使用<String,Object>
//        RedisTemplate<String, Object> template = new RedisTemplate<>();
//        template.setConnectionFactory(redisConnection(db)); //設(shè)置連接
//        //Json序列化配置
//        Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);
//        ObjectMapper om = new ObjectMapper();
//        om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
//        om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
//        jackson2JsonRedisSerializer.setObjectMapper(om);
//        //String的序列化
//        StringRedisSerializer stringRedisSerializer = new StringRedisSerializer();
//        //key采用String的序列化方式
//        template.setKeySerializer(stringRedisSerializer);
//        //hash的key采用String的序列化方式
//        template.setHashKeySerializer(stringRedisSerializer);
//        //value序列化方式采用jackson
//        template.setValueSerializer(jackson2JsonRedisSerializer);
//        //hash序列化方式采用jackson
//        template.setHashValueSerializer(jackson2JsonRedisSerializer);
//        template.afterPropertiesSet();
//        return template;
//    }
}

那么配置類有了，搭配的application.yml配置文件也需要做相應(yīng)的修改，其實(shí)很簡單，只需要在原有的基礎(chǔ)上改為如下格式即可

spring
  redis:
    dbs: 0,1,2,3,4,5
    host: localhost
    port: 6379
    password: redis-password

簡單記錄一下