Spring Boot 使用lettuce 集成多Redis

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最新推荐文章于 2025-05-23 18:36:13 发布

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分类专栏： j2ee 文章标签： redis springboot lettuce

本文链接：https://blog.youkuaiyun.com/qq_18377515/article/details/90380422

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博主分享Spring Boot 2.1.5集成多Redis的经验。集成过程中遇到数据源无法切换、部署后找不到配置的Redis、数据获取及JSON序列化报错等问题。博主最终成功部署，并将分享成功后的代码，为他人提供参考。

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吐槽

Spring boot 2.1.5集成多redis过程中，也遇到和很多坑，如：

数据源不能进行切换
部署之后找不到配置的redis，只去找localhost:6379.
不能获取到数据，报错 json不能序列化等。
还好最终成功了，以下是我成功部署之后的代码，希望能给部分人解答问题。

版本介绍

Spring boot : 2.1.5

application.yml

spring:
  redis:
    host: r-**.redis.rds.aliyuncs.com
    port: 6379
    password: **
    database: 0
    timeout: 2000
    lettuce:
      pool:
        max-active: 8
        max-idle: 8
        min-idle: 0
        max-wait: 8000
    redis38a4:
      host: r-**.redis.rds.aliyuncs.com
      port: 6379
      password: **
      database: 0

RedisConfig.java

@Configuration
@EnableCaching
public class RedisConfig extends CachingConfigurerSupport {
    @Bean
    public RedisTemplate redisTemplate38a4( @Value("${spring.redis.database}") int database,
                                            @Value("${spring.redis.timeout}") long timeout,
                                            @Value("${spring.redis.lettuce.pool.max-active}") int maxActive,
                                            @Value("${spring.redis.lettuce.pool.max-wait}") int maxWait,
                                            @Value("${spring.redis.lettuce.pool.max-idle}") int maxIdle,
                                            @Value("${spring.redis.lettuce.pool.min-idle}") int minIdle,
                                            @Value("${spring.redis.redis38a4.host}") String hostName,
                                            @Value("${spring.redis.redis38a4.port}") int port,
                                            @Value("${spring.redis.redis38a4.password}") String password){
        /* ========= 基本配置 ========= */
        RedisStandaloneConfiguration configuration = new RedisStandaloneConfiguration();
        configuration.setHostName(hostName);
        configuration.setPort(port);
        configuration.setDatabase(database);
        if (!ObjectUtils.isEmpty(password)) {
            RedisPassword redisPassword = RedisPassword.of(password);
            configuration.setPassword(redisPassword);
        }

        /* ========= 连接池通用配置 ========= */
        GenericObjectPoolConfig genericObjectPoolConfig = new GenericObjectPoolConfig();
        genericObjectPoolConfig.setMaxTotal(maxActive);
        genericObjectPoolConfig.setMinIdle(minIdle);
        genericObjectPoolConfig.setMaxIdle(maxIdle);
        genericObjectPoolConfig.setMaxWaitMillis(maxWait);

        /* ========= jedis pool ========= */
        /*
        JedisClientConfiguration.DefaultJedisClientConfigurationBuilder builder = (JedisClientConfiguration.DefaultJedisClientConfigurationBuilder) JedisClientConfiguration
                .builder();
        builder.connectTimeout(Duration.ofSeconds(timeout));
        builder.usePooling();
        builder.poolConfig(genericObjectPoolConfig);
        JedisConnectionFactory connectionFactory = new JedisConnectionFactory(configuration, builder.build());
        // 连接池初始化
        connectionFactory.afterPropertiesSet();
        */

        /* ========= lettuce pool ========= */
        LettucePoolingClientConfiguration.LettucePoolingClientConfigurationBuilder builder = LettucePoolingClientConfiguration.builder();
        builder.poolConfig(genericObjectPoolConfig);
        builder.commandTimeout(Duration.ofSeconds(timeout));
        LettuceConnectionFactory connectionFactory = new LettuceConnectionFactory(configuration, builder.build());
        connectionFactory.afterPropertiesSet();

        /* ========= 创建 template ========= */
        return createRedisTemplate(connectionFactory);

    }
    /**
     * 默认配置(8944) redis template
     *
     * @param redisConnectionFactory
     * @return
     */
    @Bean
    public RedisTemplate redisTemplate8944(RedisConnectionFactory redisConnectionFactory) {
        return createRedisTemplate(redisConnectionFactory);
    }
    /**
     * json 实现 redisTemplate
     * <p>
     * 该方法不能加 @Bean 否则不管如何调用，connectionFactory都会是默认配置
     *
     * @param redisConnectionFactory
     * @return
     */
    public RedisTemplate createRedisTemplate(RedisConnectionFactory redisConnectionFactory) {
        RedisTemplate<String, Object> redisTemplate = new RedisTemplate<>();
        redisTemplate.setConnectionFactory(redisConnectionFactory);
        redisTemplate.setKeySerializer(new StringRedisSerializer());
        redisTemplate.setValueSerializer(new StringRedisSerializer());
//        GenericJackson2JsonRedisSerializer redisSerializer = new GenericJackson2JsonRedisSerializer();
//
//        redisTemplate.setDefaultSerializer(redisSerializer);


//        Jackson2JsonRedisSerializer<Object> jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer<>(Object.class);
//        ObjectMapper objectMapper = new ObjectMapper();
//        objectMapper.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
//        objectMapper.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
//        jackson2JsonRedisSerializer.setObjectMapper(objectMapper);
//
//        redisTemplate.setValueSerializer(jackson2JsonRedisSerializer);
//        redisTemplate.setKeySerializer(new StringRedisSerializer());
//        redisTemplate.afterPropertiesSet();
        return redisTemplate;
    }
}

调用

 @Autowired
@Qualifier("redisTemplate8944")
private RedisTemplate redisTemplate8944;
@Autowired
@Qualifier("redisTemplate38a4")
private RedisTemplate redisTemplate38a4;