springboot+redis

最新推荐文章于 2022-08-03 21:35:40 发布

盖被子的冰块

最新推荐文章于 2022-08-03 21:35:40 发布

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文章标签： redis spring boot java

本文链接：https://blog.youkuaiyun.com/A_Xi_Baa/article/details/121159952

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1、pom

<!--redis-->
<dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>

2、application.yml

spring: 
  redis:
    # 地址
    host: localhost
    # 端口，默认为6379
    port: 6379
    # 密码
    password:
    # 连接超时时间
    timeout: 30s
    lettuce:
      pool:
        # 连接池中的最小空闲连接
        min-idle: 0
        # 连接池中的最大空闲连接
        max-idle: 8
        # 连接池的最大数据库连接数
        max-active: 8
        # #连接池最大阻塞等待时间（使用负值表示没有限制）
        max-wait: -1ms

3、配置RedisConfiguration

@Configuration
public class RedisConfiguration extends CachingConfigurerSupport {
    private Duration timeToLive = Duration.ZERO;
    public void setTimeToLive(Duration timeToLive) {
        this.timeToLive = timeToLive;
    }

    @Bean
    public CacheManager cacheManager(RedisConnectionFactory factory) {
        RedisSerializer<String> redisSerializer = new StringRedisSerializer();
        Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);

        //解决查询缓存转换异常的问题
        ObjectMapper om = new ObjectMapper();
        om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
        om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
        jackson2JsonRedisSerializer.setObjectMapper(om);

        // 配置序列化（解决乱码的问题）
        RedisCacheConfiguration config = RedisCacheConfiguration.defaultCacheConfig()
                .entryTtl(timeToLive)
                .serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(redisSerializer))
                .serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(jackson2JsonRedisSerializer))
                .disableCachingNullValues();

        RedisCacheManager cacheManager = RedisCacheManager.builder(factory)
                .cacheDefaults(config)
                .build();
        return cacheManager;
    }

}

4、实现类

@Cacheable(value = "showDeviceInfo",key = "#deviceInfoSelectDto+'-'+#deviceInfoSelectDto.current+'-'+#deviceInfoSelectDto.size")

@CacheEvict(value = {"showDeviceInfo"},key = "#deviceInfoSelectDto.current+'-'+#deviceInfoSelectDto.size",allEntries = true)

5、启动类

@EnableCaching //开启缓存注解