SpringBoot2.0整合redis

SpringBoot2.0整合Redis

依赖：

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

springboot2.0的redis整合包多出lettuce链接池，须要commons-pool2，因此项目pom依赖要添加commons-pool2

<!-- 高版本redis的lettuce须要commons-pool2 -->
<dependency>
    <groupId>org.apache.commons</groupId>
    <artifactId>commons-pool2</artifactId>
    <version>2.6.0</version>
</dependency>

一、配置类

@Configuration
public class RedisConfig extends CachingConfigurerSupport {

    @Bean
    public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory factory) {

        RedisTemplate<String, Object> template = new RedisTemplate<>();

        RedisSerializer<String> redisSerializer = new StringRedisSerializer();

        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);

        template.setConnectionFactory(factory);
        //key序列化方式
        template.setKeySerializer(redisSerializer);
        //value序列化
        template.setValueSerializer(jackson2JsonRedisSerializer);
        //value hashmap序列化
        template.setHashValueSerializer(jackson2JsonRedisSerializer);

        return template;
    }

    @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）,过时时间30秒
        RedisCacheConfiguration config = RedisCacheConfiguration.defaultCacheConfig()
                .entryTtl(Duration.ofSeconds(30))
                .serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(redisSerializer))
                .serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(jackson2JsonRedisSerializer))
                .disableCachingNullValues();

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

二、yml配置

spring:
  redis:
    database: 0
    host: 127.0.0.1
    jedis:
      pool:
        #最大链接数据库链接数,设 0 为没有限制
        max-active: 8
        #最大等待链接中的数量,设 0 为没有限制
        max-idle: 8
        #最大创建链接等待时间。若是超过此时间将接到异常。设为-1表示无限制。
        max-wait: -1ms
        #最小等待链接中的数量,设 0 为没有限制
        min-idle: 0
    lettuce:
      pool:
        max-active: 8
        max-idle: 8
        max-wait: -1ms
        min-idle: 0
      shutdown-timeout: 100ms
    password: ''
    port: 6379

三、使用

1）StringRedisTemplate，存储字符串类型

//控制层调用
@Autowired
private StringRedisTemplate stringRedisTemplate;

2）、RedisTemplate, 存储对象类型

//控制层调用
@Autowired
private RedisTemplate redisTemplate;