Springboot2.x 集成Redis

Springboot2.x 集成Redis

Springboot1.5–>2.x 版本升級

具體可查看

Redis緩存變動

1. 首先就是pom.xml導入依賴文件時由jedis

   <dependency>
         <groupId>redis.clients</groupId>
         <artifactId>jedis</artifactId>
       </dependency>	
   

   變更爲lettuce-core：

   <dependency>
         <groupId>io.lettuce</groupId>
         <artifactId>lettuce-core</artifactId>
         <version>5.0.4.RELEASE</version>
         <scope>compile</scope>
       </dependency>									
   

Redis 的三個框架

2. 具體到RedisCacheConfiguration配置類中，由Spingboot1.5的

@ConditionalOnBean(RedisTemplate.class)

​ 變更爲Springboot2.x的

@ConditionalOnClass(RedisConnectionFactory.class)
@ConditionalOnBean(RedisConnectionFactory.class)

3. 因爲1的原因 ，在RedisAutoConfigurationn中，將註解@ConditionalOnClass中的加在Jedis的部分刪去了，取而代之的是用

@ConditionalOnClass(RedisOperations.class)
@Import({ LettuceConnectionConfiguration.class, JedisConnectionConfiguration.class })

代替，而RedisOperations.class 其實就是RedisTemplate(RedisTemplate/StringRedisTemplate)本身。

示例代碼

@Configuration
public class RedisConf {
    @Bean
    public RedisTemplate<Object, User> userRedisTemplate(RedisConnectionFactory redisConnectionFactory) {
        RedisTemplate<Object, User> template = new RedisTemplate<>();
        template.setConnectionFactory(redisConnectionFactory);
        Jackson2JsonRedisSerializer<User> userJackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer<User>(User.class);
        template.setDefaultSerializer(userJackson2JsonRedisSerializer);
        return template;
    }
    @Bean
    public RedisCacheManager userRedisCacheManager(RedisConnectionFactory redisConnectionFactory){
        RedisCacheManager.RedisCacheManagerBuilder builder = RedisCacheManager
                .builder(redisConnectionFactory);
        return builder.build();
    }
}

Github

demo