SpringBoot Redis 2.0.x

原创

tanoak

发布于 2018-07-13 19:59:00

3810

发布于 2018-07-13 19:59:00

文章被收录于专栏：java闲聊

* redis的安装

在笔者之前的文章中有介绍redis的安装，不会的可以去看笔者之前写的文章redis安装

* 完成安装后如果不熟悉redis的操作，redis官方文档也有基本操作指南，redis基本操作,如果觉得没问题了就可以开始对redis的整合

maven安装依赖

<dependency>

    <groupId>org.springframework.boot</groupId>

    <artifactId>spring-boot-starter-data-redis</artifactId>

</dependency>

redis自动会吧cache的依赖带过来，所有不用配置，如图

启动类增加@EnableCaching 注解

@SpringBootApplication

@MapperScan("com.tanoak.mapper")

@EnableCaching

public class BootRedisApplication {

    public static void main(String[] args) {

        SpringApplication.run(BootRedisApplication.class, args);

    }

}

service层增加@Cacheable 注解

@Override

    @Cacheable(cacheNames= "tea")

    public Teacher getTeaById(Integer id) {

        logger.info("进行查询实体 ID为"+id);

        return teacherMapper.getTeaById(id) ;

    }

controller 查询

@GetMapping("/tea/{id}")

public Teacher getTea(@PathVariable("id")Integer id){

        return    teacherService.getTeaById(id) ;

    }

RedisCacheManager 配置

在SpringBoot2.x中，移除了1.x中的配置，因此要配置Json序列化与1.x的差别很大，看代码

@Configuration

@EnableCaching

public class MyRedisConfig extends CachingConfigurerSupport {



    /\*

    \*自定义键生成策略

    \*/

    @Bean

    public KeyGenerator KeyGenerator() {

        return (target, method, params) -> {

            StringBuilder sb = new StringBuilder();

            sb.append(target.getClass().getName());

            sb.append(method.getName());

            for (Object obj : params) {

                sb.append(obj.toString());

            }

            return sb.toString();

        };

    }





    @Bean

    public RedisCacheConfiguration redisCacheConfiguration() {

        Jackson2JsonRedisSerializer<Object> 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);

        RedisCacheConfiguration redisCacheConfiguration = RedisCacheConfiguration.defaultCacheConfig();

        redisCacheConfiguration = redisCacheConfiguration.serializeValuesWith(

                RedisSerializationContext

                        .SerializationPai

                        .fromSerializer(jackson2JsonRedisSerializer)

                //设置默认超过期时间是30秒

        ).entryTtl(Duration.ofMinutes(30));



        return redisCacheConfiguration;

    }



}