springboot mybatisplus怎样与redis集成

要在Spring Boot中集成MyBatis Plus和Redis，首先需要添加相关的依赖。在pom.xml文件中添加以下依赖：

<dependency>    <groupId>com.baomidou</groupId>    <artifactId>mybatis-plus-boot-starter</artifactId>    <version>3.4.2</version></dependency><dependency>    <groupId>org.springframework.boot</groupId>    <artifactId>spring-boot-starter-data-redis</artifactId></dependency>

接下来，在application.properties文件中配置Redis的连接信息：

spring.redis.host=127.0.0.1spring.redis.port=6379

然后，创建一个RedisConfiguration类，用于配置RedisTemplate和RedisCacheManager：

@Configurationpublic class RedisConfiguration {    @Bean    public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory redisConnectionFactory) {        RedisTemplate<String, Object> redisTemplate = new RedisTemplate<>();        redisTemplate.setConnectionFactory(redisConnectionFactory);        redisTemplate.setKeySerializer(new StringRedisSerializer());        redisTemplate.setValueSerializer(new GenericJackson2JsonRedisSerializer());        redisTemplate.setHashKeySerializer(new StringRedisSerializer());        redisTemplate.setHashValueSerializer(new GenericJackson2JsonRedisSerializer());        redisTemplate.afterPropertiesSet();        return redisTemplate;    }    @Bean    public CacheManager cacheManager(RedisConnectionFactory redisConnectionFactory) {        RedisCacheConfiguration cacheConfiguration = RedisCacheConfiguration.defaultCacheConfig()                .serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(new StringRedisSerializer()))                .serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(new GenericJackson2JsonRedisSerializer()));        return RedisCacheManager.builder(redisConnectionFactory)                .cacheDefaults(cacheConfiguration)                .build();    }}

最后，在MyBatis Plus的配置类中开启二级缓存，并设置Redis作为缓存：

@Configuration@MapperScan("com.example.mapper")public class MybatisPlusConfig {    @Bean    public ConfigurationCustomizer configurationCustomizer() {        return new MybatisPlusCustomizers();    }    static class MybatisPlusCustomizers implements ConfigurationCustomizer {        @Override        public void customize(org.apache.ibatis.session.Configuration configuration) {            configuration.setCacheEnabled(true);            configuration.addCache(new RedisCache("mybatis-plus", new JedisCache(redisTemplate)));        }    }}

现在，MyBatis Plus和Redis已经集成成功。您可以在MyBatis的Mapper接口中使用@CacheNamespace注解来开启二级缓存，并指定缓存的名称：

@Mapper@CacheNamespace(implementation = RedisCache.class, properties = {@Property(name = "cache.days", value = "1")})public interface UserMapper extends BaseMapper<User> {    // your methods here}

这样就完成了MyBatis Plus和Redis的集成。您可以在项目中使用MyBatis Plus进行数据库操作，并使用Redis作为缓存来提高性能。