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=127.0.0.1 spring.redis.port=6379 

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

@Configuration public 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。