Springboot2.0整合redis基于注解使用.md

版本：

Springboot 2.0
spring 5.0
jdk 1.8.0_121
redis Windows版3.2.100

Windows版redis下载地址

pom依赖

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

redis配置

配置文件

spring.redis.database=1
spring.redis.host=localhost
spring.redis.port=6379
spring.redis.password=root
spring.redis.timeout=20
spring.redis.jedis.pool.max-active=8
spring.redis.jedis.pool.max-wait=-1
spring.redis.jedis.pool.max-idle=5
spring.redis.jedis.pool.min-idle=0

Redis 配置类

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.cache.Cache;
import org.springframework.cache.annotation.CachingConfigurerSupport;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.cache.interceptor.CacheErrorHandler;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.cache.RedisCacheConfiguration;
import org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.RedisSerializationContext;
import org.springframework.data.redis.serializer.StringRedisSerializer;

/**
 * @Author: YiHong
 * @Description: Redis 配置类
 * @Date: Created in 14:29  2018/11/27.
 * @Modified By:
 */
@Configuration
@EnableCaching
public class RedisConfig extends CachingConfigurerSupport {
    private static final Logger logger = LoggerFactory.getLogger(RedisConfig.class);

    @Bean
    public RedisCacheConfiguration redisCacheConfiguration() {
        return RedisCacheConfiguration
                .defaultCacheConfig()
                .serializeKeysWith(
                        RedisSerializationContext
                                .SerializationPair
                                .fromSerializer(new StringRedisSerializer()))
                .serializeValuesWith(
                        RedisSerializationContext
                                .SerializationPair
                                .fromSerializer(new GenericJackson2JsonRedisSerializer()));
    }

    @Override
    @Bean
    public CacheErrorHandler errorHandler() {
        // 异常处理，当Redis发生异常时，打印日志，但是程序正常走
        logger.info("初始化 -> [{}]", "Redis CacheErrorHandler");
        CacheErrorHandler cacheErrorHandler = new CacheErrorHandler() {
            @Override
            public void handleCacheGetError(RuntimeException e, Cache cache, Object key) {
                logger.error("Redis occur handleCacheGetError：key -> [{}]", key, e);
            }

            @Override
            public void handleCachePutError(RuntimeException e, Cache cache, Object key, Object value) {
                logger.error("Redis occur handleCachePutError：key -> [{}]；value -> [{}]", key, value, e);
            }

            @Override
            public void handleCacheEvictError(RuntimeException e, Cache cache, Object key) {
                logger.error("Redis occur handleCacheEvictError：key -> [{}]", key, e);
            }

            @Override
            public void handleCacheClearError(RuntimeException e, Cache cache) {
                logger.error("Redis occur handleCacheClearError：", e);
            }
        };
        return cacheErrorHandler;
    }
}

具体使用--->基于注解

在serviceImpl使用注解

 /**
     * 根据id查询
     *
     * @param id 
     * @return
     */ 
    @Cacheable(value = "configu",key="#id")
    @Override
    public CarseriesConfiguration selectById(String id) {
        return carseriesConfigurationMapper.selectById(id);
    }

至此，就全部ok了。

下面进行测试：

第一次执行该方法，redis数据库存入了该数据，并且控制台打印了sql语句。

redis客户端查看

第二次执行该方法，控制台没有输出sql语句，说明是从redis拿出数据。

以上就是springboot2.0整合redis基于注解的使用。在下一篇，会详细讲解几种注解的使用。