SpringBoot整合Redis之编写RedisConfig

编写RedisConfig首先我们要明白RedisConfig中需要包含什么，首先看看我们直接使用RedisTemplate的问题，我们就知道RedisConfig要包含什么了，我们在RedisConfig需要规定好根据不同的查询生成的key，key和value的序列化和反序列化

我们在RedisConfig中配置的自定义方法，最终通过注解引用的就是我们自定义的方法

RedisConfig.java   ：     

对redis提供的两个Template的序列化配置

/**
* @Author: JCccc
* @CreateTime: 2018-09-11
* @Description:
*/
import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.cache.CacheManager;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.cache.RedisCacheManager;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;

@Configuration
@EnableCaching
public class RedisConfig {
          @Bean
       public CacheManager cacheManager(RedisConnectionFactory connectionFactory) {
           RedisCacheConfiguration cacheConfiguration =
                   defaultCacheConfig()
                           .disableCachingNullValues()
                           .serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(new Jackson2JsonRedisSerializer(Object.class)));
           return RedisCacheManager.builder(connectionFactory).cacheDefaults(cacheConfiguration).build();

//            RedisCacheManager rcm=RedisCacheManager.create(connectionFactory);
//
//            return rcm;

}

@Bean
       public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory factory) {
           RedisTemplate<String, Object> redisTemplate = new RedisTemplate<>();
           redisTemplate.setConnectionFactory(factory);
           Jackson2JsonRedisSerializer 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);
           //序列化设置 ，这样为了存储操作对象时正常显示的数据，也能正常存储和获取
           redisTemplate.setKeySerializer(new StringRedisSerializer());
           redisTemplate.setValueSerializer(jackson2JsonRedisSerializer);
           redisTemplate.setHashKeySerializer(new StringRedisSerializer());
           redisTemplate.setHashValueSerializer(jackson2JsonRedisSerializer);
           return redisTemplate;
       }
   @Bean
   public StringRedisTemplate stringRedisTemplate(RedisConnectionFactory factory) {
       StringRedisTemplate stringRedisTemplate = new StringRedisTemplate();
       stringRedisTemplate.setConnectionFactory(factory);
       return stringRedisTemplate;
   }

}

补充

redisconfig配置与使用

配置类：

@Configuration   // 定义一个配置类
public class RedisConfig {
   //object object

/*
   * 用于redisApi
   * */
   @Bean
   public RedisTemplate<Object, Object> redisTemplate(RedisConnectionFactory redisConnectionFactory) {
       RedisTemplate<Object, Object> template = new RedisTemplate();
       template.setConnectionFactory(redisConnectionFactory);
       // 使用JSON格式序列化对象，对缓存数据key和value进行转换
       Jackson2JsonRedisSerializer jacksonSeial = new Jackson2JsonRedisSerializer(Object.class);
       // 解决查询缓存转换异常的问题
       ObjectMapper om = new ObjectMapper();
       om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
       om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
       jacksonSeial.setObjectMapper(om);

// 设置RedisTemplate模板API的序列化方式为JSON
       template.setDefaultSerializer(jacksonSeial);
       return template;
   }
}

使用方式：

1. 业务类中进行注入：

@Autowired
RedisTemplate redisTemplate;

2. 使用redisTemplate的内置方法：

2.1 获取redis中的数据

Object object = redisTemplate.opsForValue().get("course_" + id);

2.2 插入数据

redisTemplate.opsForValue().set("course_" + id, course, 1, TimeUnit.DAYS);

来源：https://blog.csdn.net/qq_35387940/article/details/82625922