SpringBoot 整合 Redis

    org.springframework.boot
    spring-boot-starter-data-redis

redis:
  host: 192.168.80.188:6379
  password: 123456

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.cache.CacheManager;
import org.springframework.cache.annotation.CachingConfigurerSupport;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.cache.interceptor.KeyGenerator;
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;

import java.lang.reflect.Method;

@Configuration
@EnableCaching
public class RedisConfig extends CachingConfigurerSupport {

    private static final Logger logger = LoggerFactory.getLogger(RedisConfig.class);

    public RedisConfig(){
        logger.info("init RedisConfig...");
    }

    
    @Bean
    public KeyGenerator keyGenerator() {
        return new KeyGenerator() {
            @Override
            public Object generate(Object target, Method method, Object... 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();
            }
        };
    }

   
    @SuppressWarnings("rawtypes")
    @Bean
    public CacheManager cacheManager(RedisConnectionFactory factory) {
        RedisCacheManager cacheManager = RedisCacheManager.create(factory);
        return cacheManager;
    }

    
    @Bean
    public RedisTemplate redisTemplate(RedisConnectionFactory factory) {
        StringRedisTemplate template = new StringRedisTemplate(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);
        template.setValueSerializer(jackson2JsonRedisSerializer);//如果key是String 需要配置一下StringSerializer,不然key会乱码 /XX/XX
        template.setHashValueSerializer(jackson2JsonRedisSerializer);

        template.afterPropertiesSet();
        return template;
    }

}

@ApiOperation("根据accid查询")
@GetMapping("/queryById/{accid}")
public R queryById(@PathVariable Integer accid){
    Account account = null;
    if (redisTemplate.hasKey("account:"+accid)){
        log.info("redis缓存数据库");
        account = (Account) redisTemplate.opsForValue().get("kkk");
    }else{
        log.info("从mysql数据库中");
        account = accountService.queryById(accid);
        // 将从数据库中查询的数据缓存到redis
        redisTemplate.opsForValue().set("account:"+accid,account,60, TimeUnit.SECONDS);
    }
}