spring boot2配置redis缓存，缓存使用Jackson2序列化

pom配置

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

配置文件引入redis配置

spring:
  #redis
  redis:
    host: 172.16.100.65
    database: 0
    port: 6379
    password: 123456
    lettuce:
        pool:
          #最大连接数
          max-active: 8
          #最大阻塞等待时间(负数表示没限制)
          max-wait: -1
          #最大空闲
          max-idle: 8
          #最小空闲
          min-idle: 0
    #连接超时时间
    timeout: 10000

RedisConfig配置类

package com.fuzamei.bonuspoint.configuration;

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.boot.autoconfigure.data.redis.RedisProperties;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
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.cache.interceptor.SimpleKeyGenerator;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.cache.RedisCacheConfiguration;
import org.springframework.data.redis.cache.RedisCacheManager;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory;
import org.springframework.data.redis.core.RedisOperations;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.data.redis.serializer.*;


import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.serializer.SerializerFeature;

import java.nio.charset.Charset;


import java.lang.reflect.Method;
import java.time.Duration;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;


/**
 * 
 * @description: redis 缓存配置类
 * @author: WangJie
 * @create: 2018-05-02 15:14
 **/
@Configuration
@EnableCaching
public class RedisConfig extends CachingConfigurerSupport {



    /**
     * json序列化
     * @return
     */
    @Bean
    public RedisSerializer<Object> jackson2JsonRedisSerializer() {
        //使用Jackson2JsonRedisSerializer来序列化和反序列化redis的value值
        Jackson2JsonRedisSerializer serializer = new Jackson2JsonRedisSerializer(Object.class);

        ObjectMapper mapper = new ObjectMapper();
        mapper.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
        mapper.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
        serializer.setObjectMapper(mapper);
        return serializer;
    }

    @Bean
    public RedisTemplate<String, Object> redisTemplate(LettuceConnectionFactory lettuceConnectionFactory) {
        //StringRedisTemplate的构造方法中默认设置了stringSerializer
        RedisTemplate<String, Object> template = new RedisTemplate<>();
        //set key serializer
        StringRedisSerializer stringRedisSerializer = new StringRedisSerializer();
        template.setKeySerializer(stringRedisSerializer);
        template.setHashKeySerializer(stringRedisSerializer);


        //set value serializer
        template.setDefaultSerializer(jackson2JsonRedisSerializer());

        template.setConnectionFactory(lettuceConnectionFactory);
        template.afterPropertiesSet();
        return template;
    }

    @Bean
    public StringRedisTemplate stringRedisTemplate(LettuceConnectionFactory lettuceConnectionFactory) {
        StringRedisTemplate template = new StringRedisTemplate();
        template.setConnectionFactory(lettuceConnectionFactory);
        return template;
    }
    /**
     * 在使用@Cacheable时，如果不指定key，则使用找个默认的key生成器生成的key
     *
     */
    @Override
    @Bean
    public KeyGenerator keyGenerator() {
        return new SimpleKeyGenerator() {

            @Override
            public Object generate(Object target, Method method, Object... params) {
                StringBuilder sb = new StringBuilder();
                sb.append(target.getClass().getName());
                sb.append(".").append(method.getName());

                StringBuilder paramsSb = new StringBuilder();
                for (Object param : params) {
                    // 如果不指定，默认生成包含到键值中
                    if (param != null) {
                        paramsSb.append(param.toString());
                    }
                }

                if (paramsSb.length() > 0) {
                    sb.append("_").append(paramsSb);
                }
                return sb.toString();
            }

        };

    }

    /**
     * 管理缓存
     *
     * @param lettuceConnectionFactory
     * @return
     */
    //缓存管理器
    @Bean
    public CacheManager cacheManager(LettuceConnectionFactory lettuceConnectionFactory) {
        // 生成一个默认配置，通过config对象即可对缓存进行自定义配置
        RedisCacheConfiguration config = RedisCacheConfiguration.defaultCacheConfig();

        // 设置缓存的默认过期时间，也是使用Duration设置
        config = config.entryTtl(Duration.ofMinutes(1))
                // 设置 key为string序列化
                .serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(new StringRedisSerializer()))
                // 设置value为json序列化
                .serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(jackson2JsonRedisSerializer() ))
                // 不缓存空值
                .disableCachingNullValues();

        // 设置一个初始化的缓存空间set集合
        Set<String> cacheNames = new HashSet<>();
        cacheNames.add("company_goods_info");

        // 对每个缓存空间应用不同的配置
        Map<String, RedisCacheConfiguration> configMap = new HashMap<>();
        configMap.put("company_goods_info", config);

        // 使用自定义的缓存配置初始化一个cacheManager
        RedisCacheManager cacheManager = RedisCacheManager.builder(lettuceConnectionFactory)
                // 一定要先调用该方法设置初始化的缓存名，再初始化相关的配置
                .initialCacheNames(cacheNames)
                .withInitialCacheConfigurations(configMap)
                .build();
        return cacheManager;
    }



}

应用

    @Override
    @Cacheable(value = "company_goods_info" , key = "'company_goods_info_'+#companyId")
    public ResponseVO getCompanyGoodsInfo(Long companyId) {
        log.info("未使用缓存");
        CompanyGoodsInfoDTO companyGoodsInfoDTO = goodDao.companyGoodsInfo(companyId);
        return new ResponseVO(CommonResponseEnum.QUERY_SUCCESS,companyGoodsInfoDTO);
    }

测试

  @Test
    public void cacheTest(){
        goodService.getCompanyGoodsInfo(5L);
        goodService.getCompanyGoodsInfo(5L);
        goodService.getCompanyGoodsInfo(4L);
        goodService.getCompanyGoodsInfo(4L);
    }

运行结果