Redis在SpringBoot中的简单使用

一、导入依赖

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-redis</artifactId>
    <version>2.7.8</version>
</dependency>

二、后台代码

@RestController
@RequestMapping("/kind")
public class KindController {

    @Autowired
    private KindService kindService;

    @Autowired
    RedisTemplate redisTemplate;

    static String REDIS_KIND_LIST = "kind_list";
    @GetMapping("/list")
    public List<Kind> list(){
        //从Redis中获取分类数据
//        listOperations对集合进行操作
        ListOperations listOperations = redisTemplate.opsForList();
        Long size = listOperations.size(REDIS_KIND_LIST);
        if (size != null && size > 0){
            //如果Redis中存在分类数据，直接返回Redis中分类数据
            List list = listOperations.range(REDIS_KIND_LIST, 0, size - 1);
            return list;
        }else {
            //如果Redis中不存在分类数据，从数据库中取出分类数据
            List<Kind> list = kindService.list();
            //将分类数据存储在Redis中，并返回
            listOperations.rightPushAll(REDIS_KIND_LIST,list);
            return list;
        }

    }
}

三、序列化问题导致存储在Redis显示非中文

package org.yunfree.toutiao202302.config;


import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
import org.yunfree.toutiao202302.modle.Kind;

import java.net.UnknownHostException;

import java.awt.print.Book;

@Configuration
public class RedisConfig  {

   @Bean
    public RedisTemplate<String, Kind> redisTemplate(RedisConnectionFactory redisConnectionFactory) throws UnknownHostException {
        RedisTemplate<String, Kind> template = new RedisTemplate();
        template.setConnectionFactory(redisConnectionFactory);
        Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Kind.class);
        template.setDefaultSerializer(jackson2JsonRedisSerializer);
        return template;
    }

}