一、pom文件

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>org.example</groupId>
    <artifactId>springCache</artifactId>
    <version>1.0-SNAPSHOT</version>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.5.5</version>
    </parent>

    <properties>
        <maven.compiler.source>8</maven.compiler.source>
        <maven.compiler.target>8</maven.compiler.target>
    </properties>

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

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
    </dependencies>
</project>

二、yml配置文件

spring:
  # redis相关配置
  redis:
    database: 0
    host: 127.0.0.1
    port: 6379
    password: 123456
    jedis:
      pool:
        # 连接池最大连接数（使用负值表示没有限制）
        max-active: 8
        # 连接池最大阻塞等待时间（使用负值表示没有限制）
        max-wait: -1ms
        # 连接池中的最大空闲连接
        max-idle: 8
        # 连接池中的最小空闲连接
        min-idle: 0
    # 连接超时时间（毫秒）默认是2000ms
    timeout: 2000ms
  cache:
    redis:
      ## Entry expiration in milliseconds. By default the entries never expire.
      time-to-live: 86400
      #写入redis时是否使用键前缀。
      use-key-prefix: true

三、配置类

import org.springframework.beans.factory.annotation.Value;
import org.springframework.cache.CacheManager;
import org.springframework.cache.annotation.CachingConfigurerSupport;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.cache.interceptor.*;
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.core.RedisTemplate;
import org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.RedisSerializationContext;
import org.springframework.data.redis.serializer.StringRedisSerializer;

import javax.annotation.Resource;
import java.time.Duration;
@Configuration
@EnableCaching
public class CacheConfig extends CachingConfigurerSupport {

    @Resource
    private RedisConnectionFactory factory;

    @Value("${spring.cache.redis.time-to-live:3600}")
    private long springCacheRedisTimeToLive;

    /**
     * 自定义生成redis-key
     *
     * @return
     */
    @Override
    @Bean
    public KeyGenerator keyGenerator() {
        return (o, method, objects) -> {
            StringBuilder sb = new StringBuilder();
            sb.append(o.getClass().getName()).append(".");
            sb.append(method.getName()).append(".");
            for (Object obj : objects) {
                sb.append(obj.toString());
            }
            System.out.println("keyGenerator=" + sb.toString());
            return sb.toString();
        };
    }

    @Bean
    public RedisTemplate<Object, Object> redisTemplate() {
        RedisTemplate<Object, Object> redisTemplate = new RedisTemplate<>();
        redisTemplate.setConnectionFactory(factory);

        GenericJackson2JsonRedisSerializer genericJackson2JsonRedisSerializer = new GenericJackson2JsonRedisSerializer();

        redisTemplate.setKeySerializer(genericJackson2JsonRedisSerializer);
        redisTemplate.setValueSerializer(genericJackson2JsonRedisSerializer);

        redisTemplate.setHashKeySerializer(new StringRedisSerializer());
        redisTemplate.setHashValueSerializer(genericJackson2JsonRedisSerializer);
        return redisTemplate;
    }

    @Bean
    @Override
    public CacheResolver cacheResolver() {
        return new SimpleCacheResolver(cacheManager());
    }

    @Bean
    @Override
    public CacheErrorHandler errorHandler() {
        // 用于捕获从Cache中进行CRUD时的异常的回调处理器。
        return new SimpleCacheErrorHandler();
    }

    @Bean
    @Override
    public CacheManager cacheManager() {
        RedisCacheConfiguration cacheConfiguration =
                RedisCacheConfiguration.defaultCacheConfig()
                .entryTtl(Duration.ofSeconds(springCacheRedisTimeToLive))
                .disableCachingNullValues()
                .serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(new StringRedisSerializer()))
                .serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(new GenericJackson2JsonRedisSerializer()));
        return RedisCacheManager.builder(factory).cacheDefaults(cacheConfiguration).build();
    }
}

四、测试使用

import org.springframework.cache.annotation.CacheEvict;
import org.springframework.cache.annotation.Cacheable;
import org.springframework.stereotype.Service;

import java.util.HashMap;
import java.util.Map;

@Service
public class TestService {

    @Cacheable(value = "user:ids",key = "#id")
    public Map select(Long id) {
        Map<String,Object> map = new HashMap<>(1);
        map.put("1","1");
        return map;
    }

    @CacheEvict(value = "user:ids",key = "#id")
    public void del(Long id) {
        return;
    }
}