1.spring搭建

pom.xml 文件配置：

<dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-redis</artifactId>
        </dependency>
        <dependency>
            <groupId>org.codehaus.jackson</groupId>
            <artifactId>jackson-mapper-asl</artifactId>
            <version>1.9.13</version>
        </dependency>
        <!--序列化有关-->
        <!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-databind -->
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <version>2.9.9.3</version>
        </dependency>
        <!--缓存有关-->
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-pool2</artifactId>
            <version>2.0</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.module/jackson-module-afterburner -->
        <dependency>
            <groupId>com.fasterxml.jackson.module</groupId>
            <artifactId>jackson-module-afterburner</artifactId>
            <version>2.9.9</version>
        </dependency>

application.yaml 配置：  

#redis 配置
spring:
  redis:
    host: 127.0.0.1 #ip地址
    port: 6379 #端口
    password: cgx123 #密码
    lettuce:
      pool:
        max-active: 8 # 连接池最大连接数
        max-wait: -1ms #连接池最大阻塞等待时间（使用负值表示没有限制）
        max-idle: 8 #连接池中的最大空闲连接
        min-idle: 0 #连接池中的最小空闲连接
    database: 0 #默认使用的数据库  在redis有16个数据库

redisconfig配置：

package com.cgx.mybatis.mysqlmy.config;

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.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.RedisCacheConfiguration;
import org.springframework.data.redis.cache.RedisCacheManager;
import org.springframework.data.redis.cache.RedisCacheWriter;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;

import java.time.Duration;
import java.util.HashMap;
import java.util.Map;

/**
 * 类配置
 */
@Configuration
@EnableCaching
public class RedisConfig extends CachingConfigurerSupport {

    @Bean
    public RedisTemplate<String, String> redisTemplate(RedisConnectionFactory factory) {
        RedisTemplate<String, String> redisTemplate = new  RedisTemplate<String, String>();
        //配置连接工厂
        redisTemplate.setConnectionFactory(factory);
        //使用Jackson2JsonRedisSerializer来序列化和反序列化redis的value值（默认使用JDK的序列化方式）
        Jackson2JsonRedisSerializer jacksonSeial = new Jackson2JsonRedisSerializer(Object.class);
        ObjectMapper om = new ObjectMapper();
        // 指定要序列化的域，field,get和set,以及修饰符范围，ANY是都有包括private和public
        om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
        // 指定序列化输入的类型，类必须是非final修饰的，final修饰的类，比如String,Integer等会跑出异常
        om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
        jacksonSeial.setObjectMapper(om);
        // 值采用json序列化
        redisTemplate.setValueSerializer(jacksonSeial);

        //使用StringRedisSerializer来序列化和反序列化redis的key值
        redisTemplate.setKeySerializer(new StringRedisSerializer());
        // 设置hash key 和value序列化模式
        redisTemplate.setHashKeySerializer(new StringRedisSerializer());
        redisTemplate.setHashValueSerializer(jacksonSeial);
        redisTemplate.afterPropertiesSet();

        return redisTemplate;
    }

    /**
     * 缓存管理器
     * @return
     */
    @Bean
    public CacheManager cacheManager(RedisConnectionFactory connectionFactory) {
        //初始化一个RedisCacheWriter
        RedisCacheWriter redisCacheWriter = RedisCacheWriter.nonLockingRedisCacheWriter(connectionFactory);
        RedisCacheConfiguration defaultCacheConfig = RedisCacheConfiguration.defaultCacheConfig();
        //设置默认超过期时间是1天
        defaultCacheConfig.entryTtl(Duration.ofDays(1));
        defaultCacheConfig.prefixKeysWith("user:");
        //初始化RedisCacheManager
        RedisCacheManager cacheManager = new RedisCacheManager(redisCacheWriter, defaultCacheConfig);

        return cacheManager;
    }


    @Bean
    @Override
    public KeyGenerator keyGenerator() {
        return (target, method, objects) -> {
            StringBuilder sb = new StringBuilder();
            sb.append(target.getClass().getName());
            sb.append("::" + method.getName() + ":");
            for (Object obj : objects) {
                sb.append(obj.toString());
            }
            return sb.toString();
        };
    }
}

 

接下来，就可以使用RedisTemplate类。在注入时，如果自己有在配置类中使用了@Bean实例化RedisTemplate，那么只能使用@Resource注入（按照名字装配），若没有，可以使用@Autowired。

解释：https://blog.csdn.net/zhaoheng314/article/details/81564166

2.使用

 

3.