1、添加依赖

    <dependency>
        <groupId>redis.clients</groupId>
        <artifactId>jedis</artifactId>
        <version>2.9.0</version>
    </dependency>
    <dependency>
        <groupId>org.apache.commons</groupId>
        <artifactId>commons-pool2</artifactId>
        <version>RELEASE</version>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-redis</artifactId>
    </dependency>

2、资源文件配置

    spring.redis.host=localhost
    spring.redis.port=6379

3、配置加载redis

    @Configuration
    public class RedisConfig {
        @Bean
        public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory redisConnectionFactory) throws UnknownHostException {
            RedisTemplate<String, Object> redisTemplate = new RedisTemplate();
            redisTemplate.setConnectionFactory(redisConnectionFactory);
            Jackson2JsonRedisSerializer<Object> serializer = new Jackson2JsonRedisSerializer(Object.class);
            // 设置键（key）的序列化
            redisTemplate.setKeySerializer(new StringRedisSerializer());
            // 设置value序列化
            redisTemplate.setValueSerializer(serializer);
            // 设置HashKey序列化 为啥要hashkey
            redisTemplate.setHashKeySerializer(new StringRedisSerializer());
            // 设置HashValue序列化
            redisTemplate.setHashValueSerializer(serializer);
            // 默认序列化
            redisTemplate.setDefaultSerializer(new StringRedisSerializer());
            return redisTemplate;
        }
    }

4、在service里注入redisTemplat并使用

@Autowired
private RedisTemplate<String, Object> redisTemplate;

    @Override
public User login(String userName, String password) {
    redisTemplate.opsForValue().set(userName, "success");
    Object o=redisTemplate.opsForValue().get(userName);
    System.out.println(o);
    return mapper.login(userName,password);
}