Spring Data Redis 的使用方法

使用前需要开启Redis服务。

操作步骤：

一. 导入Spring Data Redis的maven坐标

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

二. 配置Redis数据源

sky:
  redis:
    host: localhost
    port: 6379
    password: ****
    database: 0

三. 编写配置类，创建RedisTemplate对象

@Configuration
@Slf4j
public class RedisConfiguration {

    @Bean
    public RedisTemplate redisTemplate(RedisConnectionFactory redisConnectionFactory){
        log.info("开始创建RedisTemplate对象...");
        RedisTemplate redisTemplate = new RedisTemplate();
        // 设置redis连接工厂对象
        redisTemplate.setConnectionFactory(redisConnectionFactory);
        // 设置redis key的序列化器
        redisTemplate.setKeySerializer(new StringRedisSerializer());
        return redisTemplate;
    }
}

四. 通过RedisTemplate操作Redis

这里以字符串和hash为例：

    @Autowired
    private RedisTemplate redisTemplate;

/**
     * 操作字符串
     */
    @Test
    public void testString(){
        ValueOperations valueOperations = redisTemplate.opsForValue();
        valueOperations.set("name","张三");
        String name = (String) valueOperations.get("name");
        System.out.println(name);
        valueOperations.set("code","123456",3, TimeUnit.MINUTES);
        valueOperations.setIfAbsent("code","123456");
    }

    /**
     * 操作hash
     */
    @Test
    public void testHash(){
        //hset hget hdel hkeys hsize hvalues
        HashOperations hashOperations = redisTemplate.opsForHash();
        hashOperations.put("100","name","szj");
        hashOperations.put("100","age",20);

        String name = (String) hashOperations.get("100", "name");
        System.out.println(name);

        Set keys = hashOperations.keys("100");
        System.out.println(keys);

        List values = hashOperations.values("100");
        System.out.println(values);

        hashOperations.delete("100","age");

    }