详解SpringBoot如何使用Redis和Redis缓存

cd redis安装目录
#启动redis
redis-server  /etc/redis.conf
#进入redis 
redis-cli
#如果你设置了密码
auth 密码

# mysql数据库连接
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/redisdemo?serverTimezone=GMT%2B8
spring.datasource.username=root
spring.datasource.password=123456
#返回json的全局时间格式
spring.jackson.date-format=yyyy-MM-dd HH:mm:ss
spring.jackson.time-zone=GMT+8
#配置mapper xml文件的路径
mybatis-plus.mapper-locations=classpath:com/rh/csdn_redis_demo/mapper/xml/*.xml
#mybatis日志
mybatis-plus.configuration.log-impl=org.apache.ibatis.logging.stdout.StdOutImpl
#配置redis
spring.redis.host=你的redis地址
spring.redis.password=你的redis密码（没有直接空着，或者可以注掉这行）
spring.redis.port=6379
spring.redis.database= 0
spring.redis.timeout=1800000
spring.redis.lettuce.pool.max-active=20
spring.redis.lettuce.pool.max-wait=-1
#最大阻塞等待时间(负数表示没限制)
spring.redis.lettuce.pool.max-idle=5
spring.redis.lettuce.pool.min-idle=0

        Jedis jedis = new Jedis("你的redis安装的ip地址",6379);
        //没有密码就注掉这行，不然会报错
        jedis.auth("你的redis密码");//设置密码

        String value = jedis.ping();

        System.out.println(value);

@EnableCaching
@Configuration
public class RedisConfig extends CachingConfigurerSupport {
    @Bean
    public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory factory) {
        RedisTemplate<String, Object> template = new RedisTemplate<>();
        RedisSerializer<String> redisSerializer = new StringRedisSerializer();
        Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);
        ObjectMapper om = new ObjectMapper();
        om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
        om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
        jackson2JsonRedisSerializer.setObjectMapper(om);
        template.setConnectionFactory(factory);
        //key序列化方式
        template.setKeySerializer(redisSerializer);
        //value序列化
        template.setValueSerializer(jackson2JsonRedisSerializer);
        //value hashmap序列化
        template.setHashValueSerializer(jackson2JsonRedisSerializer);
        return template;
    }

    @Bean
    public CacheManager cacheManager(RedisConnectionFactory factory) {
        RedisSerializer<String> redisSerializer = new StringRedisSerializer();
        Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);
        //解决查询缓存转换异常的问题
        ObjectMapper om = new ObjectMapper();
        om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
        om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
        jackson2JsonRedisSerializer.setObjectMapper(om);
        // 配置序列化（解决乱码的问题）,过期时间600秒
        RedisCacheConfiguration config = RedisCacheConfiguration.defaultCacheConfig()
                .entryTtl(Duration.ofSeconds(600))  //设置数据过期时间600秒
                .serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(redisSerializer))
                .serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(jackson2JsonRedisSerializer))
                .disableCachingNullValues();
        RedisCacheManager cacheManager = RedisCacheManager.builder(factory)
                .cacheDefaults(config)
                .build();
        return cacheManager;
    }
}

@RestController
@RequestMapping("redisTest")
public class RedisTestController {

    @Autowired
    private RedisTemplate redisTemplate;

    @GetMapping("/test01")
    public void test01(){

        redisTemplate.opsForValue().set("test","redis存值测试");

        String test = (String) redisTemplate.opsForValue().get("test");

        System.out.println(test);

    }

}

@RestController
@RequestMapping("redisTest")
public class RedisTestController {

    @Autowired
    private RedisTemplate redisTemplate;
    @Autowired
    private UserService userService;

    @GetMapping("/test01")
    public void test01(){

        redisTemplate.opsForValue().set("test","redis存值测试");

        String test = (String) redisTemplate.opsForValue().get("test");

        System.out.println(test);


    }

    @GetMapping("/test02")
    public List<User> test02(){

        List<User> userList = userService.test02();

        System.out.println(userList);

        return null;
    }
}

@Service
public class UserServiceImpl extends ServiceImpl<UserMapper, User> implements UserService {


    @Cacheable(value = "user",key = "'cache'")
    @Override
    public List<User> test02() {

        List<User> userList = baseMapper.selectList(null);

        return userList;
    }
}