springboot2.x整合redis缓存

1.引入pom

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

2.application.yml

spring:
    redis:
      #数据库索引
      database: 0
      host: 127.0.0.1
      port: 6379
      password: 123456
      jedis:
        pool:
          #最大连接数
          max-active: 8
          #最大阻塞等待时间(负数表示没限制)
          max-wait: -1
          #最大空闲
          max-idle: 8
          #最小空闲
          min-idle: 0
      #连接超时时间
      timeout: 10000

3.RedisConfig.java

/**
 * Redis缓存配置类
 * @author szekinwin
 *
 */
@Configuration
@EnableCaching
public class RedisConfig extends CachingConfigurerSupport {

    //缓存管理器
    @Bean
    public CacheManager cacheManager(RedisConnectionFactory connectionFactory) {
        //user信息缓存配置
        RedisCacheConfiguration userCacheConfiguration = RedisCacheConfiguration.defaultCacheConfig().entryTtl(Duration.ofSeconds(10)).disableCachingNullValues().prefixKeysWith("user");
        Map<String, RedisCacheConfiguration> redisCacheConfigurationMap = new HashMap<>();
        redisCacheConfigurationMap.put("user", userCacheConfiguration);
        //初始化一个RedisCacheWriter
        RedisCacheWriter redisCacheWriter = RedisCacheWriter.nonLockingRedisCacheWriter(connectionFactory);


//        设置CacheManager的值序列化方式为JdkSerializationRedisSerializer,但其实RedisCacheConfiguration默认就是使用StringRedisSerializer序列化key，JdkSerializationRedisSerializer序列化value,所以以下注释代码为默认实现
//        ClassLoader loader = this.getClass().getClassLoader();
//        JdkSerializationRedisSerializer jdkSerializer = new JdkSerializationRedisSerializer(loader);
//        RedisSerializationContext.SerializationPair<Object> pair = RedisSerializationContext.SerializationPair.fromSerializer(jdkSerializer);
//        RedisCacheConfiguration defaultCacheConfig = RedisCacheConfiguration.defaultCacheConfig().serializeValuesWith(pair);

        RedisCacheConfiguration defaultCacheConfig = RedisCacheConfiguration.defaultCacheConfig();

        //设置默认超过期时间是30秒
        defaultCacheConfig.entryTtl(Duration.ofSeconds(30));
        //初始化RedisCacheManager
        RedisCacheManager cacheManager = new RedisCacheManager(redisCacheWriter, defaultCacheConfig, redisCacheConfigurationMap);
        return cacheManager;
    }
}

3.UserService.java

@Service
public class UserService {
    @Autowired
    StringRedisTemplate stringRedisTemplate;
    @Autowired
    RedisTemplate redisTemplate;

    @Cacheable(value = "user", key ="#id", unless = "#result==null")
    public String getUser(int id) {
        System.out.println("i am from userService");
        System.out.println(stringRedisTemplate.getValueSerializer());
        System.out.println(redisTemplate.getValueSerializer());
        return "fee";
    }
}

4.UserController.java

@RestController
public class UserController {

    @Autowired
    UserService userService;

    @GetMapping("getUser")
    public String getUser() {
        return userService.getUser(001);
    }
}

5.访问 http://127.0.0.1:8080/getUser