spring-data-redis 2.0 的使用示例代码

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


    <!--spring2.0集成redis所需common-pool2-->
    <dependency>
      <groupId>org.apache.commons</groupId>
      <artifactId>commons-pool2</artifactId>
      <version>2.4.2</version>
    </dependency>

 redis:
  #  reids的连接ip
  host: 127.0.0.1
  port: 6379
  password: helloworld
  
  # Redis默认情况下有16个分片，这里配置具体使用的分片，默认是0
  database: 0
  
  # 连接超时时间（毫秒)
  timeout: 10000ms
  
  # redis client配置，使用lettuce
  lettuce:
   pool:
    # 连接池中的最小空闲连接 默认 0
    min-idle: 0
    # 连接池最大阻塞等待时间（使用负值表示没有限制） 默认 -1
    max-wait: 1000ms
    # 连接池最大连接数（使用负值表示没有限制） 默认 8
    max-active: 8
    # 连接池中的最大空闲连接 默认 8
    max-idle: 8

@EnableSwagger2     // 使用swagger api 功能
@EnableCaching      // 使用缓存
@SpringBootApplication
public class Starter {

  public static void main(String[] args) {
    SpringApplication.run(Starter.class, args);
  }
}

  /**
   * 基于id 获取用户信息
   */
  @Cacheable(value="user", key="#id", unless="#result == null")
  public UserDTO GetUserById(int id) {
    User userEntity = userMapper.getUserByID(id);
    if (userEntity == null){
      return null;
    }

    /* entity 转 DTO */
    UserDTO userDTO = new UserDTO();
    userDTO.setAge(userEntity.getAge());
    userDTO.setId(id);
    userDTO.setName(userEntity.getName());
    userDTO.setCreateTime(unixTime2String(userEntity.getCreateTime()));
    userDTO.setPhone(userEntity.getPhone());
    userDTO.setEmail(userEntity.getEmail());
    return userDTO;
  }

  @CachePut(value = "user", key="#p0.id")
  public UserDTO updateUser(InputUserInfoDTO inputUserInfoDTO){
    userMapper.updateUser(inputUserInfoDTO.getId(), inputUserInfoDTO.getName(), inputUserInfoDTO.getAge());
    User userEntity = userMapper.getUserByID(inputUserInfoDTO.getId());/* entity 转 DTO */

    if (null == userEntity){
      return null;
    }
    UserDTO userDTO = new UserDTO();
    userDTO.setAge(userEntity.getAge());
    userDTO.setId(userEntity.getId());
    userDTO.setName(userEntity.getName());
    userDTO.setCreateTime(unixTime2String(userEntity.getCreateTime()));
    userDTO.setPhone(userEntity.getPhone());
    userDTO.setEmail(userEntity.getEmail());
    return userDTO;
  }

  @CacheEvict(value = "user", key="#id")
  public void deleteUser(int id){
    userMapper.deleteUser(id);
  }

@Data
public class UserDTO implements Serializable {
//public class UserDTO implements Serializable {
  private int id;
  private String name;
  private int age;
  private String createTime;
  private String phone;
  private String email;
}

@Configuration
@ConditionalOnClass(RedisOperations.class)
@EnableConfigurationProperties(RedisProperties.class)
public class RedisConfig extends CachingConfigurerSupport{

  @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）
    RedisCacheConfiguration config = RedisCacheConfiguration.defaultCacheConfig()
                      .entryTtl(Duration.ZERO)
                      .serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(redisSerializer))
                      .serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(jackson2JsonRedisSerializer))
                      .disableCachingNullValues();

    RedisCacheManager cacheManager = RedisCacheManager.builder(factory).cacheDefaults(config).build();
    return cacheManager;
  }
}