Spring Data JPA Redis:无法编写基于自定义方法的查询

Spring Data JPA Redis : Cannot write custom method based query

我已经使用 Redis 配置了 Spring Data JPA,并使用 RedisRepositories 提供了 find()findAll() 等方法。所有这些方法似乎都运行良好,但我无法像这样编写自定义方法。

RedisEntity findByGenderAndGrade(String gender, String grade);

RedisEntity 是一个简单的 POJO 实体 class。如果您想了解更多信息,请在消息中告诉我。

以下是我的实体:

@Data
@RedisHash("test1")
public class RedisEntity implements Serializable {

    @Id
    @GeneratedValue
    private String id;
    private String name;
    private String gender;
    private Integer grade;
}

存储库:

@Repository
public interface TestRepository extends JpaRepository<RedisEntity, String> {

    List<RedisEntity> findAllByGender(String gender);
    List<RedisEntity> findAllByGrade(Integer grade);
}

Service/Controller:

        @Override
        public List<RedisEntity> getById(String id) {
            return testRepository.findById(id); //returns data perfectly.
        }
        @Override
        public List<RedisEntity> getAllByGender(String gender) {
            return testRepository.findAllByGender(gender); //returns [] 
        }

        @Override
        public void saveEntity(RedisEntity redisEntity) {
            testRepository.save(redisEntity); // saves it in redis perfectly.
        }

此外, findByGender 和 findAllByGender 都给出 [],虽然我可以在我的 redis 数据库中看到数据并保存它。

应 FrançoisDupire 的要求,

@Configuration
public class RedisConfig {

    @Autowired
    private DeploymentProperties deploymentProperties;

    private static Logger logger = LoggerFactory.getLogger(RedisConfig.class);

    @Bean
    JedisConnectionFactory jedisConnectionFactory() {
        RedisStandaloneConfiguration redisStandaloneConfiguration = new RedisStandaloneConfiguration("localhost", 6379);
        redisStandaloneConfiguration.setPassword(RedisPassword.of("root"));
        return new JedisConnectionFactory(redisStandaloneConfiguration);
    }

    @Bean
    public RedisTemplate<String, Object> redisTemplate() {
        RedisTemplate<String, Object> template = new RedisTemplate<>();
        template.setConnectionFactory(jedisConnectionFactory());
        return template;
    }
}

另外,我参考了这篇文章:Baeldung article on Spring data redis

我们有 Spring Data Redis 库,它提供了编写自定义 method.Attaching 示例代码的范围。

<dependency>
    <groupId>org.springframework.data</groupId>
    <artifactId>spring-data-redis</artifactId>
    <version>2.0.8.RELEASE</version>
</dependency>

实体定义

@Data
@RedisHash("EmployeeDetails")
public class RedisEntity {

    @Id
    private String employeeId;

    private String firstName;

    private String lastName;

    private String gender;

    private String grade;

}

存储库定义

@Repository
public interface RedisEntityRepository extends CrudRepository<RedisEntity, String>{

    List<RedisEntity>  findAllByGenderAndGrade(String gender, String grade);
}

实施

@Component
public class RedisEntityImpl implements RedisEntityService {

    @Autowired
    private RedisEntityRepository redisEntityRepository;

    @Override
    public List<RedisEntity> getAllByGenderAndGrade(String gender, String grade) {
        return redisEntityRepository.findAllByGenderAndGrade(gender,grade);
    }
}

属性

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

正如@JoshJ 所提到的,并经过我自己和其他人的验证, 问题的解决方案是:

添加@Indexed 注释 对于所有需要与所有发现一起使用的 columns/fields。

@Data
@RedisHash("EmployeeDetails")
public class RedisEntity {

 @Id
 private String employeeId;

 private String firstName;

 private String lastName;

 @Indexed
 private String gender;

 @Indexed
 private String grade;

}