验证public方法spring jpa的查询失败?

我正在创建一个api来从DB查询并返回结果。

这是请求

@RequestMapping(value = "/config", params = { "appCode", "appVersion" }, method = RequestMethod.GET)
public List<AppConfig> getConfig(@RequestParam(value = "appCode", required = true) String appCode,
        @RequestParam(value = "appVersion", required = true) String appVersion) {
    return configRepository.findByCodeAndVersion(appCode, appCode);
}

table类

@Entity
@Table(name = "app_config")
@EntityListeners(AuditingEntityListener.class)
public class AppConfig {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Column(columnDefinition = "serial")
private long id;
@Column(name = "app_code", nullable = false)
private String appCode;
@Column(name = "app_name", nullable = false)
private String appName;
@Column(name = "api_url", nullable = true)
private String apiUrl;
@Column(name = "db_name", nullable = true)
private String dbName;
@Column(name = "app_version", nullable = false)
private String appVersion;
}

正在进行自定义查询的存储库

@Repository
public interface AppConfigRepository extends CrudRepository<AppConfig, Long> {

@Query("SELECT n FROM AppConfig WHERE n.appCode = ?1 and n.appVersion = ?2")
List<AppConfig> findByCodeAndVersion(String appCode, String appVersion);
}

在运行应用程序时,我得到一个异常

Validation failed for query for method public abstract java.util.List com.api.repository.AppConfigRepository.findByCodeAndVersion(java.lang.String,java.lang.String)!