[ERROR/에러] Unknown integral data type for ids : java.lang.String

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@Entity
@NoArgsConstructor
public class Channel{
    @Id
    @GeneratedValue
    private String id;

    private String name;
    private String reference;

    private AccessType accessType;
    private ChannelType channelType;

    @CreatedDate
    private LocalDateTime createdTime;
    @LastModifiedDate
    private LocalDateTime updatedTime;

    @Builder
    public Channel(String name, String reference, AccessType accessType, ChannelType channelType) {
        this.name = name;
        this.reference = reference;
        this.accessType = accessType;
        this.channelType = channelType;
    }
}

 

@Entity
@NoArgsConstructor
public class Channel{
    @Id
    @GeneratedValue
    private Long id;

    private String name;
    private String reference;

    private AccessType accessType;
    private ChannelType channelType;

    @CreatedDate
    private LocalDateTime createdTime;
    @LastModifiedDate
    private LocalDateTime updatedTime;

    @Builder
    public Channel(String name, String reference, AccessType accessType, ChannelType channelType) {
        this.name = name;
        this.reference = reference;
        this.accessType = accessType;
        this.channelType = channelType;
    }
}

 

SpringBoot의 Annotation @GeneratedValue를 사용할 때의 id의 데이터형은 String이 아닌 정수형 Long, Integer로 처리해야한다.