PostgreSQL JDBC and json 타입 column 데이터 save

DB mysql 에서는 잘 동작하던 것이 DB 변경할 일이 생겨, mysql -> postgresql 로 전환하였습니다.

데이터 insert 시 json 타입 때문에 발생한 에러인데.. 어떻게 조치하면 좋을지 모르겠습니다.

1. SchedulingTask 엔티티

@Entity
@Getter
@Setter
@NoArgsConstructor
@Slf4j
public class SchedulingTask {
    @Id
    @Column(name = "task_id")
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;
 
   @Column(columnDefinition = "jsonb")
    private String requestBodyString;
}

2. 저장 하는 코드

    public SchedulingTask save(Dbaas dbaas, int priority, ReqInfo reqInfo, String requestBodyString) {
        log.info("requestBodyString : {}", requestBodyString);
        SchedulingTask schedulingTask = reqInfo2SchedulingTaskMapper.to(reqInfo, requestBodyString, priority, dbaas);
        log.info("schedulingTask : {}", schedulingTask.getRequestBodyString());
        return schedulingTaskRepository.save(schedulingTask);
    }

3. log

2023-06-20T10:19:10.064+09:00  INFO 15806 --- [nio-8087-exec-1] c.k.c.a.s.t.SchedulingTaskTxService      : requestBodyString : {"parameter_group_id":"86dc6f7f-75c5-48a2-b0c6-5e07d5c54f5a","request_type":"scheduled instant","reservation_date_time":"2023-09-30 15:02:00"}
2023-06-20T10:19:10.068+09:00  INFO 15806 --- [nio-8087-exec-1] c.k.c.a.s.t.SchedulingTaskTxService      : schedulingTask : {"parameter_group_id":"86dc6f7f-75c5-48a2-b0c6-5e07d5c54f5a","request_type":"scheduled instant","reservation_date_time":"2023-09-30 15:02:00"}
2023-06-20T10:19:10.111+09:00  WARN 15806 --- [nio-8087-exec-1] o.h.engine.jdbc.spi.SqlExceptionHelper   : SQL Error: 0, SQLState: 42804
2023-06-20T10:19:10.111+09:00 ERROR 15806 --- [nio-8087-exec-1] o.h.engine.jdbc.spi.SqlExceptionHelper   : ERROR: column "request_body_string" is of type jsonb but expression is of type character varying
  Hint: You will need to rewrite or cast the expression.
  Position: 359

repository 에 직접 저장 시, requestBodyString 을 json 으로 직접 바꿔줘야 하나요??