인프런 커뮤니티 질문&답변

화면에서 아이템을 등록하려고 합니다. 

배송방식을 추가하고나서부터 상품 등록 버튼을 누르는 순간400에러가 떨어지는데요ㅠㅠ

20분을 헤멧는데도 이유를 알 수 없어서 질문드립니다.

[컨트롤러]

[DeliveryCode]

[addForm.html]

오류 메시지를 간략하게 적어보면 아래와 같습니다.

2021-07-07 15:10:15.833  WARN 20644 --- [nio-8080-exec-9] .w.s.m.s.DefaultHandlerExceptionResolver : Resolved [org.springframework.validation.BindException: org.springframework.validation.BeanPropertyBindingResult: 1 errors

Field error in object 'item' on field 'deliveryCode': rejected value [FAST]; codes [typeMismatch.item.deliveryCode,typeMismatch.deliveryCode,typeMismatch.hello.itemservice.domain.item.DeliveryCode,typeMismatch]; arguments [org.springframework.context.support.DefaultMessageSourceResolvable: codes [item.deliveryCode,deliveryCode]; arguments []; default message [deliveryCode]]; default message [Failed to convert property value of type 'java.lang.String' to required type 'hello.itemservice.domain.item.DeliveryCode' for property 'deliveryCode'; nested exception is java.lang.IllegalStateException: Cannot convert value of type 'java.lang.String' to required type 'hello.itemservice.domain.item.DeliveryCode' for property 'deliveryCode': no matching editors or conversion strategy found]]