发送响应实体时更改日期格式

Answer 1

您可以创建映射器并将您的实体对象映射到将发送到前端的DTO。

由于您没有指定用于日期的类，因此我将使用LocalDate作为示例，但相同的逻辑可以应用于date类。

假设您的实体类如下所示：

public class SampleEntity {
    private LocalDate localDate;
}

public class SampleDto {
    // the Jackson annotation to format your date according to your needs.
    @DateTimeFormat(pattern = "DD-MM-YYYY")
    private LocalDate localDate;
}

@Component
public class SampleMapper {
    public SampleDto mapTo(final SampleEntity sampleEntity){
        // do the mapping
        SampleDto sampleDto = new SampleDto();
        sampleDto.setLocalDate(sampleEntity.getLocalDate());
        return sampleDto;
    }

    public SampleEntity mapFrom(final SampleDto sampleDto){
        // do the mapping
        SampleEntity sampleEntity = new SampleEntity();
        sampleEntity.setLocalDate(sampleDto.getLocalDate());
        return sampleEntity;
    }
}

@GetMapping
public ResponseEntity<SampleDto> exampleMethod() {
    // service call to fetch your entity
    SampleEntity sampleEntity = new SampleEntity(); // lets say this is the fetched entity
    sampleEntity.setLocalDate(LocalDate.now());
    SampleDto sampleDto = sampleMapper.mapTo(sampleEntity);
    return ResponseEntity.ok(sampleDto);
}