java - Spring Data REST - POST 方法未调用 RepositoryEventHandler 方法？

Question

我定义了以下域对象和 DTO。

Country.java

@Data
@Entity
public class Country extends ResourceSupport {

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private long countryID;

    @NotBlank(message = "Country name is a required field")
    private String countryName;

    private String countryNationality;
}

CountryDTO.java

@Data

public class CountryDTO {

    private List<Country> countries;
}

我已经重写了国家/地区类的 RepositoryRestController 中的 POST 方法。

@RepositoryRestController
public class CountryController {

    @Autowired
    private CountryRepository repo;

    @RequestMapping(method = POST, value = "countries")
    public @ResponseBody ResponseEntity<?> createCountry(@RequestBody Resource<CountryDTO> dto,
            Pageable page, PersistentEntityResourceAssembler resourceAssembler) {

        Country savedCountry = repo.save(dto.getContent().getCountries());
        return new ResponseEntity<>(resourceAssembler.toResource(savedCountry), HttpStatus.OK);
    }


}

现在我已经定义了一个 RepositoryEventHandler 来处理验证。

@Component
@RepositoryEventHandler
public class CountryHandler {


    @HandleBeforeCreate
    public void handleBeforeCreate(Country country) {

        System.out.println("testing");

}

但是当我向端点 http://localhost:8080/countries 发送 POST 请求时，事件处理程序不会被调用。我是不是做错了什么？

更新1:我使用 Postman 将以下 JSON 发送到端点。

"countries":[{
    "countryName":"Australia",
    "countryNationality":"Australian"

}]

Answer 1

如果不知道您如何调用请求，则很难为您提供准确的解决方案。但可能的原因是您缺少斜杠符号 @RequestMapping value 属性:

@RequestMapping(method = POST, value = "countries")

应该是:

@RequestMapping(method = POST, value = "/countries")