我正在使用Spring HATEOAS和Spring堆棧的REST API,並且我有一些資源鏈接問題。Spring HATEOAS資源彙編程序和資源鏈接與許多變量
這裏是我的代碼:
控制器:
@RestController
@RequestMapping("/apporteurs/{idInt}/ribs")
public class RibController {
@Autowired
private RibResourceAssembler ribResourceAssembler;
@Autowired
private RibRepository ribRepository;
/**
* Methode GET permettant d'obtenir un Rib par son ID
*
* @param idRib ID du Rib
* @return RibResource
*/
@RequestMapping(value = "/{idRib}", method = RequestMethod.GET)
@ResponseBody
public RibResource getRibById(@PathVariable Long idInt, @PathVariable Long idRib) {
CurrentUserUtils.checkAuthorizationByApporteur(idInt);
return ribResourceAssembler.toResource(ribRepository.getRibById(idRib));
}
}
彙編:
@Component
public class RibResourceAssembler extends ResourceAssemblerSupport<Rib, RibResource> {
public static final long TMP_IDS = 1234L;
@Autowired
private RibResourceMapper ribResourceMapper;
public RibResourceAssembler() {
super(RibController.class, RibResource.class);
}
@Override
public RibResource toResource(Rib rib) {
return createResourceWithId(rib.getId(), rib);
}
/**
* TODO : mettre le lien vers l'editique Mandat
*
* @param rib Rib à instancier en Resource.
* @return RibResource
*/
@Override
protected RibResource instantiateResource(Rib rib) {
RibResource ribResource = ribResourceMapper.fromRib(rib, rib.getLastMandat());
ribResource.removeLinks();
CustomUserDetails user = CurrentUserUtils.getCurrentUser();
UriComponentsBuilder uriBuilderMandat = linkTo(RibController.class).toUriComponentsBuilder();
String uri = uriBuilderMandat.path("/{idRib}/mandats/{idMandat}").buildAndExpand(user.getIdInt(), rib.getId(), TMP_IDS).toUriString();
Link linkEditiqueMandat = new Link(uri).withRel("editiqueMandat");
UriComponentsBuilder uriBuilderRib = linkTo(RibController.class).toUriComponentsBuilder();
String uriSelf = uriBuilderRib.path("/{idRib}").buildAndExpand(user.getIdInt(), rib.getId()).toUriString();
Link linkUriSelf = new Link(uriSelf).withSelfRel();
ribResource.add(linkEditiqueMandat);
ribResource.add(linkUriSelf);
return ribResource;
}
}
資源:
public class RibResource extends ResourceSupport {
private Long idRib;
private String rum;
private String iban;
private String libelle;
private String dateFin;
private String dateCreation;
private String dateModification;
private String codeOperateurCreation;
private String dateRegulationMandat;
private boolean actif;
private boolean reactivable;
private CodeValueResource modeReglement;
/*Gzetter & setters, etc*/
}
正如你所看到的,我的控制器在URI中有一些參數:idInt和idRib。因此,爲了創建一個SelfLink,我必須知道這個參數用於製作類似「/ apporteurs/1234/ribs/1234」的東西,但是我認爲彙編程序只需要一個參數和一個「簡單」URI。
我有這樣的堆棧跟蹤:
2014-11-25 12:02:09.365 ERROR 20860 --- [nio-9080-exec-1] w.s.m.m.a.ResponseEntityExceptionHandler : Not enough variable values available to expand 'idInt'
所以我在尋找一個完美的解決方案要做到這一點,因爲我沒有發現任何東西^^
我看到ResourceProcessor東西,但我沒有使用Spring Data Rest。
你能幫我嗎?謝謝你在前進;)
編輯:
結果應該是:
_links": {
"editiqueMandat": {
"href": "http://localhost:9080/apporteurs/6797/mandats/5822"
},
"self": {
"href": "http://localhost:9080/apporteurs/6797/ribs/1234"
}
}
OK !!!非常感謝,我從事這樣的解決方案,但不知道從哪裏開始:我看到「createResourceWithId」在Spring代碼中創建自連接,但在此之後創建「removeLinks」並非「乾淨」我的意見^^非常感謝,標記已解決;) – Tetragramato 2014-11-25 14:00:38