实现Spring数据存储库的自定义方法并通过REST公开它们
实现Spring数据存储库的自定义方法并通过REST公开它们
提问于 2014-08-08 10:23:22
我正在尝试将自定义方法添加到我的Spring数据存储库PersonRepository中，如1.3 Custom implementations for Spring Data repositories所述，并通过REST公开这些方法。初始代码来自Accessing JPA Data with REST示例，下面是添加/修改类的代码：
interface PersonRepositoryCustom {
List<Person> findByFistName(String name);
}
class PersonRepositoryImpl implements PersonRepositoryCustom, InitializingBean {
@Override
public void afterPropertiesSet() throws Exception {
// initialization here
}
@Override
public List<Person> findByFistName(String name) {
// find the list of persons with the given firstname
}
}
@RepositoryRestResource(collectionResourceRel = "people", path = "people")
public interface PersonRepository extends PagingAndSortingRepository<Person, Long> {
List<Person> findByLastName(@Param("name") String name);
}当我运行应用程序并访问http://localhost:8080/portfolio/search/时，我得到以下响应体：
{
"_links" : {
"findByLastName" : {
"href" : "http://localhost:8080/people/search/findByLastName{?name}",
"templated" : true
}
}
}为什么即使findByFirstName在PersonRepository接口中可用，也不会公开它？
此外，是否有一种方法可以动态/以编程方式添加要通过REST公开的资源？
Stack Overflow用户
发布于 2016-04-06 15:12:49
两天后，我就这样解决了。
自定义存储库接口：
public interface PersonRepositoryCustom {
Page<Person> customFind(String param1, String param2, Pageable pageable);
}自定义库实现
public class PersonRepositoryImpl implements PersonRepositoryCustom{
@Override
public Page<Person> customFind(String param1, String param2, Pageable pageable) {
// custom query by mongo template, entity manager...
}
}春季数据仓库：
@RepositoryRestResource(collectionResourceRel = "person", path = "person")
public interface PersonRepository extends MongoRepository<Person, String>, PersonRepositoryCustom {
Page<Person> findByName(@Param("name") String name, Pageable pageable);
}Bean资源表示
public class PersonResource extends org.springframework.hateoas.Resource<Person>{
public PersonResource(Person content, Iterable<Link> links) {
super(content, links);
}
}资源汇编程序
@Component
public class PersonResourceAssembler extends ResourceAssemblerSupport<Person, PersonResource> {
@Autowired
RepositoryEntityLinks repositoryEntityLinks;
public PersonResourceAssembler() {
super(PersonCustomSearchController.class, PersonResource.class);
}
@Override
public PersonResource toResource(Person person) {
Link personLink = repositoryEntityLinks.linkToSingleResource(Person.class, person.getId());
Link selfLink = new Link(personLink.getHref(), Link.REL_SELF);
return new PersonResource(person, Arrays.asList(selfLink, personLink));
}
}自定义Spring控制器
@BasePathAwareController
@RequestMapping("person/search")
public class PersonCustomSearchController implements ResourceProcessor<RepositorySearchesResource> {
@Autowired
PersonRepository personRepository;
@Autowired
PersonResourceAssembler personResourceAssembler;
@Autowired
private PagedResourcesAssembler<Person> pagedResourcesAssembler;
@RequestMapping(value="customFind", method=RequestMethod.GET)
public ResponseEntity<PagedResources> customFind(@RequestParam String param1, @RequestParam String param2, @PageableDefault Pageable pageable) {
Page personPage = personRepository.customFind(param1, param2, pageable);
PagedResources adminPagedResources = pagedResourcesAssembler.toResource(personPage, personResourceAssembler);
if (personPage.getContent()==null || personPage.getContent().isEmpty()){
EmbeddedWrappers wrappers = new EmbeddedWrappers(false);
EmbeddedWrapper wrapper = wrappers.emptyCollectionOf(Person.class);
List<EmbeddedWrapper> embedded = Collections.singletonList(wrapper);
adminPagedResources = new PagedResources(embedded, adminPagedResources.getMetadata(), adminPagedResources.getLinks());
}
return new ResponseEntity<PagedResources>(adminPagedResources, HttpStatus.OK);
}
@Override
public RepositorySearchesResource process(RepositorySearchesResource repositorySearchesResource) {
final String search = repositorySearchesResource.getId().getHref();
final Link customLink = new Link(search + "/customFind{?param1,param2,page,size,sort}").withRel("customFind");
repositorySearchesResource.add(customLink);
return repositorySearchesResource;
}
}页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/25201306
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