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?
发布于 2014-08-09 09:28:45
这些方法没有公开的原因是,您基本上可以在自定义存储库方法中实现您想要的任何东西,因此不可能对支持特定资源的正确HTTP方法进行推理。
在您的示例中,使用普通的GET
可能很好,而在其他情况下,它可能必须是一个POST
,因为该方法的执行有副作用。
当前的解决方案是创建一个定制控制器来调用存储库方法。
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;
}
}
发布于 2016-11-14 09:59:02
对于GET
方法,我使用了以下方法:
@Query
方法(LogRepository.java)使用这种方法,我不需要管理预测和资源组装。
@RepositoryRestResource(collectionResourceRel = "log", path = "log")
public interface LogRepository extends PagingAndSortingRepository<Log, Long>,
LogRepositoryCustom {
//NOTE: This query is just a dummy query
@Query("select l from Log l where l.id=-1")
Page<Log> findAllFilter(@Param("options") String options,
@Param("eid") Long[] entityIds,
@Param("class") String cls,
Pageable pageable);
}
public interface LogRepositoryCustom {
Page<Log> findAllFilter(@Param("options") String options,
@Param("eid") Long[] entityIds,
@Param("class") String cls,
Pageable pageable);
}
在实现中,您可以自由地使用存储库方法或直接进入持久性层:
public class LogRepositoryImpl implements LogRepositoryCustom{
@Autowired
EntityManager entityManager;
@Autowired
LogRepository logRepository;
@Override
public Page<Log> findAllFilter(
@Param("options") String options,
@Param( "eid") Long[] entityIds,
@Param( "class" ) String cls,
Pageable pageable) {
//Transform kendoui json options to java object
DataSourceRequest dataSourceRequest=null;
try {
dataSourceRequest = new ObjectMapper().readValue(options, DataSourceRequest.class);
} catch (IOException ex) {
throw new RuntimeException(ex);
}
Session s = entityManager.unwrap(Session.class);
Junction junction = null;
if (entityIds != null || cls != null) {
junction = Restrictions.conjunction();
if (entityIds != null && entityIds.length > 0) {
junction.add(Restrictions.in("entityId", entityIds));
}
if (cls != null) {
junction.add(Restrictions.eq("cls", cls));
}
}
return dataSourceRequest.toDataSourceResult(s, Log.class, junction);
}
https://stackoverflow.com/questions/25201306
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