相关疑难解决方法(0)

示例:课程和教师有多对一的关系,如何通过Spring-data rest改变某个课程的教师？

GET http://localhost:7070/study-spring-data/course/2

响应:

{
  "name" : "CSCI-338 Hardcore Java",
  "_links" : [ {
    "rel" : "course.Course.teacher",
    "href" : "http://localhost:7070/study-spring-data/course/2/teacher"
  }, {
    "rel" : "self",
    "href" : "http://localhost:7070/study-spring-data/course/2"
  } ]
}

GET http://localhost:7070/study-spring-data/course/2/teacher

响应:

{
  "_links" : [ {
    "rel" : "course.Course.teacher",
    "href" : "http://localhost:7070/study-spring-data/course/2/teacher/1"
  } ]
}

如上所示,课程2与教师1相关,如何将教师改为教师2？

我试过了:

成功更新课程名称:

PUT http://localhost:7070/study-spring-data/course/2 有效载荷

    {
      "name" : "CSCI-223 Hardcore C++",
    }

尝试更新参考对象教师时失败:

PUT http://localhost:7070/study-spring-data/course/2/teacher

有效载荷

    {
      "_links" : [ {
        "rel" : "course.Course.teacher",
        "href" : "http://localhost:7070/study-spring-data/course/2/teacher/2" …

在我的项目中,我有两个域模型.父母和子实体.父级引用子权利列表.(例如,帖子和评论)两个实体都有它们的弹簧数据JPA CrudRepository<Long, ModelClass>接口,它们被公开为@RepositoryRestResource

HTTP GET和PUT操作正常工作,并返回这些模型的漂亮HATEOS表示.

现在我需要一个特殊的REST端点"创建一个引用一个或多个现有子实体的新Parent ".我想将对子项的引用作为text/uri-list发布,我在请求正文中传递,如下所示:

POST http://localhost:8080/api/v1/createNewParent
HEADER
  Content-Type: text/uri-list
HTTP REQUEST BODY:
   http://localhost:8080/api/v1/Child/4711
   http://localhost:8080/api/v1/Child/4712
   http://localhost:8080/api/v1/Child/4713

如何实现此休止端点？这是我到目前为止所尝试的:

 @Autowired
 ParentRepo parentRepo  // Spring Data JPA repository for "parent" entity


 @RequestMapping(value = "/createNewParent", method = RequestMethod.POST)
 public @ResponseBody String createNewParentWithChildren(
    @RequestBody Resources<ChildModel> childList,                         
    PersistentEntityResourceAssembler resourceAssembler
) 
{
   Collection<ChildModel> childrenObjects = childList.getContent()

   // Ok, this gives me the URIs I've posted
   List<Link> links = proposalResource.getLinks();

   // But now how to convert these URIs to domain objects???
   List<ChildModel> …