使用Spring数据核心中的PagedResourcesAssembler生成HATEOAS链接

Question

public HttpEntity<PagedResources<Party>> search(@RequestBody PartySearchRequest request,
                                                    Pageable pageable, PagedResourcesAssembler<Party> assembler ) {

        Map<String,String> searchFilters = RequestValidator.validateContractSearchFilters(request);

        Page<Party> parties = repository.findByFirstNameOrLastName(searchFilters.get("firstName"), searchFilters.get("lastName"), pageable);

        return new ResponseEntity(assembler.toResource(parties), HttpStatus.OK);

    }

{
  "_embedded": {
    "partyList": [
      {
        "firstNm": "John",
        "lastNm": "Doe",
      },
      {
        "firstNm": "Bob",
        "lastNm": "Smith",
       }
        ],
      }
    ]
  },
  "_links": {
    "first": {
      "href": "http://localhost:8080/v1/party/search?page=0&size=2"
    },
    "self": {
      "href": "http://localhost:8080/v1/party/search?page=0&size=2"
    },
    "next": {
      "href": "http://localhost:8080/v1/party/search?page=1&size=2"
    },
    "last": {
      "href": "http://localhost:8080/v1/party/search?page=7&size=2"
    }
  },
  "page": {
    "size": 2,
    "totalElements": 16,
    "totalPages": 8,
    "number": 0
  }
}

如您所见，我获得了整个party搜索的链接，但没有获得单个party对象的链接。（我想我的问题类似于这个问题：如何在子资源中添加HATEOAS链接），但我不太确定，所以我发布了我自己的。

任何帮助都将不胜感激！谢谢！

Answer 1

您需要对扩展ResourceAssemblerSupport的类的引用。

将myResourceAssembler更改为您的类，这应该是可行的：

在控制器中：

private final MyResourceAssembler myResourceAssembler;

public MyController(MyResourceAssembler myResourceAssembler) {
   this.myResourceAssembler = myResourceAssembler;
}

public HttpEntity<PagedResources<Party>> search(@RequestBody PartySearchRequest request,
                                                Pageable pageable, PagedResourcesAssembler<Party> assembler ) {

    Map<String,String> searchFilters = RequestValidator.validateContractSearchFilters(request);

    Page<Party> parties = repository.findByFirstNameOrLastName(searchFilters.get("firstName"), searchFilters.get("lastName"), pageable);

    Link selfLink = linkTo(methodOn(this.getClass().view(pageable, null)).withSelfRel();

    return new ResponseEntity(assembler.toResource(parties, myResourceAssembler, selfLink), HttpStatus.OK);

}

return new ResponseEntity(assembler.toResource(parties, myResourceAssembler), HttpStatus.OK);

null