Spring數據頁面對象沒有引用對象的JSON響應信息

Question

我有一個與OwnerGroup實體具有FK關係的組織實體。

@Entity 
@Access(AccessType.FIELD) 
@Table(uniqueConstraints = @UniqueConstraint(columnNames={"appName","appId"})) 
public class Org { 

    @Id 
    @Column(name = "Id") 
    @GeneratedValue(strategy = GenerationType.IDENTITY) 

    private int Id; 

    /*@GenericGenerator(name = "sequence_org_id", strategy = "com.ciphercloud.ae.generators.OrgIdGenerator") 
    @GeneratedValue(generator = "sequence_org_id") 
    @Column(name="Org_Id") 
    private String orgId;*/ 

    @NotEmpty (message = "org username is mandatory") 
    private String username; 

    @NotEmpty (message = "org password is mandatory") 
    private String password; 

    private String securityToken; 

    @GenericGenerator(name = "sequence_app_id", strategy = "com.ciphercloud.ae.generators.AppIdGenerator") 
    private String appName; 

    private String appId; 

    @NotBlank (message = "Org Category should not be null or empty") 
    private String orgCategory; 

    private String orgSubCategory; 

    @NotBlank (message = "org regionId should not be null or empty") 
    private String regionId; 

    @Transient 
    private int parent_org_id; 


    @NotFound(action = NotFoundAction.IGNORE) 
    @ManyToOne 
    @JsonIgnore 
    @JoinColumn(name = "parent_org_id") 
    private Org org; 

    @NotBlank (message = "Org Type should not be null or empty") 
    private String orgType; 

    @Transient 
    private int ownergroup_id; 

@ManyToOne (cascade = CascadeType.ALL) 
    @JoinColumn(name = "ownergroup_id") 
    private OwnerGroup ownerGroup; 

我的倉庫類看起來像

public interface OrgRepostiory extends JpaRepository<Org, Serializable> { 
    public List<Org> findByOrgType(@Param("orgtype") String orgType); 
    public Page<Org> findByOrgTypeIn(@Param("orgtype") List<String> orgType, Pageable pageable); 
} 

我有一個控制器類，將它們公開爲REST和代碼是

@RequestMapping(value = "/search", method = RequestMethod.GET) 
    public ResponseEntity<List<Org>> testmap(@RequestParam MultiValueMap<String, String> params) { 

     System.out.println("params........" + params); 

     List<Org> orgs = orgServiceImpl.search(params); 
     if (orgs == null || orgs.size()==0) { 
      throw new ResourceNotFoundException("Invalid search criteria "); 
     } else { 
      return new ResponseEntity<List<Org>>(orgs, HttpStatus.OK); 
     } 
    } 


@RequestMapping(value = "/filter/{pageNumber}", method = RequestMethod.GET) 
    public ResponseEntity<PagedResources<org.springframework.hateoas.Resource<Org>>> filter(@PathVariable Integer pageNumber, @RequestParam HashMap<String, List<String>> params) { 

     System.out.println("params........" + params); 

     if(pageNumber <= 0){ 
      pageNumber = 1; 
     } 

     Page<Org> orgs = orgServiceImpl.filter(pageNumber, params); 
     if (orgs == null || orgs.getSize()==0) { 
      throw new ResourceNotFoundException("Invalid filter criteria "); 
     } else { 
      return new ResponseEntity<>(pagedResourceAssembler.toResource(orgs), HttpStatus.OK); 
     } 
    } 

現在，當我測試的REST客戶端請求爲

request = > http://localhost:8080/orgs/filter/1?orgtype=Production 

它獲得以下輸出。

// response 
{ 
username: "testdemo8" 
password: "testpwd1" 
securityToken: "testkey1" 
appName: null 
appId: null 
orgCategory: "Admin" 
orgSubCategory: null 
regionId: "na15" 
parent_org_id: 0 
available: true 
inductionStatus: null 
orgType: "Production" 
ownergroup_id: 0 
id: 32 
active: false 
}- 
- 
}- 
_links: { 
self: { 
href: "http://localhost:8080/orgs/filter/1?orgtype=Production" 
}- 
} 

無分頁

request => http://localhost:8080/orgs/search?orgtype=Production 

// response 
{ 
username: "testdemo8" 
password: "testpwd1" 
securityToken: "testkey1" 
appName: null 
appId: null 
orgCategory: "Admin" 
orgSubCategory: null 
regionId: "na15" 
parent_org_id: 0 
available: true 
inductionStatus: null 
orgType: "Production" 
ownergroup_id: 0 
**ownerGroup: { 
name: "sfdc-ft" 
description: "4.5 release" 
id: 1 
}-** 
id: 32 
active: false 
} 

如果我們觀察到，當不使用頁面對象，其返回子表中的數據。

但是當我使用分頁時，它不會返回子表數據。

當我們使用分頁時，是否需要添加任何東西來獲取子表信息？

Answer 1

我調試了這個問題，發現Join數據正在被控制器類中使用的pagedResourceAssembler類修剪。我換成

回報新ResponseEntity>（的單位，HttpStatus.OK）

現在，它變得參考對象數據以及預期的。