使用spring data rest向集合添加资源

Question

我的情况：我有一个可以有很多工人的组织。我正试图按照SDR项目的主要贡献者的例子向一个组织添加一个新工人，我得到了各种错误（包括204个错误，但什么也没发生）。

以下是我的实体和Rest电话：

@Entity
public class Organization {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;


    @OneToMany
    @JoinTable(name = "OrganizationWorker", joinColumns = {@JoinColumn(name = "OrganizationID")},
            inverseJoinColumns = {@JoinColumn(name = "WorkerID")})
    private Set<Worker> workers = new LinkedHashSet<>();
}

public class Worker {

    @Id
    @GeneratedValue(strategy=GenerationType.IDENTITY)
    private Long id;

    @NotNull
    private String givenName;

    @NotNull
    private String familyName;

    @NotNull
    private LocalDate dob;

    @NotNull
    private String nationalId;

    private byte[] photo;
}

收到http://localhost:8080/hal

{
    "_links": {

        "workers": {
            "href": "http://localhost:8080/hal/workers{?page,size,sort}",
            "templated": true
        }
    }
}

邮递http://localhost:8080/hal/workers

{
 "givenName": "James",
    "familyName": "Bond",
    "dob": "1970-01-01",
    "nationalId": "XXX-60-XXXX",
    "photo": null,
}

答复：

Location: http://localhost:8080/hal/workers/8
Date: Mon, 02 May 2016 16:53:02 GMT
Server: Apache-Coyote/1.1
Transfer-Encoding: chunked
X-Application-Context: application
Content-Type: application/hal+json;charset=UTF-8


{
    "givenName": "James",
    "familyName": "Bond",
    "dob": "1970-01-01",
    "nationalId": "XXX-60-XXXX",
    "photo": null,
    "_links": {
        "self": {
            "href": "http://localhost:8080/hal/workers/8"
        },
        "worker": {
            "href": "http://localhost:8080/hal/workers/8"
        }
    }
}

最后一步，按照说明中的链接：

curl -X PUT -H "ContentType: text/uri-list" http://localhost:8080/hal/organizations/2 -d 'http://localhost:8080/hal/workers/8'

{
    "cause": null,
    "message": "Target bean is not of type of the persistent entity!"
}

进行一些调试，很明显具体的投诉是什么。堆栈跟踪的线索如下：

@Override
public PersistentPropertyAccessor getPropertyAccessor(Object bean) {

    Assert.notNull(bean, "Target bean must not be null!");
    Assert.isTrue(getType().isInstance(bean), "Target bean is not of type of the persistent entity!");

    return new BeanWrapper<Object>(bean);
}

getType（）-

isInstance（bean）-

有什么意见吗？我严格按照指示去做。

Answer 1

答案是这样的（我出去散步后才清醒过来，然后撞上了这个）。

你得发到协会资源

http://localhost:8080/hal/organizations/1/workers

我突然想到了这一点，然后我去重新阅读了这篇帖子。

对于像我这样愚蠢的错误，400个错误会有用得多。