我有一个Spring Boot应用程序使用Spring-data-rest暴露REST API . 我的一些实体具有OneToMany映射：

@Entity
@Table(name = "records")
@Getter
@Setter
public class Record {

  @Id
  @GeneratedValue(strategy = GenerationType.AUTO)
  @Column(name = "unique_record_id")
  private long id;

  ...

  @ManyToOne
  @JoinTable(name = "cycles_records", joinColumns = @JoinColumn(name = "unique_record_id"), inverseJoinColumns = @JoinColumn(name = "unique_cycle_id"))
  private Cycle cycle;
}

@Entity
@Table(name = "cycles", uniqueConstraints = @UniqueConstraint(columnNames = { "user_id", "cycle_id" }))
@Getter
@Setter
public class Cycle {

  @Id
  @GeneratedValue(strategy = GenerationType.AUTO)
  @Column(name = "unique_cycle_id")
  private long id;

  ...

  @OneToMany(cascade = CascadeType.ALL)
  @JoinTable(name = "cycles_records", joinColumns = @JoinColumn(name = "unique_cycle_id"), inverseJoinColumns = @JoinColumn(name = "unique_record_id"))
  private List<Record> records;
}

两个实体都有相应的存储库 .

将新记录发布到属于循环的集合时，我只需将以下请求发送到 /records ：

{
  ...record parameters
  "cycle": "/cycles/1"
}

这将创建一个新实体并将其添加到相应的循环中 . 我现在正试图在我的itnegration测试中测试这种行为，我想知道是否有简单的方法如何使用对象，而不是在String中手动创建请求的主体：

@Test
public void test() {

    HttpHeaders headers = new HttpHeaders();
    headers.add(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_JSON_VALUE);

    // Record record = new Record();
    // set record parameter here
    // how to set the Cycle URI using objects???

    // this feels clumsy
    String record = "{\n ...parameters...,\n    \"cycle\":\"/cycles/1\"\n}";

    final ResponseEntity<Record> response = testRestTemplate.postForEntity("/records",
        new HttpEntity<>(record, headers), Record.class);

    assertThat(response.getStatusCode(), is(HttpStatus.CREATED));
}

有没有办法如何将Record实体准备为Object并将其传递给RestTemplate，以便它包含指向所需Cycle实体的链接，还是我必须在String中准备它？

我希望我的问题有道理，如果没有，请随时澄清 .

java spring-data-rest resttemplate