找不到合适的HttpMessageConverter请求类型[CustomClass]

Question

有很多这样的问题，但没有任何帮助。 我试图从这样的rest api得到回应：

private void createActorInstance(AbstractActorDTO actor)
    {
        HttpHeaders headers = new HttpHeaders();
        headers.add(AUTHORIZATION_HEADER_NAME, BASIC_AUTHORIZATION_HEADER_PREFIX + cmsRestApiCreds);
        HttpEntity<AbstractActorDTO> postRequest = new HttpEntity<>(actor, headers);
        ResponseEntity<String> postResponse = restTemplate.exchange(cmsRestApiUrl+"/actors", HttpMethod.POST,
                postRequest, String.class);
    }

我正在调用这个函数：

PersonActorDTO actor = new PersonActorDTO();
createActorInstance(actor);

提到AbstractActorDTO类是PersonActorDTO的超类。

摘要DTO：

public abstract class AbstractActorDTO extends AbstractDTO {
    @DTOProperty(
        entityProperty = "actorInstance.actor.actorCategory"
    )
    private String actorCategoryID;
    @DTOProperty(
        entityProperty = "actorInstance.scope"
    )
    private String scopeID;

    public AbstractActorDTO() {
    }

    public String getActorCategoryID() {
        return this.actorCategoryID;
    }

    public void setActorCategoryID(String actorCategoryID) {
        this.actorCategoryID = actorCategoryID;
    }

    public String getScopeID() {
        return this.scopeID;
    }

    public void setScopeID(String scopeID) {
        this.scopeID = scopeID;
    }
}

PersonActorDTO：

public class PersonActorDTO extends AbstractActorCreateDTO {
    @DTOProperty(
        entityProperty = "actorInstance.aliases"
    )
    private List<PersonAliasDTO> aliases = new ArrayList();
    @DTOProperty
    private String firstName;
    @DTOProperty
    private String middleName;
    @DTOProperty
    private String lastName;
    @DTOProperty
    private String prefix;
    @DTOProperty
    private String suffix;

    public PersonActorDTO() {
    }

    public List<PersonAliasDTO> getAliases() {
        return this.aliases;
    }

    public void setAliases(List<PersonAliasDTO> aliases) {
        this.aliases = aliases;
    }

    public String getFirstName() {
        return this.firstName;
    }

    public void setFirstName(String firstName) {
        this.firstName = firstName;
    }

    public String getMiddleName() {
        return this.middleName;
    }

    public void setMiddleName(String middleName) {
        this.middleName = middleName;
    }

    public String getLastName() {
        return this.lastName;
    }

    public void setLastName(String lastName) {
        this.lastName = lastName;
    }

    public String getPrefix() {
        return this.prefix;
    }

    public void setPrefix(String prefix) {
        this.prefix = prefix;
    }

    public String getSuffix() {
        return this.suffix;
    }

    public void setSuffix(String suffix) {
        this.suffix = suffix;
    }
}

谢谢。