400错误请求：通过google api java客户端向google联系人添加联系人

我有一个HttpRequestException:在google api java客户端的帮助下尝试将联系人插入google联系人时，有400个错误请求，我花了几个小时来找出问题所在，也许有人可以帮助我？这是我的插入联系人方法：

private static ContactEntry insertContact(ContactEntry contact,String auth) throws IOException
{
    String url = "https://www.google.com/m8/feeds/contacts/default/full";
    AtomContent atomContent = AtomContent.forEntry(ClientUtils.createNamespaceDictionary(), contact);
    HttpRequest request = ClientUtils.createBareRequestFactory(auth).buildPostRequest(new GoogleUrl(url), atomContent);
    return request.execute().parseAs(ContactEntry.class);
}

这是我的联系人条目xml表示模型：

public class ContactEntry
{
@Key
private Category category = new Category();

@Key("gd:name")
public Name name;

@Key("link")
public List<Link> links;

@Key
public String title;

@Key
public Content content;

@Key("gd:phoneNumber")
public PhoneNumber phoneNumber;
}

这是我的Util类：

public class ClientUtils
{
public static XmlNamespaceDictionary createNamespaceDictionary()
{
    return new XmlNamespaceDictionary()
            .set("", "http://www.w3.org/2005/Atom")
            .set("gd", "http://schemas.google.com/g/2005")
            .set("xml", "http://www.w3.org/XML/1998/namespace");
}
public static HttpRequestFactory createBareRequestFactory(final String auth) throws IOException
        {
        final HttpTransport transport = AndroidHttp.newCompatibleTransport();
        return transport.createRequestFactory(new HttpRequestInitializer() {

          @Override
          public void initialize(HttpRequest request) {
            GoogleHeaders headers = new GoogleHeaders();
            headers.setApplicationName("Google-Contacts/1.0");
            headers.setGoogleLogin(auth);
            headers.gdataVersion = "3";
            request.setHeaders(headers);
            request.addParser(new AtomParser(ClientUtils.createNamespaceDictionary()));
          }
        });
      }

}

我也尝试过将gdataVersion更改为“2”，但这不起作用。 有什么建议吗？

---

谢谢。

似乎没有人尝试将android联系人添加到谷歌

public class ClientUtils
{
public static XmlNamespaceDictionary createNamespaceDictionary()
{
    return new XmlNamespaceDictionary()
            .set("", "http://www.w3.org/2005/Atom")
            .set("gd", "http://schemas.google.com/g/2005")
            .set("xml", "http://www.w3.org/XML/1998/namespace");
}
public static HttpRequestFactory createBareRequestFactory(final String auth) throws IOException
        {
        final HttpTransport transport = AndroidHttp.newCompatibleTransport();
        return transport.createRequestFactory(new HttpRequestInitializer() {

          @Override
          public void initialize(HttpRequest request) {
            GoogleHeaders headers = new GoogleHeaders();
            headers.setApplicationName("Google-Contacts/1.0");
            headers.setGoogleLogin(auth);
            headers.gdataVersion = "3";
            request.setHeaders(headers);
            request.addParser(new AtomParser(ClientUtils.createNamespaceDictionary()));
          }
        });
      }