Google OAuth 2 for Contacts Service

Question

我正在尝试通过Google Client API 1.47.1的jar示例获取所有联系人

我刚刚创建了一个Auth类，以获得新的ContactsService。

public class Auth {


public static class ProfilesManager {

    private String domain;
    private String adminEmail;
    private int batchSize = 100;
    private List<ContactEntry> profiles;
    private ContactsService myService;


    public ProfilesManager(String consumerKey, String consumerSecret, String adminEmail)
        throws OAuthException {

      this.adminEmail = adminEmail;
      this.domain = adminEmail.substring(adminEmail.indexOf('@') + 1);

      GoogleOAuthParameters oauthParameters = new GoogleOAuthParameters();
      oauthParameters.setOAuthConsumerKey(consumerKey);
      oauthParameters.setOAuthConsumerSecret(consumerSecret);

      this.myService = new ContactsService("GoogleInc-UnshareProfiles-1");
      this.myService.setOAuthCredentials(oauthParameters, new OAuthHmacSha1Signer());
    }


    public int getBatchSize() {
      return this.batchSize;
    }      
    public void setBatchSize(int value) {
      this.batchSize = value;
    }
    public List<ContactEntry> getProfiles() {
      return this.profiles;
    }


    public void getAllProfiles() throws IOException, ServiceException {
      ArrayList<ContactEntry> profiles = new ArrayList<ContactEntry>();

      URL feedUrl =
          new URL("https://www.google.com/m8/feeds/profiles/domain/" + this.domain
              + "/full?xoauth_requestor_id=" + this.adminEmail);
      while (feedUrl != null) {
        ContactFeed resultFeed = this.myService.getFeed(feedUrl, ContactFeed.class);

        profiles.addAll(resultFeed.getEntries());

        if (resultFeed.getNextLink() != null && resultFeed.getNextLink().getHref() != null
            && resultFeed.getNextLink().getHref().length() > 0) {
          feedUrl = new URL(resultFeed.getNextLink().getHref());
        } else {
          feedUrl = null;
        }
      }
      this.profiles = profiles;
    }

}

}

但是在创建ContactsService的新实例时，此代码会生成异常：

Exception in thread "main" java.lang.NoClassDefFoundError: com/google/common/collect/Maps
at com.google.gdata.wireformats.AltRegistry.<init>(AltRegistry.java:118)
at com.google.gdata.wireformats.AltRegistry.<init>(AltRegistry.java:100)
at com.google.gdata.client.Service.<clinit>(Service.java:555)
at google.Auth$ProfilesManager.<init>(Auth.java:43)
at main.Main.main(Main.java:16)