在使用Google Contacts API Java时，没有获得认证头信息错误

Question

我收到AuthSub令牌并使用它从google检索所有联系人。代码片段

try {
    URL feedUrl = new URL("https://www.google.com/m8/feeds/contacts/default/base?max-results=" + maxresult);
    ContactsService service = new ContactsService("Google-contactsExampleApp-1");
    service.setAuthSubToken(sessionToken, getPrivateKey());
    ContactFeed resultFeed = service.getFeed(feedUrl, ContactFeed.class);
    ArrayList<UserContact> ucList = new ArrayList<UserContact>(resultFeed.getEntries().size());
    for (ContactEntry entry : resultFeed.getEntries()) {
        if (entry == null || entry.hasDeleted()) {
            continue;
        }
        ucList.add(parseEntry(entry));
    }
    return ucList;
} catch (Exception e) {
    LOGGER.log(Level.WARNING, null, e);
    return null;
}

java.lang.NullPointerException: No authentication header information
at com.google.gdata.util.AuthenticationException.initFromAuthHeader(AuthenticationException.java:96)
at com.google.gdata.util.AuthenticationException.<init>(AuthenticationException.java:67)
at com.google.gdata.client.http.HttpGDataRequest.handleErrorResponse(HttpGDataRequest.java:600)
at com.google.gdata.client.http.GoogleGDataRequest.handleErrorResponse(GoogleGDataRequest.java:563)
at com.google.gdata.client.http.HttpGDataRequest.checkResponse(HttpGDataRequest.java:552)
at com.google.gdata.client.http.HttpGDataRequest.execute(HttpGDataRequest.java:530)
at com.google.gdata.client.http.GoogleGDataRequest.execute(GoogleGDataRequest.java:535)
at com.google.gdata.client.Service.getFeed(Service.java:1135)
at com.google.gdata.client.Service.getFeed(Service.java:998)
at com.google.gdata.client.GoogleService.getFeed(GoogleService.java:631)
at com.google.gdata.client.Service.getFeed(Service.java:1017)

Answer 1

我认为您需要调用setOAuthCredentials才能获得访问权限。下面是相同的示例:

GoogleOAuthParameters oauthParameters = new GoogleOAuthParameters();
oauthParameters.setOAuthConsumerKey(consumerKey);
oauthParameters.setOAuthToken(accessToken);
contactsService.setOAuthCredentials(oauthParameters, signer);

Answer 2

尝试此提要url，始终添加已验证的电子邮件id，而不是默认和访问令牌。

feedUrl = new URL("https://www.google.com/m8/feeds/contacts/"+userEmail+"/full?access_token="+access);