无法从Google Analytics获取数据（401 Unauthorized）

我尝试实现基本的数据馈送示例，我得到的只是：

com.google.api.client.googleapis.json.GoogleJsonResponseException：401未经授权 .

但是当我使用http://code.google.com/apis/analytics/docs/gdata/gdataExplorer.html时
它适用于我的Google Analytics帐户 .

根据OAuth2说明，我似乎已经完成了所有工作：创建了客户端ID和客户端密钥，启用了Analytcs API .

此外，我尝试使用Analytics Management API获取我的 Profiles 和帐户，但我得到了同样的错误 . 我做错了什么？

这是我的代码（当然我用实际的CLIENT_ID，CLIENT_SECRET和TABLE_ID运行此代码）：

public class AnalyticsTest {

    private static final String CLIENT_ID = "MY_CLIENT_ID";
    private static final String CLIENT_SECRET = "MY_CLIENT_SECRET";
    private static final String REDIRECT_URL = "urn:ietf:wg:oauth:2.0:oob";
    private static final String APPLICATION_NAME = "test";
    private static final String SCOPE = "https://www.googleapis.com/auth/analytics";
// TRIED AS WELL private static final String SCOPE = "https://www.google.com/analytics/feeds";
    private static final String TABLE_ID = "MY_TABLE_ID";

    public static void main(String[] args) throws IOException {
            NetHttpTransport netHttpTransport = new NetHttpTransport();
            JacksonFactory jacksonFactory = new JacksonFactory();
            // Generate the URL to send the user to grant access.
            String authorizationUrl = new GoogleAuthorizationRequestUrl(CLIENT_ID, REDIRECT_URL, SCOPE).build();

            // Direct user to the authorization URI.
            System.out.println("Go to the following link in your browser:");
            System.out.println(authorizationUrl);

            // Get authorization code from user.
            BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
            System.out.println("What is the authorization code?");
            String authorizationCode = null;
            authorizationCode = in.readLine();

            // Use the authorization code to get an access token and a refresh
            // token.
            AccessTokenResponse response = null;
            try {
                    response = new GoogleAccessTokenRequest.GoogleAuthorizationCodeGrant(netHttpTransport, jacksonFactory, CLIENT_ID, CLIENT_SECRET, authorizationCode, REDIRECT_URL).execute();
            } catch (IOException ioe) {
                    ioe.printStackTrace();
            }

            // Use the access and refresh tokens to get a new
            // GoogleAccessProtectedResource.
            GoogleAccessProtectedResource googleAccessProtectedResource = new GoogleAccessProtectedResource(response.accessToken, netHttpTransport, jacksonFactory, CLIENT_ID, CLIENT_SECRET, response.refreshToken);

            Analytics analytics = Analytics
                            .builder(netHttpTransport, jacksonFactory)
                            .setHttpRequestInitializer(googleAccessProtectedResource)
                            .setApplicationName(APPLICATION_NAME).build();
            //System.out.println(analytics.management().accounts().list().execute());

            Get apiQuery = analytics.data().ga().get(TABLE_ID, // "ga:" + Profile
                            // Id.
                            "2011-09-01", // Start date.
                            "2011-12-23", // End date.
                            "ga:visits"); // Metrics.

            try {
                    GaData gaData = apiQuery.execute();
                    // Success. Do something cool!

            } catch (GoogleJsonResponseException e) {
                    // Catch API specific errors.
                    e.printStackTrace();

            } catch (IOException e) {
                    // Catch general parsing errors.
                    e.printStackTrace();
            }

    }

这是堆栈跟踪：

com.google.api.client.googleapis.json.GoogleJsonResponseException：401 Unauthorized {“code”：401，“errors”：[{“domain”：“global”，“location”：“Authorization”，“locationType”： com.google.api.client.googleapis.json.GoogleJsonResponseException.from上的“ Headers ”，“消息”：“无效凭据”，“原因”：“authError”}]，“消息”：“无效凭据”}（GoogleJsonResponseException） .java：138）com.google.api.client.google上的com.google.api.client.googleapis.services.GoogleClient.execute(GoogleClient.java:123）.jsonHttpRequest.executeUnparsed（JsonHttpRequest.java:67） ）at com.google.api.services.analytics.Analytics $ Data $ Ga $ Get.execute（Analytics.java:1335）at voc.AnalyticsTest.main（AnalyticsTest.java:76）